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Trivedi RR, Archambault AS, Pavlak C, Gastaldi M, Cantoni C, Ghezzi L, Cross AH, Miller TM, Wu GF. Prevalence of anti-myelin oligodendrocyte glycoprotein antibodies across neuroinflammatory and neurodegenerative diseases. J Neurol Sci 2024; 461:123041. [PMID: 38744216 DOI: 10.1016/j.jns.2024.123041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/14/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
Inflammatory central nervous system (CNS) diseases, such as multiple sclerosis (MS) and myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD), are characterized by humoral immune abnormalities. Anti-MOG antibodies are not specific to MOGAD, with their presence described in MS. Autoantibodies may also be present and play a role in various neurodegenerative diseases. Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease driven by motor neuron dysfunction. While immune involvement in ALS has been recognized, the presence of antibodies targeting CNS myelin antigens has not been established. We aimed to establish a live cell-based assay for quantification of serum anti-MOG IgG1 in patients with CNS diseases, including MS and ALS. In total, 771 serum samples from the John L. Trotter MS Center and the Northeast ALS Consortium were examined using a live cell-based assay for detection of anti-MOG IgG1. Samples from three cohorts were tested in blinded fashion: healthy control (HC) subjects, patients with clinically diagnosed MOGAD, and an experimental group of ALS and MS patients. All samples from established MOGAD cases were positive for anti-MOG antibodies, while all HC samples were negative. Anti-MOG IgG1 was detected in 65 of 658 samples (9.9%) from MS subjects and 4 of 108 (3.7%) samples from ALS subjects. The presence of serum anti-MOG IgG1 in MS and ALS patients raises questions about the contribution of these antibodies to disease pathophysiology as well as accuracy of diagnostic approaches for CNS inflammatory diseases.
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Affiliation(s)
- Ritu R Trivedi
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America
| | - Angela S Archambault
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America
| | - Clarice Pavlak
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America
| | - Matteo Gastaldi
- Fondazione "Istituto Neurologico Casimiro Mondino" Pavia, 27100, Italy
| | - Claudia Cantoni
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America
| | - Laura Ghezzi
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America
| | - Anne H Cross
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America
| | - Timothy M Miller
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America
| | - Gregory F Wu
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, United States of America; Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO 63110, United States of America; Neurology service, Veterans Affairs Saint Louis Health Care System, Saint Louis, MO 63106, United States of America.
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2
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Jeyakumar N, Lerch M, Dale RC, Ramanathan S. MOG antibody-associated optic neuritis. Eye (Lond) 2024:10.1038/s41433-024-03108-y. [PMID: 38783085 DOI: 10.1038/s41433-024-03108-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/04/2024] [Accepted: 04/19/2024] [Indexed: 05/25/2024] Open
Abstract
Myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD) is a demyelinating disorder, distinct from multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD). MOGAD most frequently presents with optic neuritis (MOG-ON), often with characteristic clinical and radiological features. Bilateral involvement, disc swelling clinically and radiologically, and longitudinally extensive optic nerve hyperintensity with associated optic perineuritis on MRI are key characteristics that can help distinguish MOG-ON from optic neuritis due to other aetiologies. The detection of serum MOG immunoglobulin G utilising a live cell-based assay in a patient with a compatible clinical phenotype is highly specific for the diagnosis of MOGAD. This review will highlight the key clinical and radiological features which expedite diagnosis, as well as ancillary investigations such as visual fields, visual evoked potentials and cerebrospinal fluid analysis, which may be less discriminatory. Optical coherence tomography can identify optic nerve swelling acutely, and atrophy chronically, and may transpire to have utility as a diagnostic and prognostic biomarker. MOG-ON appears to be largely responsive to corticosteroids, which are often the mainstay of acute management. However, relapses are common in patients in whom follow-up is prolonged, often in the context of early or rapid corticosteroid tapering. Establishing optimal acute therapy, the role of maintenance steroid-sparing immunotherapy for long-term relapse prevention, and identifying predictors of relapsing disease remain key research priorities in MOG-ON.
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Affiliation(s)
- Niroshan Jeyakumar
- Translational Neuroimmunology Group, Kids Neuroscience Centre and Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
- Department of Neurology, Westmead Hospital, Sydney, NSW, Australia
| | - Magdalena Lerch
- Translational Neuroimmunology Group, Kids Neuroscience Centre and Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Russell C Dale
- Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
- Clinical Neuroimmunology Group, Kids Neuroscience Centre and Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
- TY Nelson Department of Neurology, Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Sudarshini Ramanathan
- Translational Neuroimmunology Group, Kids Neuroscience Centre and Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.
- Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.
- Department of Neurology, Concord Hospital, Sydney, NSW, Australia.
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3
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Liyanage G, Trewin BP, Lopez JA, Andersen J, Tea F, Merheb V, Nguyen K, Lee FXZ, Fabis-Pedrini MJ, Zou A, Buckland A, Fok A, Barnett MH, Reddel SW, Marignier R, El Hajj A, Monif M, van der Walt A, Lechner-Scott J, Kermode AG, Kalincik T, Broadley SA, Dale RC, Ramanathan S, Brilot F. The MOG antibody non-P42 epitope is predictive of a relapsing course in MOG antibody-associated disease. J Neurol Neurosurg Psychiatry 2024; 95:544-553. [PMID: 38290838 PMCID: PMC11103329 DOI: 10.1136/jnnp-2023-332851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/07/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND Myelin oligodendrocyte glycoprotein (MOG) IgG seropositivity is a prerequisite for MOG antibody-associated disease (MOGAD) diagnosis. While a significant proportion of patients experience a relapsing disease, there is currently no biomarker predictive of disease course. We aim to determine whether MOG-IgG epitopes can predict a relapsing course in MOGAD patients. METHODS MOG-IgG-seropositive confirmed adult MOGAD patients were included (n=202). Serum MOG-IgG and epitope binding were determined by validated flow cytometry live cell-based assays. Associations between epitopes, disease course, clinical phenotype, Expanded Disability Status Scale and Visual Functional System Score at onset and last review were evaluated. RESULTS Of 202 MOGAD patients, 150 (74%) patients had MOG-IgG that recognised the immunodominant proline42 (P42) epitope and 115 (57%) recognised histidine103/serine104 (H103/S104). Fifty-two (26%) patients had non-P42 MOG-IgG and showed an increased risk of a relapsing course (HR 1.7; 95% CI 1.15 to 2.60, p=0.009). Relapse-freedom was shorter in patients with non-P42 MOG-IgG (p=0.0079). Non-P42 MOG-IgG epitope status remained unchanged from onset throughout the disease course and was a strong predictor of a relapsing course in patients with unilateral optic neuritis (HR 2.7, 95% CI 1.06 to 6.98, p=0.038), with high specificity (95%, 95% CI 77% to 100%) and positive predictive value (85%, 95% CI 45% to 98%). CONCLUSIONS Non-P42 MOG-IgG predicts a relapsing course in a significant subgroup of MOGAD patients. Patients with unilateral optic neuritis, the most frequent MOGAD phenotype, can reliably be tested at onset, regardless of age and sex. Early detection and specialised management in these patients could minimise disability and improve long-term outcomes.
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Affiliation(s)
- Ganesha Liyanage
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Benjamin P Trewin
- Translational Neuroimmunology Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Joseph A Lopez
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Jane Andersen
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Fiona Tea
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Vera Merheb
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Kristy Nguyen
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Fiona X Z Lee
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Marzena J Fabis-Pedrini
- Centre for Neuromuscular and Neurological Disorders, Perron Institute for Neurological and Translational Science, The University of Western Australia, Sir Charles Gairdner Hospital, QEII Medical Centre, Nedlands, Western Australia, Australia
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Murdoch, Western Australia, Australia
| | - Alicia Zou
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Ali Buckland
- Centre for Neuromuscular and Neurological Disorders, Perron Institute for Neurological and Translational Science, The University of Western Australia, Sir Charles Gairdner Hospital, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Anthony Fok
- Department of Neurology, Monash Health, Clayton, Victoria, Australia
| | - Michael H Barnett
- Brain and Mind Centre, The University of Sydney, Camperdown, New South Wales, Australia
| | - Stephen W Reddel
- Brain and Mind Centre, The University of Sydney, Camperdown, New South Wales, Australia
- Department of Neurology, Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| | - Romain Marignier
- Service de Neurologie, Sclérose en Plaques, Pathologies de la Myéline et Neuro Inflammation, and Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer and Centre des Neurosciences de Lyon, INSERM 1028 et CNRS UMR5292, Lyon, France
- Université Claude Bernard Lyon 1, Lyon, France
| | - Aseel El Hajj
- Service de Neurologie, Sclérose en Plaques, Pathologies de la Myéline et Neuro Inflammation, and Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer and Centre des Neurosciences de Lyon, INSERM 1028 et CNRS UMR5292, Lyon, France
- Université Claude Bernard Lyon 1, Lyon, France
| | - Mastura Monif
- Multiple Sclerosis and Neuroimmunology Research Groups, Department of Neuroscience, Monash University, Clayton, Victoria, Australia
| | - Anneke van der Walt
- Multiple Sclerosis and Neuroimmunology Research Groups, Department of Neuroscience, Monash University, Clayton, Victoria, Australia
| | - Jeannette Lechner-Scott
- Department of Neurology, John Hunter Hospital, Newcastle, New South Wales, Australia
- Hunter Medical Research Institute, The University of Newcastle, New Lambton Heights, New South Wales, Australia
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Allan G Kermode
- Centre for Neuromuscular and Neurological Disorders, Perron Institute for Neurological and Translational Science, The University of Western Australia, Sir Charles Gairdner Hospital, QEII Medical Centre, Nedlands, Western Australia, Australia
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Western Australia, Australia
| | - Tomas Kalincik
- Clinical Outcomes Research Unit (CORe), Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Neuroimmunology Centre, Department of Neurology, The Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Simon A Broadley
- School of Medicine and Dentistry, Griffith University, Gold Coast, Queensland, Australia
- Department of Neurology, Gold Coast University Hospital, Southport, Queensland, Australia
| | - Russell C Dale
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Clinical Neuroimmunology Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Sudarshini Ramanathan
- Translational Neuroimmunology Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Brain and Mind Centre, The University of Sydney, Camperdown, New South Wales, Australia
- Department of Neurology, Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| | - Fabienne Brilot
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, New South Wales, Australia
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Brain and Mind Centre, The University of Sydney, Camperdown, New South Wales, Australia
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4
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Nowacka B, Lubiński W, Kaźmierczak B. Myelin Oligodendrocyte Glycoprotein (MOG) Antibody-Associated Optic Neuritis - A Case Report and Literature Review. Int Med Case Rep J 2024; 17:391-399. [PMID: 38708316 PMCID: PMC11069371 DOI: 10.2147/imcrj.s459799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/17/2024] [Indexed: 05/07/2024] Open
Abstract
Background Myelin oligodendrocyte glycoprotein (MOG)-IgG-associated optic neuritis (ON) is a new subset of demyelinating optic neuropathy. Case Report This study presents a case of a 49-year-old woman with MOG-IgG-positive ON, who reported to the ophthalmic emergency room with decreased visual acuity, retrobulbar pain and red color desaturation in her left eye. Abnormalities in the ophthalmological examination were: decreased Snellen's distance best-corrected visual acuity (DBCVA) to 0.04 in her left eye, slightly elevated optic nerve disc in the left eye confirmed by increased peripapillary retinal nerve fiber layer (RNFL) thickness in SD-OCT, abnormalities in pattern visual evoked potentials in both eyes. The preliminary diagnosis was demyelinating optic neuritis left for observation. However, two weeks after the first symptoms, treatment with intravenous methylprednisolone was initiated due to a decrease in DBCVA to no light perception. Intravenous steroids were followed by oral prednisone and later also by mycophenolate mofetil. The patient experienced slow but gradual improvement. One year after the occurrence of the initial symptoms, DBCVA was 0.5 in the left eye, however partial atrophy of the optic nerve developed, confirmed by macular ganglion cell layer (GCL) thickness and RNFL atrophy in SD-OCT, while visual pathway function improved. Conclusion All atypical cases of ON should be primarily considered for cell-based assays. MOG-IgG-positive ON usually responds well to steroid drugs and delaying immunosuppressive treatment may cause irreversible damage to the optic nerve.
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Affiliation(s)
- Barbara Nowacka
- 2nd Department of Ophthalmology, Pomeranian Medical University, Szczecin, Poland
| | - Wojciech Lubiński
- 2nd Department of Ophthalmology, Pomeranian Medical University, Szczecin, Poland
| | - Beata Kaźmierczak
- 2nd Department of Ophthalmology, Pomeranian Medical University, Szczecin, Poland
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5
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Fisher KS, Illner A, Kannan V. Pediatric neuroinflammatory diseases in the intensive care unit. Semin Pediatr Neurol 2024; 49:101118. [PMID: 38677797 DOI: 10.1016/j.spen.2024.101118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/12/2024] [Accepted: 01/28/2024] [Indexed: 04/29/2024]
Abstract
Inflammatory disorders of the central nervous system (CNS) include a wide spectrum of autoimmune, autoinflammatory, and paraneoplastic diseases. While many affected patients require acute hospital admission, a subset may present with severe neurological symptoms requiring intensive care unit (ICU) escalation due to disordered consciousness, respiratory failure, status epilepticus, intracranial hypertension, and/or severe autonomic dysregulation.
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Affiliation(s)
- Kristen S Fisher
- Department of Pediatrics, Section of Neurology and Developmental Neuroscience, Baylor College of Medicine, Houston, Texas.
| | - Anna Illner
- Department of Radiology, Baylor College of Medicine at Texas Children's Hospital, Houston, Texas
| | - Varun Kannan
- Division of Pediatric Neurology, Emory University School of Medicine, Children's Healthcare of Atlanta, Atlanta, Georgia
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6
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Afzali AM, Nirschl L, Sie C, Pfaller M, Ulianov O, Hassler T, Federle C, Petrozziello E, Kalluri SR, Chen HH, Tyystjärvi S, Muschaweckh A, Lammens K, Delbridge C, Büttner A, Steiger K, Seyhan G, Ottersen OP, Öllinger R, Rad R, Jarosch S, Straub A, Mühlbauer A, Grassmann S, Hemmer B, Böttcher JP, Wagner I, Kreutzfeldt M, Merkler D, Pardàs IB, Schmidt Supprian M, Buchholz VR, Heink S, Busch DH, Klein L, Korn T. B cells orchestrate tolerance to the neuromyelitis optica autoantigen AQP4. Nature 2024; 627:407-415. [PMID: 38383779 PMCID: PMC10937377 DOI: 10.1038/s41586-024-07079-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 01/16/2024] [Indexed: 02/23/2024]
Abstract
Neuromyelitis optica is a paradigmatic autoimmune disease of the central nervous system, in which the water-channel protein AQP4 is the target antigen1. The immunopathology in neuromyelitis optica is largely driven by autoantibodies to AQP42. However, the T cell response that is required for the generation of these anti-AQP4 antibodies is not well understood. Here we show that B cells endogenously express AQP4 in response to activation with anti-CD40 and IL-21 and are able to present their endogenous AQP4 to T cells with an AQP4-specific T cell receptor (TCR). A population of thymic B cells emulates a CD40-stimulated B cell transcriptome, including AQP4 (in mice and humans), and efficiently purges the thymic TCR repertoire of AQP4-reactive clones. Genetic ablation of Aqp4 in B cells rescues AQP4-specific TCRs despite sufficient expression of AQP4 in medullary thymic epithelial cells, and B-cell-conditional AQP4-deficient mice are fully competent to raise AQP4-specific antibodies in productive germinal-centre responses. Thus, the negative selection of AQP4-specific thymocytes is dependent on the expression and presentation of AQP4 by thymic B cells. As AQP4 is expressed in B cells in a CD40-dependent (but not AIRE-dependent) manner, we propose that thymic B cells might tolerize against a group of germinal-centre-associated antigens, including disease-relevant autoantigens such as AQP4.
