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Muñoz-Sánchez G, Planagumà J, Naranjo L, Couso R, Sabater L, Guasp M, Martínez-Hernández E, Graus F, Dalmau J, Ruiz-García R. The diagnosis of anti-LGI1 encephalitis varies with the type of immunodetection assay and sample examined. Front Immunol 2022; 13:1069368. [PMID: 36591253 PMCID: PMC9798107 DOI: 10.3389/fimmu.2022.1069368] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 11/25/2022] [Indexed: 12/23/2022] Open
Abstract
Detection of Leucine-rich glioma inactivated 1 (LGI1) antibodies in patients with suspected autoimmune encephalitis is important for diagnostic confirmation and prompt implementation of immunomodulatory treatment. However, the clinical laboratory diagnosis can be challenging. Previous reports have suggested that the type of test and patient's sample (serum or CSF) have different clinical performances, however, there are no studies comparing different diagnostic tests on paired serum/CSF samples of patients with anti-LGI1 encephalitis. Here, we assessed the clinical performance of a commercial and an in house indirect immunofluorescent cell based assays (IIF-CBA) using paired serum/CSF of 70 patients with suspected anti-LGI1 encephalitis and positive rat brain indirect immunohistochemistry (IIHC). We found that all (100%) patients had CSF antibodies when the in house IIF-CBA was used, but only 88 (83%) were positive if the commercial test was used. In contrast, sera positivity rate was higher with the commercial test (94%) than with the in house assay (86%). If both serum and CSF were examined with the commercial IIFA-CBA, 69/70 (98.5%) patients were positive in at least one of the samples. These findings are clinically important for centers in which rat brain IIHC and in house IIFA-CBA are not available. Moreover, the observation that all patients with anti-LGI1 encephalitis have antibodies in CSF is in line with the concept that these antibodies are pathogenic.
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Affiliation(s)
- Guillermo Muñoz-Sánchez
- Immunology Department, Centre Diagnòstic Biomèdic, Hospital Clínic Barcelona, Barcelona, Spain
| | - Jesús Planagumà
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Laura Naranjo
- Immunology Department, Centre Diagnòstic Biomèdic, Hospital Clínic Barcelona, Barcelona, Spain
| | - Rocío Couso
- Immunology Department, Centre Diagnòstic Biomèdic, Hospital Clínic Barcelona, Barcelona, Spain
| | - Lidia Sabater
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Mar Guasp
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Neurology Department, Hospital Clínic, and University of Barcelona, Barcelona, Spain,Centro de Investigación Biomédica en Red, Enfermedades Raras (CIBERER), Madrid, Spain
| | - Eugenia Martínez-Hernández
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Neurology Department, Hospital Clínic, and University of Barcelona, Barcelona, Spain
| | - Francesc Graus
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Josep Dalmau
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Centro de Investigación Biomédica en Red, Enfermedades Raras (CIBERER), Madrid, Spain,Neurology Department, University of Pennsylvania, Philadelphia, PA, United States,Catalan Institution of Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Raquel Ruiz-García
- Immunology Department, Centre Diagnòstic Biomèdic, Hospital Clínic Barcelona, Barcelona, Spain,Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,*Correspondence: Raquel Ruiz-García,
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Pavǎl D, Cîmpan CM, Gherghel N, Damian LO, Tohǎnean N, Micluţia IV. Case Report: Anti-N-Methyl-D-Aspartate Receptor Encephalitis Manifesting With an Isolated Psychiatric Episode and Normal Ancillary Tests. Front Psychiatry 2022; 13:905088. [PMID: 35722579 PMCID: PMC9201108 DOI: 10.3389/fpsyt.2022.905088] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
The majority of patients with anti-N-Methyl-D-Aspartate receptor (NMDAR) encephalitis present with psychiatric symptoms and subsequently develop neurological features. However, isolated psychiatric episodes occur in <5% of affected individuals, less frequent at disease onset (<1%) compared to relapse (4%). We report the case of a previously healthy 24-year-old female who presented with psychotic symptoms and behavioral alterations. Despite therapy, she showed no improvement and subsequently developed catatonic features. While the ancillary tests were normal, the clinical warning signs raised the suspicion of anti-NMDAR encephalitis which we later confirmed. Given its strong association with underlying tumors, we screened the patient and found an ovarian teratoma. Once removed, the patient displayed a substantial improvement in the mental status. Besides being extremely rare, this case illustrates the need to maintain clinical suspicion of anti-NMDAR encephalitis even in the absence of neurological features or paraclinical anomalies.
