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Effects of UGT1A, CYP2C9/19 and ABAT polymorphisms on plasma concentration of valproic acid in Chinese epilepsy patients

    Xiao-Xiao Zheng

    Department of Clinical Pharmacy, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, 269 University Road, Xuzhou City, Jiangsu Province, P.R. China

    ,
    Yu-Xin You

    Jiangsu Key Laboratory of New Drug Research & Clinical Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China

    ,
    Lin-Lin Zhao

    Jiangsu Key Laboratory of New Drug Research & Clinical Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China

    ,
    Yan Du

    Jiangsu Key Laboratory of New Drug Research & Clinical Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China

    Department of Pharmaceutical Analysis, Xuzhou Medical University, Xuzhou, 221004, China

    ,
    Sheng-Qiu Xu

    *Author for correspondence: Tel.: +86 516 85803139;

    E-mail Address: yjk3139@163.com

    Department of Clinical Pharmacy, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, 269 University Road, Xuzhou City, Jiangsu Province, P.R. China

    &
    Dao-Quan Tang

    Jiangsu Key Laboratory of New Drug Research & Clinical Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China

    Department of Pharmaceutical Analysis, Xuzhou Medical University, Xuzhou, 221004, China

    Published Online:https://doi.org/10.2217/pgs-2022-0156

    Aim: To evaluate the association between genetic polymorphisms and plasma concentration-to-dose ratio of valproic acid (CDRV) in Chinese epileptic patients. Methods: A total of 46 epileptic patients treated with valproic acid therapy were enrolled. 18 SNPs in nine genes related to valproic acid were directly sequenced with Sanger methods. Results: Patients carrying UGT1A6 heterozygous genotypes had significantly lower CDRV than those carrying the wild-type genotypes. In contrast, patients with the homozygote genotypes of CYP2C9 and ABAT had higher CDRV than those with the wild-type genotypes and patients with the heterozygous genotypes of CYP2C19 had higher CDRV. Conclusion: Detection of genetic polymorphism in these genes might facilitate an appropriate dose of valproic acid for epileptic patients. Further studies with larger cohorts are necessary to underpin these observations.

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