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Affiliation(s)
- Ali Maisam Afzali
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
- Department of Neurology, Technical University of Munich School of Medicine and Health, Munich, Germany
- Munich Cluster for Systems Neurology, Munich, Germany
| | - Lucy Nirschl
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Christopher Sie
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Monika Pfaller
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Oleksii Ulianov
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Tobias Hassler
- Biomedical Center (BMC), Institute for Immunology, Faculty of Medicine, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Christine Federle
- Biomedical Center (BMC), Institute for Immunology, Faculty of Medicine, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Elisabetta Petrozziello
- Biomedical Center (BMC), Institute for Immunology, Faculty of Medicine, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Sudhakar Reddy Kalluri
- Department of Neurology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Hsin Hsiang Chen
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Sofia Tyystjärvi
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Andreas Muschaweckh
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Katja Lammens
- Department of Biochemistry at the Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | - Claire Delbridge
- Institute of Pathology, Technical University of Munich School of Medicine and Health, Munich, Germany
- Department of Neuropathology, Institute of Pathology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Andreas Büttner
- Institute of Forensic Medicine, Rostock University Medical Center, Rostock, Germany
| | - Katja Steiger
- Institute of Pathology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Gönül Seyhan
- Institute for Experimental Hematology, TranslaTUM Cancer Center, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Ole Petter Ottersen
- Division of Anatomy, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Rupert Öllinger
- Institute of Molecular Oncology and Functional Genomics, TranslaTUM Cancer Center, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Roland Rad
- Institute of Molecular Oncology and Functional Genomics, TranslaTUM Cancer Center, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Sebastian Jarosch
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Adrian Straub
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Anton Mühlbauer
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Simon Grassmann
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Bernhard Hemmer
- Department of Neurology, Technical University of Munich School of Medicine and Health, Munich, Germany
- Munich Cluster for Systems Neurology, Munich, Germany
| | - Jan P Böttcher
- Institute of Molecular Immunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Ingrid Wagner
- Department of Pathology and Immunology, Division of Clinical Pathology, Geneva Faculty of Medicine, Centre Médical Universitaire, Geneva, Switzerland
| | - Mario Kreutzfeldt
- Department of Pathology and Immunology, Division of Clinical Pathology, Geneva Faculty of Medicine, Centre Médical Universitaire, Geneva, Switzerland
| | - Doron Merkler
- Department of Pathology and Immunology, Division of Clinical Pathology, Geneva Faculty of Medicine, Centre Médical Universitaire, Geneva, Switzerland
| | | | - Marc Schmidt Supprian
- Institute for Experimental Hematology, TranslaTUM Cancer Center, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Veit R Buchholz
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Sylvia Heink
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany
| | - Dirk H Busch
- Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich School of Medicine and Health, Munich, Germany
- German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Ludger Klein
- Biomedical Center (BMC), Institute for Immunology, Faculty of Medicine, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Thomas Korn
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine and Health, Munich, Germany.
- Department of Neurology, Technical University of Munich School of Medicine and Health, Munich, Germany.
- Munich Cluster for Systems Neurology, Munich, Germany.
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7
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Yandamuri SS, Filipek B, Lele N, Cohen I, Bennett JL, Nowak RJ, Sotirchos ES, Longbrake EE, Mace EM, O’Connor KC. A Noncanonical CD56dimCD16dim/- NK Cell Subset Indicative of Prior Cytotoxic Activity Is Elevated in Patients with Autoantibody-Mediated Neurologic Diseases. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:785-800. [PMID: 38251887 PMCID: PMC10932911 DOI: 10.4049/jimmunol.2300015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 01/02/2024] [Indexed: 01/23/2024]
Abstract
Neuromyelitis optica spectrum disorder (NMOSD), myelin oligodendrocyte glycoprotein Ab disease, and autoimmune myasthenia gravis (MG) are autoantibody-mediated neurologic conditions where autoantibodies can induce Ab-dependent cellular cytotoxicity (ADCC), a NK cell-mediated effector function. However, whether ADCC is a pathogenic mechanism in patients with these conditions has not been confirmed. We sought to characterize circulatory NK cells using functional assays, phenotyping, and transcriptomics to elucidate their role in pathology. NK cells from NMOSD patients and MG patients with elevated disease burden exhibited reduced ADCC and CD56dimCD16hi NK cells, along with an elevated frequency of CD56dimCD16dim/- NK cells. We determined that ADCC induces a similar phenotypic shift in vitro. Bulk RNA sequencing distinguished the CD56dimCD16dim/- population from the canonical CD56dimCD16hi cytotoxic and CD56hiCD16- immunomodulatory subsets, as well as CD56hiCD16+ NK cells. Multiparameter immunophenotyping of NK cell markers, functional proteins, and receptors similarly showed that the CD56dimCD16dim/- subset exhibits a unique profile while still maintaining expression of characteristic NK markers CD56, CD94, and NKp44. Notably, expression of perforin and granzyme is reduced in comparison with CD56dimCD16hi NK cells. Moreover, they exhibit elevated trogocytosis capability, HLA-DR expression, and many chemokine receptors, including CCR7. In contrast with NMOSD and MG, myelin oligodendrocyte glycoprotein Ab disease NK cells did not exhibit functional, phenotypic, or transcriptomic perturbations. In summary, CD56dimCD16dim/- NK cells are a distinct peripheral blood immune cell population in humans elevated upon prior cytotoxic activity by the CD56dimCD16hi NK cell subset. The elevation of this subset in NMOSD and MG patients suggests prior ADCC activity.
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Affiliation(s)
- Soumya S. Yandamuri
- Department of Neurology, Yale School of Medicine; New Haven, CT, United States
- Department of Immunobiology, Yale School of Medicine; New Haven, CT, United States
| | - Beata Filipek
- Department of Neurology, Yale School of Medicine; New Haven, CT, United States
- Department of Immunobiology, Yale School of Medicine; New Haven, CT, United States
- Department of Pharmaceutical Microbiology and Biochemistry, Medical University of Lodz; Lodz, Poland
| | - Nikhil Lele
- Department of Neurology, Yale School of Medicine; New Haven, CT, United States
| | - Inessa Cohen
- Department of Neurology, Yale School of Medicine; New Haven, CT, United States
| | - Jeffrey L. Bennett
- Departments of Neurology and Ophthalmology, Programs in Neuroscience and Immunology, University of Colorado School of Medicine, Anschutz Medical Campus; Aurora, CO, United States
| | - Richard J. Nowak
- Department of Neurology, Yale School of Medicine; New Haven, CT, United States
| | - Elias S. Sotirchos
- Department of Neurology, Johns Hopkins University; Baltimore, MD, United States
| | - Erin E. Longbrake
- Department of Neurology, Yale School of Medicine; New Haven, CT, United States
| | - Emily M. Mace
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center; New York, NY, United States
| | - Kevin C. O’Connor
- Department of Neurology, Yale School of Medicine; New Haven, CT, United States
- Department of Immunobiology, Yale School of Medicine; New Haven, CT, United States
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8
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Mirmosayyeb O, Ghaffary EM, Dehghan MS, Ghoshouni H, Bagherieh S, Barzegar M, Shaygannejad V. Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease and COVID-19: A Systematic Review. J Cent Nerv Syst Dis 2023; 15:11795735231167869. [PMID: 37008248 PMCID: PMC10063869 DOI: 10.1177/11795735231167869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Background Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is an uncommon neurological disease affecting the central nervous system (CNS). Numerous neurological disorders, including multiple sclerosis (MS), neuromyelitis optica spectrum disorder (NMOSD), acute transverse myelitis (ATM), and MOGAD, have been reported following the COVID-19 infection during the current COVID-19 pandemic. On the other hand, it has been suggested that patients with MOGAD may be at greater risk for infection (particularly in the current pandemic). Objective In this systematic review, we gathered separately 1) MOGAD cases following COVID-19 infection as well as 2) clinical course of patients with MOGAD infected with COVID-19 based on case reports/series. Methods 329 articles were collected from 4 databases. These articles were conducted from inception to March 1st, 2022. Results Following the screening, exclusion criteria were followed and eventually, 22 studies were included. In 18 studies, a mean ± SD time interval of 18.6 ± 14.9 days was observed between infection with COVID-19 and the onset of MOGAD symptoms. Symptoms were partially or completely recovered in a mean of 67 days of follow-up. Among 4 studies on MOGAD patients, the hospitalization rate was 25%, and 15% of patients were hospitalized in the intensive care unit (ICU). Conclusion Our systematic review demonstrated that following COVID-19 infection, there is a rare possibility of contracting MOGAD. Moreover, there is no clear consensus on the susceptibility of MOGAD patients to severe COVID-19. However, obtaining deterministic results requires studies with a larger sample size.
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Affiliation(s)
- Omid Mirmosayyeb
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elham Moases Ghaffary
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad S. Dehghan
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamed Ghoshouni
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sara Bagherieh
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahdi Barzegar
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Vahid Shaygannejad
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Vahid Shaygannejad, Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Kashani Street, Kashani Hospital, Isfahan 81746 73461, Iran.
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Remlinger J, Bagnoud M, Meli I, Massy M, Linington C, Chan A, Bennett JL, Hoepner R, Enzmann V, Salmen A. Modelling MOG antibody-associated disorder and neuromyelitis optica spectrum disorder in animal models: Spinal cord manifestations. Mult Scler Relat Disord 2023; 78:104892. [PMID: 37499337 DOI: 10.1016/j.msard.2023.104892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/18/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023]
Abstract
Antibodies to myelin oligodendrocyte glycoprotein (MOG-IgG) or aquaporin 4 (AQP4-IgG) are associated with CNS inflammatory disorders. We directly compared MOG35-55-induced experimental autoimmune encephalomyelitis exacerbated by MOG- and AQP4-IgG (versus isotype IgG, Iso-IgG). Disease severity was highest after MOG-IgG application. MOG- and AQP4-IgG administration increased disease incidence compared to Iso-IgG. Inflammatory lesions appeared earlier and with distinct localizations after AQP4-IgG administration. AQP4 intensity was more reduced after AQP4- than MOG-IgG administration at acute disease phase. The described models are suitable for comparative analyses of pathological features associated with MOG- and AQP4-IgG and the investigation of therapeutic interventions.
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Affiliation(s)
- Jana Remlinger
- Department of Neurology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, 3010, Switzerland
| | - Maud Bagnoud
- Department of Neurology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland
| | - Ivo Meli
- Department of Neurology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland
| | - Marine Massy
- Department of Neurology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, 3010, Switzerland
| | - Christopher Linington
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, G12 8TA, UK
| | - Andrew Chan
- Department of Neurology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland
| | - Jeffrey L Bennett
- Departments of Neurology and Ophthalmology, Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States of America
| | - Robert Hoepner
- Department of Neurology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland
| | - Volker Enzmann
- Department of Ophthalmology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland
| | - Anke Salmen
- Department of Neurology, Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Bern, 3010, Switzerland.
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10
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Hor JY, Fujihara K. Epidemiology of myelin oligodendrocyte glycoprotein antibody-associated disease: a review of prevalence and incidence worldwide. Front Neurol 2023; 14:1260358. [PMID: 37789888 PMCID: PMC10542411 DOI: 10.3389/fneur.2023.1260358] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/15/2023] [Indexed: 10/05/2023] Open
Abstract
Myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD) is an inflammatory demyelinating disease of the central nervous system (CNS) with the presence of conformation-sensitive antibodies against MOG. The spectrum of MOGAD includes monophasic/relapsing optic neuritis, myelitis, neuromyelitis optica spectrum disorder (NMOSD) phenotype without aquaporin 4 (AQP4) antibodies, acute/multiphasic demyelinating encephalomyelitis (ADEM/MDEM)-like presentation, and brainstem and cerebral cortical encephalitis. There is no apparent female preponderance in MOGAD, and MOGAD can onset in all age groups (age at onset is approximately 30 years on average, and approximately 30% of cases are in the pediatric age group). While prevalence and incidence data have been available for AQP4+ NMOSD globally, such data are only beginning to accumulate for MOGAD. We reviewed the currently available data from population-based MOGAD studies conducted around the world: three studies in Europe, three in Asia, and one joint study in the Americas. The prevalence of MOGAD is approximately 1.3-2.5/100,000, and the annual incidence is approximately 3.4-4.8 per million. Among White people, the prevalence of MOGAD appears to be slightly higher than that of AQP4+ NMOSD. No obvious latitude gradient was observed in the Japanese nationwide survey. The data available so far showed no obvious racial preponderance or strong HLA associations in MOGAD. However, precedent infection was reported in approximately 20-40% of MOGAD cases, and this is worthy of further investigation. Co-existing autoimmune disorders are less common in MOGAD than in AQP4+ NMOSD, but NMDAR antibodies may occasionally be positive in patients with MOGAD. More population-based studies in different populations and regions are useful to further inform the epidemiology of this disease.
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Affiliation(s)
- Jyh Yung Hor
- Department of Neurology, Penang General Hospital, Penang, Malaysia
| | - Kazuo Fujihara
- Department of Multiple Sclerosis Therapeutics, Fukushima Medical University School of Medicine, Koriyama, Japan
- Multiple Sclerosis and Neuromyelitis Optica Center, Southern TOHOKU Research Institute for Neuroscience, Koriyama, Japan
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11
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Remlinger J, Bagnoud M, Meli I, Massy M, Hoepner R, Linington C, Chan A, Bennett JL, Enzmann V, Salmen A. Modeling MOG Antibody-Associated Disorder and Neuromyelitis Optica Spectrum Disorder in Animal Models: Visual System Manifestations. NEUROLOGY(R) NEUROIMMUNOLOGY & NEUROINFLAMMATION 2023; 10:e200141. [PMID: 37429715 PMCID: PMC10691219 DOI: 10.1212/nxi.0000000000200141] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 05/15/2023] [Indexed: 07/12/2023]
Abstract
BACKGROUND AND OBJECTIVES Mechanisms of visual impairment in aquaporin 4 antibody (AQP4-IgG) seropositive neuromyelitis optica spectrum disorder (NMOSD) and myelin oligodendrocyte glycoprotein antibody (MOG-IgG)-associated disorder (MOGAD) are incompletely understood. The respective impact of optic nerve demyelination and primary and secondary retinal neurodegeneration are yet to be investigated in animal models. METHODS Active MOG35-55 experimental autoimmune encephalomyelitis (EAE) was induced in C57BL/6Jrj mice, and monoclonal MOG-IgG (8-18C5, murine), recombinant AQP4-IgG (rAb-53, human), or isotype-matched control IgG (Iso-IgG, human) was administered 10 days postimmunization. Mobility impairment was scored daily. Visual acuity by optomotor reflex and ganglion cell complex thickness (GCC, 3 innermost retinal layers) by optical coherence tomography (OCT) were longitudinally assessed. Histopathology of optic nerve and retina was investigated during presymptomatic, acute, and chronic disease phases for immune cells, demyelination, complement deposition, natural killer (NK) cell, AQP4, and astrocyte involvement, retinal ganglion cells (RGCs), and Müller cell activation. Groups were compared by nonparametric tests with a p value <0.05 indicating statistical significance. RESULTS Visual acuity decreased from baseline to chronic phase in MOG-IgG (mean ± standard error of the mean: 0.54 ± 0.01 to 0.46 ± 0.02 cycles/degree, p < 0.05) and AQP4-IgG EAE (0.54 ± 0.01 to 0.43 ± 0.02, cycles/degree, p < 0.05). Immune cell infiltration of optic nerves started in presymptomatic AQP4-IgG, but not in MOG-IgG EAE (5.85 ± 2.26 vs 0.13 ± 0.10 macrophages/region of interest [ROI] and 1.88 ± 0.63 vs 0.15 ± 0.06 T cells/ROI, both p < 0.05). Few NK cells, no complement deposition, and stable glial fibrillary acid protein and AQP4 fluorescence intensity characterized all EAE optic nerves. Lower GCC thickness (Spearman correlation coefficient r = -0.44, p < 0.05) and RGC counts (r = -0.47, p < 0.05) correlated with higher mobility impairment. RGCs decreased from presymptomatic to chronic disease phase in MOG-IgG (1,705 ± 51 vs 1,412 ± 45, p < 0.05) and AQP4-IgG EAE (1,758 ± 14 vs 1,526 ± 48, p < 0.01). Müller cell activation was not observed in either model. DISCUSSION In a multimodal longitudinal characterization of visual outcome in animal models of MOGAD and NMOSD, differential retinal injury and optic nerve involvement were not conclusively clarified. Yet optic nerve inflammation was earlier in AQP4-IgG-associated pathophysiology. Retinal atrophy determined by GCC thickness (OCT) and RGC counts correlating with mobility impairment in the chronic phase of MOG-IgG and AQP4-IgG EAE may serve as a generalizable marker of neurodegeneration.
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Affiliation(s)
- Jana Remlinger
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Maud Bagnoud
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Ivo Meli
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Marine Massy
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Robert Hoepner
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Christopher Linington
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Andrew Chan
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Jeffrey L Bennett
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Volker Enzmann
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland
| | - Anke Salmen
- From the Department of Neurology (J.R., M.B., I.M., M.M., R.H., A.C., A.S.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (J.R., M.M.), University of Bern, Switzerland; Institute of Infection (C.L.), Immunity and Inflammation, University of Glasgow, UK; Departments of Neurology and Ophthalmology (J.L.B.), Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora; and Department of Ophthalmology (V.E.), Inselspital, Bern University Hospital and Department for BioMedical Research (DBMR), University of Bern, Switzerland.
