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Cagnin A, Pigato G, Pettenuzzo I, Zorzi G, Roiter B, Anglani MG, Bussè C, Mozzetta S, Gabelli C, Campi C, Cecchin D. Data-driven analysis of regional brain metabolism in behavioral frontotemporal dementia and late-onset primary psychiatric diseases with frontal lobe syndrome: A PET/MRI study. Neurobiol Aging 2024; 137:47-54. [PMID: 38422798 DOI: 10.1016/j.neurobiolaging.2024.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 01/10/2024] [Accepted: 01/30/2024] [Indexed: 03/02/2024]
Abstract
Late-onset primary psychiatric disease (PPD) and behavioral frontotemporal dementia (bvFTD) present with a similar frontal lobe syndrome. We compare brain glucose metabolism in bvFTD and late-onset PPD and investigate the metabolic correlates of cognitive and behavioral disturbances through FDG-PET/MRI. We studied 37 bvFTD and 20 late-onset PPD with a mean clinical follow-up of three years. At baseline evaluation, metabolism of the dorsolateral, ventrolateral, orbitofrontal regions and caudate could classify the patients with a diagnostic accuracy of 91% (95% CI: 0.81-0.98%). 45% of PPD showed low-grade hypometabolism in the anterior cingulate and/or parietal regions. Frontal lobe metabolism was normal in 32% of genetic bvFTD and bvFTD with motor neuron signs. Hypometabolism of the frontal and caudate regions could help in distinguishing bvFTD from PPD, except in cases with motor neuron signs and/or genetic bvFTD for which brain metabolism may be less informative.
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Affiliation(s)
- Annachiara Cagnin
- Neurology Unit, Department of Neuroscience (DNS) University of Padua, Padua, Italy; Padua Neuroscience Center, University of Padua, Padua, Italy.
| | - Giorgio Pigato
- Psychiatry Unit, Department of Neuroscience (DNS), University of Padua, Padua, Italy
| | - Ilaria Pettenuzzo
- Neurology Unit, Department of Neuroscience (DNS) University of Padua, Padua, Italy
| | - Giovanni Zorzi
- Neurology Unit, Department of Neuroscience (DNS) University of Padua, Padua, Italy; Padua Neuroscience Center, University of Padua, Padua, Italy; CRIC, Azienda Ospedale-Università of Padua, Italy
| | - Beatrice Roiter
- Psychiatry Unit, Department of Neuroscience (DNS), University of Padua, Padua, Italy
| | | | - Cinzia Bussè
- Neurology Unit, Department of Neuroscience (DNS) University of Padua, Padua, Italy
| | - Stefano Mozzetta
- Neurology Unit, Department of Neuroscience (DNS) University of Padua, Padua, Italy
| | | | - Cristina Campi
- Nuclear Medicine Unit, Department of Medicine (DIMED), University of Padua, Padua, Italy; Department of Mathematics, University of Genoa and IRCCS Policlinico San Martino Hospital, Genoa
| | - Diego Cecchin
- Padua Neuroscience Center, University of Padua, Padua, Italy; Nuclear Medicine Unit, Department of Medicine (DIMED), University of Padua, Padua, Italy
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2
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van Engelen MPE, Louwers P, Fieldhouse JLP, Gossink FT, de Boer SCM, Dols A, Scheltens P, Schouws SNTM, Pijnenburg YAL, Vijverberg EGB, Krudop WA. Social cognition differentiates phenocopy syndrome of behavioural variant frontotemporal dementia from behavioural variant frontotemporal dementia. Psychogeriatrics 2024. [PMID: 38566489 DOI: 10.1111/psyg.13107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/22/2024] [Accepted: 02/25/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Patients displaying clinical features of behavioural variant of frontotemporal dementia (bvFTD) but lacking both neuroimaging abnormalities and clinical progression are considered to represent the phenocopy syndrome of bvFTD (phFTD). Extensive clinical overlap between early phase bvFTD and phFTD hampers diagnostic distinction. We aimed to assess the diagnostic value of clinician-rated, self-reported and caregiver-reported symptoms for clinical distinction between phFTD and bvFTD. METHODS There were 33 phFTD and 95 probable bvFTD patients included in the study (total N = 128). Clinician-rated, self-reported tests and caregiver-reported symptoms were compared between phFTD and bvFTD on social cognition, behaviour, mood and activities of daily living (ADL). Scores were compared between groups, followed by multiple logistic regression analysis, adjusted for age and sex. Receiver operating characteristic curves were plotted to assess diagnostic value. RESULTS Using clinician-rated and self-reported tests, phFTD patients performed better on facial emotion recognition and reported more depressive symptoms. Caregiver-reported behavioural symptoms indicated higher behavioural and ADL impairment in phFTD compared to bvFTD. Facial emotion recognition provided highest diagnostic accuracy for distinction of phFTD from bvFTD (area under the curve (AUC) 0.813 95% CI 0.735-0.892, P < 0.001, sensitivity 81%, specificity 74%) followed by depressive symptoms (AUC 0.769 95% 0.674-0.864, P < 0.001 sensitivity 81%, specificity of 63%). CONCLUSION Social cognition tests are most suitable for distinction of phFTD from bvFTD. Caregiver-reported questionnaires and phFTD diagnosis seemed inversely correlated, showing more symptoms in phFTD. Further research is needed on phFTD aetiology and in caregivers taking into account disease burden to assess what explains this discrepancy between clinician-rated and caregiver-based tools.
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Affiliation(s)
- Marie-Paule E van Engelen
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Neurodegeneration, Amsterdam, The Netherlands
| | - Paulette Louwers
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Neurodegeneration, Amsterdam, The Netherlands
| | - Jay L P Fieldhouse
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Neurodegeneration, Amsterdam, The Netherlands
| | - Flora T Gossink
- Reinier van Arkel, Jeroen Bosch Hospital, Hospital and Geriatric Psychiatric Centre, Den Bosch, The Netherlands
| | - Sterre C M de Boer
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Neurodegeneration, Amsterdam, The Netherlands
- The University of Sydney, School of Psychology, Sydney, New South Wales, Australia
| | - Annemieke Dols
- Department of Psychiatry, University Medical Centre Utrecht, Utrecht, The Netherlands
- Department of Psychiatry, Amsterdam Neuroscience, Mood Anxiety Psychosis Sleep & Stress Program, Amsterdam UMC, Amsterdam, The Netherlands
| | - Philip Scheltens
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Neurodegeneration, Amsterdam, The Netherlands
- EQT Life Sciences Partners, Amsterdam, The Netherlands
| | - Sigfried N T M Schouws
- Department of Old Age Psychiatry and Neuropsychiatry, GGZ inGeest Specialised Mental Health Care, Location De Nieuwe Valerius, Amsterdam, The Netherlands
- Amsterdam UMC Location Vrije Universiteit Amsterdam, Psychiatry, Amsterdam, The Netherlands
- Amsterdam Public Health Research Institute, Mental Health, Amsterdam, The Netherlands
| | - Yolande A L Pijnenburg
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Neurodegeneration, Amsterdam, The Netherlands
| | - Everard G B Vijverberg
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Amsterdam Neuroscience, Neurodegeneration, Amsterdam, The Netherlands
| | - Welmoed A Krudop
- Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit Amsterdam, Amsterdam UMC location VUmc, Amsterdam, The Netherlands
- Department of Old Age Psychiatry and Neuropsychiatry, GGZ inGeest Specialised Mental Health Care, Location De Nieuwe Valerius, Amsterdam, The Netherlands
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3
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Peters RM, Schieszler-Ockrassa CM, Gleason A, Patterson K. Phenocopy behavioral variant frontotemporal dementia: A case study. Clin Neuropsychol 2024:1-16. [PMID: 38360583 DOI: 10.1080/13854046.2024.2315726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 11/30/2023] [Indexed: 02/17/2024]
Abstract
Objective: Behavioral variant frontotemporal dementia (bvFTD) is a neurodegenerative condition characterized by progressive changes in behavior, cognition, and day-to-day functioning. Progression of the disease usually leads to death 3-5 years after diagnosis. However, there are reports of individuals who are initially diagnosed with bvFTD but fail to progress. These individuals are thought to have what is becoming known as phenocopy bvFTD (phFTD). Methods: This manuscript reviews a single case study of a 68-year-old male Veteran who was diagnosed with bvFTD in 2010, which has not progressed over time. Results: Review of serial neuropsychological evaluations was broadly normal with mild evidence of executive dysfunction with minimal reliable change in his performances from 2015, 2017, and 2022 evaluations. He also has not developed neuroimaging evidence of FTD. Conclusions: This case illustrates the importance of monitoring individuals over time and incorporating neuroimaging data into the diagnosis. We believe this Veteran's presentation is most consistent with what has been described as phFTD.
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Affiliation(s)
| | | | - Angela Gleason
- Clement J. Zablocki VA Medical Center, Milwaukee, WI, USA
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Elmansy MF, Reidl CT, Rahaman M, Özdinler PH, Silverman RB. Small molecules targeting different cellular pathologies for the treatment of amyotrophic lateral sclerosis. Med Res Rev 2023; 43:2260-2302. [PMID: 37243319 PMCID: PMC10592673 DOI: 10.1002/med.21974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 02/28/2023] [Accepted: 04/30/2023] [Indexed: 05/28/2023]
Abstract
Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disease in which the motor neuron circuitry displays progressive degeneration, affecting mostly the motor neurons in the brain and in the spinal cord. There are no effective cures, albeit three drugs, riluzole, edaravone, and AMX0035 (a combination of sodium phenylbutyrate and taurursodiol), have been approved by the Food and Drug Administration, with limited improvement in patients. There is an urgent need to build better and more effective treatment strategies for ALS. Since the disease is very heterogenous, numerous approaches have been explored, such as targeting genetic mutations, decreasing oxidative stress and excitotoxicity, enhancing mitochondrial function and protein degradation mechanisms, and inhibiting neuroinflammation. In addition, various chemical libraries or previously identified drugs have been screened for potential repurposing in the treatment of ALS. Here, we review previous drug discovery efforts targeting a variety of cellular pathologies that occur from genetic mutations that cause ALS, such as mutations in SOD1, C9orf72, FUS, and TARDP-43 genes. These mutations result in protein aggregation, which causes neuronal degeneration. Compounds used to target cellular pathologies that stem from these mutations are discussed and comparisons among different preclinical models are presented. Because the drug discovery landscape for ALS and other motor neuron diseases is changing rapidly, we also offer recommendations for a novel, more effective, direction in ALS drug discovery that could accelerate translation of effective compounds from animals to patients.
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Affiliation(s)
- Mohamed F. Elmansy
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, Evanston, Illinois, USA
- Department of Organometallic and Organometalloid Chemistry, National Research Centre, Cairo, Egypt
| | - Cory T. Reidl
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, Evanston, Illinois, USA
| | - Mizzanoor Rahaman
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, Evanston, Illinois, USA
| | - P. Hande Özdinler
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Richard B. Silverman
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, Evanston, Illinois, USA
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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5
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Antonioni A, Raho EM, Lopriore P, Pace AP, Latino RR, Assogna M, Mancuso M, Gragnaniello D, Granieri E, Pugliatti M, Di Lorenzo F, Koch G. Frontotemporal Dementia, Where Do We Stand? A Narrative Review. Int J Mol Sci 2023; 24:11732. [PMID: 37511491 PMCID: PMC10380352 DOI: 10.3390/ijms241411732] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Frontotemporal dementia (FTD) is a neurodegenerative disease of growing interest, since it accounts for up to 10% of middle-age-onset dementias and entails a social, economic, and emotional burden for the patients and caregivers. It is characterised by a (at least initially) selective degeneration of the frontal and/or temporal lobe, generally leading to behavioural alterations, speech disorders, and psychiatric symptoms. Despite the recent advances, given its extreme heterogeneity, an overview that can bring together all the data currently available is still lacking. Here, we aim to provide a state of the art on the pathogenesis of this disease, starting with established findings and integrating them with more recent ones. In particular, advances in the genetics field will be examined, assessing them in relation to both the clinical manifestations and histopathological findings, as well as considering the link with other diseases, such as amyotrophic lateral sclerosis (ALS). Furthermore, the current diagnostic criteria will be explored, including neuroimaging methods, nuclear medicine investigations, and biomarkers on biological fluids. Of note, the promising information provided by neurophysiological investigations, i.e., electroencephalography and non-invasive brain stimulation techniques, concerning the alterations in brain networks and neurotransmitter systems will be reviewed. Finally, current and experimental therapies will be considered.
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Affiliation(s)
- Annibale Antonioni
- Unit of Clinical Neurology, Neurosciences and Rehabilitation Department, University of Ferrara, 44121 Ferrara, Italy
- Doctoral Program in Translational Neurosciences and Neurotechnologies, University of Ferrara, 44121 Ferrara, Italy
| | - Emanuela Maria Raho
- Unit of Clinical Neurology, Neurosciences and Rehabilitation Department, University of Ferrara, 44121 Ferrara, Italy
| | - Piervito Lopriore
- Neurological Institute, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
| | - Antonia Pia Pace
- Institute of Radiology, Department of Medicine, University of Udine, University Hospital S. Maria della Misericordia, Azienda Sanitaria-Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Raffaela Rita Latino
- Complex Structure of Neurology, Emergency Department, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy
| | - Martina Assogna
- Centro Demenze, Policlinico Tor Vergata, University of Rome 'Tor Vergata', 00133 Rome, Italy
- Non Invasive Brain Stimulation Unit, Istituto di Ricovero e Cura a Carattere Scientifico Santa Lucia, 00179 Rome, Italy
| | - Michelangelo Mancuso
- Neurological Institute, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
| | - Daniela Gragnaniello
- Nuerology Unit, Neurosciences and Rehabilitation Department, Ferrara University Hospital, 44124 Ferrara, Italy
| | - Enrico Granieri
- Unit of Clinical Neurology, Neurosciences and Rehabilitation Department, University of Ferrara, 44121 Ferrara, Italy
| | - Maura Pugliatti
- Unit of Clinical Neurology, Neurosciences and Rehabilitation Department, University of Ferrara, 44121 Ferrara, Italy
| | - Francesco Di Lorenzo
- Non Invasive Brain Stimulation Unit, Istituto di Ricovero e Cura a Carattere Scientifico Santa Lucia, 00179 Rome, Italy
| | - Giacomo Koch
- Non Invasive Brain Stimulation Unit, Istituto di Ricovero e Cura a Carattere Scientifico Santa Lucia, 00179 Rome, Italy
- Iit@Unife Center for Translational Neurophysiology, Istituto Italiano di Tecnologia, 44121 Ferrara, Italy
- Section of Human Physiology, Neurosciences and Rehabilitation Department, University of Ferrara, 44121 Ferrara, Italy
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6
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Loi SM, Tsoukra P, Sun E, Chen Z, Wibawa P, Biase MD, Farrand S, Eratne D, Kelso W, Evans A, Walterfang M, Velakoulis D. Survival in Huntington's disease and other young-onset dementias. Int J Geriatr Psychiatry 2023; 38:e5913. [PMID: 37062919 PMCID: PMC10946957 DOI: 10.1002/gps.5913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 04/04/2023] [Indexed: 04/18/2023]
Abstract
OBJECTIVES To compare survival and risk factors associated with mortality in common young-onset dementias (YOD) including Huntington's disease. METHODS This retrospective cohort study included inpatients from an Australian specialist neuropsychiatry service, over 20 years. Dementia diagnoses were based on consensus criteria and Huntington's disease (HD) was confirmed genetically. Mortality and cause of death were determined using linkage to the Australian Institute of Health and Welfare National Death Index. RESULTS There were 386 individuals with YOD included. The dementia types included frontotemporal dementia (FTD) (24.5%), HD (21.2%) and Alzheimer's disease (AD) (20.5%). 63% (n = 243) individuals had died. The longest median survival was for those who had HD, 18.8 years from symptom onset and with a reduced mortality risk compared to AD and FTD (hazard ratio 0.5). Overall, people with YOD had significantly increased mortality, of 5-8 times, compared to the general population. Females with a YOD had higher standardised mortality ratio compared to males (9.3 vs. 4.9) overall. The most frequent cause of death in those with HD was reported as HD, with other causes of death in the other YOD-subtypes related to dementia and mental/behavioural disorders. DISCUSSION This is the first Australian study to investigate survival and risk factors of mortality in people with YOD. YOD has a significant risk of death compared to the general population. Our findings provide useful clinical information for people affected by YOD as well as future planning and service provision.
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Affiliation(s)
- Samantha M. Loi
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
- Department of PsychiatryThe University of MelbourneParkvilleVictoriaAustralia
| | | | - Emily Sun
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
| | - Zhibin Chen
- School of Public Health and Preventive MedicineMonash UniversityClaytonVictoriaAustralia
| | - Pierre Wibawa
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
| | - Maria di Biase
- Department of PsychiatryThe University of MelbourneParkvilleVictoriaAustralia
| | - Sarah Farrand
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
| | - Dhamidhu Eratne
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
- Department of PsychiatryThe University of MelbourneParkvilleVictoriaAustralia
- Florey Institute of Neuroscience and Mental HealthParkvilleVictoriaAustralia
| | - Wendy Kelso
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
| | - Andrew Evans
- Department of MedicineRoyal Melbourne HospitalParkvilleVictoriaAustralia
| | - Mark Walterfang
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
- Department of PsychiatryThe University of MelbourneParkvilleVictoriaAustralia
- Florey Institute of Neuroscience and Mental HealthParkvilleVictoriaAustralia
| | - Dennis Velakoulis
- NeuropsychiatryNorthWestern Mental Health, Melbourne HealthRoyal Melbourne HospitalParkvilleVictoriaAustralia
- Department of PsychiatryThe University of MelbourneParkvilleVictoriaAustralia
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Loi SM, Cations M, Velakoulis D. Young-onset dementia diagnosis, management and care: a narrative review. Med J Aust 2023; 218:182-189. [PMID: 36807325 PMCID: PMC10952480 DOI: 10.5694/mja2.51849] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 02/21/2023]
Abstract
Young-onset dementia comprises a heterogeneous range of dementias, with onset at less than 65 years of age. These include primary dementias such as Alzheimer disease, frontotemporal and vascular dementias; genetic/familial dementias; metabolic disorders; and secondary dementias such as those that result from alcohol use disorder, traumatic brain injury, and infections. The presentation of young-onset dementia is varied and may include cognitive, psychiatric and neurological symptoms. Diagnostic delay is common, with a frequent diagnostic conundrum being, "Is this young-onset dementia or is this psychiatric?". For assessment and accurate diagnosis, a thorough screen is recommended, such as collateral history and investigations such as neuroimaging, lumbar puncture, neuropsychology, and genetic testing. The management of young-onset dementia needs to be age-appropriate and multidisciplinary, with timely access to services and consideration of the family (including children).
