Abstract
Background: The effect of multiple mutations in CYP2C19, PON1 and ABCB1 genes on the effectiveness and safety of dual antiplatelet therapy after percutaneous coronary interventionremains unclear. Methods: In total, 263 Chinese Han patients were enrolled in this study. Platelet aggregation rates and thrombosis risk were used to compare clopidogrel responses and outcomes in patients with different numbers of genetic mutations. Results: Our study demonstrated that 74% of the patients carried more than two genetic mutations. High platelet aggregation rates were associated with genetic mutations in patients receiving clopidogrel and aspirin after percutaneous coronary intervention. Genetic mutations were closely related to the recurrence of thrombotic events, but not bleeding. The number of genes that become dysfunctional in patients is directly correlated with the risk of recurrent thrombosis. Conclusion: Compared with CYP2C19 alone or the platelet aggregation rate, it is more helpful to predict clinical outcomes by considering the polymorphisms of all three genes.
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