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Affiliation(s)
- Denis Pavǎl
- Department of Psychiatry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | | | | | - Laura Otilia Damian
- Department of Rheumatology, Center for Rare Musculoskeletal Autoimmune and Autoinflammatory Diseases, Emergency County Hospital, Cluj-Napoca, Romania
| | - Nicoleta Tohǎnean
- Department of Neurology, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Valentina Micluţia
- Department of Psychiatry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Ismail FS, Spatola M, Woermann FG, Popkirov S, Jungilligens J, Bien CG, Wellmer J, Schlegel U. Diagnostic challenges in patients with temporal lobe seizures and features of autoimmune limbic encephalitis. Eur J Neurol 2021; 29:1303-1310. [PMID: 34288284 DOI: 10.1111/ene.15026] [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: 03/19/2021] [Accepted: 07/08/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Consensus criteria for autoimmune limbic encephalitis (ALE) allow for a diagnosis even without neuronal antibodies (Abs), but it remains unclear which clinical features should prompt neuronal Ab screening in temporal lobe epilepsy patients. The aim of the study was to investigate whether patients with temporal lobe seizures associated with additional symptoms or signs of limbic involvement may harbor neuronal Abs, and which clinical features should prompt neuronal Ab screening in these patients. METHODS We identified 47 patients from a tertiary epilepsy center with mediotemporal lobe seizures and additional features suggestive of limbic involvement, including either memory deficits, psychiatric symptoms, mediotemporal magnetic resonance imaging (MRI) hyperintensities or inflammatory cerebrospinal fluid (CSF). Neuronal Ab testing was carried out at two independent reference laboratories (Bielefeld-Bethel, Germany, and Barcelona, Spain). All brain MRI scans were assessed by two reviewers independently. RESULTS Temporal lobe seizures were accompanied by memory deficits in 35/46 (76%), psychiatric symptoms in 27/42 (64%), and both in 19/42 patients (45%). Limbic T2/fluid-attenuated inversion recovery signal hyperintensities were found in 26/46 patients (57%; unilateral: n = 22, bilateral: n = 4). Standard CSF studies were abnormal in 2/37 patients (5%). Neuronal Abs were confirmed in serum and/or CSF in 8/47 patients (17%) and were directed against neuronal cell-surface targets (leucine-rich glioma inactivated protein 1: n = 1, contactin-associated protein-2: n = 1, undetermined target: n = 3) or glutamic acid decarboxylase in its 65-kD isoform (n = 3, all with high titers). Compared to Ab-negative patients, those who harbored neuronal Abs were more likely to have uni- or bilateral mediotemporal MRI changes (8/8, 100% vs. 18/38, 47%; p = 0.01, Fisher's exact test). CONCLUSIONS In patients with temporal lobe seizures and additional limbic signs, 17% had neuronal Abs affirming ALE diagnosis. Mediotemporal MRI changes were found in all Ab-positive cases and had a positive likelihood ratio of 2.11 (95% confidence interval 1.51-2.95).
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Affiliation(s)
- Fatme Seval Ismail
- Department of Neurology, University Hospital Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Marianna Spatola
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clinic, University of Barcelona, Barcelona, Spain.,University of Lausanne (UNIL), Lausanne, Switzerland
| | - Friedrich G Woermann
- Department of Epileptology (Krankenhaus Mara), Medical School, Bielefeld University, Bielefeld, Germany
| | - Stoyan Popkirov
- Department of Neurology, University Hospital Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Johannes Jungilligens
- Department of Neurology, University Hospital Knappschaftskrankenhaus Bochum, Bochum, Germany.,Department of Neuropsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Christian G Bien
- Department of Epileptology (Krankenhaus Mara), Medical School, Bielefeld University, Bielefeld, Germany.,Laboratory Krone, Bad Salzuflen, Germany
| | - Jörg Wellmer
- Ruhr-Epileptology, Department of Neurology, University Hospital Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Uwe Schlegel
- Department of Neurology, University Hospital Knappschaftskrankenhaus Bochum, Bochum, Germany
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Ruiz-García R, Muñoz-Sánchez G, Naranjo L, Guasp M, Sabater L, Saiz A, Dalmau J, Graus F, Martinez-Hernandez E. Limitations of a Commercial Assay as Diagnostic Test of Autoimmune Encephalitis. Front Immunol 2021; 12:691536. [PMID: 34267758 PMCID: PMC8276168 DOI: 10.3389/fimmu.2021.691536] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/15/2021] [Indexed: 12/24/2022] Open
Abstract