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Affiliation(s)
- Samantha M Loi
- University of MelbourneMelbourneVIC
- Royal Melbourne HospitalMelbourneVIC
| | | | - Dennis Velakoulis
- University of MelbourneMelbourneVIC
- Royal Melbourne HospitalMelbourneVIC
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8
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Eratne D, Keem M, Lewis C, Kang M, Walterfang M, Farrand S, Loi S, Kelso W, Cadwallader C, Berkovic SF, Li QX, Masters CL, Collins S, Santillo A, Velakoulis D. Cerebrospinal fluid neurofilament light chain differentiates behavioural variant frontotemporal dementia progressors from non-progressors. J Neurol Sci 2022; 442:120439. [PMID: 36201960 DOI: 10.1016/j.jns.2022.120439] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 09/05/2022] [Accepted: 09/25/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Distinguishing behavioural variant frontotemporal dementia (bvFTD) from non-neurodegenerative 'non-progressor' mimics of frontal lobe dysfunction, can be one of the most challenging clinical dilemmas. A biomarker of neuronal injury, neurofilament light chain (NfL), could reduce misdiagnosis and delay. METHODS Cerebrospinal fluid (CSF) NfL, amyloid beta 1-42 (AB42), total and phosphorylated tau (T-tau, P-tau) levels were examined in patients with an initial diagnosis of bvFTD. Based on follow-up information, patients were categorised as Progressors or Non-Progressors: further subtyped into Non-Progressor Revised (non-neurological/neurodegenerative final diagnosis), and Non-Progressor Static (static deficits, not fully explained by non-neurological/neurodegenerative causes). RESULTS Forty-three patients were included: 20 Progressors, 23 Non-Progressors (15 Non-Progressor Revised, 8 Non-Progressor Static), and 20 controls. NfL concentrations were lower in Non-Progressors (Non-Progressors Mean, M = 554 pg/mL, 95%CI:[461, 675], Non-Progressor Revised M = 459 pg/mL, 95%CI:[385, 539], and Non-Progressor Static M = 730 pg/mL, 95%CI:[516, 940]), compared to Progressors (M = 2397 pg/mL, 95%CI:[1607, 3332]). NfL distinguished Progressors from Non-Progressors with the highest accuracy (area under the curve 0.92, 90%/87% sensitivity/specificity, 86%/91% positive/negative predictive value, 88% accuracy). Non-Progressor Static tended to have higher T-tau and P-tau levels compared to Non-Progressor Revised Diagnoses. CONCLUSION This study demonstrated strong diagnostic utility of CSF NfL to distinguish bvFTD from non-progressor variants, at baseline, with high accuracy, in a real-world clinical setting. This has important clinical implications, to improve outcomes for patients and clinicians facing this challenging clinical dilemma, healthcare services, and clinical trials. Further research is required to investigate heterogeneity within the non-progressor group and potential diagnostic algorithms, and prospective studies are underway assessing plasma NfL.
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Affiliation(s)
- Dhamidhu Eratne
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia; National Dementia Diagnostics Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia.
| | - Michael Keem
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
| | - Courtney Lewis
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
| | - Matthew Kang
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
| | - Mark Walterfang
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia; National Dementia Diagnostics Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Sarah Farrand
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
| | - Samantha Loi
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
| | - Wendy Kelso
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia
| | | | - Samuel F Berkovic
- Epilepsy Research Centre, Department of Medicine, Austin Health, The University of Melbourne, Heidelberg, VIC, Australia
| | - Qiao-Xin Li
- National Dementia Diagnostics Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Colin L Masters
- National Dementia Diagnostics Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Steven Collins
- National Dementia Diagnostics Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Alexander Santillo
- Clinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Sölvegatan 18, Sweden
| | - Dennis Velakoulis
- Neuropsychiatry, Royal Melbourne Hospital, Parkville, VIC, Australia; Melbourne Neuropsychiatry Centre & Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
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Magrath Guimet N, Zapata-Restrepo LM, Miller BL. Advances in Treatment of Frontotemporal Dementia. J Neuropsychiatry Clin Neurosci 2022; 34:316-327. [PMID: 35578801 DOI: 10.1176/appi.neuropsych.21060166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this review, the authors explored the clinical features of frontotemporal dementia (FTD), focusing on treatment. The clinical features of FTD are unique, with disinhibition, apathy, loss of empathy, and compulsions common. Motor changes occur later in the illness. The two major proteins that aggregate in the brain with FTD are tau and TDP-43, whereas a minority of patients aggregate FET proteins, primarily the FUS protein. Genetic causes include mutations in MAPT, GRN, and C9orf72. There are no medications that can slow FTD progression, although new therapies for the genetic forms of FTD are moving into clinical trials. Once a diagnosis is made, therapies should begin, focusing on the family and the patient. In the setting of FTD, families experience a severe burden associated with caregiving, and the clinician should focus on alleviating this burden. Advice around legal and financial issues is usually helpful. Careful consideration of environmental changes to cope with abnormal behaviors is essential. Most compounds that have been used to treat dementia of the Alzheimer's disease type are not effective in FTD, and cholinesterase inhibitors and memantine should be avoided. Although the data are scant, there is some evidence that antidepressants and second-generation antipsychotics may help individual patients.
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Affiliation(s)
- Nahuel Magrath Guimet
- Global Brain Health Institute, University of California, San Francisco (all authors); Institute of Neuroscience, Trinity College, Dublin (all authors); Department of Cognitive Neurology, Neuropsychiatry and Neuropsychology, Instituto Neurológico Fleni, Buenos Aires (Magrath Guimet); Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco (Miller); and Department of Medical Sciences, Pontifical Xaverian University Cali, Cali, Colombia (Zapata-Restrepo), Department of Psychiatry, Fundación Valle del Lili, Cali, Colombia (Zapata-Restrepo)
| | - Lina M Zapata-Restrepo
- Global Brain Health Institute, University of California, San Francisco (all authors); Institute of Neuroscience, Trinity College, Dublin (all authors); Department of Cognitive Neurology, Neuropsychiatry and Neuropsychology, Instituto Neurológico Fleni, Buenos Aires (Magrath Guimet); Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco (Miller); and Department of Medical Sciences, Pontifical Xaverian University Cali, Cali, Colombia (Zapata-Restrepo), Department of Psychiatry, Fundación Valle del Lili, Cali, Colombia (Zapata-Restrepo)
| | - Bruce L Miller
- Global Brain Health Institute, University of California, San Francisco (all authors); Institute of Neuroscience, Trinity College, Dublin (all authors); Department of Cognitive Neurology, Neuropsychiatry and Neuropsychology, Instituto Neurológico Fleni, Buenos Aires (Magrath Guimet); Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco (Miller); and Department of Medical Sciences, Pontifical Xaverian University Cali, Cali, Colombia (Zapata-Restrepo), Department of Psychiatry, Fundación Valle del Lili, Cali, Colombia (Zapata-Restrepo)
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Schönecker S, Martinez-Murcia FJ, Rauchmann BS, Franzmeier N, Prix C, Wlasich E, Loosli SV, Bochmann K, Gorriz Saez JM, Laforce R, Ducharme S, Tartaglia MC, Finger E, de Mendonça A, Santana I, Sanchez-Valle R, Moreno F, Sorbi S, Tagliavini F, Borroni B, Otto M, Synofzik M, Galimberti D, Vandenberghe R, van Swieten J, Butler C, Gerhard A, Graff C, Danek A, Rohrer JD, Masellis M, Rowe J, Levin J. Frequency and Longitudinal Course of Motor Signs in Genetic Frontotemporal Dementia. Neurology 2022; 99:e1032-e1044. [PMID: 35948443 PMCID: PMC9519250 DOI: 10.1212/wnl.0000000000200828] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 04/21/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Frontotemporal dementia (FTD) is a highly heritable disorder. The majority of genetic cases are caused by autosomal dominant pathogenic variants in the chromosome 9 open reading frame 72 (c9orf72), progranulin (GRN), and microtubule-associated protein tau (MAPT) gene. As motor disorders are increasingly recognized as part of the clinical spectrum, the current study aimed to describe motor phenotypes caused by genetic FTD, quantify their temporal association, and investigate their regional association with brain atrophy. METHODS We analyzed baseline visit data of known carriers of a pathogenic variant in the c9orf72, GRN, or MAPT gene from the Genetic Frontotemporal Dementia Initiative cohort study. Principal component analysis with varimax rotation was performed to identify motor sign clusters that were compared with respect to frequency and severity between groups. Associations with cross-sectional atrophy patterns were determined using voxel-wise regression. We applied linear mixed effects models to assess whether groups differed in the association between motor signs and estimated time to symptom onset. RESULTS A total of 322 pathogenic variant carriers were included in the analysis: 122 c9orf72 (79 presymptomatic), 143 GRN (112 presymptomatic), and 57 MAPT (43 presymptomatic) pathogenic variant carriers. Principal component analysis revealed 5 motor clusters, which we call progressive supranuclear palsy (PSP)-like, bulbar amyotrophic lateral sclerosis (ALS)-like, mixed/ALS-like, Parkinson disease (PD) like, and corticobasal syndrome-like motor phenotypes. There was no significant group difference in the frequency of signs of different motor phenotypes. However, mixed/ALS-like motor signs were most frequent, followed by PD-like motor signs. Although the PSP-like phenotype was associated with mesencephalic atrophy, the mixed/ALS-like phenotype was associated with motor cortex and corticospinal tract atrophy. The PD-like phenotype was associated with widespread cortical and subcortical atrophy. Estimated time to onset, genetic group and their interaction influenced motor signs. In c9orf72 pathogenic variant carriers, motor signs could be detected up to 25 years before expected symptom onset. DISCUSSION These results indicate the presence of multiple natural clusters of motor signs in genetic FTD, each correlated with specific atrophy patterns. Their motor severity depends on time and the affected gene. These clinicogenetic associations can guide diagnostic evaluations and the design of clinical trials for new disease-modifying and preventive treatments.
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Affiliation(s)
- Sonja Schönecker
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Francisco J Martinez-Murcia
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Boris-Stephan Rauchmann
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Nicolai Franzmeier
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Catharina Prix
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Elisabeth Wlasich
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Sandra V Loosli
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Katja Bochmann
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Juan-Manuel Gorriz Saez
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Robert Laforce
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Simon Ducharme
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Maria Carmela Tartaglia
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Elizabeth Finger
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Alexandre de Mendonça
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Isabel Santana
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Raquel Sanchez-Valle
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Fermin Moreno
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Sandro Sorbi
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Fabrizio Tagliavini
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Barbara Borroni
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Markus Otto
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Matthis Synofzik
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Daniela Galimberti
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Rik Vandenberghe
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - John van Swieten
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Christopher Butler
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Alexander Gerhard
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Caroline Graff
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Adrian Danek
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Jonathan D Rohrer
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Mario Masellis
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - James Rowe
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany
| | - Johannes Levin
- From the Department of Neurology (S. Schönecker, C.P., E.W., S.V.L., A.D., J.L.), Ludwig-Maximilians-Universität München, Germany; Department of Signal Theory Networking and Communications (F.J.M.-M., J.-M.G.S.), Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Spain; Institute for Clinical Radiology (B.-S.R.), Institute for Stroke and Dementia Research (N.F.), and Institute of Neuroradiology (K.B.), Ludwig-Maximilians-Universität München, Germany; Département des Sciences Neurologiques (R.L.), Clinique Interdisciplinaire de Mémoire (CIME); McConnell Brain Imaging Centre (S.D.), Montreal Neurological Institute, McGill University; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Quebec; Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurology and Laboratory of Neurosciences (A.M.), Faculty of Medicine, University of Lisbon; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, Centro Hospitalar e Universitário de Coimbra; Center for Neuroscience and Cell Biology (I.S.), Faculty of Medicine, University of Coimbra, Portugal; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer; Institut d'Investigació Biomèdica August Pi I Sunyer (R.S.-V.), Barcelona; Department of Neurology (F.M.), Donostio University Hospital, San Sebastian; Neuroscience Area (F.M.), Biodonostia Health Research Institute, San Sebastian, Gipuzkoa, Spain; Department of Neuroscience, Psychology, Drug Research and Child Health (S. Sorbi), University of Florence; IRCCS Fondazione Don Carlo Gnocchi (S. Sorbi), Florence; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (F.T.), Milano; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Department of Neurology (M.O.), University Hospital Ulm; Department of Neurology (M.O.), Martin-Luther-University Halle-Wittenberg, Germany Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; Center for Neurodegenerative Diseases (M.S.), Tübingen, Germany; Fondazione IRCCS Ospediale Policlinico (D.G.), Milan; Centro Dino Ferrari (D.G.), University of Milan, Italy; Leuven Brain Institute (LBI) (R.V.), KU Leuven; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven; Neurology Department (R.V.), UZ Leuven, Belgium; Department of Neurology (J.S.), Erasmus Medical Centre, Rotterdam, the Netherlands; Nuffield Department of Clinical Neurosciences (C.B.), Medical Sciences Division, University of Oxford; Department of Brain Sciences (C.B.), Imperial College London; Wolfson Molecular Imaging Centre (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, United Kingdom; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Swedish FTD Initiative (C.G.), Stockholm; Division of Neurogeriatrics (C.G.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Solna; Unit for Hereditary Dementias (C.G.), Theme Aging, Karolinska University Hospital, Stockholm, Sweden; Dementia Research Centre (J.D.R.), University College London, United Kingdom; Hurvitz Brain Sciences Program (M.M.), Sunnybrook Research Institute, University of Toronto; Division of Neurology (M.M.), Department of Medicine, University of Toronto; Cognitive and Movement Disorders Clinic (M.M.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Cognition and Brain Sciences Unit (J.R.), Medical Research Council; Department of Clinical Neurosciences (J.R.), University of Cambridge; Cambridge University Hospitals NHS Trust (J.R.), United Kingdom; German Center for Neurodegenerative Diseases (DZNE) (J.L.); Munich Cluster for Systems Neurology (SyNergy) (J.L.); and European Reference Network for Rare Neurological Diseases (ERN-RND) (J.L.), Munich, Germany.
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11
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Ooi S, Patel SK, Eratne D, Kyndt C, Reidy N, Lewis C, Lee SC, Darby D, Brodtmann A. Plasma Neurofilament Light Chain and Clinical Diagnosis in Frontotemporal Dementia Syndromes. J Alzheimers Dis 2022; 89:1221-1231. [DOI: 10.3233/jad-220272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: Frontotemporal dementia (FTD) syndromes, mimics, phenocopy (phFTD), and slowly progressive behavioral variant FTD (bvFTD) can be difficult to distinguish clinically. Biomarkers such as neurofilament light chain (NfL) may be helpful. Objective: To study plasma NfL levels in people with FTD syndromes and determine if plasma NfL can distinguish between FTD syndromes and phFTD. Methods: Plasma NfL levels were estimated using both Simoa ® Quanterix HD-X™ and SR-X™ machines grouped via final diagnosis after investigation and review. Results: Fifty participants were studied: bvFTD = 20, semantic variant FTD (svFTD) = 11, non-fluent variant FTD (nfvFTD) = 9, FTD with motor neuron disease (MND) = 4, phFTD = 2, slow progressors = 3, FTD mimic = 1, mean age 67.2 (SD 8.4) years. NfL levels were significantly higher in the FTD group compared to phenocopy group (p = 0.003). Median NfL (IQR) pg/mL was comparable in the FTD syndromes: bvFTD 41.10 (50.72), svFTD 44.38 (16.61), and nfvFTD 42.61 (22.93), highest in FTD with MND 79.67 (45.32) and lowest in both phFTD 13.99 (0.79) and slow progressors 17.97 (3.62). Conclusion: Plasma NfL appears to differentiate FTD syndromes and mimics. However, a lower NfL may predict a slower, but not necessarily lack of, neurodegeneration and therefore appears limited distinguishing slow progressors from FTD phenocopies. Larger numbers of patients from all clinical groups are required to strengthen diagnostic utility.