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12
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Tanaka K, Kezuka T, Ishikawa H, Tanaka M, Sakimura K, Abe M, Kawamura M. Pathogenesis, Clinical Features, and Treatment of Patients with Myelin Oligodendrocyte Glycoprotein (MOG) Autoantibody-Associated Disorders Focusing on Optic Neuritis with Consideration of Autoantibody-Binding Sites: A Review. Int J Mol Sci 2023; 24:13368. [PMID: 37686172 PMCID: PMC10488293 DOI: 10.3390/ijms241713368] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 08/20/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023] Open
Abstract
Although there is a substantial amount of data on the clinical characteristics, diagnostic criteria, and pathogenesis of myelin oligodendrocyte glycoprotein (MOG) autoantibody-associated disease (MOGAD), there is still uncertainty regarding the MOG protein function and the pathogenicity of anti-MOG autoantibodies in this disease. It is important to note that the disease characteristics, immunopathology, and treatment response of MOGAD patients differ from those of anti-aquaporin 4 antibody-positive neuromyelitis optica spectrum disorders (NMOSDs) and multiple sclerosis (MS). The clinical phenotypes of MOGAD are varied and can include acute disseminated encephalomyelitis, transverse myelitis, cerebral cortical encephalitis, brainstem or cerebellar symptoms, and optic neuritis. The frequency of optic neuritis suggests that the optic nerve is the most vulnerable lesion in MOGAD. During the acute stage, the optic nerve shows significant swelling with severe visual symptoms, and an MRI of the optic nerve and brain lesion tends to show an edematous appearance. These features can be alleviated with early extensive immune therapy, which may suggest that the initial attack of anti-MOG autoantibodies could target the structures on the blood-brain barrier or vessel membrane before reaching MOG protein on myelin or oligodendrocytes. To understand the pathogenesis of MOGAD, proper animal models are crucial. However, anti-MOG autoantibodies isolated from patients with MOGAD do not recognize mouse MOG efficiently. Several studies have identified two MOG epitopes that exhibit strong affinity with human anti-MOG autoantibodies, particularly those isolated from patients with the optic neuritis phenotype. Nonetheless, the relations between epitopes on MOG protein remain unclear and need to be identified in the future.
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Affiliation(s)
- Keiko Tanaka
- Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuoku, Niigata 951-8585, Japan
- Department of Multiple Sclerosis Therapeutics, School of Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima 960-1247, Japan
| | - Takeshi Kezuka
- Department of Ophthalmology, Tokyo Medical University, Tokyo 160-0023, Japan
| | - Hitoshi Ishikawa
- Department of Orthoptics and Visual Science, School of Allied Health Sciences, Kitasato University, Kanagawa 252-0373, Japan
| | - Masami Tanaka
- Kyoto MS Center, Kyoto Min-Iren Chuo Hospital, Kyoto 616-8147, Japan
| | - Kenji Sakimura
- Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuoku, Niigata 951-8585, Japan
| | - Manabu Abe
- Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuoku, Niigata 951-8585, Japan
| | - Meiko Kawamura
- Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuoku, Niigata 951-8585, Japan
- Division of Instrumental Analysis, Center for Coordination of Research Facilities, Institute for Research Administration, Niigata University, Niigata 951-8585, Japan
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13
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Lotan I, Chen JJ, Hacohen Y, Abdel-Mannan O, Mariotto S, Huda S, Gibbons E, Wilf-Yarkoni A, Hellmann MA, Stiebel-Kalish H, Pittock SJ, Flanagan EP, Molazadeh N, Anderson M, Salky R, Romanow G, Schindler P, Duchow AS, Paul F, Levy M. Intravenous immunoglobulin treatment for acute attacks in myelin oligodendrocyte glycoprotein antibody disease. Mult Scler 2023; 29:1080-1089. [PMID: 37431144 DOI: 10.1177/13524585231184738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
BACKGROUND The potential therapeutic benefit of intravenous immunoglobulins (IVIGs) for acute attacks of myelin oligodendrocyte glycoprotein antibody disease (MOGAD) is unknown. OBJECTIVE The objective was to describe the outcomes of IVIG treatment for acute MOGAD attacks. METHODS A retrospective observational study involving seven tertiary neuroimmunology centers. Data collection included patients' demographics, Expanded Disability Status Scale (EDSS), and visual acuity (VA) before the attack, at the nadir of the attack before IVIG treatment, and at follow-up visits ⩾3 months after treatment. RESULTS Thirty-nine patients were included, of which 21 (53.8%) were female. The median age was 23 years (range 5-74 years), and the median disease duration was 4 months (range 0-93 months). The most common type of attack treated with IVIG was isolated optic neuritis (ON) (unilateral n = 14, bilateral n = 5, associated with transverse myelitis (TM), n = 1), followed by acute disseminated encephalomyelitis (ADEM) (n = 8), multifocal (n = 7), TM (n = 3), brainstem (n = 1), and other encephalitis (n = 1). A significant improvement in both the EDSS and VA measures was observed at follow-up compared to the time of IVIG treatment initiation (p < 0.0001 for both outcome measures). CONCLUSION IVIG may be an effective treatment option for acute MOGAD attacks. Further prospective studies are warranted to validate our results.
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Affiliation(s)
- Itay Lotan
- Neuroimmunology Clinic and Research Laboratory, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Rabin Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - John J Chen
- Department of Ophthalmology and Neurology, Mayo Clinic, Rochester, MN, USA
- Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Yael Hacohen
- Queen Square Multiple Sclerosis Centre, UCL Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
- Department of Neurology, Great Ormond Street Hospital for Children, London, UK
| | - Omar Abdel-Mannan
- Queen Square Multiple Sclerosis Centre, UCL Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
- Department of Neurology, Great Ormond Street Hospital for Children, London, UK
| | - Sara Mariotto
- Neurology Unit, Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Saif Huda
- Department of Neurology, Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Emily Gibbons
- Department of Neurology, Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Adi Wilf-Yarkoni
- Rabin Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mark A Hellmann
- Rabin Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hadas Stiebel-Kalish
- Rabin Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
- Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
- Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Negar Molazadeh
- Neuroimmunology Clinic and Research Laboratory, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Monique Anderson
- Neuroimmunology Clinic and Research Laboratory, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Rebecca Salky
- Neuroimmunology Clinic and Research Laboratory, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Gabriela Romanow
- Neuroimmunology Clinic and Research Laboratory, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Patrick Schindler
- Experimental and Clinical Research Center, A Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and the Charité - Universitätsmedizin Berlin, Berlin, Germany
- Department of Neurology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Ankelien Solveig Duchow
- Experimental and Clinical Research Center, A Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and the Charité - Universitätsmedizin Berlin, Berlin, Germany
- Department of Neurology, Charité - Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Friedemann Paul
- Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, NeuroCure Clinical Research Center, Berlin, Germany
- Max Delbrueck Center for Molecular Medicine, Experimental and Clinical Research Center, Berlin, Germany
| | - Michael Levy
- Neuroimmunology Clinic and Research Laboratory, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Yandamuri SS, Filipek B, Obaid AH, Lele N, Thurman JM, Makhani N, Nowak RJ, Guo Y, Lucchinetti CF, Flanagan EP, Longbrake EE, O'Connor KC. MOGAD patient autoantibodies induce complement, phagocytosis, and cellular cytotoxicity. JCI Insight 2023; 8:e165373. [PMID: 37097758 PMCID: PMC10393237 DOI: 10.1172/jci.insight.165373] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 04/20/2023] [Indexed: 04/26/2023] Open
Abstract
Myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD) is an inflammatory demyelinating CNS condition characterized by the presence of MOG autoantibodies. We sought to investigate whether human MOG autoantibodies are capable of mediating damage to MOG-expressing cells through multiple mechanisms. We developed high-throughput assays to measure complement activity (CA), complement-dependent cytotoxicity (CDC), antibody-dependent cellular phagocytosis (ADCP), and antibody-dependent cellular cytotoxicity (ADCC) of live MOG-expressing cells. MOGAD patient sera effectively mediate all of these effector functions. Our collective analyses reveal that (a) cytotoxicity is not incumbent on MOG autoantibody quantity alone; (b) engagement of effector functions by MOGAD patient serum is bimodal, with some sera exhibiting cytotoxic capacity while others did not; (c) the magnitude of CDC and ADCP is elevated closer to relapse, while MOG-IgG binding is not; and (d) all IgG subclasses can damage MOG-expressing cells. Histopathology from a representative MOGAD case revealed congruence between lesion histology and serum CDC and ADCP, and we identified NK cells, mediators of ADCC, in the cerebrospinal fluid of relapsing patients with MOGAD. Thus, MOGAD-derived autoantibodies are cytotoxic to MOG-expressing cells through multiple mechanisms, and assays quantifying CDC and ADCP may prove to be effective tools for predicting risk of future relapses.
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Affiliation(s)
- Soumya S Yandamuri
- Department of Neurology and
- Department of Immunobiology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Beata Filipek
- Department of Neurology and
- Department of Immunobiology, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Pharmaceutical Microbiology and Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Abeer H Obaid
- Department of Neurology and
- Department of Immunobiology, Yale School of Medicine, New Haven, Connecticut, USA
- Institute of Biomedical Studies, Baylor University, Waco, Texas, USA
| | | | - Joshua M Thurman
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Naila Makhani
- Department of Neurology and
- Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut, USA
| | | | - Yong Guo
- Department of Neurology and Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Claudia F Lucchinetti
- Department of Neurology and Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Eoin P Flanagan
- Department of Neurology and Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Kevin C O'Connor
- Department of Neurology and
- Department of Immunobiology, Yale School of Medicine, New Haven, Connecticut, USA
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15
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Mader S, Ho S, Wong HK, Baier S, Winklmeier S, Riemer C, Rübsamen H, Fernandez IM, Gerhards R, Du C, Chuquisana O, Lünemann JD, Lux A, Nimmerjahn F, Bradl M, Kawakami N, Meinl E. Dissection of complement and Fc-receptor-mediated pathomechanisms of autoantibodies to myelin oligodendrocyte glycoprotein. Proc Natl Acad Sci U S A 2023; 120:e2300648120. [PMID: 36943883 PMCID: PMC10068779 DOI: 10.1073/pnas.2300648120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 02/08/2023] [Indexed: 03/23/2023] Open
Abstract
Autoantibodies against myelin oligodendrocyte glycoprotein (MOG) have recently been established to define a new disease entity, MOG-antibody-associated disease (MOGAD), which is clinically overlapping with multiple sclerosis. MOG-specific antibodies (Abs) from patients are pathogenic, but the precise effector mechanisms are currently still unknown and no therapy is approved for MOGAD. Here, we determined the contributions of complement and Fc-receptor (FcR)-mediated effects in the pathogenicity of MOG-Abs. Starting from a recombinant anti-MOG (mAb) with human IgG1 Fc, we established MOG-specific mutant mAbs with differential FcR and C1q binding. We then applied selected mutants of this MOG-mAb in two animal models of experimental autoimmune encephalomyelitis. First, we found MOG-mAb-induced demyelination was mediated by both complement and FcRs about equally. Second, we found that MOG-Abs enhanced activation of cognate MOG-specific T cells in the central nervous system (CNS), which was dependent on FcR-, but not C1q-binding. The identification of complement-dependent and -independent pathomechanisms of MOG-Abs has implications for therapeutic strategies in MOGAD.
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Affiliation(s)
- Simone Mader
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Samantha Ho
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
- Graduate School of Systemic Neuroscience, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Hoi Kiu Wong
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Selia Baier
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Stephan Winklmeier
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Carolina Riemer
- Chair of Genetics, Department of Biology, Friedrich Alexander University of Erlangen-Nürnberg, 91058Erlangen, Germany
| | - Heike Rübsamen
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Iris Marti Fernandez
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Ramona Gerhards
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Cuilian Du
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Omar Chuquisana
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, 48149Münster, Germany
| | - Jan D. Lünemann
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, 48149Münster, Germany
| | - Anja Lux
- Chair of Genetics, Department of Biology, Friedrich Alexander University of Erlangen-Nürnberg, 91058Erlangen, Germany
| | - Falk Nimmerjahn
- Chair of Genetics, Department of Biology, Friedrich Alexander University of Erlangen-Nürnberg, 91058Erlangen, Germany
- Medical Immunology Campus Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen91058, Germany
| | - Monika Bradl
- Department of Neuroimmunology, Center for Brain Research, Medical University of Vienna, 1090Vienna, Austria
| | - Naoto Kawakami
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
| | - Edgar Meinl
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152Planegg-Martinsried, Germany
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16
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Carta S, Cobo Calvo Á, Armangué T, Saiz A, Lechner C, Rostásy K, Breu M, Baumann M, Höftberger R, Ayzenberg I, Schwake C, Sepulveda M, Martínez-Hernández E, Olivé-Cirera G, Arrambide G, Tintoré M, Bernard-Valnet R, Du Pasquier R, Brilot F, Ramanathan S, Schanda K, Gajofatto A, Ferrari S, Sechi E, Flanagan EP, Pittock SJ, Redenbaugh V, Reindl M, Marignier R, Mariotto S. Significance of Myelin Oligodendrocyte Glycoprotein Antibodies in CSF: A Retrospective Multicenter Study. Neurology 2023; 100:e1095-e1108. [PMID: 36526426 PMCID: PMC10074465 DOI: 10.1212/wnl.0000000000201662] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 10/24/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Although the diagnosis of myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is based on serum MOG antibodies (MOG-Abs) positivity, patients with coexisting or restricted MOG-Abs in the CSF have been reported. The aim of this study is to characterize the relevance of CSF MOG-Abs positivity in clinical practice. METHODS Eleven medical centers retrospectively collected clinical and laboratory data of adult and pediatric patients with suspected inflammatory CNS disease and MOG-Abs positivity in serum and/or CSF using live cell-based assays. Comparisons were performed using parametric or nonparametric tests, as appropriate. Potential factors of unfavorable outcomes were explored by Cox proportional hazard models and logistic regression. RESULTS The cohort included 255 patients: 139 (55%) women and 132 (52%) children (i.e., <18-year-old). Among them, 145 patients (56.8%) had MOG-Abs in both serum and CSF (MOG-Abs seropositive and CSF positive), 79 (31%) only in serum (MOG-Abs seropositive and CSF negative), and 31 (12%) only in CSF (MOG-Abs seronegative and CSF positive). MOG-Abs seronegative and CSF positive predominated in adults (22% vs 3% of children), presented more commonly with motor (n = 14, 45%) and sensory symptoms (n = 13, 42%), and all but 4 (2 multiple sclerosis, 1 polyradiculoneuritis, and 1 Susac syndrome) had a final diagnosis compatible with MOGAD. When comparing seropositive patients according to MOG-Abs CSF status, MOG-Abs seropositive and CSF positive patients had a higher Expanded Disability Status Scale (EDSS) at nadir during the index event (median 4.5, interquartile range [IQR] 3.0-7.5 vs 3.0, IQR 2.0-6.8, p = 0.007) and presented more commonly with sensory (45.5% vs 24%, p = 0.002), motor (33.6% vs 19%, p = 0.021), and sphincter symptoms (26.9% vs 7.8%, p = 0.001) than MOG-Abs seropositive and CSF negative. At the last follow-up, MOG-Abs seropositive and CSF positive cases had more often persistent sphincter dysfunction (17.3% vs 4.3%, p = 0.008). Compared with seropositive patients, those MOG-Abs seronegative and CSF positive had higher disability at the last follow-up (p ≤ 0.001), and MOG-Abs seronegative and CSF positive status were independently associated with an EDSS ≥3.0. DISCUSSION Paired serum and CSF MOG-Abs positivity are common in MOGAD and are associated with a more severe clinical presentation. CSF-only MOG-Abs positivity can occur in patients with a phenotype suggestive of MOGAD and is associated with a worse outcome. Taken together, these data suggest a clinical interest in assessing CSF MOG-Abs in patients with a phenotype suggestive of MOGAD, regardless of the MOG-Abs serostatus.
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Affiliation(s)
- Sara Carta
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Álvaro Cobo Calvo
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Thaís Armangué
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Albert Saiz
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Christian Lechner
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Kevin Rostásy
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Markus Breu
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Matthias Baumann
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Romana Höftberger
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Ilya Ayzenberg
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Carolin Schwake
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Maria Sepulveda
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Eugenia Martínez-Hernández
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Gemma Olivé-Cirera
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Georgina Arrambide
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Mar Tintoré
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Raphael Bernard-Valnet
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Renaud Du Pasquier
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Fabienne Brilot
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Sudarshini Ramanathan
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Kathrin Schanda
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Alberto Gajofatto
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Sergio Ferrari
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Elia Sechi
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Eoin P Flanagan
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Sean J Pittock
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Vyanka Redenbaugh
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Markus Reindl
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Romain Marignier
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France
| | - Sara Mariotto
- From the Neurology Unit (S.C., A.G., S.F., S.M.), Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy; Servei de Neurologia-Neuroimmunologia (A.C.C., G.A., M.T.), Centre d'Esclerosi Múltiple de Catalunya, (CEMCAT), Vall d'Hebron Institut de Recerca, Vall d'Hebron Hospital Universitari, Universitat Autònoma de Barcelona, Spain; Pediatric Neuroimmunology Unit (T.A.), Sant Joan de Déu Children's Hospital, University of Barcelona, Spain; Neuroimmunology and Multiple Sclerosis Unit (T.A., A.S., M.S., E.M-H., G.O-C.), Service of Neurology, Hospital Clinic de Barcelona, Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and, University of Barcelona, Spain; Division of Pediatric Neurology (C.L., M.B.), Department of Pediatric and Adolescent Medicine, Medical University of Innsbruck, Austria; Division of Pediatric Neurology (K.R.), University of Witten/Herdecke Childrens' Hospital, Datteln, Germany; Division of Pediatric Pulmonology (M.B.), Allergology and Endocrinology, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Austria; Division of Neuropathology and Neurochemistry (R.H.), Department of Neurology, Medical University of Vienna, Austria; Department of Neurology (I.A., C.S.), St. Josef-Hospital, Ruhr-University Bochum, Germany; Department of Clinical Neurosciences (R.B-V., R.d.P.), Service of Neurology, Lausanne University Hospital and University of Lausanne, Switzerland; Faculty of Medicine and Health and Brain and Mind Centre (F.B.), Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, School of Medical Sciences, The University of Sydney, Australia; Translational Neuroimmunology Group (S.R.), Kids Neuroscience Centre, Children's Hospital at Westmead; Sydney Medical School and Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney; Department of Neurology (S.R.), Concord Hospital, Sydney, Australia; Clinical Department of Neurology (K.S., M.R.), Medical University of Innsbruck, Austria; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology, Department of Laboratory Medicine and Pathology (E.P.F., S.J.P., V.R.), Mayo Clinic College of Medicine and Science, Rochester; Service de Neurologie (R.M.), Sclérose en Plaques, Pathologies de la Myéline et Neuro-inflammation, Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, France.