Detection of neuronal surface antibodies (NSAb) is important for the diagnosis of autoimmune encephalitis (AE). Although most clinical laboratories use a commercial diagnostic kit (Euroimmun, Lübeck, Germany) based on indirect immunofluorescence on transfected cells (IIFA), clinical experience suggests diagnostic limitations. Here, we assessed the performance of the commercial IIFA in serum and CSF samples of patients with suspected AE previously examined by rat brain immunohistochemistry (Cohort A). Of 6213 samples, 404 (6.5%) showed brain immunostaining suggestive of NSAb: 163 (40%) were positive by commercial IIFA and 241 (60%) were negative. When these 241 samples were re-assessed with in-house IIFA, 42 (18%) were positive: 21 (9%) had NSAb against antigens not included in the commercial IIFA and the other 21 (9%) had NSAb against antigens included in the commercial kit (false negative results). False negative results occurred more frequently with CSF (29% vs 10% in serum) and predominantly affected GABABR (39%), LGI1 (17%) and AMPAR (11%) antibodies. Results were reproduced in a separate cohort (B) of 54 AE patients with LGI1, GABABR or AMPAR antibodies in CSF which were missed in 30% by commercial IIFA. Patients with discordant GABABR antibody results (positive in-house but negative commercial IIFA) were less likely to develop full-blown clinical syndrome; no significant clinical differences were noted for the other antibodies. Overall, NSAb testing by commercial IIFA led to false negative results in a substantial number of patients, mainly those affected by anti-LG1, GABABR or AMPAR encephalitis. If these disorders are suspected and commercial IIFA is negative, more comprehensive antibody studies are recommended.
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Affiliation(s)
- Raquel Ruiz-García
- Immunology Department, Centre Diagnòstic Biomèdic, Hospital Clínic, Barcelona, Spain
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | - Laura Naranjo
- Immunology Department, Centre Diagnòstic Biomèdic, Hospital Clínic, Barcelona, Spain
| | - Mar Guasp
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Neurology Department, Hospital Clinic, and University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red, Enfermedades Raras (CIBERER), Madrid, Spain
| | - Lidia Sabater
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Albert Saiz
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Neurology Department, Hospital Clinic, and University of Barcelona, Barcelona, Spain
| | - Josep Dalmau
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Neurology Department, Hospital Clinic, and University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red, Enfermedades Raras (CIBERER), Madrid, Spain
- Neurology Department, University of Pennsylvania, Philadelphia, PA, United States
- Catalan Institution of Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Francesc Graus
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Eugenia Martinez-Hernandez
- Neuroimmunology Program, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Neurology Department, Hospital Clinic, and University of Barcelona, Barcelona, Spain
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5
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Kunchok A, Flanagan EP, Krecke KN, Chen JJ, Caceres JA, Dominick J, Ferguson I, Kinkel R, Probasco JC, Ruvalcaba M, Santoro JD, Sieloff K, Timothy J, Weinshenker BG, McKeon A, Pittock SJ. MOG-IgG1 and co-existence of neuronal autoantibodies. Mult Scler 2020; 27:1175-1186. [PMID: 32907470 DOI: 10.1177/1352458520951046] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The presence of co-existent neuronal antibodies (neuronal-IgG) in patients with myelin oligodendrocyte glycoprotein immunoglobulin G (MOG-IgG1) is not yet well understood. OBJECTIVES The aim of this study was to investigate the co-existence of a broad range of neuronal-IgG in MOG-IgG1+ patients. METHODS MOG-IgG1+ patients were tested for 17 neuronal-IgGs in cerebrospinal fluid (CSF) and serum including NMDA-R-IgG, AMPA-R-IgG, GABAB-R-IgG, LGI1-IgG, CASPR2-IgG, GABAA-R-IgG, GAD65-IgG, mGLUR1-IgG, DPPX-IgG, CRMP5-IgG, amphiphysin-IgG, PCA1,2,Tr, and ANNA1,2,3. Clinical and radiological features of MOG-IgG1+ with NMDA-R-IgG in CSF were compared to a control cohort of MOG-IgG1+ patients without NMDA-R-IgG. RESULTS A total of 376 MOG-IgG1+ patients underwent testing for neuronal-IgGs. Serum testing for neuronal-IgGs (113 adults, 142 children) identified one child with NMDA-R-IgG (0.7%), one child with CASPR2-IgG (0.7%), one adult with LGI1-IgG (0.9%) and one adult with GABAA-R-IgG (0.9%). CSF testing for neuronal-IgGs (97 adults, 169 children) identified seven children (4%) and seven adults (7%) with NMDA-R-IgG, and one adult with GABAA-R-IgG (1%). The MOG-IgG1+/NMDA-R-IgG+ patients had a median age of 17 (range: 2-39) years. Features associated with MOG-IgG1+/NMDA-R-IgG+ included encephalopathy (p = 0.001), seizures (p = 0.045), and leptomeningeal enhancement (p = 0.045). CONCLUSION NMDA-R-IgG was the most frequently detected neuronal-IgG to co-exist with MOG-IgG1. MOG-IgG1+/NMDA-R-IgG+ patients most often presented with encephalopathy and seizures. Testing for MOG-IgG1 and NMDA-R-IgG may be warranted in patients with encephalopathy and inflammatory demyelinating syndromes.