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Affiliation(s)
- Suyi Ooi
- Eastern Cognitive Disorders Clinic, Eastern Health, Box Hill, VIC, Australia
- Eastern Clinical Research Unit, Eastern Health Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, VIC, Australia
- Royal Melbourne Hospital, Department of Neurology, Parkville, VIC, Australia
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Sheila K Patel
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Dhamidhu Eratne
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
- Neuropsychiatry and Melbourne Neuropsychiatry Centre, Royal Melbourne Hospital and University of Melbourne, Parkville, VIC, Australia
| | - Christopher Kyndt
- Eastern Cognitive Disorders Clinic, Eastern Health, Box Hill, VIC, Australia
- Eastern Clinical Research Unit, Eastern Health Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, VIC, Australia
- Royal Melbourne Hospital, Department of Neurology, Parkville, VIC, Australia
| | - Natalie Reidy
- Eastern Cognitive Disorders Clinic, Eastern Health, Box Hill, VIC, Australia
| | - Courtney Lewis
- Eastern Cognitive Disorders Clinic, Eastern Health, Box Hill, VIC, Australia
- Neuropsychiatry and Melbourne Neuropsychiatry Centre, Royal Melbourne Hospital and University of Melbourne, Parkville, VIC, Australia
| | - Sarah C.M. Lee
- Eastern Clinical Research Unit, Eastern Health Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, VIC, Australia
- Calvary Health Care Bethlehem, Parkdale, VIC, Australia
| | - David Darby
- Eastern Cognitive Disorders Clinic, Eastern Health, Box Hill, VIC, Australia
- Eastern Clinical Research Unit, Eastern Health Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, VIC, Australia
- Royal Melbourne Hospital, Department of Neurology, Parkville, VIC, Australia
- Alfred Health, Department of Neurology, Prahran, Australia
| | - Amy Brodtmann
- Eastern Cognitive Disorders Clinic, Eastern Health, Box Hill, VIC, Australia
- Eastern Clinical Research Unit, Eastern Health Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, VIC, Australia
- Royal Melbourne Hospital, Department of Neurology, Parkville, VIC, Australia
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
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12
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Mori K, Ikeda M. Biological basis and psychiatric symptoms in frontotemporal dementia. Psychiatry Clin Neurosci 2022; 76:351-360. [PMID: 35557018 DOI: 10.1111/pcn.13375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/08/2022] [Accepted: 04/21/2022] [Indexed: 12/01/2022]
Abstract
Frontotemporal dementia is a neurodegenerative disease characterized by focal degeneration of the frontal and temporal lobes, clinically presenting with disinhibited behavior, personality changes, progressive non-fluent aphasia and/or impaired semantic memory. Research progress has been made in re-organizing the clinical concept of frontotemporal dementia and neuropathological classification based on multiple accumulating proteins. Alongside this progress a list of genetic mutations or variants that are causative or increase the risk of frontotemporal dementia have been identified and some of these gene products are extensively studied. However, there are still a lot of points that need to be overcome, including lack of specific diagnostic biomarker which enable antemortem diagnosis of underlying neurodegenerative process, and lack of disease modifying therapy which could prevent disease progression. Early and precise diagnosis of frontotemporal dementia is urgently required. In this context, how to define prodromal frontotemporal dementia and early differential diagnosis from primary psychiatric disorders are also important issues. In this review we will summarize and discuss current understanding of biological basis and psychiatric symptoms in frontotemporal dementia.
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Affiliation(s)
- Kohji Mori
- Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan
| | - Manabu Ikeda
- Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan
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13
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Poos JM, MacDougall A, van den Berg E, Jiskoot LC, Papma JM, van der Ende EL, Seelaar H, Russell LL, Peakman G, Convery R, Pijnenburg YAL, Moreno F, Sanchez-Valle R, Borroni B, Laforce R, Doré MC, Masellis M, Tartaglia MC, Graff C, Galimberti D, Rowe JB, Finger E, Synofzik M, Vandenberghe R, Mendonça A, Tiraboschi P, Santana I, Ducharme S, Butler C, Gerhard A, Levin J, Danek A, Otto M, Le Ber I, Pasquier F, van Swieten J, Rohrer JD. Longitudinal Cognitive Changes in Genetic Frontotemporal Dementia Within the GENFI Cohort. Neurology 2022; 99:e281-e295. [PMID: 35483895 PMCID: PMC9302936 DOI: 10.1212/wnl.0000000000200384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/25/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Disease-modifying therapeutic trials for genetic frontotemporal dementia (FTD) are underway, but sensitive cognitive outcome measures are lacking. The aim of this study was to identify such cognitive tests in early stage FTD by investigating cognitive decline in a large cohort of genetic FTD pathogenic variant carriers and by investigating whether gene-specific differences are moderated by disease stage (asymptomatic, prodromal, and symptomatic). METHODS C9orf72, GRN, and MAPT pathogenic variant carriers as well as controls underwent a yearly neuropsychological assessment covering 8 cognitive domains as part of the Genetic FTD Initiative, a prospective multicenter cohort study. Pathogenic variant carriers were stratified according to disease stage using the global Clinical Dementia Rating (CDR) plus National Alzheimer's Coordinating Center (NACC) FTLD score (0, 0.5, or ≥1). Linear mixed-effects models were used to investigate differences between genetic groups and disease stages as well as the 3-way interaction between time, genetic group, and disease stage. RESULTS A total of 207 C9orf72, 206 GRN, and 86 MAPT pathogenic variant carriers and 255 controls were included. C9orf72 pathogenic variant carriers performed lower on attention, executive function, and verbal fluency from CDR plus NACC FTLD 0 onwards, with relatively minimal decline over time regardless of the CDR plus NACC FTLD score (i.e., disease progression). The cognitive profile in MAPT pathogenic variant carriers was characterized by lower memory performance at CDR plus NACC FTLD 0.5, with decline over time in language from the CDR plus NACC FTLD 0.5 stage onwards, and executive dysfunction rapidly developing at CDR plus NACC FTLD ≥1. GRN pathogenic variant carriers declined on verbal fluency and visuoconstruction in the CDR plus NACC FTLD 0.5 stage, with progressive decline in other cognitive domains starting at CDR plus NACC FTLD ≥1. DISCUSSION We confirmed cognitive decline in the asymptomatic and prodromal stage of genetic FTD. Specifically, tests for attention, executive function, language, and memory showed clear differences between genetic groups and controls at baseline, but the speed of change over time differed depending on genetic group and disease stage. This confirms the value of neuropsychological assessment in tracking clinical onset and progression and could inform clinical trials in selecting sensitive end points for measuring treatment effects as well as characterizing the best time window for starting treatment.
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Affiliation(s)
- Jackie M Poos
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Amy MacDougall
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Esther van den Berg
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Lize C Jiskoot
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Janne M Papma
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Emma L van der Ende
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Harro Seelaar
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Lucy L Russell
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Georgia Peakman
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Rhian Convery
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Yolande A L Pijnenburg
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Fermin Moreno
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Raquel Sanchez-Valle
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Barbara Borroni
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Robert Laforce
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Marie-Claire Doré
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Mario Masellis
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Maria Carmela Tartaglia
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Caroline Graff
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Daniela Galimberti
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - James B Rowe
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Elizabeth Finger
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Matthis Synofzik
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Rik Vandenberghe
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Alexandre Mendonça
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Pietro Tiraboschi
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Isabel Santana
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Simon Ducharme
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Christopher Butler
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Alexander Gerhard
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Johannes Levin
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Adrian Danek
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Markus Otto
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Isabelle Le Ber
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Florence Pasquier
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - John van Swieten
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France
| | - Jonathan D Rohrer
- From the Department of Neurology (J.M. Poos, E.v.d.B., L.C.J., J.M. Papma, E.L.v.d.E., H.S., J.v.S.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Dementia Research Centre (J.M. Poos, L.C.J., L.L.R., G.P., R.C., J.D.R.), Department of Neurodegenerative Disease, UCL Institute of Neurology; Department of Medical Statistics (A.M.), London School of Hygiene and Tropical Medicine, UK; Department of Neurology (Y.A.L.P.), Alzheimer Center, Amsterdam University Medical Center, Amsterdam Neuroscience, the Netherlands; Cognitive Disorders Unit (F.M.), Department of Neurology, Donostia University Hospital, San Sebastian, Gipuzkoa; Alzheimer's Disease and Other Cognitive Disorders Unit (R.S.-V.), Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, University of Barcelona, Spain; Centre for Neurodegenerative Disorders (B.B.), Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Italy; Clinique Interdisciplinaire de Mémoire (R.L., M.-C.D.), Département des Sciences Neurologiques, Université Laval, Québec; Sunnybrook Health Sciences Centre (M.M.), Sunnybrook Research Institute and Tanz Centre for Research in Neurodegenerative Diseases (M.C.T.), University of Toronto, Ontario, Canada; Department of Geriatric Medicine (C.G.), Karolinska University Hospital-Huddinge, Stockholm, Sweden; Centro Dino Ferrari (D.G.), University of Milan; Fondazione IRCCS Ca' Granda (D.G.), Ospedale Policlinico, Neurodegenerative Diseases Unit, Milan, Italy; Department of Clinical Neurosciences (J.B.R.), University of Cambridge, UK; Department of Clinical Neurological Sciences (E.F.), University of Western Ontario, London, Canada; Department of Neurodegenerative Diseases (M.S.), Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen; German Center for Neurodegenerative Diseases (DZNE) (M.S.), Tübingen, Germany; Laboratory for Cognitive Neurology (R.V.), Department of Neurosciences, KU Leuven, Belgium; Faculty of Medicine (A.M.), University of Lisbon, Portugal; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Neurologica Carlo Besta (P.T.), Milan, Italy; Faculty of Medicine (I.S.), University of Coimbra, Portugal; Department of Psychiatry (S.D.), McGill University Health Centre, McGill University, Montreal, Québec, Canada; Department of Clinical Neurology (C.B.), University of Oxford; Divison of Neuroscience & Experimental Psychology (A.G.), Faculty of Medicine, Biology and Health, University of Manchester, UK; Departments of Geriatric Medicine and Nuclear Medicine (A.G.), Essen University Hospital, Germany; Department of Neurology (J.L., A.D.), Ludwig-Maximilians-University, Munich; German Center for Neurodegenerative Diseases (DZNE) (J.L.), Munich; Munich Cluster for Systems Neurology (SyNergy) (J.L.); Department of Neurology (M.O.), University of Ulm, Germany; Sorbonne Université (I.L.B.), Paris Brain Institute-Institut du Cerveau-ICM, Inserm U1127, CNRS UMR 7225, AP-HP-Hôpital Pitié-Salpêtrière; Centre de Référence des Démences Rares ou Précoces (I.L.B.), IM2A, Département de Neurologie, AP-HP-Hôpital Pitié-Salpêtrière; Univ Lille (F.P.); Inserm 1172 (F.P.); and CHU (F.P.), CNR-MAJ, Labex Distalz, LiCEND, Lille, France.
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Loi SM, Goh AMY, Mocellin R, Malpas CB, Parker S, Eratne D, Farrand S, Kelso W, Evans A, Walterfang M, Velakoulis D. Time to diagnosis in younger-onset dementia and the impact of a specialist diagnostic service. Int Psychogeriatr 2022; 34:367-75. [PMID: 32854788 DOI: 10.1017/S1041610220001489] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVES While early diagnosis of younger-onset dementia (YOD) is crucial in terms of accessing appropriate services and future planning, diagnostic delays are common. This study aims to identify predictors of delay to diagnosis in a large sample of people with YOD and to investigate the impact of a specialist YOD service on this time to diagnosis. DESIGN A retrospective cross-sectional study. SETTING The inpatient unit of a tertiary neuropsychiatry service in metropolitan Victoria, Australia. PARTICIPANTS People diagnosed with a YOD. MEASUREMENTS AND METHODS We investigated the following predictors using general linear modeling: demographics including sex and location, age at onset, dementia type, cognition, psychiatric diagnosis, and number of services consulted with prior to diagnosis. RESULTS A total of 242 inpatients were included. The mean time to diagnosis was 3.4 years. Significant predictors of delay included younger age at onset, dementia type other than Alzheimer's disease (AD) and behavioral-variant frontotemporal dementia (bvFTD), and increased number of services consulted. These predictors individually led to an increased diagnostic delay of approximately 19 days, 5 months, and 6 months, respectively. A specialized YOD service reduced time to diagnosis by 12 months. CONCLUSION We found that younger age at onset, having a dementia which was not the most commonly occurring AD or bvFTD, and increasing number of services were significant predictors of diagnostic delay. A novel result was that a specialist YOD service may decrease diagnostic delay, highlighting the importance of such as service in reducing time to diagnosis as well as providing post-diagnostic support.
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15
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Kim ES, Pliskin NH, Caserta MT. Sustained Long-term Improvement in Neuropsychiatric Symptoms of an Individual With Initial bvFTD Diagnosis: A Case Report. Cogn Behav Neurol 2022; 35:76-82. [PMID: 35239601 DOI: 10.1097/WNN.0000000000000298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 06/28/2021] [Indexed: 11/25/2022]
Abstract
The behavioral variant of frontotemporal dementia (bvFTD) is a neurodegenerative disease that is diagnosed by progressive neuropsychiatric changes and supportive neuroimaging. Making an accurate diagnosis of bvFTD is a challenging process that can be complicated by the presence of a subset of nonprogressive, or phenocopy, cases whose symptoms remain stable. Our patient, who presented with neuropsychiatric symptoms that are characteristic of bvFTD, improved and stabilized after thorough neuropsychiatric and neuropsychological evaluation and treatment. Our case illustrates that, despite diagnostic uncertainties, appropriate evaluation and treatment can lead to improvement and stabilization of neuropsychiatric symptoms in individuals presumed to have bvFTD.
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Boeve BF, Boxer AL, Kumfor F, Pijnenburg Y, Rohrer JD. Advances and controversies in frontotemporal dementia: diagnosis, biomarkers, and therapeutic considerations. Lancet Neurol 2022; 21:258-272. [DOI: 10.1016/s1474-4422(21)00341-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 08/16/2021] [Accepted: 09/28/2021] [Indexed: 12/13/2022]
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Yu H, Koh S. Is Telomere Length Shortening a Risk Factor for Neurodegenerative Disorders? Dement Neurocogn Disord 2022; 21:83. [PMID: 35949423 PMCID: PMC9340245 DOI: 10.12779/dnd.2022.21.3.83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 06/30/2022] [Indexed: 11/27/2022] Open
Abstract
Telomeres are located at the end of chromosomes. They are known to protect chromosomes and prevent cellular senescence. Telomere length shortening has been considered an important marker of aging. Many studies have reported this concept in connection with neurodegenerative disorders. Considering the role of telomeres, it seems that longer telomeres are beneficial while shorter telomeres are detrimental in preventing neurodegenerative disorders. However, several studies have shown that people with longer telomeres might also be vulnerable to neurodegenerative disorders. Before these conflicting results can be explained through large-scale longitudinal clinical studies on the role of telomere length in neurodegenerative disorders, it would be beneficial to simultaneously review these opposing results. Understanding these conflicting results might help us plan future studies to reveal the role of telomere length in neurodegenerative disorders. In this review, these contradictory findings are thoroughly discussed, with the aim to better understand the role of telomere length in neurodegenerative disorders.
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18
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Saracino D, Dorgham K, Camuzat A, Rinaldi D, Rametti-Lacroux A, Houot M, Clot F, Martin-Hardy P, Jornea L, Azuar C, Migliaccio R, Pasquier F, Couratier P, Auriacombe S, Sauvée M, Boutoleau-Bretonnière C, Pariente J, Didic M, Hannequin D, Wallon D, Colliot O, Dubois B, Brice A, Levy R, Forlani S, Le Ber I. Plasma NfL levels and longitudinal change rates in C9orf72 and GRN-associated diseases: from tailored references to clinical applications. J Neurol Neurosurg Psychiatry 2021; 92:1278-1288. [PMID: 34349004 PMCID: PMC8606463 DOI: 10.1136/jnnp-2021-326914] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/13/2021] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Neurofilament light chain (NfL) is a promising biomarker in genetic frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS). We evaluated plasma neurofilament light chain (pNfL) levels in controls, and their longitudinal trajectories in C9orf72 and GRN cohorts from presymptomatic to clinical stages. METHODS We analysed pNfL using Single Molecule Array (SiMoA) in 668 samples (352 baseline and 316 follow-up) of C9orf72 and GRN patients, presymptomatic carriers (PS) and controls aged between 21 and 83. They were longitudinally evaluated over a period of >2 years, during which four PS became prodromal/symptomatic. Associations between pNfL and clinical-genetic variables, and longitudinal NfL changes, were investigated using generalised and linear mixed-effects models. Optimal cut-offs were determined using the Youden Index. RESULTS pNfL levels increased with age in controls, from ~5 to~18 pg/mL (p<0.0001), progressing over time (mean annualised rate of change (ARC): +3.9%/year, p<0.0001). Patients displayed higher levels and greater longitudinal progression (ARC: +26.7%, p<0.0001), with gene-specific trajectories. GRN patients had higher levels than C9orf72 (86.21 vs 39.49 pg/mL, p=0.014), and greater progression rates (ARC:+29.3% vs +24.7%; p=0.016). In C9orf72 patients, levels were associated with the phenotype (ALS: 71.76 pg/mL, FTD: 37.16, psychiatric: 15.3; p=0.003) and remarkably lower in slowly progressive patients (24.11, ARC: +2.5%; p=0.05). Mean ARC was +3.2% in PS and +7.3% in prodromal carriers. We proposed gene-specific cut-offs differentiating patients from controls by decades. CONCLUSIONS This study highlights the importance of gene-specific and age-specific references for clinical and therapeutic trials in genetic FTD/ALS. It supports the usefulness of repeating pNfL measurements and considering ARC as a prognostic marker of disease progression. TRIAL REGISTRATION NUMBERS NCT02590276 and NCT04014673.
