JOURNAL ARTICLE

Relationship between cytochrome P450 2C19*2 polymorphism and stent thrombosis following percutaneous coronary intervention in Chinese patients receiving clopidogrel

Y Luo, Y-T Zhao, A Verdo, W-G Qi, D-F Zhang, B Hu
Journal of International Medical Research 2011, 39 (5): 2012-9
22118006
This study investigated the relationship between the cytochrome P450 2C19 (CYP2C19) *2 polymorphism (681A) and definite stent thrombosis (ST) in patients undergoing percutaneous coronary intervention (PCI) and receiving clopidogrel (75 mg/day, orally). The CYP2C19*2 polymorphism status of 1738 Chinese patients with coronary artery disease was examined. The primary endpoint was the occurrence of definite ST during the 180-day follow-up period. The presence of at least one CYP2C19*2 allele was significantly associated with increased ST risk (19 CYP2C19*2/*2 or *1/*2 patients [2.4%] versus seven homozygous wild-type CYP2C19*1/*1 patients [0.75%]). The risk of definite ST was highest in patients with the CYP2C19*2/*2 genotype. The CYP2C19*2 genotype is associated with an increased risk of definite ST following coronary stent placement among Chinese patients with coronary artery disease receiving clopidogrel.

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