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The Potential Pathogenicity of Myelin Oligodendrocyte Glycoprotein Antibodies in the Optic Pathway. J Neuroophthalmol 2023; 43:5-16. [PMID: 36729854 PMCID: PMC9924971 DOI: 10.1097/wno.0000000000001772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD) is an acquired inflammatory demyelinating disease with optic neuritis (ON) as the most frequent clinical symptom. The hallmark of the disease is the presence of autoantibodies against MOG (MOG-IgG) in the serum of patients. Whereas the role of MOG in the experimental autoimmune encephalomyelitis animal model is well-established, the pathogenesis of the human disease and the role of human MOG-IgG is still not fully clear. EVIDENCE ACQUISITION PubMed was searched for the terms "MOGAD," "optic neuritis," "MOG antibodies," and "experimental autoimmune encephalomyelitis" alone or in combination, to find articles of interest for this review. Only articles written in English language were included and reference lists were searched for further relevant papers. RESULTS B and T cells play a role in the pathogenesis of human MOGAD. The distribution of lesions and their development toward the optic pathway is influenced by the genetic background in animal models. Moreover, MOGAD-associated ON is frequently bilateral and often relapsing with generally favorable visual outcome. Activated T-cell subsets create an inflammatory environment and B cells are necessary to produce autoantibodies directed against the MOG protein. Here, pathologic mechanisms of MOG-IgG are discussed, and histopathologic findings are presented. CONCLUSIONS MOGAD patients often present with ON and harbor antibodies against MOG. Furthermore, pathogenesis is most likely a synergy between encephalitogenic T and antibody producing B cells. However, to which extent MOG-IgG are pathogenic and the exact pathologic mechanism is still not well understood.
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Spatola M, Chuquisana O, Jung W, Lopez JA, Wendel EM, Ramanathan S, Keller CW, Hahn T, Meinl E, Reindl M, Dale RC, Wiendl H, Lauffenburger DA, Rostásy K, Brilot F, Alter G, Lünemann JD. Humoral signatures of MOG-antibody-associated disease track with age and disease activity. Cell Rep Med 2023; 4:100913. [PMID: 36669487 PMCID: PMC9975090 DOI: 10.1016/j.xcrm.2022.100913] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/26/2022] [Accepted: 12/24/2022] [Indexed: 01/20/2023]
Abstract
Myelin oligodendrocyte glycoprotein (MOG)-antibody (Ab)-associated disease (MOGAD) is an inflammatory demyelinating disease of the CNS. Although MOG is encephalitogenic in different mammalian species, the mechanisms by which human MOG-specific Abs contribute to MOGAD are poorly understood. Here, we use a systems-level approach combined with high-dimensional characterization of Ab-associated immune features to deeply profile humoral immune responses in 123 patients with MOGAD. We show that age is a major determinant for MOG-antibody-related immune signatures. Unsupervised clustering additionally identifies two dominant immunological endophenotypes of MOGAD. The pro-inflammatory endophenotype characterized by increased binding affinities for activating Fcγ receptors (FcγRs), capacity to activate innate immune cells, and decreased frequencies of galactosylated and sialylated immunoglobulin G (IgG) glycovariants is associated with clinically active disease. Our data support the concept that FcγR-mediated effector functions control the pathogenicity of MOG-specific IgG and suggest that FcγR-targeting therapies should be explored for their therapeutic potential in MOGAD.
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Affiliation(s)
- Marianna Spatola
- Ragon Institute of MGH, MIT and Harvard Medical School, Cambridge, MA 02139, USA.
| | - Omar Chuquisana
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, WWU, Münster 48149, Germany
| | - Wonyeong Jung
- Ragon Institute of MGH, MIT and Harvard Medical School, Cambridge, MA 02139, USA; Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Joseph A Lopez
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW 2145, Australia; Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia; School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia; Brain and Mind Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | - Eva-Maria Wendel
- Department of Pediatric Neurology, Olgahospital/Klinikum Stuttgart, 70174 Stuttgart, Germany
| | - Sudarshini Ramanathan
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW 2145, Australia; Brain and Mind Centre, The University of Sydney, Sydney, NSW 2006, Australia; Department of Neurology, Concord Hospital, Sydney, NSW 2139, Australia; Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia
| | - Christian W Keller
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, WWU, Münster 48149, Germany
| | - Tim Hahn
- Institute for Translational Psychiatry, University of Münster, 48149 Münster, Germany
| | - Edgar Meinl
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospital, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Markus Reindl
- Clinical Department of Neurology, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Russell C Dale
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW 2145, Australia; Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia; Brain and Mind Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | - Heinz Wiendl
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, WWU, Münster 48149, Germany; Brain and Mind Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | | | - Kevin Rostásy
- Department of Pediatric Neurology, Children's Hospital Datteln, University Witten/Herdecke, 45711 Datteln, Germany
| | - Fabienne Brilot
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW 2145, Australia; Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia; School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia; Brain and Mind Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | - Galit Alter
- Ragon Institute of MGH, MIT and Harvard Medical School, Cambridge, MA 02139, USA
| | - Jan D Lünemann
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, WWU, Münster 48149, Germany.
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Woo H, Shim Y, Chae JH, Kim KJ, Lim BC. Seizure Evolution and Outcome in Pediatric Autoimmune Encephalitis. Pediatr Neurol 2023; 139:35-42. [PMID: 36508881 DOI: 10.1016/j.pediatrneurol.2022.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 09/05/2022] [Accepted: 11/16/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND Our study aimed to characterize seizure incidence and seizure outcome of pediatric autoimmune encephalitis (AE) focusing on subgroup analysis based on antibody (Ab). METHODS Among 110 pediatric patients with AE, we compared seizure characteristics and outcomes in 68 patients with seizure, who satisfied the proposed criteria of pediatric AE. Accordingly, patients were classified into three groups, anti-myelin oligodendrocyte glycoprotein (anti-MOG) AE, anti-N-methyl-D-aspartic acid receptor (anti-NMDAR) AE, and Ab-negative AE. Univariate and multivariate analyses were performed to evaluate the risk factors for postencephalitic seizures, defined as persisting seizures six months after onset. RESULTS Seizure incidence in the anti-NMDAR (88.9%) and Ab-negative (71.1%) groups differed from anti-MOG group (37.8%). Median seizure frequency within six months was higher in the Ab-negative group (6.0, interquartile range [IQR] 3.0 to 13.0) than in the anti-NMDAR group (3.0, IQR 2.0 to 4.5) and anti-MOG group (2.0, IQR 1.0 to 5.0). Patients in the Ab-negative group tended to develop postencephalitic seizures more frequently and have a lower seizure freedom rate than those in the anti-NMDAR and anti-MOG groups. Ab-negative status, high seizure frequency within six months, and the presence of status epilepticus were associated with the development of postencephalitic seizures on univariate analysis. On multivariate analysis, Ab-negative status remained the only significant variable linked with postencephalitic seizure (odds ratio, 4.17; 95% confidence interval, 1.02 to 18.05). CONCLUSIONS We delineated the seizure incidence, evolution, and outcome of pediatric patients with Ab-positive and Ab-negative AE. Ab-negative status is predictive of higher seizure burden, more frequent development of postencephalitic seizures, and less favorable seizure outcome than anti-NMDAR and anti-MOG Ab-positive status.
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Affiliation(s)
- Hyewon Woo
- Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Republic of Korea; Department of Pediatrics, Chungbuk National University Hospital, Cheongju, Republic of Korea
| | - Youngkyu Shim
- Department of Pediatrics, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Jong-Hee Chae
- Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Republic of Korea; Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ki Joong Kim
- Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Republic of Korea; Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Byung Chan Lim
- Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul, Republic of Korea; Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Kohyama K, Nishida H, Kaneko K, Misu T, Nakashima I, Sakuma H. Complement-dependent cytotoxicity of human autoantibodies against myelin oligodendrocyte glycoprotein. Front Neurosci 2023; 17:1014071. [PMID: 36816137 PMCID: PMC9930155 DOI: 10.3389/fnins.2023.1014071] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 01/16/2023] [Indexed: 02/04/2023] Open
Abstract
Background The autoantibody to myelin oligodendrocyte glycoprotein (MOG), a component of the central nervous system myelin, has been identified in a subset of demyelinating diseases. However, there is no convincing evidence to support the direct pathogenic contribution of this autoantibody. Objective To elucidate the role of anti-MOG autoantibodies in human demyelinating disorders, we assessed the effect of autoantibodies on MOG-expressing cells. Methods Mammalian cells expressing the human MOG protein reacted with human anti-MOG autoantibodies in the presence or absence of complement. Sera from 86 patients and 11 healthy sera were used. We analyzed anti-MOG antibody titers, IgG subclass, and their cytotoxic ability in sera from patients with various neurological diseases. Membrane attack complex (MAC) formation was examined by detection of complement C9 or C9neo with western blot or flow cytometry. Results Among 86 patients, 40 were determined to be MOG-IgG-positive and 46 were negative. Anti-MOG-positive sera, but not -negative sera, caused cell death in MOG-expressing cells. This cytotoxic effect was disappeared after heat inactivation of sera. Importantly, anti-MOG IgG and externally added complement were necessary for sufficient cytotoxic effects. Anti-MOG autoantibodies were histologically colocalized with complement and formed a membrane attack complex consisting of anti-MOG IgG and complement factors. Conclusion The human MOG antibody specifically killed MOG-expressing cells in vitro in the presence of externally added complement. Membrane attack complexes were formed on the cells, indicating that this autoantibody activated complement-mediated cytotoxicity. Further studies in larger numbers of patients are needed to characterize the role of complement in MOGAD.
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Affiliation(s)
- Kuniko Kohyama
- Department of Brain and Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hiroya Nishida
- Department of Brain and Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kimihiko Kaneko
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tatsuro Misu
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ichiro Nakashima
- Department of Neurology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Hiroshi Sakuma
- Department of Brain and Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan,*Correspondence: Hiroshi Sakuma,
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Branson HM, Longoni G. Clinical Neuroimaging in Pediatric Dysimmune Disorders of the Central Nervous System. Semin Roentgenol 2023; 58:67-87. [PMID: 36732013 DOI: 10.1053/j.ro.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/23/2022] [Accepted: 11/08/2022] [Indexed: 12/12/2022]
Affiliation(s)
- Helen M Branson
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada; University of Toronto, Department of Medical Imaging, Toronto, Ontario, Canada.
| | - Giulia Longoni
- Department of Pediatrics, Division of Neurology, The Hospital for Sick Children, Toronto, Ontario, Canada; Garry Hurvitz Centre for Brain & Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada; University of Toronto, Department of Paediatrics, Toronto, Ontario, Canada
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22
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Duong SL, Prüss H. Molecular disease mechanisms of human antineuronal monoclonal autoantibodies. Trends Mol Med 2023; 29:20-34. [PMID: 36280535 DOI: 10.1016/j.molmed.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 11/22/2022]
Abstract
Autoantibodies targeting brain antigens can mediate a wide range of neurological symptoms ranging from epileptic seizures to psychosis to dementia. Although earlier experimental work indicated that autoantibodies can be directly pathogenic, detailed studies on disease mechanisms, biophysical autoantibody properties, and target interactions were hampered by the availability of human material and the paucity of monospecific disease-related autoantibodies. The emerging generation of patient-derived monoclonal autoantibodies (mAbs) provides a novel platform for the detailed characterization of immunobiology and autoantibody pathogenicity in vitro and in animal models. This Feature Review focuses on recent advances in mAb generation and discusses their potential as powerful scientific tools for high-resolution imaging, antigenic target identification, atomic-level structural analyses, and the development of antibody-selective immunotherapies.
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Affiliation(s)
- Sophie L Duong
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany; German Center for Neurodegenerative Diseases (DZNE) Berlin, 10117 Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Junior Clinician Scientist Program, Charitéplatz 1, 10117 Berlin, Germany
| | - Harald Prüss
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany; German Center for Neurodegenerative Diseases (DZNE) Berlin, 10117 Berlin, Germany.
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23
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Persistent virus-specific and clonally expanded antibody-secreting cells respond to induced self-antigen in the CNS. Acta Neuropathol 2023; 145:335-355. [PMID: 36695896 PMCID: PMC9925600 DOI: 10.1007/s00401-023-02537-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/20/2022] [Accepted: 01/02/2023] [Indexed: 01/26/2023]
Abstract
B cells contribute to the pathogenesis of both cellular- and humoral-mediated central nervous system (CNS) inflammatory diseases through a variety of mechanisms. In such conditions, B cells may enter the CNS parenchyma and contribute to local tissue destruction. It remains unexplored, however, how infection and autoimmunity drive transcriptional phenotypes, repertoire features, and antibody functionality. Here, we profiled B cells from the CNS of murine models of intracranial (i.c.) viral infections and autoimmunity. We identified a population of clonally expanded, antibody-secreting cells (ASCs) that had undergone class-switch recombination and extensive somatic hypermutation following i.c. infection with attenuated lymphocytic choriomeningitis virus (rLCMV). Recombinant expression and characterisation of these antibodies revealed specificity to viral antigens (LCMV glycoprotein GP), correlating with ASC persistence in the brain weeks after resolved infection. Furthermore, these virus-specific ASCs upregulated proliferation and expansion programs in response to the conditional and transient induction of the LCMV GP as a neo-self antigen by astrocytes. This class-switched, clonally expanded, and mutated population persisted and was even more pronounced when peripheral B cells were depleted prior to autoantigen induction in the CNS. In contrast, the most expanded B cell clones in mice with persistent expression of LCMV GP in the CNS did not exhibit neo-self antigen specificity, potentially a consequence of local tolerance induction. Finally, a comparable population of clonally expanded, class-switched, and proliferating ASCs was detected in the cerebrospinal fluid of relapsing multiple sclerosis (RMS) patients. Taken together, our findings support the existence of B cells that populate the CNS and are capable of responding to locally encountered autoantigens.
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Corbali O, Chitnis T. Pathophysiology of myelin oligodendrocyte glycoprotein antibody disease. Front Neurol 2023; 14:1137998. [PMID: 36925938 PMCID: PMC10011114 DOI: 10.3389/fneur.2023.1137998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/09/2023] [Indexed: 03/08/2023] Open
Abstract
Myelin Oligodendrocyte Glycoprotein Antibody Disease (MOGAD) is a spectrum of diseases, including optic neuritis, transverse myelitis, acute disseminated encephalomyelitis, and cerebral cortical encephalitis. In addition to distinct clinical, radiological, and immunological features, the infectious prodrome is more commonly reported in MOGAD (37-70%) than NMOSD (15-35%). Interestingly, pediatric MOGAD is not more aggressive than adult-onset MOGAD, unlike in multiple sclerosis (MS), where annualized relapse rates are three times higher in pediatric-onset MS. MOGAD pathophysiology is driven by acute attacks during which T cells and MOG antibodies cross blood brain barrier (BBB). MOGAD lesions show a perivenous confluent pattern around the small veins, lacking the radiological central vein sign. Initial activation of T cells in the periphery is followed by reactivation in the subarachnoid/perivascular spaces by MOG-laden antigen-presenting cells and inflammatory CSF milieu, which enables T cells to infiltrate CNS parenchyma. CD4+ T cells, unlike CD8+ T cells in MS, are the dominant T cell type found in lesion histology. Granulocytes, macrophages/microglia, and activated complement are also found in the lesions, which could contribute to demyelination during acute relapses. MOG antibodies potentially contribute to pathology by opsonizing MOG, complement activation, and antibody-dependent cellular cytotoxicity. Stimulation of peripheral MOG-specific B cells through TLR stimulation or T follicular helper cells might help differentiate MOG antibody-producing plasma cells in the peripheral blood. Neuroinflammatory biomarkers (such as MBP, sNFL, GFAP, Tau) in MOGAD support that most axonal damage happens in the initial attack, whereas relapses are associated with increased myelin damage.