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Affiliation(s)
- Dario Saracino
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Aramis Project Team, Inria Paris Research Centre, Paris, France
| | - Karim Dorgham
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses-Paris (CIMI-Paris), Paris, France
| | - Agnès Camuzat
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,EPHE, PSL Research University, Paris, France
| | - Daisy Rinaldi
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France
| | - Armelle Rametti-Lacroux
- Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Paris Brain Institute-Institut du Cerveau (ICM), FRONTlab, Paris, France
| | - Marion Houot
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Centre of Excellence of Neurodegenerative Disease (CoEN), ICM, CIC Neurosciences, Département de Neurologie, AP-HP, Hôpital Pitié-Salpêtrière, Sorbonne Université, Paris, France
| | - Fabienne Clot
- UF de Neurogénétique Moléculaire et Cellulaire, Département de Génétique, AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, Paris, France
| | - Philippe Martin-Hardy
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France
| | - Ludmila Jornea
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France
| | - Carole Azuar
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Paris Brain Institute-Institut du Cerveau (ICM), FRONTlab, Paris, France
| | - Raffaella Migliaccio
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Paris Brain Institute-Institut du Cerveau (ICM), FRONTlab, Paris, France
| | - Florence Pasquier
- Univ Lille, Inserm U1171, CHU Lille, DistAlz, LiCEND, CNR-MAJ, Lille, France
| | | | - Sophie Auriacombe
- CMRR Nouvelle Aquitaine, Institut des Maladies Neurodégénératives Clinique (IMNc), CHU de Bordeaux Hôpital Pellegrin, Bordeaux, France
| | - Mathilde Sauvée
- CMRR de l'Arc Alpin, POLE PRéNeLE, CHU Grenoble Alpes, Grenoble, France
| | | | - Jérémie Pariente
- Department of Neurology, Toulouse University Hospital, Toulouse, France.,Toulouse NeuroImaging Centre (ToNIC), Inserm, UPS, University of Toulouse, Toulouse, France
| | - Mira Didic
- APHM, Timone, Service de Neurologie et Neuropsychologie, Hôpital Timone Adultes, Marseille, France.,Institut de Neurosciences des Systèmes (INS), Aix-Marseille University, Inserm, Marseille, France
| | - Didier Hannequin
- Department of Neurology and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Rouen, France
| | - David Wallon
- Department of Neurology and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Rouen, France
| | | | | | - Olivier Colliot
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Aramis Project Team, Inria Paris Research Centre, Paris, France
| | - Bruno Dubois
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Paris Brain Institute-Institut du Cerveau (ICM), FRONTlab, Paris, France
| | - Alexis Brice
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France
| | - Richard Levy
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Paris Brain Institute-Institut du Cerveau (ICM), FRONTlab, Paris, France
| | - Sylvie Forlani
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France
| | - Isabelle Le Ber
- Sorbonne Université, Paris Brain Institute - Institut du Cerveau - ICM, Inserm U1127, CNRS UMR 7225, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France .,Reference Centre for Rare or Early Dementias, IM2A, Départment de Neurologie, AP-HP - Hôpital Pitié-Salpêtrière, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Paris Brain Institute-Institut du Cerveau (ICM), FRONTlab, Paris, France
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19
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Geser F, Mitrovics TCG, Haybaeck J, Yilmazer-Hanke D. Premorbid de novo artistic creativity in frontotemporal dementia (FTD) syndromes. J Neural Transm (Vienna) 2021; 128:1813-1833. [PMID: 34618237 DOI: 10.1007/s00702-021-02426-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/26/2021] [Indexed: 12/18/2022]
Abstract
The emergence of new artistic activities or shifts in artistic style in patients with frontotemporal dementia (FTD) syndromes is well documented at or after disease onset. However, a closer look in the literature reveals emerging artistic creativity also before FTD onset, although the significance and underlying pathology of such creative endeavors remain elusive. Here, we systematically review relevant studies and report an additional FTD case to elaborate on artistic activities that developed years before disease manifestation by paying particular attention to the sequence of events in individual patients' biography and clinical history. We further discuss the FTD patient's creative activities in the context of their life events, other initial or "premorbid" dementia symptoms or risk factors described in the literature such as mental illness and mild behavioral impairment (MBI), as well as changes in neuronal systems (i.e., neuroimaging and neuropathology). In addition to our FTD patient, we identified five published cases with an FTD syndrome, including three with FTD, one with primary progressive aphasia (PPA), and one with the behavioral variant of PPA (bvPPA). Premorbid novel creativity emerged across different domains (visual, musical, writing), with the FTD diagnosis ensuing artistic productivity by a median of 8 years. Data on late-life and pre-dementia life events were available in four cases. The late creative phase in our case was accompanied by personality changes, accentuation of personality traits, and cessation of painting activities occurred with the onset of memory complaints. Thus, premorbid personality changes in FTD patients can be associated with de novo creative activity. Stressful life events may also contribute to the burgeoning of creativity. Moreover, primary neocortical areas that are largely spared by pathology at early FTD stages may facilitate the engagement in artistic activities, offering a window of opportunity for art therapy and other therapeutic interventions during the MBI stage or even earlier.
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Affiliation(s)
- Felix Geser
- Department of Geriatric Psychiatry, Klinikum Christophsbad, Faurndauer Str. 6-28, 73035, Göppingen, Germany.
| | - Tibor C G Mitrovics
- Department of Radiology and Neuroradiology, Klinikum Christophsbad, Göppingen, Germany
| | - Johannes Haybaeck
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria.,Diagnostic & Research Center for Molecular Biomedicine, Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Deniz Yilmazer-Hanke
- Clinical Neuroanatomy, Department of Neurology, University Hospital, Ulm University, Ulm, Germany
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Jankovska N, Matej R. Molecular Pathology of ALS: What We Currently Know and What Important Information Is Still Missing. Diagnostics (Basel) 2021; 11:1365. [PMID: 34441299 DOI: 10.3390/diagnostics11081365] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/25/2021] [Accepted: 07/25/2021] [Indexed: 12/23/2022] Open
Abstract
Despite an early understanding of amyotrophic lateral sclerosis (ALS) as a disease affecting the motor system, including motoneurons in the motor cortex, brainstem, and spinal cord, today, many cases involving dementia and behavioral disorders are reported. Therefore, we currently divide ALS not only based on genetic predisposition into the most common sporadic variant (90% of cases) and the familial variant (10%), but also based on cognitive and/or behavioral symptoms, with five specific subgroups of clinical manifestation—ALS with cognitive impairment, ALS with behavioral impairment, ALS with combined cognitive and behavioral impairment, the fully developed behavioral variant of frontotemporal dementia in combination with ALS, and comorbid ALS and Alzheimer’s disease (AD). Generally, these cases are referred to as amyotrophic lateral sclerosis-frontotemporal spectrum disorder (ALS-FTSD). Clinical behaviors and the presence of the same pathognomonic deposits suggest that FTLD and ALS could be a continuum of one entity. This review was designed primarily to compare neuropathological findings in different types of ALS relative to their characteristic locations as well as the immunoreactivity of the inclusions, and thus, foster a better understanding of the immunoreactivity, distribution, and morphology of the pathological deposits in relation to genetic mutations, which can be useful in specifying the final diagnosis.
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Asadi MR, Sadat Moslehian M, Sabaie H, Jalaiei A, Ghafouri-Fard S, Taheri M, Rezazadeh M. Stress Granules and Neurodegenerative Disorders: A Scoping Review. Front Aging Neurosci 2021; 13:650740. [PMID: 34248597 PMCID: PMC8261063 DOI: 10.3389/fnagi.2021.650740] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 05/17/2021] [Indexed: 12/13/2022] Open
Abstract
Cytoplasmic ribonucleoproteins called stress granules (SGs) are considered as one of the main cellular solutions against stress. Their temporary presence ends with stress relief. Any factor such as chronic stress or mutations in the structure of the components of SGs that lead to their permanent presence can affect their interactions with pathological aggregations and increase the degenerative effects. SGs involved in RNA mechanisms are important factors in the pathophysiology of neurodegenerative disorders such as amyotrophic lateral sclerosis (ALS), frontotemporal degeneration (FTD), and Alzheimer's diseases (AD). Although many studies have been performed in the field of SGs and neurodegenerative disorders, so far, no systematic studies have been executed in this field. The purpose of this study is to provide a comprehensive perspective of all studies about the role of SGs in the pathogenesis of neurodegenerative disorders with a focus on the protein ingredients of these granules. This scoping review is based on a six-stage methodology structure and the PRISMA guideline. A systematic search of seven databases for qualified articles was conducted until December 2020. Publications were screened independently by two reviewers and quantitative and qualitative analysis was performed on the extracted data. Bioinformatics analysis was used to plot the network and predict interprotein interactions. In addition, GO analysis was performed. A total of 48 articles were identified that comply the inclusion criteria. Most studies on neurodegenerative diseases have been conducted on ALS, AD, and FTD using human post mortem tissues. Human derived cell line studies have been used only in ALS. A total 29 genes of protein components of SGs have been studied, the most important of which are TDP-43, TIA-1, PABP-1. Bioinformatics studies have predicted 15 proteins to interact with the protein components of SGs, which may be the constituents of SGs. Understanding the interactions between SGs and pathological aggregations in neurodegenerative diseases can provide new targets for treatment of these disorders.
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Affiliation(s)
- Mohammad Reza Asadi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Marziyeh Sadat Moslehian
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hani Sabaie
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abbas Jalaiei
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Rezazadeh
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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22
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Abstract
Further understanding of older age bipolar disorder (OABD) may lead to more specific recommendations for treatment adjusted to the specific characteristics and needs caused by age-related somatic and cognitive changes. Late-onset mania has a broad differential diagnosis and requires full psychiatric and somatic work-up, including brain imaging. Research on pharmacotherapy in OABD is limited. First-line treatment of OABD is similar to that for adult bipolar disorder (BD), with specific attention to vulnerability to side effects and somatic comorbidity. Because findings in younger adults with BD cannot be extrapolated to OABD, more research in OABD is warranted.
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Affiliation(s)
- Annemiek Dols
- Department of Old Age Psychiatry, GGZinGeest and VUmc University Medical Center, Amstelveenseweg 589, 1081 JC, Amsterdam, The Netherlands; Mental Health Program, Amsterdam Public Health Research Institute, Van der Boechorstsstraat 7, 1081 BT, Amsterdam, The Netherlands; Mood, Anxiety and Psychosis Program, Amsterdam Neuroscience, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands.
| | - Aartjan Beekman
- Department of Old Age Psychiatry, GGZinGeest and VUmc University Medical Center, Amstelveenseweg 589, 1081 JC, Amsterdam, The Netherlands; Mental Health Program, Amsterdam Public Health Research Institute, Van der Boechorstsstraat 7, 1081 BT, Amsterdam, The Netherlands; Mood, Anxiety and Psychosis Program, Amsterdam Neuroscience, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands; Department of Psychiatry, GGZinGeest and VUmc University Medical Center, Amstelveenseweg 589, 1081 JC, Amsterdam, The Netherlands
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23
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Fieldhouse JLP, Gossink FT, Feenstra TC, de Boer SCM, Lemstra AW, Prins ND, Bouwman F, Koene T, Rhodius-Meester HFM, Gillissen F, Teunissen CE, van der Flier WM, Scheltens P, Dols A, Vijverberg EGB, Pijnenburg YAL. Clinical Phenotypes of Behavioral Variant Frontotemporal Dementia by Age at Onset. J Alzheimers Dis 2021; 82:381-390. [PMID: 34024833 PMCID: PMC8293634 DOI: 10.3233/jad-210179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: Behavioral variant frontotemporal dementia (bvFTD) is generally considered a young-onset dementia, although age at onset is highly variable. While several studies indicate clinical differences regarding age at onset, no biomarker validated cohort studies with updated clinical criteria have been performed. Objective: We aimed to examine behavior, cognition, and mortality over the full age spectrum in a cohort of bvFTD patients with neuroimaging, genetic, or histopathological confirmation and exclusion of positive Alzheimer’s disease biomarkers or severe cerebrovascular damage. Methods: In total, 315 patients with a clinical diagnosis of probable or definite bvFTD were included from the Amsterdam Dementia Cohort and grouped into quartiles by age-at-diagnosis. Neuropsychiatric symptoms and cognitive functioning were assessed with the neuropsychiatric inventory, the geriatric depression scale and a neuropsychological test battery. Data on mortality was obtained from the Dutch municipal register. Associations between age-at-diagnosis and clinical features and mortality risk were examined. Results: Age-at-diagnosis ranged from 26 to 85 years and established quartiles with mean ages of 52±6, 61±2, 66±2, and 74±3 years. In the total sample, 44.4%exceeded an age of 65 years at time of diagnosis. Earlier age-at-diagnosis was associated with more severe behavioral symptoms, while later age-at-diagnosis was associated with more severe memory impairment. Unexpectedly, mortality risk was not associated with age-at-diagnosis. Conclusion: In bvFTD, symptom profile is associated with age-at-diagnosis. This should be taken into account with regard to diagnostics, patient management, and trial design. Additionally, based on our sample, the prevalence of late-onset bvFTD is higher than generally thought.
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Affiliation(s)
- Jay L P Fieldhouse
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Flora T Gossink
- GGZ inGeest, Department of Old Age Psychiatry, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.,Reinier van Arkel, Geriatric and Hospital Psychiatric Centre (COZ), Jeroen Bosch Hospital, Den Bosch, The Netherlands
| | | | - Sterre C M de Boer
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Afina W Lemstra
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Niels D Prins
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.,Brain Research Center, Amsterdam, The Netherlands
| | - Femke Bouwman
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Ted Koene
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Hanneke F M Rhodius-Meester
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.,Department of Internal medicine, Geriatric Medicine section, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Freek Gillissen
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Charlotte E Teunissen
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.,Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Wiesje M van der Flier
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Philip Scheltens
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Annemieke Dols
- GGZ inGeest, Department of Old Age Psychiatry, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Everard G B Vijverberg
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.,Brain Research Center, Amsterdam, The Netherlands
| | - Yolande A L Pijnenburg
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
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24
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van der Ende EL, Jackson JL, White A, Seelaar H, van Blitterswijk M, Van Swieten JC. Unravelling the clinical spectrum and the role of repeat length in C9ORF72 repeat expansions. J Neurol Neurosurg Psychiatry 2021; 92:502-509. [PMID: 33452054 PMCID: PMC8053328 DOI: 10.1136/jnnp-2020-325377] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/16/2020] [Accepted: 12/23/2020] [Indexed: 12/13/2022]
Abstract
Since the discovery of the C9orf72 repeat expansion as the most common genetic cause of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis, it has increasingly been associated with a wider spectrum of phenotypes, including other types of dementia, movement disorders, psychiatric symptoms and slowly progressive FTD. Prompt recognition of patients with C9orf72-associated diseases is essential in light of upcoming clinical trials. The striking clinical heterogeneity associated with C9orf72 repeat expansions remains largely unexplained. In contrast to other repeat expansion disorders, evidence for an effect of repeat length on phenotype is inconclusive. Patients with C9orf72-associated diseases typically have very long repeat expansions, containing hundreds to thousands of GGGGCC-repeats, but smaller expansions might also have clinical significance. The exact threshold at which repeat expansions lead to neurodegeneration is unknown, and discordant cut-offs between laboratories pose a challenge for genetic counselling. Accurate and large-scale measurement of repeat expansions has been severely hindered by technical difficulties in sizing long expansions and by variable repeat lengths across and within tissues. Novel long-read sequencing approaches have produced promising results and open up avenues to further investigate this enthralling repeat expansion, elucidating whether its length, purity, and methylation pattern might modulate clinical features of C9orf72-related diseases.
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Affiliation(s)
- Emma L van der Ende
- Department of Neurology and Alzheimer Center, Erasmus University Medical Center, Rotterdam, Netherlands
| | | | - Adrianna White
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA.,Department of Biology, University of North Florida, Jacksonville, Florida, USA
| | - Harro Seelaar
- Department of Neurology and Alzheimer Center, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Marka van Blitterswijk
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA.,Department of Biology, University of North Florida, Jacksonville, Florida, USA
| | - John C Van Swieten
- Department of Neurology and Alzheimer Center, Erasmus University Medical Center, Rotterdam, Netherlands
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25
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Abstract
OBJECTIVES The relatively recent identification of a subgroup of patients with apparent behavioral variant frontotemporal dementia (bvFTD) that fails to progress with time has led to a reevaluation of our understanding of bvFTD, and a growing body of research that attempts to characterize the mimic or "phenocopy" syndrome. In this article, we review the literature relating to the phenocopy syndrome, focusing in particular on distinguishing characteristics and potential etiologies. METHODS Published articles were identified via a systematic search of PubMed and Embase. Observational and interventional studies, case reports, and case series were sought for inclusion. RESULTS While bvFTD and the phenocopy syndrome are clinically indistinguishable at initial presentation, the presence or absence of characteristic changes on neuroimaging predicts 2 very different illness trajectories. The etiology for the phenocopy presentation remains uncertain. It is likely that the syndrome represents a heterogenous assortment of clinical frontal syndromes encompassing atypical neurodegenerative, psychiatric, psychological, and as yet unknown neuropsychiatric causes. CONCLUSIONS Although the prognosis of the phenocopy syndrome is generally held to be more favorable than that of bvFTD, patients and families are subject to major disruption in their relationships and social and occupational functioning. Early recognition is crucial to facilitate timely interventions aimed at maintaining relationships, roles, and quality of life of those affected.
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Affiliation(s)
- Clodagh Power
- Mercer's Institute for Successful Ageing, 58024St James's Hospital, Dublin, Ireland
| | - Brian A Lawlor
- Mercer's Institute for Successful Ageing, 58024St James's Hospital, Dublin, Ireland
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26
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Davy V, Dumurgier J, Fayosse A, Paquet C, Cognat E. Neurofilaments as Emerging Biomarkers of Neuroaxonal Damage to Differentiate Behavioral Frontotemporal Dementia from Primary Psychiatric Disorders: A Systematic Review. Diagnostics (Basel) 2021; 11:754. [PMID: 33922390 DOI: 10.3390/diagnostics11050754] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 11/21/2022] Open
Abstract
The behavioral variant of frontotemporal dementia (bvFTD) is a clinical syndrome resulting from various causes of neuronal demises associated with frontotemporal lobar degeneration. Symptoms include behavioral and personality changes, social cognitive impairment, and executive function deficits. There is a significant clinical overlap between this syndrome and various primary psychiatric disorders (PPD). Structural and functional neuroimaging are considered helpful to support the diagnosis of bvFTD, but their sensitivity and specificity remain imperfect. There is growing evidence concerning the potential of neurofilaments as biomarkers reflecting axonal and neuronal lesions. Ultrasensitive analytic platforms have recently enabled neurofilament light chains’ (NfL) detection not only from cerebrospinal fluid but also from peripheral blood samples in FTD patients. In this short review, we present recent advances and perspectives for the use of NfL assessments as biomarkers of neuroaxonal damage to differentiate bvFTD from primary psychiatric disorders.
