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

观察研究 医学 脑炎 自身免疫性脑炎 期限(时间) 内科学 儿科 癫痫 免疫学 精神科 量子力学 病毒 物理
作者
Xu Liu,Kundian Guo,Jingfang Lin,Xue Gong,Aiqing Li,Dong Zhou,Zhen Hong
出处
期刊:Epilepsia [Wiley]
卷期号:63 (7): 1812-1821 被引量:36
标识
DOI:10.1111/epi.17245
摘要

Abstract 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‐γ‐aminobutyric 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. Significance Seizure recurrence occurred in a small number of patients and chronic epilepsy occurred in 3.1% of patients during prolonged follow‐up. Across all types of AE, risk factors for seizure recurrence were IEDs or seizures captured on EEG in the acute phase; for anti‐NMDAR encephalitis, female sex was also a risk factor.
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