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Affiliation(s)
- Osman Corbali
- Harvard Medical School, Boston, MA, United States.,Department of Neurology, Brigham and Women's Hospital, Ann Romney Center for Neurologic Diseases, Boston, MA, United States
| | - Tanuja Chitnis
- Harvard Medical School, Boston, MA, United States.,Department of Neurology, Brigham and Women's Hospital, Ann Romney Center for Neurologic Diseases, Boston, MA, United States
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Agrawal M, Shankar S, Bhatta S. Neuromyelitis optica spectrum disorder with negative aquaporin-4 antibodies and positive anti-myelin oligodendrocyte glycoprotein antibodies: A case report. Med J Armed Forces India 2022; 78:S303-S307. [PMID: 36147390 PMCID: PMC9485742 DOI: 10.1016/j.mjafi.2020.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 10/12/2020] [Indexed: 10/22/2022] Open
Abstract
Neuromyelitis optica spectrum disorders (NMOSDs) are rare autoimmune-mediated chronic inflammatory disorders involving the central nervous system. The concept of NMOSDs has widened up recently. Its diagnostic criteria have broadened the knowledge of this particular disease including the atypical cases where antiaquaporin-4 antibody is negative and anti-myelin oligodendrocyte glycoprotein (MOG) antibody is positive. Myelin oligodendrocyte glycoprotein is a protein expressed on the outer surface of myelin sheath and oligodendrocytes of the central nervous system. The detection of anti-MOG-Ab is emerging evidence, and thus, research on the role of this antibody in such seronegative cases is still underway. Early diagnosis and adequate therapy is essential in such cases. Here, we report an eight-year-old girl who was diagnosed with NMOSDs and found to have anti-MOG antibodies in place of AQP-4 antibodies.
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Affiliation(s)
- Mohini Agrawal
- Resident, Department of Ophthalmology, Armed Forces Medical College, Pune, India
| | - Sandeep Shankar
- Professor, Department of Ophthalmology, Armed Forces Medical College, Pune, India
| | - Sunandan Bhatta
- Resident, Department of Ophthalmology, Armed Forces Medical College, Pune, India
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Stathopoulos P, Dalakas MC. The role of complement and complement therapeutics in neuromyelitis optica spectrum disorders. Expert Rev Clin Immunol 2022; 18:933-945. [PMID: 35899480 DOI: 10.1080/1744666x.2022.2105205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Neuromyelitis optica spectrum disorders (NMOSD) are characterized in the majority of cases by the presence of IgG1 autoantibodies against aquaporin 4 (AQP4) and myelin-oligodendrocyte glycoprotein (MOG), both capable of activating complement. AREAS COVERED We review evidence of complement involvement in NMOSD pathophysiology from pathological, in vitro, in vivo, human studies, and clinical trials. EXPERT OPINION In AQP4 NMOSD, complement deposition is a prominent pathological feature, while in vitro and in vivo studies have demonstrated complement-dependent pathogenicity of AQP4 antibodies. Consistent with these studies, the anti-C5 monoclonal antibody eculizumab was remarkably effective and safe in a phase 2/3 trial of AQP4-NMOSD patents leading to FDA-approved indication. Several other anti-complement agents, either approved or in trials for other neuro-autoimmunities, like myasthenia, CIDP, and GBS, are also relevant to NMOSD generating an exciting group of evolving immunotherapies. Limited but compelling in vivo and in vitro data suggest that anti-complement therapeutics may be also applicable to a subset of MOG NMOSD patients with severe disease. Overall, anticomplement agents, along with the already approved anti-IL6 and anti-CD19 monoclonal antibodies sartralizumab and inebilizumab, are rapidly changing the therapeutic algorithm in NMOSD, a previously difficult-to-treat autoimmune neurological disorder.
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Affiliation(s)
- Panos Stathopoulos
- Department of Neurology, National and Kapodistrian University of Athens, Athens, Greece
| | - Marinos C Dalakas
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,Neuroimmunology Unit, National and Kapodistrian University of Athens, Athens, Greece
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Nelke C, Spatola M, Schroeter CB, Wiendl H, Lünemann JD. Neonatal Fc Receptor-Targeted Therapies in Neurology. Neurotherapeutics 2022; 19:729-740. [PMID: 34997443 PMCID: PMC9294083 DOI: 10.1007/s13311-021-01175-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2021] [Indexed: 12/23/2022] Open
Abstract
Autoantibodies are increasingly recognized for their pathogenic potential in a growing number of neurological diseases. While myasthenia gravis represents the prototypic antibody (Ab)-mediated neurological disease, many more disorders characterized by Abs targeting neuronal or glial antigens have been identified over the past two decades. Depletion of humoral immune components including immunoglobulin G (IgG) through plasma exchange or immunoadsorption is a successful therapeutic strategy in most of these disease conditions. The neonatal Fc receptor (FcRn), primarily expressed by endothelial and myeloid cells, facilitates IgG recycling and extends the half-life of IgG molecules. FcRn blockade prevents binding of endogenous IgG to FcRn, which forces these antibodies into lysosomal degradation, leading to IgG depletion. Enhancing the degradation of endogenous IgG by FcRn-targeted therapies proved to be a powerful therapeutic approach in patients with generalized MG and is currently being tested in clinical trials for several other neurological diseases including autoimmune encephalopathies, neuromyelitis optica spectrum disorders, and inflammatory neuropathies. This review illustrates mechanisms of FcRn-targeted therapies and appraises their potential to treat neurological diseases.
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Affiliation(s)
- Christopher Nelke
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Dusseldorf, Germany
| | - Marianna Spatola
- MIT and Harvard Medical School, Ragon Institute of MGH, Cambridge, MA, USA
| | - Christina B Schroeter
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Dusseldorf, Germany
| | - Heinz Wiendl
- Department of Neurology With Institute of Translational Neurology, University Hospital Münster, Munster, Germany
| | - Jan D Lünemann
- Department of Neurology With Institute of Translational Neurology, University Hospital Münster, Munster, Germany.
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Li Y, Liu X, Wang J, Pan C, Tang Z. Clinical Features and Imaging Findings of Myelin Oligodendrocyte Glycoprotein-IgG-Associated Disorder (MOGAD). Front Aging Neurosci 2022; 14:850743. [PMID: 35370624 PMCID: PMC8965323 DOI: 10.3389/fnagi.2022.850743] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/08/2022] [Indexed: 01/14/2023] Open
Abstract
Myelin oligodendrocyte glycoprotein-IgG-associated disorder (MOGAD) is a nervous system (NS) demyelination disease and a newly recognized distinct disease complicated with various diseases or symptoms; however, MOGAD was once considered a subset of neuromyelitis optica spectrum disorder (NMOSD). The detection of MOG-IgG has been greatly improved by the cell-based assay test method. In one study, 31% of NMOSD patients with negative aquaporin-4 (AQP-4) antibody were MOG-IgG positive. MOGAD occurs in approximately the fourth decade of a person’s life without a markedly female predominance. Usually, optic neuritis (ON), myelitis or acute disseminated encephalomyelitis (ADEM) encephalitis are the typical symptoms of MOGAD. MOG-IgG have been found in patients with peripheral neuropathy, teratoma, COVID-19 pneumonia, etc. Some studies have revealed the presence of brainstem lesions, encephalopathy or cortical encephalitis. Attention should be given to screening patients with atypical symptoms. Compared to NMOSD, MOGAD generally responds well to immunotherapy and has a good functional prognosis. Approximately 44-83% of patients undergo relapsing episodes within 8 months, which mostly involve the optic nerve, and persistently observed MOG-IgG and severe clinical performance may indicate a polyphasic course of illness. Currently, there is a lack of clinical randomized controlled trials on the treatment and prognosis of MOGAD. The purpose of this review is to discuss the clinical manifestations, imaging features, outcomes and prognosis of MOGAD.
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Rapid Discrimination of Neuromyelitis Optica Spectrum Disorder and Multiple Sclerosis Using Machine Learning on Infrared Spectra of Sera. Int J Mol Sci 2022; 23:ijms23052791. [PMID: 35269934 PMCID: PMC8911153 DOI: 10.3390/ijms23052791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/24/2022] [Accepted: 03/01/2022] [Indexed: 12/13/2022] Open
Abstract
Neuromyelitis optica spectrum disorder (NMOSD) and multiple sclerosis (MS) are both autoimmune inflammatory and demyelinating diseases of the central nervous system. NMOSD is a highly disabling disease and rapid introduction of the appropriate treatment at the acute phase is crucial to prevent sequelae. Specific criteria were established in 2015 and provide keys to distinguish NMOSD and MS. One of the most reliable criteria for NMOSD diagnosis is detection in patient’s serum of an antibody that attacks the water channel aquaporin-4 (AQP-4). Another target in NMOSD is myelin oligodendrocyte glycoprotein (MOG), delineating a new spectrum of diseases called MOG-associated diseases. Lastly, patients with NMOSD can be negative for both AQP-4 and MOG antibodies. At disease onset, NMOSD symptoms are very similar to MS symptoms from a clinical and radiological perspective. Thus, at first episode, given the urgency of starting the anti-inflammatory treatment, there is an unmet need to differentiate NMOSD subtypes from MS. Here, we used Fourier transform infrared spectroscopy in combination with a machine learning algorithm with the aim of distinguishing the infrared signatures of sera of a first episode of NMOSD from those of a first episode of relapsing-remitting MS, as well as from those of healthy subjects and patients with chronic inflammatory demyelinating polyneuropathy. Our results showed that NMOSD patients were distinguished from MS patients and healthy subjects with a sensitivity of 100% and a specificity of 100%. We also discuss the distinction between the different NMOSD serostatuses. The coupling of infrared spectroscopy of sera to machine learning is a promising cost-effective, rapid and reliable differential diagnosis tool capable of helping to gain valuable time in patients’ treatment.
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Clinical Diagnosis of an Autoimmune Encephalitis Presented as a Manic Episode with Psychotic Symptoms: A Case Report. Case Rep Psychiatry 2022; 2022:2460492. [PMID: 35223120 PMCID: PMC8866001 DOI: 10.1155/2022/2460492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/08/2022] [Accepted: 01/31/2022] [Indexed: 12/27/2022] Open
Abstract
Introduction Autoimmune encephalitis is caused by antineuronal immune mechanisms. Its clinical presentation is heterogeneous and in many cases onset with psychiatric symptoms. Paraclinical criteria guide the approach; however, the challenge occurs when there are no detectable autoantibodies in serum or cerebrospinal fluid (CSF). Methodology. We report one case that highlights the variability of clinical manifestations, which in the absence of antibodies was treated with immunotherapy with good response. Conclusion In places where there is no antibody measurement, or when its measurement is negative, the clinical suspicion supported by CSF studies, magnetic resonance imaging, and electroencephalographic recording, should guide us to start immunotherapeutic treatment early. The early initiation of treatment ensures the reversibility of the neurological disorder in the vast majority of patients.
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Abstract
The realization that autoantibodies can contribute to dysfunction of the brain has brought about a paradigm shift in neurological diseases over the past decade, offering up important novel diagnostic and therapeutic opportunities. Detection of specific autoantibodies to neuronal or glial targets has resulted in a better understanding of central nervous system autoimmunity and in the reclassification of some diseases previously thought to result from infectious, 'idiopathic' or psychogenic causes. The most prominent examples, such as aquaporin 4 autoantibodies in neuromyelitis optica or NMDAR autoantibodies in encephalitis, have stimulated an entire field of clinical and experimental studies on disease mechanisms and immunological abnormalities. Also, these findings inspired the search for additional autoantibodies, which has been very successful to date and has not yet reached its peak. This Review summarizes this rapid development at a point in time where preclinical studies have started delivering fundamental new data for mechanistic understanding, where new technologies are being introduced into this field, and - most importantly - where the first specifically tailored immunotherapeutic approaches are emerging.
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Affiliation(s)
- Harald Prüss
- German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany.
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, Berlin, Germany.
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32
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Park JM, Kim Y, Choi S. Multidisciplinary Rehabilitation for Relapsing Myelin Oligodendrocyte Glycoprotein Antibody-associated Disease: A Case Report. BRAIN & NEUROREHABILITATION 2021; 15:e9. [PMID: 36743842 PMCID: PMC9833465 DOI: 10.12786/bn.2022.15.e9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 11/08/2022] Open
Abstract
Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is an inflammatory central nervous system disease that is driven by antibodies of the immunoglobulin G1 class. MOGAD has recently been recognized as an autoimmune disease; therefore, little is known about its rehabilitation. Here, we present a case of MOGAD that showed significant recovery after rehabilitation. A 58-year-old woman developed weakness in all extremities, dysarthria, and dysphagia. She visited the neurology department, and early brain and spine magnetic resonance imaging showed multifocal high intensity in the subcortical and periventricular white matter and the cervical cord. The patient's serum tested positive for anti-MOG antibodies. She was diagnosed with MOGAD and received intravenous steroid pulse therapy. After pharmacologic therapy, the patient was transferred to the rehabilitation department. Initially, her Functional Independence Measure (FIM) motor score was 26, allowing her to stand independently for only a few seconds. After 5 weeks of rehabilitation involving physical therapy, occupational therapy, and balance training, her FIM motor score improved to 60. However, 4 months after discharge, the disease relapsed with symptoms of motor weakness in all extremities, and steroid treatment was initiated. On the second admission, her FIM motor score was 42, but after continuous multidisciplinary rehabilitation, it improved to 76. Computerized cognitive therapy improved her cognitive function, from a Korean version of the Mini-Mental State Examination score of 23 on the first admission to 30 on final discharge. Since MOGAD is a relapsing disease, a favorable outcome can be achieved with continuous monitoring and multidisciplinary, symptom-specific rehabilitation.
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Affiliation(s)
- Jong Mi Park
- Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Yongwook Kim
- Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Soojin Choi
- Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
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Lopez JA, Houston SD, Tea F, Merheb V, Lee FXZ, Smith S, McDonald D, Zou A, Liyanage G, Pilli D, Denkova M, Lechner-Scott J, van der Walt A, Barnett MH, Reddel SW, Broadley S, Ramanathan S, Dale RC, Brown DA, Brilot F. Validation of a Flow Cytometry Live Cell-Based Assay to Detect Myelin Oligodendrocyte Glycoprotein Antibodies for Clinical Diagnostics. J Appl Lab Med 2021; 7:12-25. [PMID: 34718586 DOI: 10.1093/jalm/jfab101] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/29/2021] [Indexed: 11/13/2022]
Abstract
BACKGROUND Myelin oligodendrocyte glycoprotein antibodies (MOG Ab) are essential in the diagnosis of MOG Ab-associated disease (MOGAD). Live cell-based assays (CBAs) are the gold standard for MOG Ab detection with improved sensitivity and specificity over fixed CBAs. A number of testing centers have used flow cytometry for its high throughput and quantitative utility. Presently, there is increasing demand to translate these research-based methods into an accredited routine diagnostic setting. METHODS A flow cytometry live CBA was used to detect MOG Ab in patients with demyelination. Serostatuses were compared between a research-based assay and a streamlined diagnostic assay. Inter-laboratory validation of the streamlined assay was performed in an accredited diagnostic laboratory. Further streamlining was performed by introducing a borderline serostatus range and reducing the number of controls used to determine the positivity threshold. RESULTS High serostatus agreement (98%-100%) was observed between streamlined and research-based assays. Intra- and inter-assay imprecision was improved in the streamlined assay (mean intra- and inter-assay CV = 7.3% and 27.8%, respectively) compared to the research-based assay (mean intra- and inter-assay CV = 11.8% and 33.6%, respectively). Borderline positive and clear positive serostatuses were associated with confirmed phenotypes typical of MOGAD. Compared to using 24 controls, robust serostatus classification was observed when using 13 controls without compromising analytical performance (93%-98.5% agreement). CONCLUSIONS Flow cytometry live CBAs show robust utility in determining MOG Ab serostatus. Streamlining and standardizing use of this assay for diagnostics would improve the accuracy and reliability of routine testing to aid diagnosis and treatment of patients with demyelination.