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27
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van Engelen MPE, Rozemuller AJM, Ulugut Erkoyun H, Groot C, Fieldhouse JLP, Koene T, Ossenkoppele R, Gossink FT, Krudop WA, Vijverberg EGB, Dols A, Barkhof F, Berckel BNMV, Scheltens P, Brain Bank N, Pijnenburg YAL. The bvFTD phenocopy syndrome: a case study supported by repeated MRI, [ 18F]FDG-PET and pathological assessment. Neurocase 2021; 27:181-189. [PMID: 33881963 DOI: 10.1080/13554794.2021.1905855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A clinical syndrome with neuropsychiatric features of bvFTD without neuroimaging abnormalities and a lack of decline is a phenocopy of bvFTD (phFTD). Growing evidence suggests that psychological, psychiatric and environmental factors underlie phFTD. We describe a patient diagnosed with bvFTD prior to the revision of the diagnostic guidelines of FTD. Repeated neuroimaging was normal and there was no FTD pathology at autopsy, rejecting the diagnosis. We hypothesize on etiological factors that on hindsight might have played a role. This case report contributes to the understanding of phFTD and adds to the sparse literature of the postmortem assessment of phFTD.
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Affiliation(s)
- Marie-Paule E van Engelen
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Annemieke J M Rozemuller
- Department of Pathology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Hülya Ulugut Erkoyun
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Colin Groot
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Jay L P Fieldhouse
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Ted Koene
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Rik Ossenkoppele
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Lund University, Clinical Memory Research Unit, Lund, Sweden
| | - Flora T Gossink
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Old Age Psychiatry, Amsterdam, The Netherlands
| | - Welmoed A Krudop
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Old Age Psychiatry, Amsterdam, The Netherlands.,Department of Psychiatry, Universitair Medisch Centrum Utrecht, Utrecht, The Netherlands
| | - Everard G B Vijverberg
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Annemieke Dols
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Old Age Psychiatry, Amsterdam, The Netherlands
| | - Frederik Barkhof
- Department of Radiology & Nuclear Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands.,Institutes of Neurology and Healthcare Engineering, University College London, London, England, UK
| | - Bart N M Van Berckel
- Department of Radiology & Nuclear Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands
| | - Philip Scheltens
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | | | - Yolande A L Pijnenburg
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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28
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Hokelekli FO, Whitwell JL, Machulda MM, Jones DT, Uitti RJ, Pham NTT, Giannini C, Baker M, Lowe VJ, Dickson DW, Josephs KA. Underlying pathology identified after 20 years of disease course in two cases of slowly progressive frontotemporal dementia syndromes. Neurocase 2021; 27:212-222. [PMID: 33904372 PMCID: PMC8189252 DOI: 10.1080/13554794.2021.1918723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Abstract
We report two cases from the frontotemporal lobar degeneration (FTLD) spectrum with remarkably slow progression. The first case demonstrated insidious-onset behavioral symptoms and personality changes resembling behavioral variant of frontotemporal dementia, followed a benign course over 26 years, his brain autopsy revealed the diffuse form of argyrophilic grain disease. The second case presented with slowly progressive cognitive and motor deficits, reminiscent of the corticobasal syndrome, deteriorated slowly over 22 years, his brain autopsy revealed FTLD-TDP with C9ORF72 pathology. These two cases confirm the notion of slowly progressive frontotemporal lobar degeneration caused by an underlying FTLD pathology, rather than a phenocopy.
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Affiliation(s)
| | | | - Mary M Machulda
- Departments of Psychiatry and Psychology, Mayo Clinic Rochester, Minnesota, USA
| | - David T Jones
- Departments of Neurology, Mayo Clinic Rochester, Minnesota, USA
| | - Ryan J Uitti
- Departments of Neurology, Mayo Clinic Rochester, Minnesota, USA
| | | | | | - Matthew Baker
- Departments of Neuroscience, Mayo Clinic Rochester, Florida, US
| | - Val J Lowe
- Departments of Neurology, Mayo Clinic Rochester, Minnesota, USA
| | | | - Keith A Josephs
- Departments of Neurology, Mayo Clinic Rochester, Minnesota, USA
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29
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Bastin C, Bahri MA, Bernard C, Hustinx R, Salmon E. Frontal hypometabolism in neurocognitive disorder with behavioral disturbance. J Nucl Med 2021; 62:jnumed.120.260497. [PMID: 33789936 PMCID: PMC8612193 DOI: 10.2967/jnumed.120.260497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 03/18/2021] [Accepted: 03/18/2021] [Indexed: 11/16/2022] Open
Abstract
Criteria for the behavioral variant of frontotemporal dementia (bvFTD) include decreased frontal metabolism. FDG-PET was used to investigate whether patients with neurocognitive disorder and behavioral disturbance (bvNCD) who did not fulfill three bvFTD criteria had characteristic brain metabolic pattern. Methods: Patients were referred from memory clinic to nuclear medicine for differential diagnosis of NCD with dysexecutive syndrome and predominant mild frontal atrophy. Patients were classified into two groups before FDG-PET, probable bvFTD (n = 25) or bvNCD (n = 27) when only two bvFTD criteria were met. Results: Voxel-based and multivariate PLS analyses of FDG-PET did not show significant between-group difference at inclusion. After 4.8 years of follow-up, most patients with probable bvFTD received the same diagnosis, 3 remained very stable and one participant was given a psychiatric diagnosis. Five patients with bvNCD fulfilled criteria for probable bvFTD at 4.4 years mean follow up, while 2 participants remained very stable and 3 received alternative neurological or psychiatric diagnoses. When initial FDG-PET were compared between groups stratified at follow up (26 bvFTD versus 17 bvNCD), there was a trend (p<.001uncorrected) for lower prefrontal with relatively preserved premotor metabolism in bvFTD compared to bvNCD. Twelve bvNCD participants had neuropsychological testing before inclusion. They all presented executive dysfunction and normal visuospatial performance, and most (n = 9) had memory encoding impairment. Conclusion: Frontal hypometabolism was observed in a dysexecutive presentation of frontal neurodegenerative disorder (bvNCD) that did not fulfill all clinical criteria for bvFTD.
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Affiliation(s)
- Christine Bastin
- GIGA Cyclotron Research Centre, University of Liege, Liege, Belgium
| | | | - Claire Bernard
- Nuclear Medicine Department, CHU Liege, Liege, Belgium; and
| | - Roland Hustinx
- GIGA Cyclotron Research Centre, University of Liege, Liege, Belgium
- Nuclear Medicine Department, CHU Liege, Liege, Belgium; and
| | - Eric Salmon
- GIGA Cyclotron Research Centre, University of Liege, Liege, Belgium
- Memory Clinic, Department of Neurology, CHU Liege, Liege, Belgium
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30
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Illán-Gala I, Falgàs N, Friedberg A, Castro-Suárez S, Keret O, Rogers N, Oz D, Nigro S, Quattrone A, Quattrone A, Wolf A, Younes K, Santos-Santos M, Borrego-Écija S, Cobigo Y, Dols-Icardo O, Lladó A, Sánchez-Valle R, Clarimon J, Blesa R, Alcolea D, Fortea J, Lleó A, Grinberg LT, Spina S, Kramer JH, Rabinovici GD, Boxer A, Gorno Tempini ML, Miller BL, Seeley WW, Rosen HJ, Perry DC. Diagnostic Utility of Measuring Cerebral Atrophy in the Behavioral Variant of Frontotemporal Dementia and Association With Clinical Deterioration. JAMA Netw Open 2021; 4:e211290. [PMID: 33704477 PMCID: PMC7953307 DOI: 10.1001/jamanetworkopen.2021.1290] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
IMPORTANCE The presence of atrophy on magnetic resonance imaging can support the diagnosis of the behavioral variant of frontotemporal dementia (bvFTD), but reproducible measurements are lacking. OBJECTIVE To assess the diagnostic and prognostic utility of 6 visual atrophy scales (VAS) and the Magnetic Resonance Parkinsonism Index (MRPI). DESIGN, SETTING, AND PARTICIPANTS In this diagnostic/prognostic study, data from 235 patients with bvFTD and 225 age- and magnetic resonance imaging-matched control individuals from 3 centers were collected from December 1, 1998, to September 30, 2019. One hundred twenty-one participants with bvFTD had high confidence of frontotemporal lobar degeneration (FTLD) (bvFTD-HC), and 19 had low confidence of FTLD (bvFTD-LC). Blinded clinicians applied 6 previously validated VAS, and the MRPI was calculated with a fully automated approach. Cortical thickness and subcortical volumes were also measured for comparison. Data were analyzed from February 1 to June 30, 2020. MAIN OUTCOMES AND MEASURES The main outcomes of this study were bvFTD-HC or a neuropathological diagnosis of 4-repeat (4R) tauopathy and the clinical deterioration rate (assessed by longitudinal measurements of Clinical Dementia Rating Sum of Boxes). Measures of cerebral atrophy included VAS scores, the bvFTD atrophy score (sum of VAS scores in orbitofrontal, anterior cingulate, anterior temporal, medial temporal lobe, and frontal insula regions), the MRPI, and other computerized quantifications of cortical and subcortical volumes. The areas under the receiver operating characteristic curve (AUROC) were calculated for the differentiation of participants with bvFTD-HC and bvFTD-LC and controls. Linear mixed models were used to evaluate the ability of atrophy measures to estimate longitudinal clinical deterioration. RESULTS Of the 460 included participants, 296 (64.3%) were men, and the mean (SD) age was 62.6 (11.4) years. The accuracy of the bvFTD atrophy score for the differentiation of bvFTD-HC from controls (AUROC, 0.930; 95% CI, 0.903-0.957) and bvFTD-HC from bvFTD-LC (AUROC, 0.880; 95% CI, 0.787-0.972) was comparable to computerized measures (AUROC, 0.973 [95% CI, 0.954-0.993] and 0.898 [95% CI, 0.834-0.962], respectively). The MRPI was increased in patients with bvFTD and underlying 4R tauopathies compared with other FTLD subtypes (14.1 [2.0] vs 11.2 [2.6] points; P < .001). Higher bvFTD atrophy scores were associated with faster clinical deterioration in bvFTD (1.86-point change in Clinical Dementia Rating Sum of Boxes score per bvFTD atrophy score increase per year; 95% CI, 0.99-2.73; P < .001). CONCLUSIONS AND RELEVANCE Based on these study findings, in bvFTD, VAS increased the diagnostic certainty of underlying FTLD, and the MRPI showed potential for the detection of participants with underlying 4R tauopathies. These widely available measures of atrophy can also be useful to estimate longitudinal clinical deterioration.
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Affiliation(s)
- Ignacio Illán-Gala
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
- Atlantic Fellow for Equity in Brain Health, Department of Neurology, University of California, San Francisco
| | - Neus Falgàs
- Atlantic Fellow for Equity in Brain Health, Department of Neurology, University of California, San Francisco
- Alzheimer’s Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Institut d’Investigació Biomèdica August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - Adit Friedberg
- Atlantic Fellow for Equity in Brain Health, Department of Neurology, University of California, San Francisco
| | - Sheila Castro-Suárez
- Atlantic Fellow for Equity in Brain Health, Department of Neurology, University of California, San Francisco
| | - Ophir Keret
- Atlantic Fellow for Equity in Brain Health, Department of Neurology, University of California, San Francisco
| | - Nicole Rogers
- Atlantic Fellow for Equity in Brain Health, Department of Neurology, University of California, San Francisco
| | - Didem Oz
- Atlantic Fellow for Equity in Brain Health, Department of Neurology, University of California, San Francisco
| | - Salvatore Nigro
- Neuroscience Centre, Magna Graecia University, Catanzaro, Italy
| | - Andrea Quattrone
- Department of Medical and Surgical Sciences, Institute of Neurology, Magna Graecia University, Catanzaro, Italy
| | - Aldo Quattrone
- Neuroscience Centre, Magna Graecia University, Catanzaro, Italy
- Neuroimaging Research Unit, Institute of Molecular Bioimaging and Physiology, National Research Council, Catanzaro, Italy
| | - Amy Wolf
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Kyan Younes
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Miguel Santos-Santos
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Sergi Borrego-Écija
- Alzheimer’s Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Institut d’Investigació Biomèdica August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - Yann Cobigo
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Oriol Dols-Icardo
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Albert Lladó
- Alzheimer’s Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Institut d’Investigació Biomèdica August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - Raquel Sánchez-Valle
- Alzheimer’s Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Institut d’Investigació Biomèdica August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - Jordi Clarimon
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Rafael Blesa
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Daniel Alcolea
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Juan Fortea
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Alberto Lleó
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Lea T. Grinberg
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Salvatore Spina
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Joel H. Kramer
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Gil D. Rabinovici
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Adam Boxer
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | | | - Bruce L. Miller
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - William W. Seeley
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - Howard J. Rosen
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
| | - David C. Perry
- Memory and Aging Center, Department of Neurology, University of California, San Francisco
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Li Hi Shing S, McKenna MC, Siah WF, Chipika RH, Hardiman O, Bede P. The imaging signature of C9orf72 hexanucleotide repeat expansions: implications for clinical trials and therapy development. Brain Imaging Behav 2021; 15:2693-2719. [PMID: 33398779 DOI: 10.1007/s11682-020-00429-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2020] [Indexed: 01/14/2023]
Abstract
While C9orf72-specific imaging signatures have been proposed by both ALS and FTD research groups and considerable presymptomatic alterations have also been confirmed in young mutation carriers, considerable inconsistencies exist in the literature. Accordingly, a systematic review of C9orf72-imaging studies has been performed to identify consensus findings, stereotyped shortcomings, and unique contributions to outline future directions. A formal literature review was conducted according to the STROBE guidelines. All identified papers were individually reviewed for sample size, choice of controls, study design, imaging modalities, statistical models, clinical profiling, and identified genotype-associated pathological patterns. A total of 74 imaging papers were systematically reviewed. ALS patients with GGGGCC repeat expansions exhibit relatively limited motor cortex involvement and widespread extra-motor pathology. C9orf72 positive FTD patients often show preferential posterior involvement. Reports of thalamic involvement are relatively consistent across the various phenotypes. Asymptomatic hexanucleotide repeat carriers often exhibit structural and functional changes decades prior to symptom onset. Common shortcomings included sample size limitations, lack of disease-controls, limited clinical profiling, lack of genetic testing in healthy controls, and absence of post mortem validation. There is a striking paucity of longitudinal studies and existing presymptomatic studies have not evaluated the predictive value of radiological changes with regard to age of onset and phenoconversion. With the advent of antisense oligonucleotide therapies, the meticulous characterisation of C9orf72-associated changes has gained practical relevance. Neuroimaging offers non-invasive biomarkers for future clinical trials, presymptomatic ascertainment, diagnostic and prognostic applications.
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Affiliation(s)
- Stacey Li Hi Shing
- Computational Neuroimaging Group, Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Mary Clare McKenna
- Computational Neuroimaging Group, Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - We Fong Siah
- Computational Neuroimaging Group, Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Rangariroyashe H Chipika
- Computational Neuroimaging Group, Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Orla Hardiman
- Computational Neuroimaging Group, Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Peter Bede
- Computational Neuroimaging Group, Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
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Caso F, Agosta F, Magnani G, Cardamone R, Borghesani V, Miller Z, Riva N, La Joie R, Coppola G, Grinberg LT, Seeley WW, Miller BL, Gorno-Tempini ML, Filippi M. Temporal variant of frontotemporal dementia in C9orf72 repeat expansion carriers: two case studies. Brain Imaging Behav 2021; 14:336-345. [PMID: 32180125 DOI: 10.1007/s11682-019-00253-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The temporal variant of frontotemporal dementia (tv-FTD) is a progressive neurodegenerative disease with a complex clinical picture mainly characterized by behavioral and language disorders. In this work, we describe clinical, genetic, neuroanatomical and neuropathological (only in one case) features of two patients with tv-FTD carrying C9orf72 repeat expansion. The first patient (AB) presented with a 1-year disease duration showing focal right anterior temporal lobe (ATL) atrophy on magnetic resonance imaging (MRI). The second patient (BC) came to medical attention 13 years after disease onset and showed a prominent bilateral ATL involvement. Both patients showed naming deficits, impairment in identifying known faces and proper names, and personality changes with new onset behavioral rigidity, and progressing language difficulties to single-word and sentence comprehension difficulties. They were classified as tv-FTD. Clinical, cognitive and MRI follow-up were performed. As cognitive impairment progressed, MRI atrophy worsened in ATL and frontotemporal areas in both patients. Both cases had clear family histories of neurological and/or psychiatric disease. Genetic testing revealed a C9orf72 hexanucleotide repeat expansion in both cases. BC passed away after 15 years of disease and autopsy showed the expected TDP-type B pathology. These genetic cases of tv-FTD highlight the susceptibility of ATL to C9orf72-related pathology and emphasize the importance of genetical testing in FTD-spectrum disorders, regardless of the clinical phenotype.
