Seizure Evolution and Outcome in Pediatric Autoimmune Encephalitis
- Authors
- Woo, Hyewon; Shim, Youngkyu; Chae, Jong-Hee; Kim, Ki Joong; Lim, Byung Chan
- Issue Date
- Feb-2023
- Publisher
- Elsevier BV
- Keywords
- Anti-MOG antibody; Anti-NMDAR antibody; Antibody-negative; Pediatric; Autoimmune encephalitis; Epilepsy; Postencephalitic seizure
- Citation
- Pediatric Neurology, v.139, pp 35 - 42
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- Pediatric Neurology
- Volume
- 139
- Start Page
- 35
- End Page
- 42
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2021.sw.kumedicine/62588
- DOI
- 10.1016/j.pediatrneurol.2022.11.008
- ISSN
- 0887-8994
1873-5150
- 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.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 2. Clinical Science > Department of Pediatrics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.