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Affiliation(s)
- Amy Kunchok
- Department of Neurology, Mayo Clinic, Rochester, MN, USA/Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA/Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic, Rochester, MN, USA/Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA/Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Karl N Krecke
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - John J Chen
- Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA/Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA/Department of Ophthalmology, Mayo Clinic, Rochester, MN, USA
| | - J Alfredo Caceres
- Department of Neurology, John Hopkins University School of Medicine, Baltimore, MD, USA
| | - Justin Dominick
- Division of Neurology, Sharp Rees-Stealy Medical Group, San Diego, CA, USA
| | - Ian Ferguson
- Department of Rheumatology, Yale University School of Medicine, New Haven, CT, USA
| | - Revere Kinkel
- Department of Neurology, University of San Diego, San Diego, CA, USA
| | - John C Probasco
- Department of Neurology, John Hopkins University School of Medicine, Baltimore, MD, USA
| | - Miguel Ruvalcaba
- Department of Neurology, UC Davis Medical Center (UCDMC), Sacramento, CA, USA
| | - Jonathan D Santoro
- Division of Neurology, Children's Hospital Los Angeles, Los Angeles, CA, USA/Department of Neurology, Keck School of Medicine at University of Southern California, Los Angeles, CA, USA
| | - Kurt Sieloff
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Jeremy Timothy
- Department of Neurology, Wellspan Pediatric Neurology, Manchester, PA, USA
| | - Brian G Weinshenker
- Department of Neurology, Mayo Clinic, Rochester, MN, USA/Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Andrew McKeon
- Department of Neurology, Mayo Clinic, Rochester, MN, USA/Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA/Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, MN, USA/Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA/Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
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Zheng Y, Wei N, Wang J, Dai H, Xu Z. Anti-Hu-related epilepsy diagnosed after surgical management. J Int Med Res 2020; 48:300060520947914. [PMID: 32851899 PMCID: PMC7457660 DOI: 10.1177/0300060520947914] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Autoimmune epilepsy (AE) refers to epilepsy mediated by autoantibodies or immune cells,
and a large proportion of drug-resistant epilepsy cases are classified as AE. AE lacks
standardized management guidelines. At present, little research has been conducted on the
effectiveness of surgical treatment of AE. This paper reports a patient whose surgical
treatment was ineffective before AE was diagnosed and who improved after immunotherapy. A
literature review was conducted to examine the progress of surgical treatment of epilepsy,
the relationship of temporal lobe epilepsy to neuronal antibodies, surgical and prognostic
factors, research progress on the anti-Hu antibody, and treatment of autoimmune
encephalitis to provide a clinical reference.
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Affiliation(s)
- Yongsu Zheng
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Nian Wei
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Jian Wang
- Department of Neurology, Guizhou Aerospace Hospital, Guizhou, China
| | - Hui Dai
- Department of Imaging, Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Zucai Xu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China
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Dade M, Berzero G, Izquierdo C, Giry M, Benazra M, Delattre JY, Psimaras D, Alentorn A. Neurological Syndromes Associated with Anti-GAD Antibodies. Int J Mol Sci 2020; 21:E3701. [PMID: 32456344 PMCID: PMC7279468 DOI: 10.3390/ijms21103701] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [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: 04/27/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 12/11/2022] Open
Abstract
Glutamic acid decarboxylase (GAD) is an intracellular enzyme whose physiologic function is the decarboxylation of glutamate to gamma-aminobutyric acid (GABA), the main inhibitory neurotransmitter within the central nervous system. GAD antibodies (Ab) have been associated with multiple neurological syndromes, including stiff-person syndrome, cerebellar ataxia, and limbic encephalitis, which are all considered to result from reduced GABAergic transmission. The pathogenic role of GAD Ab is still debated, and some evidence suggests that GAD autoimmunity might primarily be cell-mediated. Diagnosis relies on the detection of high titers of GAD Ab in serum and/or in the detection of GAD Ab in the cerebrospinal fluid. Due to the relative rarity of these syndromes, treatment schemes and predictors of response are poorly defined, highlighting the unmet need for multicentric prospective trials in this population. Here, we reviewed the main clinical characteristics of neurological syndromes associated with GAD Ab, focusing on pathophysiologic mechanisms.