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Affiliation(s)
- Francesca Caso
- Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, IRCCS Ospedale San Raffaele, Via Olgettina, 60, 20132, Milan, Italy.,Neurology Unit, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Federica Agosta
- Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, IRCCS Ospedale San Raffaele, Via Olgettina, 60, 20132, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | | | | | | | - Zachary Miller
- Memory and Aging Center, University of California, San Francisco, CA, USA
| | - Nilo Riva
- Neuropathology Unit, Institute of Experimental Neurology, Division of Neuroscience, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Renaud La Joie
- Memory and Aging Center, University of California, San Francisco, CA, USA
| | - Giovanni Coppola
- Department of Psychiatry, Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA, USA.,Department of Neurology, University of California Los Angeles, Los Angeles, CA, USA
| | - Lea T Grinberg
- Memory and Aging Center, University of California, San Francisco, CA, USA
| | - William W Seeley
- Memory and Aging Center, University of California, San Francisco, CA, USA
| | - Bruce L Miller
- Memory and Aging Center, University of California, San Francisco, CA, USA
| | | | - Massimo Filippi
- Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, IRCCS Ospedale San Raffaele, Via Olgettina, 60, 20132, Milan, Italy. .,Neurology Unit, IRCCS Ospedale San Raffaele, Milan, Italy. .,Vita-Salute San Raffaele University, Milan, Italy. .,Neurophysiology Unit, IRCCS Ospedale San Raffaele, Milan, Italy.
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Duignan JA, Haughey A, Kinsella JA, Killeen RP. Molecular and Anatomical Imaging of Dementia With Lewy Bodies and Frontotemporal Lobar Degeneration. Semin Nucl Med 2021; 51:264-274. [PMID: 33402272 DOI: 10.1053/j.semnuclmed.2020.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Dementia with Lewy bodies (DLB) and frontotemporal lobar degeneration (FTLD) are common causes of dementia. Early diagnosis of both conditions is challenging due to clinical and radiological overlap with other forms of dementia, particularly Alzheimer's disease (AD). Structural and functional imaging combined can aid differential diagnosis and help to discriminate DLB or FTLD from other forms of dementia. Imaging of DLB involves the use of 123I-FP-CIT SPECT and 123I-metaiodobenzylguanidine (123I-MIBG), both of which have an established role distinguishing DLB from AD. AD is also characterised by more pronounced atrophy of the medial temporal lobe structures when compared to DLB and these can be assessed at MR using the Medial Temporal Atrophy Scale. 18F-FDG-PET is used as a supportive biomarker for the diagnoses of DLB and can distinguish DLB from AD with high accuracy. Polysomnography and electroencephalography also have established roles in the diagnoses of DLB. FTLD is a heterogenous group of neurodegenerative disorders characterised pathologically by abnormally aggregated proteins. Clinical subtypes include behavioral variant FTD (bvFTD), primary progressive aphasia (PPA), which can be subdivided into semantic variant PPA (svPPA) or nonfluent agrammatic PPA (nfaPPA) and FTD associated with motor neuron disease (FTD-MND). Structural imaging is often the first step in making an image supported diagnoses of FTLD. Regional patterns of atrophy can be assessed on MR and graded according to the global cortical atrophy scale. FTLD is typically associated with atrophy of the frontal and temporal lobes. The patterns of atrophy are associated with the specific clinical subtypes, underlying neuropathology and genetic mutations although there is significant overlap. 18F-FDG-PET is useful for distinguishing FTLD from other forms of dementia and focal areas of hypometabolism can often precede atrophy identified on structural MR imaging. There are currently no biomarkers with which to unambiguously diagnose DLB or FTLD and both conditions demonstrate a wide range of heterogeneity. A combined approach of structural and functional imaging improves diagnostic accuracy in both conditions.
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Affiliation(s)
- John A Duignan
- Department of Radiology, St Vincent's University Hospital, Dublin 4, Ireland; UCD - SVUH PET CT Research Centre, St Vincent's University Hospital, Dublin 4, Ireland
| | - Aoife Haughey
- Department of Radiology, St Vincent's University Hospital, Dublin 4, Ireland; UCD - SVUH PET CT Research Centre, St Vincent's University Hospital, Dublin 4, Ireland
| | - Justin A Kinsella
- Department of Neurology, St Vincent's University Hospital, UCD, Dublin 4, Ireland
| | - Ronan P Killeen
- Department of Radiology, St Vincent's University Hospital, Dublin 4, Ireland; UCD - SVUH PET CT Research Centre, St Vincent's University Hospital, Dublin 4, Ireland.
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Mentis AFA, Bougea AM, Chrousos GP. Amyotrophic lateral sclerosis (ALS) and the endocrine system: Are there any further ties to be explored? Aging Brain 2021; 1:100024. [PMID: 36911507 PMCID: PMC9997134 DOI: 10.1016/j.nbas.2021.100024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/20/2021] [Accepted: 10/13/2021] [Indexed: 10/19/2022] Open
Abstract
Amyotrophic Lateral Sclerosis (ALS) belongs to the family of neurodegenerative disorders and is classified as fronto-temporal dementia (FTD), progressive muscular atrophy, primary lateral sclerosis, and pseudobulbar palsy. Even though endocrine dysfunction independently impacts the ALS-related survival rate, the complex connection between ALS and the endocrine system has not been studied in depth. Here we review earlier and recent findings on how ALS interacts with hormones a) of the hypothalamus and pituitary gland, b) the thyroid gland, c) the pancreas, d) the adipose tissue, e) the parathyroid glands, f) the bones, g) the adrenal glands, and h) the gonads (ovaries and testes). Of note, endocrine issues should always be explored in patients with ALS, especially those with low skeletal muscle and bone mass, vitamin D deficiency, and decreased insulin sensitivity (diabetes mellitus). Because ALS is a progressively deteriorating disease, addressing any potential endocrine co-morbidities in patients with this malady is quite important for decreasing the overall ALS-associated disease burden. Importantly, as this burden is estimated to increase globally in the decades to follow, in part because of an increasingly aging population, it is high time for future multi-center, multi-ethnic studies to assess the link between ALS and the endocrine system in significantly larger patient populations. Last, the psychosocial stress experienced by patients with ALS and its psycho-neuro-endocrinological sequelae, including hypothalamic-pituitaryadrenal dysregulation, should become an area of intensive study in the future.
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Affiliation(s)
- Alexios-Fotios A Mentis
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece.,UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - Anastasia M Bougea
- Memory & Movement Disorders Clinic, 1st Department of Neurology, Aeginition Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - George P Chrousos
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece.,UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
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Saracino D, Le Ber I. Clinical Update on C9orf72: Frontotemporal Dementia, Amyotrophic Lateral Sclerosis, and Beyond. Adv Exp Med Biol 2021; 1281:67-76. [PMID: 33433869 DOI: 10.1007/978-3-030-51140-1_5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The identification of C9orf72 gene has led to important scientific progresses and has considerably changed our clinical practice. However, a decade after C9orf72 discovery, some important clinical questions remain unsolved. The reliable cutoff for the pathogenic repeat number and the implication of intermediate alleles in frontotemporal dementia, amyotrophic lateral sclerosis, or in other diseases are still uncertain. The occurrence of an anticipation phenomenon - at the clinical and molecular levels - in C9orf72 kindreds is still debated as well, and the factors driving age at onset and phenotype variability are largely unknown. All these questions have a significant impact not only in clinical practice for diagnosis and genetic counseling but also in a research context for the initiation of therapeutic trials. In this chapter, we will address all those issues and summarize the recent updates about clinical aspects of C9orf72 disease, focusing on both the common and the less typical phenotypes.
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Pressman PS, Matlock D, Ducharme S. Distinguishing Behavioral Variant Frontotemporal Dementia From Primary Psychiatric Disorders: A Review of Recently Published Consensus Recommendations From the Neuropsychiatric International Consortium for Frontotemporal Dementia. J Neuropsychiatry Clin Neurosci 2021; 33:152-156. [PMID: 33441015 PMCID: PMC8916060 DOI: 10.1176/appi.neuropsych.20090238] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The behavioral variant of frontotemporal dementia (bvFTD) is the second most common cause of dementia for individuals <65 years old, but accurate diagnosis is often delayed for several years. While previous criteria have increased the ability of diagnosticians to distinguish between bvFTD and other neurocognitive disorders such as Alzheimer's disease, distinguishing bvFTD from a primary psychiatric disorder (PPD) has been more challenging. In early 2020, the Neuropsychiatric International Consortium for Frontotemporal Dementia published the first consensus recommendations to help clinicians distinguish between bvFTD and PPD. These recommendations were produced by a consortium of 45 scientists and clinicians from more than 15 different countries, who explored aspects of history taking, neuropsychological assessments, clinical scales, neuroimaging, CSF and serum biomarkers, and genetics. A multidisciplinary approach is encouraged throughout. In this article, the authors also review those consensus recommendations and highlight use of novel tests and techniques. Additionally, they indicate where further research is needed, including methods to assess the dissemination and implementation of these recommendations. In this way, future efforts by clinicians and researchers alike to improve accurate recognition of bvFTD are encouraged, thereby expanding opportunities for improved guidance and management.
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Affiliation(s)
- Peter S. Pressman
- Behavioral Neurology Section, Department of Neurology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Daniel Matlock
- Division of Geriatric Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
| | - Simon Ducharme
- Montreal Neurological Institute-Hospital, Montreal, Quebec, Canada
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37
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Maia da Silva MN, Porto FHDG, Lopes PMG, Sodré de Castro Prado C, Frota NAF, Alves CHL, Alves GS. Frontotemporal Dementia and Late-Onset Bipolar Disorder: The Many Directions of a Busy Road. Front Psychiatry 2021; 12:768722. [PMID: 34925096 PMCID: PMC8674641 DOI: 10.3389/fpsyt.2021.768722] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/13/2021] [Indexed: 12/18/2022] Open
Abstract
It is a common pathway for patients with the behavioral variant of frontotemporal dementia (bvFTD) to be first misdiagnosed with a primary psychiatric disorder, a considerable proportion of them being diagnosed with bipolar disorder (BD). Conversely, not rarely patients presenting in late life with a first episode of mania or atypically severe depression are initially considered to have dementia before the diagnosis of late-onset BD is reached. Beyond some shared features that make these conditions particularly prone to confusion, especially in the elderly, the relationship between bvFTD and BD is far from simple. Patients with BD often have cognitive complaints as part of their psychiatric disorder but are at an increased risk of developing dementia, including FTD. Likewise, apathy and disinhibition, common features of depression and mania, respectively, are among the core features of the bvFTD syndrome, not to mention that depression may coexist with dementia. In this article, we take advantage of the current knowledge on the neurobiology of these two nosologic entities to review their historical and conceptual interplay, highlighting the clinical, genetic and neuroimaging features that may be shared by both disorders or unique to each of them.
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Affiliation(s)
- Mari N Maia da Silva
- Geriatric Neuropsychiatry Outpatient Service, Nina Rodrigues Hospital, São Luís, Brazil
| | - Fábio Henrique de Gobbi Porto
- Laboratory of Psychiatric Neuroimaging (LIM-21) and Old Age Research Group (PROTER), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | | | | | - Norberto Anízio Ferreira Frota
- University of Fortaleza (UNIFOR) School of Medicine, Cognitive and Behavioral Neurology Service, Hospital Geral de Fortaleza, Fortaleza, Brazil
| | | | - Gilberto Sousa Alves
- Geriatric Neuropsychiatry Outpatient Service, Nina Rodrigues Hospital, São Luís, Brazil.,Post Graduation in Psychiatry and Mental Health, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Staffaroni AM, Goh SYM, Cobigo Y, Ong E, Lee SE, Casaletto KB, Wolf A, Forsberg LK, Ghoshal N, Graff-Radford NR, Grossman M, Heuer HW, Hsiung GYR, Kantarci K, Knopman DS, Kremers WK, Mackenzie IR, Miller BL, Pedraza O, Rascovsky K, Tartaglia MC, Wszolek ZK, Kramer JH, Kornak J, Boeve BF, Boxer AL, Rosen HJ. Rates of Brain Atrophy Across Disease Stages in Familial Frontotemporal Dementia Associated With MAPT, GRN, and C9orf72 Pathogenic Variants. JAMA Netw Open 2020; 3:e2022847. [PMID: 33112398 PMCID: PMC7593814 DOI: 10.1001/jamanetworkopen.2020.22847] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022] Open
Abstract
Importance Several clinical trials are planned for familial forms of frontotemporal lobar degeneration (f-FTLD). Precise modeling of brain atrophy in f-FTLD could improve the power to detect a treatment effect. Objective To characterize regions and rates of atrophy in the 3 primary f-FTLD genetic groups (MAPT, GRN, and C9orf72) across all disease stages from asymptomatic to dementia. Design, Setting, and Participants This investigation was a case-control study of participants enrolled in the Advancing Research and Treatment for Frontotemporal Lobar Degeneration or Longitudinal Evaluation of Familial Frontotemporal Dementia studies. The study took place at 18 North American academic medical centers between January 2009 and September 2018. Participants with f-FTLD (n = 100) with a known pathogenic variant (MAPT [n = 28], GRN [n = 33], or C9orf72 [n = 39]) were grouped according to disease stage (ie, Clinical Dementia Rating [CDR] plus National Alzheimer's Coordinating Center [NACC] FTLD module). Included were participants with at least 2 structural magnetic resonance images at presymptomatic (CDR + NACC FTLD = 0 [n = 57]), mild or questionable (CDR + NACC FTLD = 0.5 [n = 15]), or symptomatic (CDR + NACC FTLD = ≥1 [n = 28]) disease stages. The control group included family members of known pathogenic variant carriers who did not carry the pathogenic variant (n = 60). Main Outcomes and Measures This study fitted bayesian linear mixed-effects models in each voxel of the brain to quantify the rate of atrophy in each of the 3 genes, at each of the 3 disease stages, compared with controls. The study also analyzed rates of clinical decline in each of these groups, as measured by the CDR + NACC FTLD box score. Results The sample included 100 participants with f-FTLD with a known pathogenic variant (mean [SD] age, 50.48 [13.78] years; 53 [53%] female) and 60 family members of known pathogenic variant carriers who did not carry the pathogenic variant (mean [SD] age, 47.51 [12.43] years; 36 [60%] female). MAPT and GRN pathogenic variants were associated with increased rates of volume loss compared with controls at all stages of disease. In MAPT pathogenic variant carriers, statistically significant regions of accelerated volume loss compared with controls were identified in temporal regions bilaterally in the presymptomatic stage, with global spread in the symptomatic stage. For example, mean [SD] rates of atrophy in the left temporal were -231 [47] mm3 per year during the presymptomatic stage, -381 [208] mm3 per year during the mild stage, and -1485 [1025] mm3 per year during the symptomatic stage (P < .05). GRN pathogenic variant carriers generally had minimal increases in atrophy rates between the presymptomatic and mild stages, with rapid increases in atrophy rates in the symptomatic stages. For example, in the right frontal lobes, annualized volume loss was -267 [81] mm3 per year in the presymptomatic stage and -182 [90] mm3 per year in the mild stage, but -1169 [555] mm3 per year in the symptomatic stage. Compared with the other groups, C9orf72 expansion carriers showed minimal increases in rate of volume loss with disease progression. For example, the mean (SD) annualized rates of atrophy in the right frontal lobe in C9orf72 expansion carriers was -272 (118) mm3 per year in presymptomatic stages, -310 (189) mm3 per year in mildly symptomatic stages, and -251 (145) mm3 per year in symptomatic stages. Conclusions and Relevance These findings are relevant to clinical trial planning and suggest that the mechanism by which C9orf72 pathogenic variants lead to symptoms may be fundamentally different from the mechanisms associated with other pathogenic variants.
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Affiliation(s)
- Adam M. Staffaroni
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Sheng-Yang M. Goh
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Yann Cobigo
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Elise Ong
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Suzee E. Lee
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Kaitlin B. Casaletto
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Amy Wolf
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Leah K. Forsberg
- Department of Neurology, College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Nupur Ghoshal
- Department of Neurology, Washington University School of Medicine in St Louis, St Louis, Missouri
- Department of Psychiatry, Washington University School of Medicine in St Louis, St Louis, Missouri
| | | | - Murray Grossman
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Hilary W. Heuer
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Ging-Yuek R. Hsiung
- Division of Neurology, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kejal Kantarci
- Department of Radiology, College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - David S. Knopman
- Department of Neurology, College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Walter K. Kremers
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota
| | - Ian R. Mackenzie
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Bruce L. Miller
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Otto Pedraza
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, Florida
| | - Katya Rascovsky
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - M. Carmela Tartaglia
- Division of Neurology, Department of Medicine, Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Ontario, Canada
| | | | - Joel H. Kramer
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - John Kornak
- Department of Epidemiology and Biostatistics, Memory and Aging Center, University of California, San Francisco
| | - Bradley F. Boeve
- Department of Neurology, College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Adam L. Boxer
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
| | - Howard J. Rosen
- Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco
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Tan RH, Yang Y, McCann H, Shepherd C, Halliday GM. Von Economo Neurons in Behavioral Variant Frontotemporal Dementia with Underlying Alzheimer's Disease. J Alzheimers Dis 2020; 69:963-967. [PMID: 31104018 DOI: 10.3233/jad-180900] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The selective loss of von Economo neurons has been linked to the behavioral deficits in behavioral variant frontotemporal dementia (bvFTD) but whether these neurons are affected in bvFTD patients with underlying Alzheimer's disease (AD) has yet to be established. The present study assesses the von Economo neurons in pathological AD cases clinically diagnosed with either AD or bvFTD. Our results demonstrate no significant loss of von Economo neurons in all pathological AD cases, irrespective of clinical diagnosis or co-existing Lewy body pathology. These results suggest that the behavioral deficits in patients with clinical bvFTD and underlying pathological AD are not driven by the loss of von Economo neurons.