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Affiliation(s)
- Joseph A Lopez
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Samuel D Houston
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,School of Biomedical Engineering, The University of Sydney, Sydney, Australia
| | - Fiona Tea
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Vera Merheb
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia
| | - Fiona X Z Lee
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia
| | - Sandy Smith
- New South Wales Health Pathology, Institute of Clinical Pathology and Medical Research, Westmead Hospital, Sydney, Australia
| | - David McDonald
- New South Wales Health Pathology, Institute of Clinical Pathology and Medical Research, Westmead Hospital, Sydney, Australia
| | - Alicia Zou
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Ganesha Liyanage
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Deepti Pilli
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Martina Denkova
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Jeannette Lechner-Scott
- Hunter Medical Research Institute, Faculty of Medicine and Public Health, The University of Newcastle, Department of Neurology, John Hunter Hospital, Newcastle, Australia
| | - Anneke van der Walt
- Department of Neurosciences, Central Clinical School, Monash University, Melbourne, Australia
| | | | - Stephen W Reddel
- Brain and Mind Centre, The University of Sydney, Sydney, Australia.,Department of Neurology, Concord Repatriation General Hospital, Sydney, Australia
| | - Simon Broadley
- Menzies Health Institute Queensland, Gold Coast Campus, Griffith University Southport, Australia.,Department of Neurology, Gold Coast University Hospital, Southport, Australia
| | - Sudarshini Ramanathan
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,Department of Neurology, Concord Repatriation General Hospital, Sydney, Australia.,Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Russell C Dale
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Brain and Mind Centre, The University of Sydney, Sydney, Australia
| | - David A Brown
- New South Wales Health Pathology, Institute of Clinical Pathology and Medical Research, Westmead Hospital, Sydney, Australia.,Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Westmead Institute for Medical Research, Sydney, Australia
| | - Fabienne Brilot
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, Australia.,Specialty of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Brain and Mind Centre, The University of Sydney, Sydney, Australia
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Mahapure KS, Prabhune AS, Chouvhan AV. COVID-19-Associated Acute Disseminated Encephalomyelitis: A Systematic Review. Asian J Neurosurg 2021; 16:457-469. [PMID: 34660355 PMCID: PMC8477843 DOI: 10.4103/ajns.ajns_406_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/29/2021] [Accepted: 05/19/2021] [Indexed: 11/06/2022] Open
Abstract
Objective: The objective of this study was to provide an overview of acute disseminating encephalomyelitis, a potential and serious complication of COVID-19. Methods: Three primary databases were used, PubMed, LitCovid, and WHO. The final review articles reported acute disseminated encephalomyelitis (ADEM) in COVID-19-positive patients and were full-text, peer-reviewed articles. Articles which did not have patient data such as in vitro studies and articles with unclear inference were excluded. Results: Out of 21 cases of ADEM, the diagnosis of severe acute respiratory syndrome-coronavirus 2 was confirmed in 18 and suspected in 3. Among the neurological symptoms, altered consciousness was most common (7/21), followed by anosmia (3), paraplegia (3/21), brain stem involvement (3/21), sphincter involvement (2/21), and quadriplegia (1/21). Raised inflammatory markers were most commonly seen in 9/17. Central nervous system imaging was abnormal in 19 cases and unavailable in 2 cases. Fifteen patients were treated with corticosteroids, 11 patients received intravenous immunoglobulin, while 3 patients received convalescent plasma. Two patients needed surgical intervention. Complications included seizures (1), acute kidney injury and septicemic shock (1), raised intracranial pressure (1), and supraventricular tachycardia secondary to hydroxychloroquine (1). One patient recovered completely and one had good recovery with mild deficits. Thirteen patients had incomplete recovery with residual neurological deficit while three patients died as the consequence of the disease. Conclusion: The physicians and neurosurgeons should be diligent while treating the COVID-19 patients with neurological manifestations and include ADEM as a differential diagnosis and stress on early diagnosis and treatment to reduce mortality and achieve satisfactory clinical outcome.
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Affiliation(s)
- Kiran Sunil Mahapure
- Department of Plastic Surgery, KAHER J N Medical College, Belgaum, Karnataka, India
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Potential Biomarkers Associated with Multiple Sclerosis Pathology. Int J Mol Sci 2021; 22:ijms221910323. [PMID: 34638664 PMCID: PMC8508638 DOI: 10.3390/ijms221910323] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/21/2021] [Accepted: 09/23/2021] [Indexed: 12/15/2022] Open
Abstract
Multiple sclerosis (MS) is a complex disease of the central nervous system (CNS) that involves an intricate and aberrant interaction of immune cells leading to inflammation, demyelination, and neurodegeneration. Due to the heterogeneity of clinical subtypes, their diagnosis becomes challenging and the best treatment cannot be easily provided to patients. Biomarkers have been used to simplify the diagnosis and prognosis of MS, as well as to evaluate the results of clinical treatments. In recent years, research on biomarkers has advanced rapidly due to their ability to be easily and promptly measured, their specificity, and their reproducibility. Biomarkers are classified into several categories depending on whether they address personal or predictive susceptibility, diagnosis, prognosis, disease activity, or response to treatment in different clinical courses of MS. The identified members indicate a variety of pathological processes of MS, such as neuroaxonal damage, gliosis, demyelination, progression of disability, and remyelination, among others. The present review analyzes biomarkers in cerebrospinal fluid (CSF) and blood serum, the most promising imaging biomarkers used in clinical practice. Furthermore, it aims to shed light on the criteria and challenges that a biomarker must face to be considered as a standard in daily clinical practice.
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Marignier R, Hacohen Y, Cobo-Calvo A, Pröbstel AK, Aktas O, Alexopoulos H, Amato MP, Asgari N, Banwell B, Bennett J, Brilot F, Capobianco M, Chitnis T, Ciccarelli O, Deiva K, De Sèze J, Fujihara K, Jacob A, Kim HJ, Kleiter I, Lassmann H, Leite MI, Linington C, Meinl E, Palace J, Paul F, Petzold A, Pittock S, Reindl M, Sato DK, Selmaj K, Siva A, Stankoff B, Tintore M, Traboulsee A, Waters P, Waubant E, Weinshenker B, Derfuss T, Vukusic S, Hemmer B. Myelin-oligodendrocyte glycoprotein antibody-associated disease. Lancet Neurol 2021; 20:762-772. [PMID: 34418402 DOI: 10.1016/s1474-4422(21)00218-0] [Citation(s) in RCA: 235] [Impact Index Per Article: 78.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 06/07/2021] [Accepted: 07/01/2021] [Indexed: 10/20/2022]
Abstract
Myelin-oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is a recently identified autoimmune disorder that presents in both adults and children as CNS demyelination. Although there are clinical phenotypic overlaps between MOGAD, multiple sclerosis, and aquaporin-4 antibody-associated neuromyelitis optica spectrum disorder (NMOSD) cumulative biological, clinical, and pathological evidence discriminates between these conditions. Patients should not be diagnosed with multiple sclerosis or NMOSD if they have anti-MOG antibodies in their serum. However, many questions related to the clinical characterisation of MOGAD and pathogenetic role of MOG antibodies are still unanswered. Furthermore, therapy is mainly based on standard protocols for aquaporin-4 antibody-associated NMOSD and multiple sclerosis, and more evidence is needed regarding how and when to treat patients with MOGAD.
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Affiliation(s)
- Romain Marignier
- Service de Neurologie, Sclérose en Plaques, Pathologies de la Myéline et Neuro-Inflammation, and Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Bron, France; Centre des Neurosciences de Lyon, INSERM 1028 et CNRS UMR5292, Lyon, France; Université Claude Bernard Lyon 1, Lyon, France.
| | - Yael Hacohen
- Queen Square Multiple Sclerosis Centre, UCL Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - Alvaro Cobo-Calvo
- Centre d'Esclerosi Múltiple de Catalunya, Department of Neurology/Neuroimmunology, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Anne-Katrin Pröbstel
- Neurologic Clinic and Policlinic and Research Center for Clinical Neuroimmunology and Neuroscience, Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Orhan Aktas
- Medical Faculty, Department of Neurology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Harry Alexopoulos
- Neuroimmunology Unit, Department of Pathophysiology, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria-Pia Amato
- IRCCS Fondazione Don Carlo Gnocchi, University of Florence, Florence, Italy
| | - Nasrin Asgari
- Institute of Regional Health Research and Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Brenda Banwell
- Division of Child Neurology, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Neurology and Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Jeffrey Bennett
- Department of Neurology and Department of Ophthalmology, Programs in Neuroscience and Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Fabienne Brilot
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Brain and Mind Centre and School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Marco Capobianco
- Regional Multiple Sclerosis Centre, Department of Neurology, University Hospital San Luigi, Orbassano, Italy
| | - Tanuja Chitnis
- Department of Pediatric Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Olga Ciccarelli
- Queen Square Multiple Sclerosis Centre, UCL Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - Kumaran Deiva
- Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital Bicêtre, Pediatric Neurology Department, National Referral Center for Rare Inflammatory Brain and Spinal Diseases, Université Paris-Sud, and UMR 1184-CEA-IDMIT, Center for Immunology of Viral Infections and Autoimmune Diseases, Le Kremlin Bicêtre, France
| | - Jérôme De Sèze
- Department of Neurology, Strasbourg University Hospital and Clinical Investigation Center, INSERM 1434, Strasbourg, France
| | - Kazuo Fujihara
- Department of Multiple Sclerosis Therapeutics, Fukushima Medical University School of Medicine Koriyama, Japan; Multiple Sclerosis and Neuromyelitis Optica Center, Southern TOHOKU Research Institute for Neuroscience, Koriyama, Japan
| | - Anu Jacob
- Division of Multiple Sclerosis and Autoimmune Neurology, Neurological Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates; Walton Centre National Health Service Trust, Liverpool, UK
| | - Ho Jin Kim
- Department of Neurology, Research Institute and Hospital of National Cancer Center, Goyang, Korea
| | - Ingo Kleiter
- Marianne-Strauß-Klinik, Behandlungszentrum Kempfenhausen für Multiple Sklerose Kranke, Berg, Germany; Department of Neurology, Ruhr-University Bochum, Bochum, Germany
| | - Hans Lassmann
- Department of Neuroimmunology, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Maria-Isabel Leite
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Christopher Linington
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK
| | - Edgar Meinl
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig Maximilian University Munich, Germany
| | - Jacqueline Palace
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Friedemann Paul
- NeuroCure Clinical Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, and Experimental and Clinical Research Center, Max Delbrueck Center for Molecular Medicine and Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Axel Petzold
- Moorfields Eye Hospital and National Hospital for Neurology and Neurosurgery, London, UK; University College London Queen Square Institute of Neurology, London, UK; National Institute for Health Research Biomedical Research Centre at Moorfields Eye Hospital and University College London Institute of Ophthalmology, London, UK
| | - Sean Pittock
- Department of Neurology and Laboratory Medicine and Pathology, and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Markus Reindl
- Clinical Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Douglas Kazutoshi Sato
- Brain Institute of Rio Grande do Sul and School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Krzysztof Selmaj
- University of Warmia and Mazury, Olsztyn, Poland; Center of Neurology, Łódź, Poland
| | - Aksel Siva
- Istanbul University-Cerrahpasa, Cerrahpasa School of Medicine, Department of Neurology, Istanbul, Turkey
| | - Bruno Stankoff
- Sorbonne Université, Paris Brain Institute, ICM, CNRS, Inserm, and Saint Antoine Hospital, APHP, Paris, France
| | - Mar Tintore
- Centre d'Esclerosi Múltiple de Catalunya, Department of Neurology/Neuroimmunology, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Anthony Traboulsee
- Division of Neurology, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Patrick Waters
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Emmanuelle Waubant
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA
| | - Brian Weinshenker
- Department of Neurology and Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | - Tobias Derfuss
- Neurologic Clinic and Policlinic and Research Center for Clinical Neuroimmunology and Neuroscience, Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Sandra Vukusic
- Service de Neurologie, Sclérose en Plaques, Pathologies de la Myéline et Neuro-Inflammation, and Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hôpital Neurologique Pierre Wertheimer, Bron, France; Centre des Neurosciences de Lyon, INSERM 1028 et CNRS UMR5292, Lyon, France; Université Claude Bernard Lyon 1, Lyon, France
| | - Bernhard Hemmer
- Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; Munich Cluster for Systems Neurology, Munich, Germany
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Eichinger A, Neumaier I, Skerra A. The extracellular region of bovine milk butyrophilin exhibits closer structural similarity to human myelin oligodendrocyte glycoprotein than to immunological BTN family receptors. Biol Chem 2021; 402:1187-1202. [PMID: 34342946 DOI: 10.1515/hsz-2021-0122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 06/17/2021] [Indexed: 11/15/2022]
Abstract
Bovine butyrophilin (BTN1A1) is an abundant type I transmembrane glycoprotein exposed on the surface of milk fat globules. We have solved the crystal structure of its extracellular region via multiple wavelength anomalous dispersion after incorporation of selenomethionine into the bacterially produced protein. The butyrophilin ectodomain exhibits two subdomains with immunoglobulin fold, each comprising a β-sandwich with a central disulfide bridge as well as one N-linked glycosylation. The fifth Cys residue at position 193 is unpaired and prone to forming disulfide crosslinks. The apparent lack of a ligand-binding site or receptor activity suggests a function predominantly as hydrophilic coat protein to prevent coagulation of the milk fat droplets. While there is less structural resemblance to members of the human butyrophilin family such as BTN3A, which play a role as immune receptors, the N-terminal bovine butyrophilin subdomain shows surprising similarity to the human myelin oligodendrocyte glycoprotein, a protein exposed on the surface of myelin sheaths. Thus, our study lends structural support to earlier hypotheses of a correlation between the consumption of cow milk and prevalence of neurological autoimmune diseases and may offer guidance for the breeding of cattle strains that express modified butyrophilin showing less immunological cross-reactivity.
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Affiliation(s)
- Andreas Eichinger
- Lehrstuhl für Biologische Chemie, Technische Universität München, Emil-Erlenmeyer-Forum 5, D-85354Freising, Germany
| | - Irmgard Neumaier
- Lehrstuhl für Biologische Chemie, Technische Universität München, Emil-Erlenmeyer-Forum 5, D-85354Freising, Germany
| | - Arne Skerra
- Lehrstuhl für Biologische Chemie, Technische Universität München, Emil-Erlenmeyer-Forum 5, D-85354Freising, Germany
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38
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Lopez JA, Denkova M, Ramanathan S, Dale RC, Brilot F. Pathogenesis of autoimmune demyelination: from multiple sclerosis to neuromyelitis optica spectrum disorders and myelin oligodendrocyte glycoprotein antibody-associated disease. Clin Transl Immunology 2021; 10:e1316. [PMID: 34336206 PMCID: PMC8312887 DOI: 10.1002/cti2.1316] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/20/2021] [Accepted: 07/01/2021] [Indexed: 12/16/2022] Open
Abstract
Autoimmunity plays a significant role in the pathogenesis of demyelination. Multiple sclerosis (MS), neuromyelitis optica spectrum disorders (NMOSD) and myelin oligodendrocyte glycoprotein antibody‐associated disease (MOGAD) are now recognised as separate disease entities under the amalgam of human central nervous system demyelinating disorders. While these disorders share inherent similarities, investigations into their distinct clinical presentations and lesion pathologies have aided in differential diagnoses and understanding of disease pathogenesis. An interplay of various genetic and environmental factors contributes to each disease, many of which implicate an autoimmune response. The pivotal role of the adaptive immune system has been highlighted by the diagnostic autoantibodies in NMOSD and MOGAD, and the presence of autoreactive lymphocytes in MS lesions. While a number of autoantigens have been proposed in MS, recent emphasis on the contribution of B cells has shed new light on the well‐established understanding of T cell involvement in pathogenesis. This review aims to synthesise the clinical characteristics and pathological findings, discuss existing and emerging hypotheses regarding the aetiology of demyelination and evaluate recent pathogenicity studies involving T cells, B cells, and autoantibodies and their implications in human demyelination.
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Affiliation(s)
- Joseph A Lopez
- Brain Autoimmunity Group Kids Neuroscience Centre Kids Research at the Children's Hospital at Westmead Sydney NSW Australia.,Specialty of Child and Adolescent Health Faculty of Medicine and Health The University of Sydney Sydney NSW Australia
| | - Martina Denkova
- Brain Autoimmunity Group Kids Neuroscience Centre Kids Research at the Children's Hospital at Westmead Sydney NSW Australia.,School of Medical Sciences Faculty of Medicine and Health The University of Sydney Sydney NSW Australia
| | - Sudarshini Ramanathan
- Brain Autoimmunity Group Kids Neuroscience Centre Kids Research at the Children's Hospital at Westmead Sydney NSW Australia.,Sydney Medical School Faculty of Medicine and Health The University of Sydney Sydney NSW Australia.,Department of Neurology Concord Hospital Sydney NSW Australia
| | - Russell C Dale
- Brain Autoimmunity Group Kids Neuroscience Centre Kids Research at the Children's Hospital at Westmead Sydney NSW Australia.,Specialty of Child and Adolescent Health Faculty of Medicine and Health The University of Sydney Sydney NSW Australia.,Sydney Medical School Faculty of Medicine and Health The University of Sydney Sydney NSW Australia.,Brain and Mind Centre The University of Sydney Sydney NSW Australia
| | - Fabienne Brilot
- Brain Autoimmunity Group Kids Neuroscience Centre Kids Research at the Children's Hospital at Westmead Sydney NSW Australia.,Specialty of Child and Adolescent Health Faculty of Medicine and Health The University of Sydney Sydney NSW Australia.,School of Medical Sciences Faculty of Medicine and Health The University of Sydney Sydney NSW Australia.,Brain and Mind Centre The University of Sydney Sydney NSW Australia
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39
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Goenka A, Chikkannaiah M, Kumar G. Pediatric auto-immune encephalitis. Curr Probl Pediatr Adolesc Health Care 2021; 51:101031. [PMID: 34272178 DOI: 10.1016/j.cppeds.2021.101031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Pediatric Auto-Immune Encephalitis (PAE) is a neuro-inflammatory disorder with a varied presentation. The discovery of the Anti NMDA receptor and other antibodies as the causative agents of PAE, has led to an increased need for guidelines for diagnosis and management of these disorders. PAE remains a challenging group of disorders due to their varying presentations and etiology with a prolonged clinical course. The wide spectrum of clinical symptoms involves altered mental status, movement disorders, acute behavioral changes, psychosis, delirium, seizures, and insomnia. This group of disorders was recently recognized in the children. This review provides clinicians with information on the most common PAE disorders, the spectrum of their clinical presentation, diagnostic tests and treatment protocols based on the current literature.