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Affiliation(s)
- Maëlle Dade
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Giulia Berzero
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
- Neuroncology Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy
| | - Cristina Izquierdo
- Department of Neuroscience, Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona, 08916 Badalona, Spain;
| | - Marine Giry
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Marion Benazra
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Jean-Yves Delattre
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Dimitri Psimaras
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Agusti Alentorn
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
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Gastaldi M, Mariotto S, Giannoccaro MP, Iorio R, Zoccarato M, Nosadini M, Benedetti L, Casagrande S, Di Filippo M, Valeriani M, Ricci S, Bova S, Arbasino C, Mauri M, Versino M, Vigevano F, Papetti L, Romoli M, Lapucci C, Massa F, Sartori S, Zuliani L, Barilaro A, De Gaspari P, Spagni G, Evoli A, Liguori R, Ferrari S, Marchioni E, Giometto B, Massacesi L, Franciotta D. Subgroup comparison according to clinical phenotype and serostatus in autoimmune encephalitis: a multicenter retrospective study. Eur J Neurol 2020; 27:633-643. [PMID: 31814224 DOI: 10.1111/ene.14139] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 07/31/2019] [Accepted: 12/03/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND PURPOSE Autoimmune encephalitides (AE) include a spectrum of neurological disorders whose diagnosis revolves around the detection of neuronal antibodies (Abs). Consensus-based diagnostic criteria (AE-DC) allow clinic-serological subgrouping of AE, with unclear prognostic implications. The impact of AE-DC on patients' management was studied, focusing on the subgroup of Ab-negative-AE. METHODS This was a retrospective multicenter study on patients fulfilling AE-DC. All patients underwent Ab testing with commercial cell-based assays (CBAs) and, when available, in-house assays (immunohistochemistry, live/fixed CBAs, neuronal cultures) that contributed to defining final categories. Patients were classified as Ab-positive-AE [N-methyl-d-aspartate-receptor encephalitis (NMDAR-E), Ab-positive limbic encephalitis (LE), definite-AE] or Ab-negative-AE (Ab-negative-LE, probable-AE, possible-AE). RESULTS Commercial CBAs detected neuronal Abs in 70/118 (59.3%) patients. Testing 37/48 Ab-negative cases, in-house assays identified Abs in 11 patients (29.7%). A hundred and eighteen patients fulfilled the AE-DC, 81 (68.6%) with Ab-positive-AE (Ab-positive-LE, 40; NMDAR-E, 32; definite-AE, nine) and 37 (31.4%) with Ab-negative-AE (Ab-negative-LE, 17; probable/possible-AE, 20). Clinical phenotypes were similar in Ab-positive-LE versus Ab-negative-LE. Twenty-four/118 (20.3%) patients had tumors, and 19/118 (16.1%) relapsed, regardless of being Ab-positive or Ab-negative. Ab-positive-AE patients were treated earlier than Ab-negative-AE patients (P = 0.045), responded more frequently to treatments (92.3% vs. 65.6%, P < 0.001) and received second-line therapies more often (33.3% vs. 10.8%, P = 0.01). Delays in first-line therapy initiation were associated with poor response (P = 0.022; odds ratio 1.02; confidence interval 1.00-1.04). CONCLUSIONS In-house diagnostics improved Ab detection allowing better patient management but was available in a patient subgroup only, implying possible Ab-positive-AE underestimation. Notwithstanding this limitation, our findings suggest that Ab-negative-AE and Ab-positive-AE patients share similar oncological profiles, warranting appropriate tumor screening. Ab-negative-AE patients risk worse responses due to delayed and less aggressive treatments.