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Affiliation(s)
- Rachel H Tan
- The University of Sydney, Brain and Mind Centre and Central Clinical School, Faculty of Medicine and Health, Australia.,School of Medical Sciences, University of New South Wales, and Neuroscience Research Australia, Sydney, Australia
| | - Yue Yang
- The University of Sydney, Brain and Mind Centre and Central Clinical School, Faculty of Medicine and Health, Australia
| | - Heather McCann
- School of Medical Sciences, University of New South Wales, and Neuroscience Research Australia, Sydney, Australia
| | - Claire Shepherd
- School of Medical Sciences, University of New South Wales, and Neuroscience Research Australia, Sydney, Australia
| | - Glenda M Halliday
- The University of Sydney, Brain and Mind Centre and Central Clinical School, Faculty of Medicine and Health, Australia.,School of Medical Sciences, University of New South Wales, and Neuroscience Research Australia, Sydney, Australia
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Häkkinen S, Chu SA, Lee SE. Neuroimaging in genetic frontotemporal dementia and amyotrophic lateral sclerosis. Neurobiol Dis 2020; 145:105063. [PMID: 32890771 DOI: 10.1016/j.nbd.2020.105063] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/30/2020] [Accepted: 08/26/2020] [Indexed: 02/06/2023] Open
Abstract
Frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) have a strong clinical, genetic and pathological overlap. This review focuses on the current understanding of structural, functional and molecular neuroimaging signatures of genetic FTD and ALS. We overview quantitative neuroimaging studies on the most common genes associated with FTD (MAPT, GRN), ALS (SOD1), and both (C9orf72), and summarize visual observations of images reported in the rarer genes (CHMP2B, TARDBP, FUS, OPTN, VCP, UBQLN2, SQSTM1, TREM2, CHCHD10, TBK1).
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Affiliation(s)
- Suvi Häkkinen
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
| | - Stephanie A Chu
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
| | - Suzee E Lee
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, San Francisco, CA, USA.
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Ducharme S, Dols A, Laforce R, Devenney E, Kumfor F, van den Stock J, Dallaire-Théroux C, Seelaar H, Gossink F, Vijverberg E, Huey E, Vandenbulcke M, Masellis M, Trieu C, Onyike C, Caramelli P, de Souza LC, Santillo A, Waldö ML, Landin-Romero R, Piguet O, Kelso W, Eratne D, Velakoulis D, Ikeda M, Perry D, Pressman P, Boeve B, Vandenberghe R, Mendez M, Azuar C, Levy R, Le Ber I, Baez S, Lerner A, Ellajosyula R, Pasquier F, Galimberti D, Scarpini E, van Swieten J, Hornberger M, Rosen H, Hodges J, Diehl-Schmid J, Pijnenburg Y. Recommendations to distinguish behavioural variant frontotemporal dementia from psychiatric disorders. Brain 2020; 143:1632-1650. [PMID: 32129844 PMCID: PMC7849953 DOI: 10.1093/brain/awaa018] [Citation(s) in RCA: 133] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/27/2019] [Accepted: 12/08/2019] [Indexed: 12/12/2022] Open
Abstract
The behavioural variant of frontotemporal dementia (bvFTD) is a frequent cause of early-onset dementia. The diagnosis of bvFTD remains challenging because of the limited accuracy of neuroimaging in the early disease stages and the absence of molecular biomarkers, and therefore relies predominantly on clinical assessment. BvFTD shows significant symptomatic overlap with non-degenerative primary psychiatric disorders including major depressive disorder, bipolar disorder, schizophrenia, obsessive-compulsive disorder, autism spectrum disorders and even personality disorders. To date, ∼50% of patients with bvFTD receive a prior psychiatric diagnosis, and average diagnostic delay is up to 5-6 years from symptom onset. It is also not uncommon for patients with primary psychiatric disorders to be wrongly diagnosed with bvFTD. The Neuropsychiatric International Consortium for Frontotemporal Dementia was recently established to determine the current best clinical practice and set up an international collaboration to share a common dataset for future research. The goal of the present paper was to review the existing literature on the diagnosis of bvFTD and its differential diagnosis with primary psychiatric disorders to provide consensus recommendations on the clinical assessment. A systematic literature search with a narrative review was performed to determine all bvFTD-related diagnostic evidence for the following topics: bvFTD history taking, psychiatric assessment, clinical scales, physical and neurological examination, bedside cognitive tests, neuropsychological assessment, social cognition, structural neuroimaging, functional neuroimaging, CSF and genetic testing. For each topic, responsible team members proposed a set of minimal requirements, optimal clinical recommendations, and tools requiring further research or those that should be developed. Recommendations were listed if they reached a ≥ 85% expert consensus based on an online survey among all consortium participants. New recommendations include performing at least one formal social cognition test in the standard neuropsychological battery for bvFTD. We emphasize the importance of 3D-T1 brain MRI with a standardized review protocol including validated visual atrophy rating scales, and to consider volumetric analyses if available. We clarify the role of 18F-fluorodeoxyglucose PET for the exclusion of bvFTD when normal, whereas non-specific regional metabolism abnormalities should not be over-interpreted in the case of a psychiatric differential diagnosis. We highlight the potential role of serum or CSF neurofilament light chain to differentiate bvFTD from primary psychiatric disorders. Finally, based on the increasing literature and clinical experience, the consortium determined that screening for C9orf72 mutation should be performed in all possible/probable bvFTD cases or suspected cases with strong psychiatric features.
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Affiliation(s)
- Simon Ducharme
- Department of Psychiatry, McGill University Health Centre, McGill University, Montreal, Canada
- McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, 3801 University Str., Montreal, Quebec, H3A 2B4, Canada
| | - Annemiek Dols
- Department of Old Age Psychiatry, GGZ InGeest, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Robert Laforce
- Clinique Interdisciplinaire de Mémoire (CIME), Laval University, Quebec, Canada
| | - Emma Devenney
- Brain and Mind Centre, University of Sydney, Sydney, Australia
| | - Fiona Kumfor
- Brain and Mind Centre, University of Sydney, Sydney, Australia
| | - Jan van den Stock
- Laboratory for Translational Neuropsychiatry, Department of Neurosciences, KU Leuven, Leuven, Belgium
| | | | - Harro Seelaar
- Department of Neurology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Flora Gossink
- Department of Old Age Psychiatry, GGZ InGeest, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Everard Vijverberg
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
| | - Edward Huey
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Department of Psychiatry, Colombia University, New York, USA
| | - Mathieu Vandenbulcke
- Department of Geriatric Psychiatry, University Hospitals Leuven, Leuven, Belgium
| | - Mario Masellis
- Department of Neurology, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Calvin Trieu
- Department of Old Age Psychiatry, GGZ InGeest, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Chiadi Onyike
- Division of Geriatric Psychiatry and Neuropsychiatry, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Paulo Caramelli
- Behavioral and Cognitive Neurology Research Group, Department of Internal Medicine, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Leonardo Cruz de Souza
- Behavioral and Cognitive Neurology Research Group, Department of Internal Medicine, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Maria Landqvist Waldö
- Division of Clinical Sciences Helsingborg, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | | | - Olivier Piguet
- Division of Clinical Sciences Helsingborg, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Wendy Kelso
- Neuropsychiatry Unit, Royal Melbourne Hospital, Melbourne, Australia
| | - Dhamidhu Eratne
- Neuropsychiatry Unit, Royal Melbourne Hospital, Melbourne, Australia
| | - Dennis Velakoulis
- Neuropsychiatry Unit, Royal Melbourne Hospital, Melbourne, Australia
| | - Manabu Ikeda
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, Japan
| | - David Perry
- Department of Neurology, UCSF Weill Institute for Neurosciences, University of California San Francisco, San Francisco, USA
| | - Peter Pressman
- Department of Neurology, University of Colorado Denver, Aurora, USA
| | - Bradley Boeve
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Rik Vandenberghe
- Department of Neurology, University Hospital Leuven, Leuven, Belgium
| | - Mario Mendez
- Department of Neurology, UCLA Medical Centre, University of California Los Angeles, Los Angeles, USA
| | - Carole Azuar
- Department of Neurology, Hôpital La Pitié Salpêtrière, Paris, France
| | - Richard Levy
- Department of Neurology, Hôpital La Pitié Salpêtrière, Paris, France
| | - Isabelle Le Ber
- Department of Neurology, Hôpital La Pitié Salpêtrière, Paris, France
| | - Sandra Baez
- Department of Psychology, Andes University, Bogota, Colombia
| | - Alan Lerner
- Department of Neurology, University Hospital Cleveland Medical Center, Cleveland, USA
| | - Ratnavalli Ellajosyula
- Department of Neurology, Manipal Hospital and Annasawmy Mudaliar Hospital, Bangalore, India
| | - Florence Pasquier
- Univ Lille, Inserm U1171, Memory Center, CHU Lille, DISTAlz, Lille, France
| | - Daniela Galimberti
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Centro Dino Ferrari, Milan, Italy
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, Neurodegenerative Diseases Unit Milan, Italy
| | - Elio Scarpini
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Centro Dino Ferrari, Milan, Italy
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, Neurodegenerative Diseases Unit Milan, Italy
| | - John van Swieten
- Department of Neurology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | | | - Howard Rosen
- Memory and Aging Center, University of California San Francisco, San Francisco, USA
| | - John Hodges
- Brain and Mind Centre, University of Sydney, Sydney, Australia
| | - Janine Diehl-Schmid
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
| | - Yolande Pijnenburg
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
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Géraudie A, Guerrier L, Le Ber I, Clot F, Péran P, Pariente J. Atypical clinical presentation and typical FTD atrophy: 17-year clinical follow-up and MRI analysis of a slowly progressive bvFTD associated with C9orf72 expansion. Rev Neurol (Paris) 2020; 176:627-629. [PMID: 32178877 DOI: 10.1016/j.neurol.2020.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/29/2020] [Accepted: 02/07/2020] [Indexed: 12/01/2022]
Affiliation(s)
- A Géraudie
- Department of neurology, Toulouse university hospital, Toulouse, France.
| | - L Guerrier
- Inserm, UPS, ToNIC, Toulouse NeuroImaging Centre, university of Toulouse, Toulouse, France
| | - I Le Ber
- Inserm U 1127, CNRS UMR 7225, ICM Brain and Spine Institute, Sorbonne université, Paris, France; Centre de référence des démences rares, hôpital de la Pitié-Salpêtrière, Assistance publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - F Clot
- UF de neurogénétique moléculaire et cellulaire, département de génétique, hôpitaux universitaires La-Pitié-Salpêtrière-Charles Foix, AP-HP, Paris, France
| | - P Péran
- Inserm, UPS, ToNIC, Toulouse NeuroImaging Centre, university of Toulouse, Toulouse, France
| | - J Pariente
- Department of neurology, Toulouse university hospital, Toulouse, France; Inserm, UPS, ToNIC, Toulouse NeuroImaging Centre, university of Toulouse, Toulouse, France
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Iribarne C, Renner V, Pérez C, de Guevara DL. Trastornos del Ánimo y Demencia. Aspectos clínicos y estudios complementarios en el diagnóstico diferencial. Revista Médica Clínica Las Condes 2020; 31:150-162. [DOI: 10.1016/j.rmclc.2020.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Poos JM, Jiskoot LC, Leijdesdorff SMJ, Seelaar H, Panman JL, van der Ende EL, Mol MO, Meeter LHH, Pijnenburg YAL, Donker Kaat L, de Jong FJ, van Swieten JC, Papma JM, van den Berg E. Cognitive profiles discriminate between genetic variants of behavioral frontotemporal dementia. J Neurol 2020; 267:1603-1612. [PMID: 32052166 PMCID: PMC7293665 DOI: 10.1007/s00415-020-09738-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/28/2020] [Accepted: 01/30/2020] [Indexed: 12/12/2022]
Abstract
Introduction Trials to test disease-modifying treatments for frontotemporal dementia are eagerly awaited and sensitive instruments to assess potential treatment effects are increasingly urgent, yet lacking thus far. We aimed to identify gene-specific instruments assessing clinical onset and disease progression by comparing cognitive functioning between bvFTD patients across genetic mutations. Methods We examined differences in 7 cognitive domains between bvFTD patients with GRN (n = 20), MAPT (n = 29) or C9orf72 (n = 31) mutations, and non-carriers (n = 24), and described longitudinal (M = 22.6 months, SD = 16.6) data in a subsample (n = 27). Results Patients showed overall cognitive impairment, except memory recall, working memory and visuoconstruction. GRN patients performed lower on executive function (mean difference − 2.1; 95%CI − 4.1 to − 0.5) compared to MAPT and lower on attention compared to MAPT (mean difference − 2.5; 95%CI − 4.7 to − 0.3) and C9orf72 (mean difference − 2.4; 95%CI − 4.5 to − 0.3). Only MAPT patients were impaired on delayed recall (mean difference − 1.4; 95%CI − 2.1 to − 0.7). GRN patients declined rapidly on attention and memory, MAPT declined in confrontation naming, whereas C9orf72 patients were globally impaired but remained relatively stable over time on all cognitive domains. Discussion This study shows gene-specific cognitive profiles in bvFTD, which underlines the value of neuropsychological tests as outcome measures in upcoming trials for genetic bvFTD. Electronic supplementary material The online version of this article (10.1007/s00415-020-09738-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- J M Poos
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands. .,Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
| | - L C Jiskoot
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands.,Dementia Research Center, University College London, London, UK
| | - S M J Leijdesdorff
- Department of Psychiatry and Psychology, Maastricht University, Maastricht, The Netherlands
| | - H Seelaar
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
| | - J L Panman
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands.,Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - E L van der Ende
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
| | - M O Mol
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
| | - L H H Meeter
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
| | - Y A L Pijnenburg
- Department of Neurology, Alzheimer Center, Location VU University Medical CenterAmsterdam Neuroscience, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - L Donker Kaat
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - F J de Jong
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
| | - J C van Swieten
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
| | - J M Papma
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
| | - E van den Berg
- Department of Neurology, Alzheimer Center, Erasmus MC University Medical Center, Dr. Molewaterplein 40, 3000 CA, Rotterdam, The Netherlands
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Abstract
PURPOSE OF REVIEW This article describes the clinical, anatomic, genetic, and pathologic features of behavioral variant frontotemporal dementia (bvFTD) and discusses strategies to improve diagnostic accuracy, emphasizing common pitfalls to avoid. Key aspects of management and the future of diagnosis and care for the disorder are highlighted. RECENT FINDINGS BvFTD is a clinical syndrome, not a disease. Patients with the syndrome share core symptoms that reflect degeneration within the most consistently affected brain regions, but accompanying features vary and reflect the precise topography of regional degeneration. The clinician must distinguish a bvFTD syndrome from psychiatric illness and other neurodegenerative syndromes that feature a prominent behavioral component. Antemortem prediction of pathologic diagnosis remains imperfect but improves with careful attention to the clinical details. Management should emphasize prevention of caregiver distress, behavioral and environmental strategies, symptom-based psychopharmacology, and genetic counseling. SUMMARY BvFTD is an important and challenging dementia syndrome. Although disease-modifying treatments are lacking, clinicians can have a profound impact on a family coping with this disorder. Treatment trials are under way for some genetic forms of bvFTD. For sporadic disease, pathologic heterogeneity remains a major challenge, and ongoing research seeks to improve antemortem molecular diagnosis to facilitate therapeutic discovery.
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Rosen HJ, Boeve BF, Boxer AL. Tracking disease progression in familial and sporadic frontotemporal lobar degeneration: Recent findings from ARTFL and LEFFTDS. Alzheimers Dement 2020; 16:71-78. [PMID: 31914219 PMCID: PMC6953606 DOI: 10.1002/alz.12004] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/17/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Familial frontotemporal lobar degeneration (f-FTLD) due to autosomal dominant mutations is an important entity for developing treatments for FTLD. The Advancing Research and Treatment for Frontotemporal Lobar Degeneration (ARTFL) and Longitudinal Evaluation of Familial Frontotemporal Dementia Subjects (LEFFTDS) longitudinal studies were designed to describe the natural history of f-FTLD. METHODS We summarized recent publications from the ARTFL and LEFFTDS studies, along with other recent publications describing the natural history of f-FTLD. RESULTS Published and emerging studies are producing data on all phases of f-FTLD, including the asymptomatic and symptomatic phases of disease, as well as the transitional phase when symptoms are just beginning to develop. These data indicate that rates of change increase along with disease severity, which is consistent with commonly cited models of neurodegeneration, and that measurement of biomarkers may predict onset of symptoms. DISCUSSION Data from large multisite studies are producing important data on the natural history of f-FTLD that will be critical for planning intervention trials.
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Affiliation(s)
- Howard J. Rosen
- Department of NeurologyMemory and Aging CenterUniversity of California, San FranciscoSan FranciscoCalifornia
| | | | - Adam L. Boxer
- Department of NeurologyMemory and Aging CenterUniversity of California, San FranciscoSan FranciscoCalifornia
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Heuer HW, Wang P, Rascovsky K, Wolf A, Appleby B, Bove J, Bordelon Y, Brannelly P, Brushaber DE, Caso C, Coppola G, Dickerson B, Dickinson S, Domoto-Reilly K, Faber K, Ferrall J, Fields J, Fishman A, Fong J, Foroud T, Forsberg LK, Gearhart D, Ghazanfari B, Ghoshal N, Goldman J, Graff-Radford J, Graff-Radford N, Grant I, Grossman M, Haley D, Hsiung GY, Huey E, Irwin D, Jones D, Kantarci K, Karydas A, Kaufer D, Kerwin D, Knopman D, Kornak J, Kramer JH, Kraft R, Kremers WK, Kukull W, Litvan I, Ljubenkov P, Mackenzie IR, Maldonado M, Manoochehri M, McGinnis S, McKinley E, Mendez MF, Miller BL, Onyike C, Pantelyat A, Pearlman R, Petrucelli L, Potter M, Rademakers R, Ramos EM, Rankin KP, Roberson ED, Rogalski E, Sengdy P, Shaw L, Syrjanen J, Tartaglia MC, Tatton N, Taylor J, Toga A, Trojanowski J, Weintraub S, Wong B, Wszolek Z, Boeve BF, Rosen HJ, Boxer AL. Comparison of sporadic and familial behavioral variant frontotemporal dementia (FTD) in a North American cohort. Alzheimers Dement 2020; 16:60-70. [PMID: 31914226 PMCID: PMC7192555 DOI: 10.1002/alz.12046] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Behavioral variant frontotemporal dementia (bvFTD) may present sporadically or due to an autosomal dominant mutation. Characterization of both forms will improve understanding of the generalizability of assessments and treatments. METHODS A total of 135 sporadic (s-bvFTD; mean age 63.3 years; 34% female) and 99 familial (f-bvFTD; mean age 59.9; 48% female) bvFTD participants were identified. f-bvFTD cases included 43 with known or presumed chromosome 9 open reading frame 72 (C9orf72) gene expansions, 28 with known or presumed microtubule-associated protein tau (MAPT) mutations, 14 with known progranulin (GRN) mutations, and 14 with a strong family history of FTD but no identified mutation. RESULTS Participants with f-bvFTD were younger and had earlier age at onset. s-bvFTD had higher total Neuropsychiatric Inventory Questionnaire (NPI-Q) scores due to more frequent endorsement of depression and irritability. DISCUSSION f-bvFTD and s-bvFTD cases are clinically similar, suggesting the generalizability of novel biomarkers, therapies, and clinical tools developed in either form to the other.
