Focal to bilateral tonic–clonic seizures predict pharmacoresistance in focal cortical dysplasia–related epilepsy

皮质发育不良 癫痫 医学 癫痫外科 四分位间距 磁共振成像 颞叶 儿科 癫痫综合征 癫痫痉挛 外科 放射科 精神科
作者
Phat Chang,Hua Xie,Venkata Sita Priyanka Illapani,Xiaozhen You,Tayyba Anwar,Archana Pasupuleti,Thuy‐Anh Vu,L. Gilbert Vezina,Taha Gholipour,Chima Oluigbo,Anqing Zhang,William D. Gaillard,Nathan T. Cohen
出处
期刊:Epilepsia [Wiley]
卷期号:64 (9): 2434-2442 被引量:2
标识
DOI:10.1111/epi.17700
摘要

Abstract Objective Focal cortical dysplasia (FCD) is the most common etiology of surgically‐remediable epilepsy in children. Eighty‐seven percent of patients with FCD develop epilepsy (75% is pharmacoresistant epilepsy [PRE]). Focal to bilateral tonic–clonic (FTBTC) seizures are associated with worse surgical outcomes. We hypothesized that children with FCD‐related epilepsy with FTBTC seizures are more likely to develop PRE due to lesion interaction with restricted cortical neural networks. Methods Patients were selected retrospectively from radiology and surgical databases from Children's National Hospital. Inclusion criteria: 3T magnetic resonance imaging (MRI)–confirmed FCD from January 2011 to January 2020; ages 0 days to 22 years at MRI; and 18 months of documented follow‐up. FCD dominant network (Yeo 7‐network parcellation) was determined. Association of FTBTC seizures with epilepsy severity, surgical outcome, and dominant network was tested. Binomial regression was used to evaluate predictors (FTBTC seizures, age at seizure onset, pathology, hemisphere, lobe) of pharmacoresistance and Engel outcome. Regression was used to evaluate predictors (age at seizure onset, pathology, lobe, percentage default mode network [DMN] overlap) of FTBTC seizures. Results One hundred seventeen patients had a median age at seizure onset of 3.00 years (interquartile range [IQR] .42–5.59 years). Eighty‐three patients had PRE (71%); 34 had pharmacosensitive epilepsy (PSE) (29%). Twenty patients (17%) had FTBTC seizures. Seventy‐three patients underwent epilepsy surgery. Multivariate regression showed that FTBTC seizures are associated with an increased risk of PRE (odds ratio [OR] 6.41, 95% confidence interval [CI] 1.21–33.98, p = .02). FCD hemisphere/lobe was not associated with PRE. Percentage DMN overlap predicts FTBTC seizures. Seventy‐two percent ( n = 52) overall and 53% ( n = 9) of patients with FTBTC seizures achieved Engel class I outcome. Significance In a heterogeneous population of surgical and non‐operated patients with FCD‐related epilepsy, the presence of FTBTC seizures is associated with a tremendous risk of PRE. This finding is a recognizable marker to help neurologists identify those children with FCD‐related epilepsy at high risk of PRE and can flag patients for earlier consideration of potentially curative surgery. The FCD‐dominant network also contributes to FTBTC seizure clinical expression.
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