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Affiliation(s)
- Ajay Goenka
- Dayton Children Hospital, Wright State University Boonshoft School of Medicine, 1 Children Plaza, Dayton Ohio 45404.
| | - Mahesh Chikkannaiah
- Dayton Children Hospital, Wright State University Boonshoft School of Medicine, 1 Children Plaza, Dayton Ohio 45404.
| | - Gogi Kumar
- Dayton Children Hospital, Wright State University Boonshoft School of Medicine, 1 Children Plaza, Dayton Ohio 45404.
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40
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Horellou P, de Chalus A, Giorgi L, Leroy C, Chrétien P, Hacein-Bey-Abina S, Bourgeois C, Mariette X, Serguera C, Le Grand R, Deiva K. Regulatory T Cells Increase After rh-MOG Stimulation in Non-Relapsing but Decrease in Relapsing MOG Antibody-Associated Disease at Onset in Children. Front Immunol 2021; 12:679770. [PMID: 34220827 PMCID: PMC8243969 DOI: 10.3389/fimmu.2021.679770] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/31/2021] [Indexed: 11/13/2022] Open
Abstract
Background Myelin oligodendrocytes glycoprotein (MOG) antibody-associated disease (MOGAD) represent 25% of pediatric acquired demyelinating syndrome (ADS); 40% of them may relapse, mimicking multiple sclerosis (MS), a recurrent and neurodegenerative ADS, which is MOG-Abs negative. Aims To identify MOG antigenic immunological response differences between MOGAD, MS and control patients, and between relapsing versus non-relapsing subgroups of MOGAD. Methods Three groups of patients were selected: MOGAD (n=12 among which 5 relapsing (MOGR) and 7 non-relapsing (MOGNR)), MS (n=10) and control patients (n=7). Peripheral blood mononuclear cells (PBMC) collected at the time of the first demyelinating event were cultured for 48 h with recombinant human (rh)-MOG protein (10 μg/ml) for a specific stimulation or without stimulation as a negative control. The T cells immunophenotypes were analyzed by flow cytometry. CD4+ T cells, T helper (Th) cells including Th1, Th2, and Th17 were analyzed by intracellular staining of cytokines. Regulatory T cells (Tregs, Foxp3+), CD45RA-Foxp3+ Tregs and subpopulation naive Tregs (CD45RA+Foxp3int), effector Tregs (CD45RA-Foxp3high) and non-suppressive Tregs (CD45RA-Foxp3int) proportions were determined. Results The mean onset age of each group, ranging from 9.9 to 13.8, and sex ratio, were similar between MOGR, MOGNR, MS and control patients as analyzed by one-way ANOVA and Chi-square test. When comparing unstimulated to rh-MOG stimulated T cells, a significant increase in the proportion of Th2 and Th17 cells was observed in MOGAD. Increase of Th17 cells was significant in MOGNR (means: 0.63 ± 0.15 vs. 1.36 ± 0.43; Wilcoxon-test p = 0.03) but not in MOGR. CD4+ Tregs were significantly increased in MOGNR (means: 3.51 ± 0.7 vs. 4.59 ± 1.33; Wilcoxon-test p = 0.046) while they decreased in MOGR. CD45RA-Foxp3+ Tregs were significantly decreased in MOGR (means: 2.37 ± 0.23 vs. 1.99 ± 0.17; paired t-test p = 0.021), but not in MOGNR. MOGR showed the highest ratio of effector Tregs/non suppressive-Tregs, which was significantly higher than in MOGNR. Conclusions Our findings suggest that CD4+ Th2 and Th17 cells are involved in the pathophysiology of MOGAD in children. The opposite response of Tregs to rh-MOG in MOGNR, where CD4+ Tregs increased, and in MOGR, where CD45RA-Foxp3+ Tregs decreased, suggests a probable loss of tolerance toward MOG autoantigen in MOGR which may explain relapses in this recurrent pediatric autoimmune disease.
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Affiliation(s)
- Philippe Horellou
- Université Paris-Saclay, CEA, INSERM UMR 1184, Le Kremlin Bicêtre, France
| | - Aliénor de Chalus
- Université Paris-Saclay, CEA, INSERM UMR 1184, Le Kremlin Bicêtre, France.,Assistance Publique-Hôpitaux de Paris, Paris-Saclay University Hospitals, Bicêtre Hospital, Pediatric Neurology Department, Le Kremlin Bicêtre, France
| | - Laetitia Giorgi
- Université Paris-Saclay, CEA, INSERM UMR 1184, Le Kremlin Bicêtre, France.,Assistance Publique-Hôpitaux de Paris, Paris-Saclay University Hospitals, Bicêtre Hospital, Pediatric Neurology Department, Le Kremlin Bicêtre, France
| | - Carole Leroy
- Université Paris-Saclay, CEA, INSERM UMR 1184, Le Kremlin Bicêtre, France.,Assistance Publique-Hôpitaux de Paris, Paris-Saclay University Hospitals, Bicêtre Hospital, Pediatric Neurology Department, Le Kremlin Bicêtre, France
| | - Pascale Chrétien
- Clinical Immunology Laboratory, Groupe Hospitalier Universitaire Paris-Sud, Hôpital Kremlin-Bicêtre, Assistance Publique-Hôpitaux de Paris, Le-Kremlin-Bicêtre, France.,Université de Paris, CNRS, INSERM, UTCBS, Unité des technologies Chimiques et Biologiques pour la Santé, Paris, France
| | - Salima Hacein-Bey-Abina
- Clinical Immunology Laboratory, Groupe Hospitalier Universitaire Paris-Sud, Hôpital Kremlin-Bicêtre, Assistance Publique-Hôpitaux de Paris, Le-Kremlin-Bicêtre, France.,Université de Paris, CNRS, INSERM, UTCBS, Unité des technologies Chimiques et Biologiques pour la Santé, Paris, France
| | | | - Xavier Mariette
- Université Paris-Saclay, CEA, INSERM UMR 1184, Le Kremlin Bicêtre, France.,Department of Rheumatology, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| | - Ché Serguera
- Institut du Cerveau (ICM), Hôpital Pitié-Salpêtrière, Paris, France
| | - Roger Le Grand
- Université Paris-Saclay, CEA, INSERM UMR 1184, Le Kremlin Bicêtre, France
| | - Kumaran Deiva
- Université Paris-Saclay, CEA, INSERM UMR 1184, Le Kremlin Bicêtre, France.,Assistance Publique-Hôpitaux de Paris, Paris-Saclay University Hospitals, Bicêtre Hospital, Pediatric Neurology Department, Le Kremlin Bicêtre, France.,National Referral Center for Rare Inflammatory and Auto-Immune Brain and Spinal Diseases (MIRCEM), Pediatric Neurology Department, Hôpital Bicêtre, AP-HP, Le Kremlin Bicêtre, France
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Xu J, Liu L, Xiong J, Zhang L, Huang P, Tang L, Xiao Y, Li X, Li J, Luo Y, Li H, Mao D, Liu L. The Clinical, Radiologic, and Prognostic Differences Between Pediatric and Adult Patients With Myelin Oligodendrocyte Glycoprotein Antibody-Associated Encephalomyelitis. Front Neurol 2021; 12:679430. [PMID: 34093424 PMCID: PMC8173107 DOI: 10.3389/fneur.2021.679430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 04/16/2021] [Indexed: 11/24/2022] Open
Abstract
Purpose: To evaluate the clinical differences between pediatric and adult patients with myelin oligodendrocyte glycoprotein antibody-associated encephalomyelitis (MOG-EM). Methods: We retrospectively reviewed the clinical features of pediatric and adult patients with MOG-EM in our center between November 2015 and October 2020. Results: Twenty-eight pediatric patients and 25 adults were admitted to our study. Bilateral optic neuritis (BON) was the most common initial phenotype in the pediatric group but less common in the adult group (28.57 vs. 0%, p = 0.0119). Almost half of the adult patients presented with neuromyelitis optica spectrum disease (NMOSD), which was less prevalent among the pediatrics (48 vs. 21.43%, p = 0.0414). Visual impairment was the most common symptom in both groups during the initial attack (pediatric group, 39.29%; adult group, 64%) and throughout the full course (pediatric group, 57.14%; adult group, 72%). More pediatric patients suffered from fever than adult patients at onset (pediatric group, 28.57%; adult group, 4%; p = 0.0442) and throughout the full course (pediatric group, 39.29%; adult group, 12%; p = 0.0245). Multiple patchy lesions in subcortical white matter (pediatric group, 40.74%; adult group, 45%), periventricular (pediatric group, 25.93%; adult group, 35%), infratentorial (pediatric group, 18.52%; adult group, 30%) and deep gray matter (pediatric group, 25.93%; adult group, 20%) were frequent in all cases, no significant difference was found between the two groups, while bilateral optic nerve involvement was more frequent in pediatric group (61.54 vs. 14.29%, p = 0.0042) and unilateral optic nerve involvement was higher in adult group (64.29 vs. 15.38%, p = 0.0052). At the last follow-up, adult patients had a higher average EDSS score (median 1.0, range 0–3) than pediatrics (median 0.0, range 0–3), though not significant (p = 0.0752). Patients aged 0–9 years (61.54%) and 10–18 years (70%), and patients presenting with encephalitis/meningoencephalitis (100%) and ADEM (75%) were more likely to recover fully. Conclusions: Visual impairment was the dominant symptom in both pediatric and adult patients, while fever was more frequent in pediatric patients. Data suggested that BON and bilateral optic nerve involvement were more common in pediatric cases whereas NMOSD and unilateral optic nerve involvement were more prevalent in adults. The younger patients and patients presenting with encephalitis/meningoencephalitis and ADEM tended to recover better.
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Affiliation(s)
- Jie Xu
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Lingjuan Liu
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jie Xiong
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Lu Zhang
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Peng Huang
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Li Tang
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yangyang Xiao
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xingfang Li
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jian Li
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yingying Luo
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Huiling Li
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Dingan Mao
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Liqun Liu
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Children's Brain Development and Brain Injury Research Office, The Second Xiangya Hospital, Central South University, Changsha, China
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42
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Macrini C, Gerhards R, Winklmeier S, Bergmann L, Mader S, Spadaro M, Vural A, Smolle M, Hohlfeld R, Kümpfel T, Lichtenthaler SF, Franquelim HG, Jenne D, Meinl E. Features of MOG required for recognition by patients with MOG antibody-associated disorders. Brain 2021; 144:2375-2389. [PMID: 33704436 DOI: 10.1093/brain/awab105] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 12/21/2020] [Accepted: 01/08/2021] [Indexed: 01/03/2023] Open
Abstract
Antibodies (Abs) to myelin oligodendrocyte glycoprotein (MOG) define a distinct disease entity. Here we aimed to understand essential structural features of MOG required for recognition by autoantibodies from patients. We produced the N-terminal part of MOG in a conformationally correct form; this domain was insufficient to identify patients with MOG-Abs by ELISA even after site-directed binding. This was neither due to a lack of lipid embedding nor to a missing putative epitope at the C-terminus, which we confirmed to be an intracellular domain. When MOG was displayed on transfected cells, patients with MOG-Abs recognized full-length MOG much better than its N-terminal part with the first hydrophobic domain (p < 0.0001). Even antibodies affinity-purified with the extracellular part of MOG recognized full-length MOG better than the extracellular part of MOG after transfection. The second hydrophobic domain of MOG enhanced the recognition of the extracellular part of MOG by antibodies from patients as seen with truncated variants of MOG. We confirmed the pivotal role of the second hydrophobic domain by fusing the intracellular part of MOG from the evolutionary distant opossum to the human extracellular part; the chimeric construct restored the antibody-binding completely. Further, we found that in contrast to 8-18C5, MOG-Abs from patients bound preferentially as F(ab')2 rather than Fab. It was previously found that bivalent binding of human IgG1, the prominent isotype of MOG-Abs, requires that its target antigen is displayed at a distance of 13-16 nm. We found that, upon transfection, molecules of MOG did not interact so closely to induce a Förster resonance energy transfer (FRET) signal, indicating that they are more than 6 nm apart. We propose that the intracellular part of MOG holds the monomers apart at a suitable distance for bivalent binding; this could explain why a cell-based assay is needed to identify MOG-Abs. Our finding that MOG-Abs from most patients require bivalent binding has implications for understanding the pathogenesis of MOG-antibody-associated-disorders. Since bivalently bound antibodies have been reported to only poorly bind C1q, we speculate that the pathogenicity of MOG-Abs is mostly mediated by other mechanisms than complement activation. Therefore, therapeutic inhibition of complement activation should be less efficient in MOG-Ab associated disorders than in patients with Abs to aquaporin-4.
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Affiliation(s)
- Caterina Macrini
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Ramona Gerhards
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Stephan Winklmeier
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Lena Bergmann
- Physiological Chemistry, Biomedical Center, Ludwig-Maximilians-Universität, 82152 Munich, Germany
| | - Simone Mader
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Melania Spadaro
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Atay Vural
- Department of Neurology, Koc University School of Medicine, 34450 Istanbul, Turkey
| | - Michaela Smolle
- Physiological Chemistry, Biomedical Center, Ludwig-Maximilians-Universität, 82152 Munich, Germany
- BioPhysics Core Facility, Biomedical Center, Ludwig-Maximilians-Universität, 82152 Munich, Germany
| | - Reinhard Hohlfeld
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Tania Kümpfel
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
| | - Stefan F Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE) Munich and Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
| | - Henri G Franquelim
- Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, 82152 Munich, Germany
| | - Dieter Jenne
- Institute of Lung Biology and Disease (ILBD), Comprehensive Pneumology Center (CPC), 81377 Munich, Germany
| | - Edgar Meinl
- Institute of Clinical Neuroimmunology, Biomedical Center and University Hospitals, Ludwig-Maximilians-Universität München, 82152 Munich, Germany
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Lee YJ, Nam SO, Ko A, Kong J, Byun SY. Myelin oligodendrocyte glycoprotein antibody-associated disorders: clinical spectrum, diagnostic evaluation, and treatment options. Clin Exp Pediatr 2021; 64:103-110. [PMID: 32403899 PMCID: PMC7940088 DOI: 10.3345/cep.2019.01305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/28/2020] [Indexed: 11/27/2022] Open
Abstract
Inflammatory or immune-mediated demyelinating central nervous system (CNS) syndromes include a broad spectrum of clinical phenotype and different overlapping diseases. Antibodies against myelin oligodendrocyte glycoprotein (MOG-Ab) have been found in some cases of these demyelinating diseases, particularly in children. MOG-Ab is associated with a wider clinical phenotype not limited to neuromyelitis optica spectrum disorder, with most patients presenting with optic neuritis, acute disseminated encephalomyelitis (ADEM) or ADEM-like encephalitis with brain demyelinating lesions, and/or myelitis. Using specific cell-based assays, MOG-Ab is becoming a potential biomarker of inflammatory demyelinating disorders of the CNS. A humoral immune reaction against MOG was recently found in monophasic diseases and recurrent/multiphasic clinical progression, particularly in pediatric patients. This review summarizes the data regarding MOG-Ab as an impending biological marker for discriminating between these diverse demyelinating CNS diseases and discusses recent developments, clinical applications, and findings regarding the immunopathogenesis of MOG-Ab-associated disorders.
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Affiliation(s)
- Yun-Jin Lee
- Department of Pediatrics, Pusan National University Children's Hospital, Pusan National University College of Medicine, Yangsan, Korea
| | - Sang Ook Nam
- Department of Pediatrics, Pusan National University Children's Hospital, Pusan National University College of Medicine, Yangsan, Korea
| | - Ara Ko
- Department of Pediatrics, Pusan National University Children's Hospital, Pusan National University College of Medicine, Yangsan, Korea
| | - JuHyun Kong
- Department of Pediatrics, Pusan National University Children's Hospital, Pusan National University College of Medicine, Yangsan, Korea
| | - Shin Yun Byun
- Department of Pediatrics, Pusan National University Children's Hospital, Pusan National University College of Medicine, Yangsan, Korea
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Yamakawa M, Watari M, Torii KI, Kuki I, Miharu M, Kawazu M, Mukaino A, Higuchi O, Maeda Y, Ikeda T, Takamatsu K, Tawara N, Nakahara K, Matsuo H, Ueda M, Takahashi T, Nakane S. gAChR antibodies in children and adolescents with acquired autoimmune dysautonomia in Japan. Ann Clin Transl Neurol 2021; 8:790-799. [PMID: 33621398 PMCID: PMC8045944 DOI: 10.1002/acn3.51317] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/21/2021] [Accepted: 01/26/2021] [Indexed: 12/25/2022] Open
Abstract
Objective Patients with acquired autonomic dysfunction may have antibodies specific to the ganglionic nicotinic acetylcholine receptor (gAChR). However, the clinical features of children and adolescents with acquired autonomic dysfunction (AAD) remain unclear. This study aimed to determine the clinical features of pediatric patients with acquired autonomic dysfunction. Methods This study retrospectively examined a series of patients of AAD with serum gAChR antibodies who were referred to our laboratory for antibody testing between January 2012 and April 2019. The study included 200 patients (<20 years, 20 cases; ≥20 years, 175 cases) with clinical features of AAD. Results Upon comparing pediatric and adult patients, we found that antecedent infection and autonomic symptoms at onset with gastrointestinal symptoms occurred more frequently in children with AAD. We confirmed that four children (20.0%) met the diagnostic criteria for postural orthostatic tachycardia syndrome (POTS). A significantly higher number of children than adults had POTS (P = 0.002). In addition, upper GI dysfunction was more prevalent in children than in adults (P = 0.042). In particular, nausea and vomiting occurred in 60.0% of children with AAD and in 21.1% of adults (P < 0.001). The frequency of paralytic ileus was significantly higher in children with AAD (20.0%) relative to adults (6.3%) (P = 0.030). Regarding extra‐autonomic manifestations, encephalopathy was more frequent in children (15.0%) than in adults (1.1%) (P < 0.001). Interpretation Pediatric AAD patients have their own clinical characteristics, and these features may be unique to children and adolescents.