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Affiliation(s)
- Hilary W Heuer
- University of California, San Francisco, San Francisco, California
| | - P Wang
- University of California, San Francisco, San Francisco, California
| | - K Rascovsky
- University of Pennsylvania, Philadelphia, Pennsylvania
| | - A Wolf
- University of California, San Francisco, San Francisco, California
| | - B Appleby
- Case Western Reserve University, Cleveland, Ohio
| | - J Bove
- University of Pennsylvania, Philadelphia, Pennsylvania
| | - Y Bordelon
- University of California, Los Angeles, Los Angeles, California
| | - P Brannelly
- Tau Consortium, Rainwater Charitable Foundation, Fort Worth, Texas
| | | | - C Caso
- U Washington, Seattle, Washington
| | - G Coppola
- University of California, Los Angeles, Los Angeles, California
| | - B Dickerson
- Harvard University/MGH, Boston, Massachusetts
| | - S Dickinson
- Association for Frontotemporal Degeneration, Radnor, Pennsylvania
| | | | - K Faber
- National Centralized Repository for Alzheimer's Disease and Related Disorders (NCRAD), Indiana University, Indianapolis, Indiana
| | - J Ferrall
- University of North Carolina, Chapel Hill, North Carolina
| | - J Fields
- Mayo Clinic, Rochester, Minnesota
| | - A Fishman
- Johns Hopkins University, Baltimore, Maryland
| | - J Fong
- University of California, San Francisco, San Francisco, California
| | - T Foroud
- National Centralized Repository for Alzheimer's Disease and Related Disorders (NCRAD), Indiana University, Indianapolis, Indiana
| | | | | | | | - N Ghoshal
- Washington University, St. Louis, Missouri
| | - J Goldman
- Columbia University, New York, New York
| | | | | | - I Grant
- Northwestern University, Chicago, Illinois
| | - M Grossman
- University of Pennsylvania, Philadelphia, Pennsylvania
| | - D Haley
- Mayo Clinic, Jacksonville, Florida
| | - G-Y Hsiung
- University of British Columbia, Vancouver, British Columbia, Canada
| | - E Huey
- Columbia University, New York, New York
| | - D Irwin
- University of Pennsylvania, Philadelphia, Pennsylvania
| | - D Jones
- Mayo Clinic, Rochester, Minnesota
| | | | - A Karydas
- University of California, San Francisco, San Francisco, California
| | - D Kaufer
- University of North Carolina, Chapel Hill, North Carolina
| | - D Kerwin
- The University of Texas, Southwestern Medical Center at Dallas, Dallas, Texas
| | | | - J Kornak
- University of California, San Francisco, San Francisco, California
| | - J H Kramer
- University of California, San Francisco, San Francisco, California
| | - R Kraft
- Mayo Clinic, Rochester, Minnesota
| | | | - W Kukull
- National Alzheimer Coordinating Center (NACC), University of Washington, Seattle, Washington
| | - I Litvan
- University of California, San Diego, San Diego, California
| | - P Ljubenkov
- University of California, San Francisco, San Francisco, California
| | - I R Mackenzie
- University of British Columbia, Vancouver, British Columbia, Canada
| | - M Maldonado
- University of California, Los Angeles, Los Angeles, California
| | | | - S McGinnis
- Harvard University/MGH, Boston, Massachusetts
| | - E McKinley
- University of Alabama at Birmingham, Birmingham, Alabama
| | - M F Mendez
- University of California, Los Angeles, Los Angeles, California
| | - B L Miller
- University of California, San Francisco, San Francisco, California
| | - C Onyike
- Johns Hopkins University, Baltimore, Maryland
| | - A Pantelyat
- Johns Hopkins University, Baltimore, Maryland
| | - R Pearlman
- Bluefield Project, San Francisco, California
| | | | - M Potter
- National Centralized Repository for Alzheimer's Disease and Related Disorders (NCRAD), Indiana University, Indianapolis, Indiana
| | | | - E M Ramos
- University of California, Los Angeles, Los Angeles, California
| | - K P Rankin
- University of California, San Francisco, San Francisco, California
| | - E D Roberson
- University of Alabama at Birmingham, Birmingham, Alabama
| | - E Rogalski
- Northwestern University, Chicago, Illinois
| | - P Sengdy
- University of British Columbia, Vancouver, British Columbia, Canada
| | - L Shaw
- University of Pennsylvania, Philadelphia, Pennsylvania
| | | | | | - N Tatton
- Association for Frontotemporal Degeneration, Radnor, Pennsylvania
| | - J Taylor
- University of California, San Francisco, San Francisco, California
| | - A Toga
- Laboratory of Neuroimaging (LONI), USC, Los Angeles, California
| | | | | | - B Wong
- Harvard University/MGH, Boston, Massachusetts
| | | | | | - H J Rosen
- University of California, San Francisco, San Francisco, California
| | - A L Boxer
- University of California, San Francisco, San Francisco, California
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48
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Mutsaerts HJMM, Mirza SS, Petr J, Thomas DL, Cash DM, Bocchetta M, de Vita E, Metcalfe AWS, Shirzadi Z, Robertson AD, Tartaglia MC, Mitchell SB, Black SE, Freedman M, Tang-Wai D, Keren R, Rogaeva E, van Swieten J, Laforce R, Tagliavini F, Borroni B, Galimberti D, Rowe JB, Graff C, Frisoni GB, Finger E, Sorbi S, de Mendonça A, Rohrer JD, MacIntosh BJ, Masellis M. Cerebral perfusion changes in presymptomatic genetic frontotemporal dementia: a GENFI study. Brain 2019; 142:1108-1120. [PMID: 30847466 PMCID: PMC6439322 DOI: 10.1093/brain/awz039] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 12/14/2018] [Accepted: 01/04/2019] [Indexed: 11/12/2022] Open
Abstract
Genetic forms of frontotemporal dementia are most commonly due to mutations in three genes, C9orf72, GRN or MAPT, with presymptomatic carriers from families representing those at risk. While cerebral blood flow shows differences between frontotemporal dementia and other forms of dementia, there is limited evidence of its utility in presymptomatic stages of frontotemporal dementia. This study aimed to delineate the cerebral blood flow signature of presymptomatic, genetic frontotemporal dementia using a voxel-based approach. In the multicentre GENetic Frontotemporal dementia Initiative (GENFI) study, we investigated cross-sectional differences in arterial spin labelling MRI-based cerebral blood flow between presymptomatic C9orf72, GRN or MAPT mutation carriers (n = 107) and non-carriers (n = 113), using general linear mixed-effects models and voxel-based analyses. Cerebral blood flow within regions of interest derived from this model was then explored to identify differences between individual gene carrier groups and to estimate a timeframe for the expression of these differences. The voxel-based analysis revealed a significant inverse association between cerebral blood flow and the expected age of symptom onset in carriers, but not non-carriers. Regions included the bilateral insulae/orbitofrontal cortices, anterior cingulate/paracingulate gyri, and inferior parietal cortices, as well as the left middle temporal gyrus. For all bilateral regions, associations were greater on the right side. After correction for partial volume effects in a region of interest analysis, the results were found to be largely driven by the C9orf72 genetic subgroup. These cerebral blood flow differences first appeared approximately 12.5 years before the expected symptom onset determined on an individual basis. Cerebral blood flow was lower in presymptomatic mutation carriers closer to and beyond their expected age of symptom onset in key frontotemporal dementia signature regions. These results suggest that arterial spin labelling MRI may be a promising non-invasive imaging biomarker for the presymptomatic stages of genetic frontotemporal dementia.
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Affiliation(s)
- Henri J M M Mutsaerts
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada
| | - Saira S Mirza
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada
| | - Jan Petr
- PET Center, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - David L Thomas
- Institute of Neurology, University College London, London, UK
| | - David M Cash
- Institute of Neurology, University College London, London, UK
| | | | - Enrico de Vita
- Institute of Neurology, University College London, London, UK
| | - Arron W S Metcalfe
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada
| | - Zahra Shirzadi
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada
| | - Andrew D Robertson
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada
| | - Maria Carmela Tartaglia
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada.,Memory Clinic, University Health Network, Toronto, Canada.,Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
| | - Sara B Mitchell
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada.,Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada.,L.C. Campbell Cognitive Neurology Research Unit, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Sandra E Black
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada.,Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada.,L.C. Campbell Cognitive Neurology Research Unit, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Morris Freedman
- Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada.,Baycrest Centre for Geriatric Care, Toronto, Canada
| | - David Tang-Wai
- Memory Clinic, University Health Network, Toronto, Canada.,Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
| | - Ron Keren
- Memory Clinic, University Health Network, Toronto, Canada
| | - Ekaterina Rogaeva
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
| | - John van Swieten
- Department of Neurology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Robert Laforce
- Clinique Interdisciplinaire de Mémoire (CIME), Département des Sciences Neurologiques, CHU de Québec, Faculté de médecine, Université Laval, Québec, Canada
| | - Fabrizio Tagliavini
- Fondazione Istituto di Ricovero e Cura a Carattere Scientifico, Milan, Italy
| | - Barbara Borroni
- Department of Medical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Daniela Galimberti
- Centro Dino Ferrari, Fondazione Ca' Granda IRCCS Ospedale Policlinico, University of Milan, Milan, Italy
| | - James B Rowe
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Caroline Graff
- Department of Geriatric Medicine, Karolinska Institutet, Stockholm, Sweden
| | | | - Elizabeth Finger
- Department of Clinical Neurological Sciences, University of Western Ontario, London, Canada
| | - Sandro Sorbi
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | | | | | - Bradley J MacIntosh
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada
| | - Mario Masellis
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, University of Toronto, Toronto, Canada.,Division of Neurology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada.,L.C. Campbell Cognitive Neurology Research Unit, Sunnybrook Health Sciences Centre, Toronto, Canada.,Cognitive and Movement Disorders Clinic, Sunnybrook Health Sciences Centre, Toronto, Canada
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49
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Meijboom R, Steketee RME, Jiskoot LC, Bron EE, van der Lugt A, van Swieten JC, Smits M. Qualitative Assessment of Longitudinal Changes in Phenocopy Frontotemporal Dementia. Front Neurol 2019; 10:1207. [PMID: 31798526 PMCID: PMC6874122 DOI: 10.3389/fneur.2019.01207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 10/29/2019] [Indexed: 01/22/2023] Open
Abstract
Phenocopy frontotemporal dementia (phFTD) shares core characteristics with behavioral variant frontotemporal dementia (bvFTD), yet without associated cognitive deficits and brain abnormalities on conventional magnetic resonance imaging (MRI), and without progression. Using advanced MRI techniques, we previously observed subtle structural and functional brain changes in phFTD similar to bvFTD. The aim of the current study was to follow these as well as cognition in phFTD over time, by means of a descriptive case series. Cognition, gray matter (GM) volume and white matter (WM) microstructure, and perfusion of 6 phFTD patients were qualitatively compared longitudinally (3-years follow-up), and cross-sectionally with baseline data from 9 bvFTD patients and 17 controls. For functional brain changes, arterial spin labeling (ASL) was performed to assess GM perfusion. For structural brain changes, diffusion tensor imaging was performed to assess WM microstructure and T1w imaging to assess GM volume. MRI acquisition was performed at 3T (General Electric, US). Clinical profiles of phFTD cases at follow-up are described. At follow-up phFTD patients showed clinical symptomatology similar to bvFTD, but had a relatively stable clinical profile. Longitudinal qualitative comparisons in phFTD showed some deterioration of language and memory function, a stable pattern of structural brain abnormalities and increased perfusion over time. Additionally, both baseline and follow-up cognitive scores and structural values in phFTD were generally in between those of controls and bvFTD. Although a descriptive case series does not allow for strong conclusions, these observations in a unique longitudinal phFTD patient cohort are suggestive of the notion that phFTD and bvFTD may belong to the same disease spectrum. They may also provide a basis for further longitudinal studies in phFTD, specifically exploring the structural vs. functional brain changes. Such studies are essential for improved insight, accurate diagnosis, and appropriate treatment of phFTD.
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Affiliation(s)
- Rozanna Meijboom
- Department of Radiology and Nuclear Medicine, Erasmus MC-University Medical Center Rotterdam, Rotterdam, Netherlands.,Center for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Rebecca M E Steketee
- Department of Radiology and Nuclear Medicine, Erasmus MC-University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Lize C Jiskoot
- Department of Neurology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Esther E Bron
- Biomedical Imaging Group Rotterdam, Departments of Medical Informatics and Radiology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Aad van der Lugt
- Department of Radiology and Nuclear Medicine, Erasmus MC-University Medical Center Rotterdam, Rotterdam, Netherlands
| | - John C van Swieten
- Department of Neurology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Marion Smits
- Department of Radiology and Nuclear Medicine, Erasmus MC-University Medical Center Rotterdam, Rotterdam, Netherlands
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50
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Staffaroni AM, Ljubenkov PA, Kornak J, Cobigo Y, Datta S, Marx G, Walters SM, Chiang K, Olney N, Elahi FM, Knopman DS, Dickerson BC, Boeve BF, Gorno-Tempini ML, Spina S, Grinberg LT, Seeley WW, Miller BL, Kramer JH, Boxer AL, Rosen HJ. Longitudinal multimodal imaging and clinical endpoints for frontotemporal dementia clinical trials. Brain 2019; 142:443-459. [PMID: 30698757 DOI: 10.1093/brain/awy319] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 11/02/2018] [Indexed: 12/22/2022] Open
Abstract
Frontotemporal dementia refers to a group of progressive neurodegenerative syndromes usually caused by the accumulation of pathological tau or TDP-43 proteins. The effects of these proteins in the brain are complex, and each can present with several different clinical syndromes. Clinical efficacy trials of drugs targeting these proteins must use endpoints that are meaningful to all participants despite the variability in symptoms across patients. There are many candidate clinical measures, including neuropsychological scores and functional measures. Brain imaging is another potentially attractive outcome that can be precisely quantified and provides evidence of disease modification. Most imaging studies in frontotemporal dementia have been cross-sectional, and few have compared longitudinal changes in cortical volume with changes in other measures such as perfusion and white matter integrity. The current study characterized longitudinal changes in 161 patients with three frontotemporal dementia syndromes: behavioural variant frontotemporal dementia (n = 77) and the semantic (n = 45) and non-fluent (n = 39) variants of primary progressive aphasia. Visits included comprehensive neuropsychological and functional assessment, structural MRI (3 T), diffusion tensor imaging, and arterial spin labelled perfusion imaging. The goal was to identify measures that are appropriate as clinical trial outcomes for each group, as well as those that might be appropriate for trials that would include more than one of these groups. Linear mixed effects models were used to estimate changes in each measure, and to examine the correlation between imaging and clinical changes. Sample sizes were estimated based on the observed effects for theoretical clinical trials using bootstrapping techniques to provide 95% confidence intervals for these estimates. Declines in functional and neuropsychological measures, as well as frontal and temporal cortical volumes and white matter microstructure were detected in all groups. Imaging changes were statistically significantly correlated with, and explained a substantial portion of variance in, the change in most clinical measures. Perfusion and diffusion tensor imaging accounted for variation in clinical decline beyond volume alone. Sample size estimates for atrophy and diffusion imaging were comparable to clinical measures. Corpus callosal fractional anisotropy led to the lowest sample size estimates for all three syndromes. These findings provide further guidance on selection of trial endpoints for studies in frontotemporal dementia and support the use of neuroimaging, particularly structural and diffusion weighted imaging, as biomarkers. Diffusion and perfusion imaging appear to offer additional utility for explaining clinical change beyond the variance explained by volume alone, arguing for considering multimodal imaging in treatment trials.
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Affiliation(s)
- Adam M Staffaroni
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Peter A Ljubenkov
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - John Kornak
- Department of Epidemiology and Biostatistics, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Yann Cobigo
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Samir Datta
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Gabe Marx
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Samantha M Walters
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Kevin Chiang
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Nick Olney
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Fanny M Elahi
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - David S Knopman
- Department of Neurology, College of Medicine, Mayo Clinic, 200 First Street SW, Rochester, Minnesota USA
| | - Bradford C Dickerson
- Frontotemporal Disorders Unit, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Charleston, MA, USA
| | - Bradley F Boeve
- Department of Neurology, College of Medicine, Mayo Clinic, 200 First Street SW, Rochester, Minnesota USA
| | - Maria Luisa Gorno-Tempini
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Salvatore Spina
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Lea T Grinberg
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA.,Department of Pathology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA.,Department of Pathology - LIM 22, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - William W Seeley
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA.,Department of Pathology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Bruce L Miller
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Joel H Kramer
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Adam L Boxer
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
| | - Howard J Rosen
- Department of Neurology, Memory and Aging Center, University of California at San Francisco (UCSF), San Francisco, CA, USA
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