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Affiliation(s)
- M Gastaldi
- Neuroimmunology Laboratory, IRCCS Mondino Foundation, Pavia, Italy
| | - S Mariotto
- Neurology Unit, Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - M P Giannoccaro
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.,UOC Clinica Neurologica, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - R Iorio
- Istituto di Neurologia, Fondazione Policlinico Universitario 'Agostino Gemelli' IRCCS, Rome, Italy.,Universita' Cattolica del Sacro Cuore, Rome, Italy
| | - M Zoccarato
- Ospedale S. Antonio, AULSS Euganea, Padua, Italy.,Neuroimmunology Group, Paediatric Research Institute "Città della Speranza", Padua, Italy
| | - M Nosadini
- Neuroimmunology Group, Paediatric Research Institute "Città della Speranza", Padua, Italy.,Paediatric Neurology and Neurophysiology Unit, Department of Women's and Children's Health, University Hospital of Padua, Padua, Italy
| | - L Benedetti
- IRCCS Ospedale Policlinico S. Martino, Genoa, Italy
| | - S Casagrande
- Neurosciences Department, Florence University, Italy.,Careggi University Hospital, Florence, Italy
| | - M Di Filippo
- Neurology Clinic, S. Maria della Misericordia Hospital, Perugia University, Perugia, Italy
| | - M Valeriani
- Neurology Unit, Bambino Gesù Children Hospital, Rome, Italy
| | - S Ricci
- Ospedale 'Città-di-Castello-e-Branca', Italy
| | - S Bova
- Pediatric Neurology Unit, ASST Fatebenefratelli Sacco, Children Hospital Vittore Buzzi, Milan, Italy
| | | | - M Mauri
- Neurology and Stroke Unit, Insubria University, Varese, Italy
| | - M Versino
- Neurology and Stroke Unit, Insubria University, Varese, Italy
| | - F Vigevano
- Neurology Unit, Bambino Gesù Children Hospital, Rome, Italy
| | - L Papetti
- Neurology Unit, Bambino Gesù Children Hospital, Rome, Italy
| | - M Romoli
- Neurology Clinic, S. Maria della Misericordia Hospital, Perugia University, Perugia, Italy.,Neurology Unit, Rimini "Infermi" Hospital - AUSL Romagna, Rimini, Italy
| | - C Lapucci
- IRCCS Ospedale Policlinico S. Martino, Genoa, Italy
| | - F Massa
- IRCCS Ospedale Policlinico S. Martino, Genoa, Italy
| | - S Sartori
- Neuroimmunology Group, Paediatric Research Institute "Città della Speranza", Padua, Italy.,Paediatric Neurology and Neurophysiology Unit, Department of Women's and Children's Health, University Hospital of Padua, Padua, Italy
| | - L Zuliani
- Neuroimmunology Group, Paediatric Research Institute "Città della Speranza", Padua, Italy.,Neurology Department, Ospedale S. Bortolo, Vicenza, Italy
| | - A Barilaro
- Careggi University Hospital, Florence, Italy
| | - P De Gaspari
- Neuroimmunology Group, Paediatric Research Institute "Città della Speranza", Padua, Italy
| | - G Spagni
- Universita' Cattolica del Sacro Cuore, Rome, Italy
| | - A Evoli
- Istituto di Neurologia, Fondazione Policlinico Universitario 'Agostino Gemelli' IRCCS, Rome, Italy.,Universita' Cattolica del Sacro Cuore, Rome, Italy
| | - R Liguori
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.,UOC Clinica Neurologica, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - S Ferrari
- Neurology Unit, Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - E Marchioni
- Neuroncology Unit, IRCCS Mondino Foundation, Pavia, Italy
| | | | - L Massacesi
- Neurosciences Department, Florence University, Italy.,Careggi University Hospital, Florence, Italy
| | - D Franciotta
- Neuroimmunology Laboratory, IRCCS Mondino Foundation, Pavia, Italy
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9
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Dash D, Pandey S. Movement disorders associated with neuronal antibodies. Acta Neurol Scand 2019; 139:106-117. [PMID: 30338517 DOI: 10.1111/ane.13039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 08/05/2018] [Revised: 10/12/2018] [Accepted: 10/13/2018] [Indexed: 12/28/2022]
Abstract
Movement disorders are one of the common clinical features of neurological disease associated with neuronal antibodies which is a group of potentially reversible disorder. They can present with hypokinetic or hyperkinetic types of involuntary movements and may have other associated neurological symptoms. The spectrum of abnormal movements associated with neuronal antibodies is widening. Some specific phenomenology of movement disorders are likely to give clue about the type of antibody, for instance, presence of paroxysmal dystonia (facio-brachial dystonic seizures) are a pointer toward presence of LGI-1 antibodies, and orofacial lingual dyskinesia is associated with NMDAR associated encephalitis. The presence of specific type of movement disorder allows high suspicion of testing of certain specific type of antibodies. In this review, we have discussed the various antibodies and the spectrum of movement disorder associated with them, highlighting if any distinct movement disorder allows the clinician to suspect type of antibody in a certain clinical context. We have also reviewed the treatment of the movement disorder associated with the neuronal antibodies. Physicians should have high index of suspicion of these disorders, as early institution of treatment options can lead to better outcome.
