Association of the Purinergic Receptor P2Y, G-Protein Coupled, 2 (P2RY2) Gene With Myocardial Infarction in Japanese Men

Background: Atherosclerosis leads to myocardial infarction (MI) and P2RY2 plays an important role in this process. The aim of the present study was to investigate the association between human P2RY2 and MI via a haplotype-based case-control study that additionally analyzed the group by sex. Methods and Results: The 310 MI patients and 254 controls were genotyped for 5 single-nucleotide polymorphisms (SNPs) of the human P2RY2 gene (rs4944831, rs1783596, rs4944832, rs4382936, rs10898909). Data were separately analyzed for the total, male, and female subjects. For men, the GA+AA genotype of rs10898909 was significantly higher in MI patients as compared with controls (P=0.040). Logistic regression analysis found a significant difference for the genotype (P=0.016). As compared with controls, the frequencies of the C-A and T-C-A haplotypes were significantly higher (P=0.016, and P=0.045, respectively) in men, whereas the frequencies of the C-G and T-A-A haplotypes were significantly lower (P=0.023. and P=0.025, respectively) in MI patients. Conclusions: The GA+AA genotype, as well as the C-A and T-C-A haplotypes, of human P2RY2 could be genetic markers for MI in Japanese men. (Circ J 2009; 73: 2322-2329)