The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomes

Background Anti-NMDAR encephalitis frequently overlaps with demyelinating diseases (MOGAD, NMOSD, MS), creating complex syndromes with diverse presentations and challenging management.Methods Systematic search of databases including MEDLINE, Google Scholar, Embase, Scopus, Cochrane Library, and Web...

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Main Authors: Saboor Saeed, Huaizhi Wang, Mengjie Jia, Ting Ting Liu, Le Xu, Xuhong Zhang, Shao-Hua Hu
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Annals of Medicine
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Online Access:https://www.tandfonline.com/doi/10.1080/07853890.2025.2517813
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author Saboor Saeed
Huaizhi Wang
Mengjie Jia
Ting Ting Liu
Le Xu
Xuhong Zhang
Shao-Hua Hu
author_facet Saboor Saeed
Huaizhi Wang
Mengjie Jia
Ting Ting Liu
Le Xu
Xuhong Zhang
Shao-Hua Hu
author_sort Saboor Saeed
collection DOAJ
description Background Anti-NMDAR encephalitis frequently overlaps with demyelinating diseases (MOGAD, NMOSD, MS), creating complex syndromes with diverse presentations and challenging management.Methods Systematic search of databases including MEDLINE, Google Scholar, Embase, Scopus, Cochrane Library, and Web of Science up to March 2024 for studies on co-existing anti-NMDAR encephalitis and demyelinating syndromes. Data extracted on clinical characteristics, diagnostics, treatments, and outcomes.Results Twenty-five studies identified 256 patients (16.2%) with co-existing Anti-NMDAR encephalitis and demyelinating syndromes, primarily MOGAD (94.5%), with fewer cases involving NMOSD or MS. The Anti-NMDAR + MOGAD subgroup exhibited seizures (51–72.7%), psychiatric symptoms (45.5–71.4%), cognitive dysfunction (30.6%), and movement disorders (30.6%). All patients had CSF anti-NMDAR antibodies, with MOG (60%) or AQP4 (25%) antibodies. Use of standardized, cell-based assays and adherence to established criteria are essential to avoid false positives, particularly for MOG. MRI abnormalities were seen in 75% of patients. First-line immunotherapies were effective in 70% of cases; 80% of refractory cases responded to second-line therapies.Conclusions Anti-NMDAR encephalitis overlapping with demyelinating diseases is challenging. Tailored treatments based on detailed immune profiles are key to better outcomes.
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spelling doaj-art-85defa40148140e09ed501e98805f74e2025-08-20T02:43:13ZengTaylor & Francis GroupAnnals of Medicine0785-38901365-20602025-12-0157110.1080/07853890.2025.2517813The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomesSaboor Saeed0Huaizhi Wang1Mengjie Jia2Ting Ting Liu3Le Xu4Xuhong Zhang5Shao-Hua Hu6Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, ChinaNanhu Brain–Computer Interface Institute, Hangzhou, ChinaResearch Center of Clinical Pharmacy of The First Affiliated Hospital and Liangzhu Laboratory, Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of Critical Care Medicine, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, ChinaDepartment of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, ChinaBackground Anti-NMDAR encephalitis frequently overlaps with demyelinating diseases (MOGAD, NMOSD, MS), creating complex syndromes with diverse presentations and challenging management.Methods Systematic search of databases including MEDLINE, Google Scholar, Embase, Scopus, Cochrane Library, and Web of Science up to March 2024 for studies on co-existing anti-NMDAR encephalitis and demyelinating syndromes. Data extracted on clinical characteristics, diagnostics, treatments, and outcomes.Results Twenty-five studies identified 256 patients (16.2%) with co-existing Anti-NMDAR encephalitis and demyelinating syndromes, primarily MOGAD (94.5%), with fewer cases involving NMOSD or MS. The Anti-NMDAR + MOGAD subgroup exhibited seizures (51–72.7%), psychiatric symptoms (45.5–71.4%), cognitive dysfunction (30.6%), and movement disorders (30.6%). All patients had CSF anti-NMDAR antibodies, with MOG (60%) or AQP4 (25%) antibodies. Use of standardized, cell-based assays and adherence to established criteria are essential to avoid false positives, particularly for MOG. MRI abnormalities were seen in 75% of patients. First-line immunotherapies were effective in 70% of cases; 80% of refractory cases responded to second-line therapies.Conclusions Anti-NMDAR encephalitis overlapping with demyelinating diseases is challenging. Tailored treatments based on detailed immune profiles are key to better outcomes.https://www.tandfonline.com/doi/10.1080/07853890.2025.2517813Anti-NMDAR encephalitismultiple sclerosismyelin oligodendrocyte glycoprotein antibody-associated diseaseneuromyelitis optica spectrum disorderoverlapping syndrome
spellingShingle Saboor Saeed
Huaizhi Wang
Mengjie Jia
Ting Ting Liu
Le Xu
Xuhong Zhang
Shao-Hua Hu
The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomes
Annals of Medicine
Anti-NMDAR encephalitis
multiple sclerosis
myelin oligodendrocyte glycoprotein antibody-associated disease
neuromyelitis optica spectrum disorder
overlapping syndrome
title The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomes
title_full The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomes
title_fullStr The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomes
title_full_unstemmed The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomes
title_short The spectrum of overlapping anti-NMDAR encephalitis and demyelinating syndromes: a systematic review of presentation, diagnosis, management, and outcomes
title_sort spectrum of overlapping anti nmdar encephalitis and demyelinating syndromes a systematic review of presentation diagnosis management and outcomes
topic Anti-NMDAR encephalitis
multiple sclerosis
myelin oligodendrocyte glycoprotein antibody-associated disease
neuromyelitis optica spectrum disorder
overlapping syndrome
url https://www.tandfonline.com/doi/10.1080/07853890.2025.2517813
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