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Affiliation(s)
- Deepa Dash
- Department of Neurology; All India Institute of Medical Sciences; New Delhi India
| | - Sanjay Pandey
- Department of Neurology; Govind Ballabh Pant Postgraduate Institute of Medical Education and Research; New Delhi India
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10
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Swayne A, Tjoa L, Broadley S, Dionisio S, Gillis D, Jacobson L, Woodhall MR, McNabb A, Schweitzer D, Tsang B, Vincent A, Irani SR, Wong R, Waters P, Blum S. Antiglycine receptor antibody related disease: a case series and literature review. Eur J Neurol 2018; 25:1290-1298. [PMID: 29904974 PMCID: PMC6282944 DOI: 10.1111/ene.13721] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/23/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE Antibodies to glycine receptors (GlyR-Abs) were first defined in progressive encephalopathy with rigidity and myoclonus (PERM) but were subsequently identified in other clinical presentations. Our aim was to assess the clinical associations of all patients identified with GlyR-Abs in Queensland, Australia, between April 2014 and May 2017 and to compare these to cases reported in the literature. METHODS A literature review identified the clinical features of all published GlyR-Ab-positive cases through online databases. A case series was undertaken via collection of clinical information from all patients diagnosed or known to immunology, pathology or neurological services in Queensland during the study period of 3 years. RESULTS In all, 187 GlyR-Ab-positive cases were identified in the literature. The majority (47.6%) had PERM, 22.4% had epilepsy, but the remaining 30% included mixed phenotypes consisting of cerebellar ataxia, movement disorders, demyelination and encephalitis/cognitive dysfunction. By contrast, in our series of 14 cases, eight had clinical presentations consistent with seizures and epilepsy and only three cases had classical features of PERM. There was one case each of global fatiguable weakness with sustained clonus, laryngeal dystonia and movement disorder with hemiballismus and tics. The rate of response to immune therapy was similar in all groups. CONCLUSION Antibodies to glycine receptors are linked to a spectrum of neurological disease. The results of the literature review and our case series suggest a greater relationship between GlyR-Abs and epilepsy than previously reported.
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Affiliation(s)
- A Swayne
- Princess Alexandra Hospital Brisbane Australia, Wooloongabba, QLD, Australia.,School of Medicine, University of Queensland, Herston, QLD, Australia.,Mater Centre for Neuroscience, South Brisbane, QLD, Australia
| | - L Tjoa
- Mater Centre for Neuroscience, South Brisbane, QLD, Australia
| | - S Broadley
- Gold Coast University Hospital, Griffith University Medical School, Griffith University, QLD, Australia
| | - S Dionisio
- Princess Alexandra Hospital Brisbane Australia, Wooloongabba, QLD, Australia.,Mater Centre for Neuroscience, South Brisbane, QLD, Australia
| | - D Gillis
- Pathology Queensland, Brisbane, QLD, Australia.,Sunshine Coast University Hospital, Birtinya, QLD, Australia
| | - L Jacobson
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - M R Woodhall
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - A McNabb
- Cairns Base Hospital, Cairns, QLD, Australia
| | - D Schweitzer
- Mater Centre for Neuroscience, South Brisbane, QLD, Australia
| | - B Tsang
- Sunshine Coast University Hospital, Birtinya, QLD, Australia
| | - A Vincent
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - S R Irani
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - R Wong
- Princess Alexandra Hospital Brisbane Australia, Wooloongabba, QLD, Australia.,Pathology Queensland, Brisbane, QLD, Australia
| | - P Waters
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - S Blum
- Princess Alexandra Hospital Brisbane Australia, Wooloongabba, QLD, Australia.,School of Medicine, University of Queensland, Herston, QLD, Australia.,Mater Centre for Neuroscience, South Brisbane, QLD, Australia
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11
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Balint B, Vincent A, Meinck HM, Irani SR, Bhatia KP. Movement disorders with neuronal antibodies: syndromic approach, genetic parallels and pathophysiology. Brain 2018; 141:13-36. [PMID: 29053777 PMCID: PMC5888977 DOI: 10.1093/brain/awx189] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [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: 03/01/2017] [Revised: 05/10/2017] [Accepted: 06/13/2017] [Indexed: 01/17/2023] Open
Abstract