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Affiliation(s)
- Makoto Yamakawa
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Mari Watari
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Ken-Ichi Torii
- Department of Pediatrics, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - Ichiro Kuki
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Masashi Miharu
- Department of Pediatrics, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Momoko Kawazu
- Department of Pediatrics, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - Akihiro Mukaino
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan
| | - Osamu Higuchi
- Department of Clinical Research, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan.,Department of Neuroimmunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yasuhiro Maeda
- Department of Clinical Research, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan.,Department of Neuroimmunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Department of Neurology, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Tokunori Ikeda
- Department of Clinical Investigation (Biostatistics), Kumamoto University Hospital, Kumamoto, Japan
| | - Koutaro Takamatsu
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Nozomu Tawara
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Keiichi Nakahara
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hidenori Matsuo
- Department of Clinical Research, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan.,Department of Neurology, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Mitsuharu Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takao Takahashi
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Shunya Nakane
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan
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45
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Zou A, Ramanathan S, Dale RC, Brilot F. Single-cell approaches to investigate B cells and antibodies in autoimmune neurological disorders. Cell Mol Immunol 2021; 18:294-306. [PMID: 32728203 PMCID: PMC8027387 DOI: 10.1038/s41423-020-0510-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 07/07/2020] [Indexed: 12/18/2022] Open
Abstract
Autoimmune neurological disorders, including neuromyelitis optica spectrum disorder, anti-N-methyl-D-aspartate receptor encephalitis, anti-MOG antibody-associated disorders, and myasthenia gravis, are clearly defined by the presence of autoantibodies against neurological antigens. Although these autoantibodies have been heavily studied for their biological activities, given the heterogeneity of polyclonal patient samples, the characteristics of a single antibody cannot be definitively assigned. This review details the findings of polyclonal serum and CSF studies and then explores the advances made by single-cell technologies to the field of antibody-mediated neurological disorders. High-resolution single-cell methods have revealed abnormalities in the tolerance mechanisms of several disorders and provided further insight into the B cells responsible for autoantibody production. Ultimately, several factors, including epitope specificity and binding affinity, finely regulate the pathogenic potential of an autoantibody, and a deeper appreciation of these factors may progress the development of targeted immunotherapies for patients.
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Affiliation(s)
- Alicia Zou
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW, Australia
- Discipline of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Sudarshini Ramanathan
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW, Australia
- Discipline of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Russell C Dale
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW, Australia
- Discipline of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
- Brain and Mind Centre, The University of Sydney, Sydney, NSW, Australia
| | - Fabienne Brilot
- Brain Autoimmunity Group, Kids Neuroscience Centre, Kids Research at the Children's Hospital at Westmead, Sydney, NSW, Australia.
- Discipline of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.
- Brain and Mind Centre, The University of Sydney, Sydney, NSW, Australia.
- School of Medical Sciences, Discipline of Applied Medical Science, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.
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46
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Ambrosius W, Michalak S, Kozubski W, Kalinowska A. Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease: Current Insights into the Disease Pathophysiology, Diagnosis and Management. Int J Mol Sci 2020; 22:E100. [PMID: 33374173 PMCID: PMC7795410 DOI: 10.3390/ijms22010100] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 12/16/2022] Open
Abstract
Myelin oligodendrocyte glycoprotein (MOG)-associated disease (MOGAD) is a rare, antibody-mediated inflammatory demyelinating disorder of the central nervous system (CNS) with various phenotypes starting from optic neuritis, via transverse myelitis to acute demyelinating encephalomyelitis (ADEM) and cortical encephalitis. Even though sometimes the clinical picture of this condition is similar to the presentation of neuromyelitis optica spectrum disorder (NMOSD), most experts consider MOGAD as a distinct entity with different immune system pathology. MOG is a molecule detected on the outer membrane of myelin sheaths and expressed primarily within the brain, spinal cord and also the optic nerves. Its function is not fully understood but this glycoprotein may act as a cell surface receptor or cell adhesion molecule. The specific outmost location of myelin makes it a potential target for autoimmune antibodies and cell-mediated responses in demyelinating processes. Optic neuritis seems to be the most frequent presenting phenotype in adults and ADEM in children. In adults, the disease course is multiphasic and subsequent relapses increase disability. In children ADEM usually presents as a one-time incident. Luckily, acute immunotherapy is very effective and severe disability (ambulatory and visual) is less frequent than in NMOSD. A critical element of reliable diagnosis is detection of pathogenic serum antibodies MOG with accurate, specific and sensitive methods, preferably with optimized cell-based assay (CBA). MRI imaging can also help in differentiating MOGAD from other neuro-inflammatory disorders. Reports on randomised control trials are limited, but observational open-label experience suggests a role for high-dose steroids and plasma exchange in the treatment of acute attacks, and for immunosuppressive therapies, such as steroids, oral immunosuppressants and rituximab as maintenance treatment. In this review, we present up-to-date clinical, immunological, radiographic, histopathological data concerning MOGAD and summarize the practical aspects of diagnosing and managing patients with this disease.
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Affiliation(s)
- Wojciech Ambrosius
- Department of Neurology, Poznan University of Medical Sciences, 49 Przybyszewskiego Street, 60-355 Poznan, Poland;
| | - Sławomir Michalak
- Department of Neurology, Division of Neurochemistry and Neuropathology, Poznan University of Medical Sciences, 49 Przybyszewskiego Street, 60-355 Poznan, Poland; (S.M.); (A.K.)
| | - Wojciech Kozubski
- Department of Neurology, Poznan University of Medical Sciences, 49 Przybyszewskiego Street, 60-355 Poznan, Poland;
| | - Alicja Kalinowska
- Department of Neurology, Division of Neurochemistry and Neuropathology, Poznan University of Medical Sciences, 49 Przybyszewskiego Street, 60-355 Poznan, Poland; (S.M.); (A.K.)
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Paolilo RB, Deiva K, Neuteboom R, Rostásy K, Lim M. Acute Disseminated Encephalomyelitis: Current Perspectives. CHILDREN-BASEL 2020; 7:children7110210. [PMID: 33153097 PMCID: PMC7692206 DOI: 10.3390/children7110210] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/26/2020] [Accepted: 10/29/2020] [Indexed: 12/14/2022]
Abstract
Acute disseminated encephalomyelitis (ADEM) is an immune-mediated central nervous system (CNS) disorder, characterized by polyfocal symptoms, encephalopathy and typical magnetic resonance imaging (MRI) findings, that especially affects young children. Advances in understanding CNS neuroimmune disorders as well as the association of myelin oligodendrocyte glycoprotein antibody (MOG-Ab) with both monophasic and recurrent forms of ADEM have led to new insights into its definition, management and outcome. In this review, we aim to provide an update based on current epidemiologic, clinical, radiological and immunopathological aspects and clinical outcome of ADEM.
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Affiliation(s)
- Renata Barbosa Paolilo
- Department of Neurology, Hospital das Clínicas, Faculty of Medicine, University of São Paulo (HCFMUSP), São Paulo 05508-060, Brazil;
| | - Kumaran Deiva
- Department of Pediatric Neurology, Assistance Publique-Hôpitaux de Paris, University Hospitals Paris Saclay, Bicêtre Hospital, 72, Rue G Leclerc, 94270 Le Kremlin Bicêtre, France;
- National Reference Centre for Rare Inflammatory Brain and Spinal Diseases, 72, Rue G Leclerc, 94270 Le Kremlin Bicêtre, France
- Inserm UMR 1184, Immunology of Viral Infections and Autoimmune Diseases, 63, R G Péri, 94270 Le Kremlin Bicêtre, France
| | - Rinze Neuteboom
- Department of Neurology, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands;
| | - Kevin Rostásy
- Department of Pediatric Neurology, Vestische Kinder und Jugendklinik, Witten/Herdecke University, 45711 Datteln, Germany;
| | - Ming Lim
- Children’s Neurosciences, Evelina London Children’s Hospital at Guy’s and St Thomas’ NHS Foundation Trust, London SE1 7EH, UK
- King’s Health Partners Academic Health Science Centre, London SE1 9RT, UK
- Faculty of Life Sciences and Medicine, King’s College Hospital, London SE5 9RS, UK
- Correspondence: ; Tel.: +44-020-7188-7188
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48
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Bruijstens AL, Wendel EM, Lechner C, Bartels F, Finke C, Breu M, Flet-Berliac L, de Chalus A, Adamsbaum C, Capobianco M, Laetitia G, Hacohen Y, Hemingway C, Wassmer E, Lim M, Baumann M, Wickström R, Armangue T, Rostasy K, Deiva K, Neuteboom RF. E.U. paediatric MOG consortium consensus: Part 5 - Treatment of paediatric myelin oligodendrocyte glycoprotein antibody-associated disorders. Eur J Paediatr Neurol 2020; 29:41-53. [PMID: 33176999 DOI: 10.1016/j.ejpn.2020.10.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 02/06/2023]
Abstract
In recent years, the understanding about the different clinical phenotypes, diagnostic and prognostic factors of myelin oligodendrocyte glycoprotein-antibody-associated disorders (MOGAD) has significantly increased. However, there is still lack of evidence-based treatment protocols for acute attacks and children with a relapsing course of the disease. Currently used acute and maintenance treatment regimens are derived from other demyelinating central nervous system diseases and are mostly centre-specific. Therefore, this part of the Paediatric European Collaborative Consensus attempts to provide recommendations for acute and maintenance therapy based on clinical experience and evidence available from mainly retrospective studies. In the acute attack, intravenous methylprednisolone (IVMP) leads to a favourable outcome in the majority of patients and can be followed by tapering of oral steroids up to a maximum of three months to maintain the benefit of acute treatment by suppressing disease activity. Intravenous immunoglobulins (IVIG) and plasmapheresis constitute second-line therapies in case of insufficient response to IVMP. After a first relapse, maintenance treatment should be started in order to prevent further relapses and the possibility of permanent sequelae. Four first-line therapies consisting of rituximab (RTX), azathioprine, mycophenolate mofetil or monthly IVIG have been identified by the consensus group. In case of further relapses despite maintenance treatment, the consensus group recommends treatment escalation with RTX or IVIG, followed by combining those two, and ultimately adding maintenance oral steroids. Many open questions remain which need to be addressed in further international prospective evaluation of MOGAD treatment. This international collaboration is essential to expand the state of current knowledge.
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Affiliation(s)
| | - Eva-Maria Wendel
- Department of Paediatrics, Klinikum Stuttgart/Olgahospital, Stuttgart, Germany
| | - Christian Lechner
- Department of Paediatrics, Division of Paediatric Neurology, Medical University of Innsbruck, Austria
| | - Frederik Bartels
- Department of Neurology, Charité - Universitätsmedizin Berlin / Berlin School of Mind and Brain, Humboldt-Universität zu Berlin, Germany
| | - Carsten Finke
- Department of Neurology, Charité - Universitätsmedizin Berlin / Berlin School of Mind and Brain, Humboldt-Universität zu Berlin, Germany
| | - Markus Breu
- Department of Paediatrics and Adolescent Medicine, Division of Paediatric Neurology, Medical University of Vienna, Austria
| | - Lorraine Flet-Berliac
- Department of Paediatric Neurology, Assistance Publique-Hôpitaux de Paris, University Hospitals Paris-Saclay, Bicêtre Hospital and Faculty of Medicine, Paris-Saclay University, Le Kremlin Bicêtre, France
| | - Aliénor de Chalus
- Department of Paediatric Neurology, Assistance Publique-Hôpitaux de Paris, University Hospitals Paris-Saclay, Bicêtre Hospital and Faculty of Medicine, Paris-Saclay University, Le Kremlin Bicêtre, France
| | - Catherine Adamsbaum
- Paediatric Radiology Department, Bicêtre Hospital, Assistance Publique-Hôpitaux de Paris, University Hospitals Paris-Saclay, Bicêtre Hospital and Faculty of Medicine, Paris-Saclay University, Le Kremlin Bicêtre, France
| | - Marco Capobianco
- Department of Neurology and Regional Multiple Sclerosis Centre, University Hospital San Luigi Gonzaga, Orbassano, Italy
| | - Giorgi Laetitia
- Department of Paediatric Neurology, Assistance Publique-Hôpitaux de Paris, University Hospitals Paris-Saclay, Bicêtre Hospital and Faculty of Medicine, Paris-Saclay University, Le Kremlin Bicêtre, France
| | - Yael Hacohen
- Department of Neuroinflammation, Queen Square Multiple Sclerosis Centre, UCL Institute of Neurology / Department of Paediatric Neurology, Great Ormond Street Hospital for Children, London, UK
| | - Cheryl Hemingway
- Department of Paediatric Neurology, Great Ormond Street Hospital for Children, London, UK
| | - Evangeline Wassmer
- Department of Paediatric Neurology, Birmingham Children's Hospital, Birmingham, UK
| | - Ming Lim
- Children's Neurosciences, Evelina London Children's Hospital at Guy's and St Thomas' National Health Service Foundation Trust, London, Faculty of Life Sciences and Medicine, Kings College Hospital, London, UK
| | - Matthias Baumann
- Department of Paediatrics, Division of Paediatric Neurology, Medical University of Innsbruck, Austria
| | - Ronny Wickström
- Neuropaediatric Unit, Karolinska University Hospital, Sweden
| | - Thaís Armangue
- Neuroimmunology Program, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain; Paediatric Neuroimmunology Unit, Neurology Department, Sant Joan de Déu (SJD) Children's Hospital, University of Barcelona, Barcelona, Spain
| | - Kevin Rostasy
- Department of Paediatric Neurology, Children's Hospital Datteln, Witten/Herdecke University, Datteln, Germany
| | - Kumaran Deiva
- Department of Paediatric Neurology, Assistance Publique-Hôpitaux de Paris, University Hospitals Paris-Saclay, Bicêtre Hospital and Faculty of Medicine, Paris-Saclay University, Le Kremlin Bicêtre, France; French Reference Network of Rare Inflammatory Brain and Spinal Diseases, Le Kremlin Bicêtre, France and European Reference Network-RITA
| | - Rinze F Neuteboom
- Department of Neurology, Erasmus Medical Center, Rotterdam, the Netherlands
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Marchionatti A, Woodhall M, Waters PJ, Sato DK. Detection of MOG-IgG by cell-based assay: moving from discovery to clinical practice. Neurol Sci 2020; 42:73-80. [PMID: 33063216 DOI: 10.1007/s10072-020-04828-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 10/12/2020] [Indexed: 01/05/2023]
Abstract
Myelin oligodendrocyte glycoprotein (MOG) is a unique CNS-specific mammalian protein that is expressed on the surface of compact myelin and oligodendrocyte cell bodies. MOG is an accessible target for autoantibodies, associated with immune-mediated demyelination in the central nervous system. The identification of MOG reactive immunoglobulin G antibodies (MOG-IgG) helps to distinguish a subgroup of patients from multiple sclerosis and other CNS disorders, reducing the risk of clinical misdiagnosis. The development of the cell-based assays (CBA) improved the detection of clinically meaningful MOG-IgG binding to conformational MOG expressed in the cell membrane surface. In this review, we describe factors that impact on the results of CBA, such as MOG conformation, protein glycosylation, addition of fluorescent tags, serum dilution, secondary antibodies, and data interpretation.
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Affiliation(s)
- Amanda Marchionatti
- Neuroinflammation and Neuroimmunology Lab, Brain Institute of Rio Grande do Sul, Porto Alegre, Brazil.,School of Medicine, Graduate Program in Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Mark Woodhall
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Patrick Joseph Waters
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Douglas Kazutoshi Sato
- Neuroinflammation and Neuroimmunology Lab, Brain Institute of Rio Grande do Sul, Porto Alegre, Brazil. .,School of Medicine, Graduate Program in Pediatrics and Child Health, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.
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50
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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] [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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