Clinical features, treatments, and outcomes of patients with anti-N-methyl-D-aspartate encephalitis—a single-center, retrospective analysis in China

Objective: This study was undertaken to update and evaluate long-term seizure outcomes in patients with autoimmune encephalitis (AE) based on a large cohort study with long follow-up. Methods: In this prospective observational registry study, we analyzed data from patients with AE mediated by common types of neuronal surface antibodies (anti-N-methyl-d-aspartate receptor [NMDAR], anti-leucine-rich glioma-inactivated 1 [LGI1]/contactin-associated protein-like 2 [Caspr2], anti-γaminobutyric acid type B receptor [GABA B R]). All patients were recruited from the Department of Neurology at West China Hospital between October 2011 and June 2019, and data were collected prospectively on their demographic and clinical characteristics, treatment strategy, and seizure outcomes, with a median follow-up of 42 months (range = 6-93 months). Potential risk factors associated with seizure recurrence were also assessed.Results: Of 320 AE patients, 75.9% had acute seizures, among whom >90% of patients had their last seizure within 12 months of disease onset. During our follow-up, 21 (9.3%) patients experienced seizure recurrence. Patients with anti-GABA B R encephalitis had a higher cumulative incidence of seizure recurrence than those with anti-NMDAR (log-rank p = .03) or anti-LGI1/Caspr2 encephalitis (log-rank p = .04). Among patients with anti-NMDAR encephalitis, women had a significantly higher cumulative incidence of seizure recurrence than men (log-rank p = .01). Interictal epileptiform discharges (IEDs) or seizures captured on continuous electroencephalogram (EEG) in the acute phase were identified as potential risk factors for seizure recurrence (p = .04, p = .007). Among 163 patients with ≥24 months of follow-up, five (3.1%) showed persistent seizures and required ongoing antiseizure medications despite aggressive immunotherapy.

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Clinical features, treatments, and outcomes of patients with anti-N-methyl-D-aspartate encephalitis—a single-center, retrospective analysis in China

Cited by 2 publications

References 25 publications

Clinical features, cerebrospinal fluid changes, and prognosis in Chinese patients with autoimmune encephalitis

Clinical features, cerebrospinal fluid changes, and prognosis in Chinese patients with autoimmune encephalitis

Long‐term seizure outcomes in patients with autoimmune encephalitis: A prospective observational registry study update

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