Movement disorders are a prominent and common feature in many autoantibody-associated neurological diseases, a group of potentially treatable conditions that can mimic infectious, metabolic or neurodegenerative disease. Certain movement disorders are likely to associate with certain autoantibodies; for example, the characteristic dyskinesias, chorea and dystonia associated with NMDAR antibodies, stiff person spectrum disorders with GAD, glycine receptor, amphiphysin or DPPX antibodies, specific paroxysmal dystonias with LGI1 antibodies, and cerebellar ataxia with various anti-neuronal antibodies. There are also less-recognized movement disorder presentations of antibody-related disease, and a considerable overlap between the clinical phenotypes and the associated antibody spectra. In this review, we first describe the antibodies associated with each syndrome, highlight distinctive clinical or radiological 'red flags', and suggest a syndromic approach based on the predominant movement disorder presentation, age, and associated features. We then examine the underlying immunopathophysiology, which may guide treatment decisions in these neuroimmunological disorders, and highlight the exceptional interface between neuronal antibodies and neurodegeneration, such as the tauopathy associated with IgLON5 antibodies. Moreover, we elaborate the emerging pathophysiological parallels between genetic movement disorders and immunological conditions, with proteins being either affected by mutations or targeted by autoantibodies. Hereditary hyperekplexia, for example, is caused by mutations of the alpha subunit of the glycine receptor leading to an infantile-onset disorder with exaggerated startle and stiffness, whereas antibodies targeting glycine receptors can induce acquired hyperekplexia. The spectrum of such immunological and genetic analogies also includes cerebellar ataxias and some encephalopathies. Lastly, we discuss how these pathophysiological considerations could reflect on possible future directions regarding antigen-specific immunotherapies or targeting the pathophysiological cascades downstream of the antibody effects.
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Affiliation(s)
- Bettina Balint
- Sobell Department of Motor Neuroscience and Movement Disorders UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
- Department of Neurology, University Hospital, Heidelberg, Germany
- Neuroimmunology Group, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, UK
| | - Angela Vincent
- Neuroimmunology Group, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, UK
| | | | - Sarosh R Irani
- Neuroimmunology Group, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, UK
| | - Kailash P Bhatia
- Sobell Department of Motor Neuroscience and Movement Disorders UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK
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12
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Abstract
In the past few years, many autoimmune encephalitides have been identified, with specific clinical syndromes and associated antibodies against neuronal surface antigens. There is compelling evidence that many of these antibodies are pathogenic and most of these encephalitides are highly responsive to immunotherapies. The clinical spectra of some of these antibody-mediated syndromes, especially those reported in only a few patients, are evolving. Others, such as anti-N-methyl-D-aspartate (NMDA) receptor encephalitis, are well characterized. Diagnosis involves recognizing the specific syndromes and identifying the antibody in a patient's cerebrospinal fluid (CSF) and/or serum. These syndromes are associated with variable abnormalities in CSF, magnetic resonance imaging, and electroencephalography. Treatment is often multidisciplinary and should be focused upon neutralizing the effects of antibodies and eliminating their source. Overlapping disorders have been noted, with some patients having more than one neurologic autoimmune disease. In other patients, viral infections such as herpes simplex virus encephalitis trigger robust antineuronal autoimmune responses.
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Affiliation(s)
- Jenny J. Linnoila
- Department of Neurology, Massachusetts General Hospital, Boston, Massachussetts
| | - Myrna R. Rosenfeld
- Department of Neurology, Hospital Clínic /Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centre de Recerca Biomèdica CELLEX, Lab Neuroimmonologia P3A, Barcelona, Spain
- Department of Neurology, University of Pennsylvania; Philadelphia, Pennsylvania
| | - Josep Dalmau
- Centre de Recerca Biomèdica CELLEX, Lab Neuroimmonologia P3A, Barcelona, Spain
- Department of Neurology, University of Pennsylvania; Philadelphia, Pennsylvania
- Institució Catalana de Recerca i Estudis Avançats (ICREA) at Institut d’Investigació Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain
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