Update on the diagnosis and treatment of neuromyelits optica spectrum disorders (NMOSD) - revised recommendations of the Neuromyelitis Optica Study Group (NEMOS). Part I: Diagnosis and differential diagnosis
- PMID: 37022481
- PMCID: PMC10267280
- DOI: 10.1007/s00415-023-11634-0
Update on the diagnosis and treatment of neuromyelits optica spectrum disorders (NMOSD) - revised recommendations of the Neuromyelitis Optica Study Group (NEMOS). Part I: Diagnosis and differential diagnosis
Abstract
The term 'neuromyelitis optica spectrum disorders' (NMOSD) is used as an umbrella term that refers to aquaporin-4 immunoglobulin G (AQP4-IgG)-positive neuromyelitis optica (NMO) and its formes frustes and to a number of closely related clinical syndromes without AQP4-IgG. NMOSD were originally considered subvariants of multiple sclerosis (MS) but are now widely recognized as disorders in their own right that are distinct from MS with regard to immunopathogenesis, clinical presentation, optimum treatment, and prognosis. In part 1 of this two-part article series, which ties in with our 2014 recommendations, the neuromyelitis optica study group (NEMOS) gives updated recommendations on the diagnosis and differential diagnosis of NMOSD. A key focus is on differentiating NMOSD from MS and from myelin oligodendrocyte glycoprotein antibody-associated encephalomyelitis (MOG-EM; also termed MOG antibody-associated disease, MOGAD), which shares significant similarity with NMOSD with regard to clinical and, partly, radiological presentation, but is a pathogenetically distinct disease. In part 2, we provide updated recommendations on the treatment of NMOSD, covering all newly approved drugs as well as established treatment options.
Keywords: Aquaporin-4 (AQP4); Autoantibodies; Cerebrospinal fluid (CSF); Clinical presentation; Diagnosis; Diagnostic criteria; Differential diagnosis; MOG antibody-associated disease (MOGAD); MOG antibody-associated encephalomyelitis (MOG-EM); Magnetic resonance imaging (MRI); Myelin oligodendrocyte glycoprotein (MOG); Myelitis; Neuromyelitis optica (NMO); Neuromyelitis optica spectrum disorders (NMOSD); Optic coherence tomography (OCT); Optic neuritis; Serology.
© 2023. The Author(s).
Conflict of interest statement
SJ reports no conflicts of interest. OA has received speaking honoraria and travel grants from Alexion, Almirall, Biogen, Celgene, Merck, Novartis, Roche, and VielaBio. IA has received speaking honoraria and scientific advisory board compensation from Alexion, Roche, Merck Serono, Santhera, and Sanofi Genzyme and research support from Chugai and Diamed. JBS has received speaking honoraria and travel grants from Bayer Healthcare, sanofi-aventis/Genzyme, and Biogen and compensation for serving on a scientific advisory board from Roche. AB has received consulting and/or speaking fees from Alexion, Bayer Healthcare, Biogen, Celgene, and Roche. His institution has received compensations for clinical trials from Alexion, Biogen, Merck, Novartis, Roche, and Sanofi. VH reports no conflicts of interest. JH reports a grant for OCT research from the Friedrich-Baur-Stiftung, personal fees and non-financial support from Merck, Alexion, Novartis, Roche, Santhera, Biogen, Heidelberg Engineering, and Sanofi Genzyme, and non-financial support from the Guthy-Jackson Charitable Foundation; he is partially funded by the German Federal Ministry of Education and Research [grant numbers 01ZZ1603[A-D] and 01ZZ1804[A-H] (DIFUTURE)]. KH reports no conflicts of interest. MH reports no conflicts of interest. IK has received personal compensation for consulting, serving on a scientific advisory board, speaking, or other activities from Alexion, Almirall, Bayer, Biogen, Hexal, Horizon, Merck, Neuraxpharm, Sanofi, and Roche/Chugai. LK has received compensation for serving on scientific advisory boards from Alexion, Biogen, BMS, Celgene GmbH, Genzyme, Horizon, Janssen, Merck Serono, Novartis, and Roche. She has received speaker honoraria and travel support from Bayer, Biogen, Celgene GmbH, Genzyme, Grifols, Merck Serono, Novartis, Roche, Santhera, and Teva; she receives research support from German Research Foundation, IZKF Münster, IMF Münster, Biogen, Immunic AG, Novartis, and Merck Serono. MK has received travel funding, speaker honoraria, and research support from Bristol Myers Squibb, Merck, Novartis, and Roche. TK has received speaker honoraria and/or personal fees for advisory boards from Novartis Pharma, Roche Pharma, Alexion/Astra Zeneca and Biogen; the Institution she works for has received grant support for her research from Bayer-Schering AG, Novartis and Chugai Pharma. FP has received grants from Guthy Jackson Charitable Foundation, German Research Foundation, German Federal Ministry of Education and Research, Novartis, Bayer, Biogen Idec, Teva, Alexion, Roche, Horizon, Sanofi-Aventis/Genzyme, Merck Serono, Chugai, German Research Council, Werth Stiftung of the City of Cologne, Arthur Arnstein Stiftung Berlin, EU FP7 Framework Program, National Multiple Sclerosis (USA), MedImmune, Shire, and Alexion, and has a patent on Foveal Morphometry pending to Nocturne GmbH; he is Academic Editor at
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