[Resistance to clopidogrel and polymorphism of P2RY12 and GPIIIA genes in patients with chronic coronary heart disease].

We studied the association between clopidogrel resistance, H1/NH2 polymorphism of the P2RY12 gene and T156C polymorphism of the GpIIIa gene in residents of Western Siberia suffering chronic CHD. It was shown that the occurrence of H1 and H2 haplotypes of the P2RY12 gene and 1565T and 1565C alleles of the GpIIIa gene was similar to that reported for European populations. Patients showing variable platelet response to the inhibitory action of clopidogrel were not significantly different in terms of P2RY12 and GpIIIa genotype distribution. To conclude, the study revealed no association between the risk of clopidogrel resistance and the presence of polymorphic variants of platelet receptor genes P2RY12 and GpIIIa.