Abstract
Aim: Pharmacoresistance is a major burden in epilepsy treatment. We aimed to identify genetic biomarkers inresponse to specific antiepileptic drugs (AEDs) in genetic generalized epilepsies (GGE). Materials& methods: We conducted a genome-wide association study (GWAS) of 3.3million autosomal SNPs in 893 European subjects with GGE - responsive or nonresponsive to lamotrigine, levetiracetam and valproic acid. Results: Our GWAS of AED response revealed suggestive evidence for association at 29 genomic loci (p <10-5) but no significant association reflecting its limited power. The suggestive associations highlight candidate genes that are implicated in epileptogenesis and neurodevelopment. Conclusion: This first GWAS of AED response in GGE provides a comprehensive reference of SNP associations for hypothesis-driven candidate gene analyses in upcoming pharmacogenetic studies.
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