[Association between CMTM5 gene rs723840 single nucleotide polymorphism and high on asprin platelet reactivity].

Objective: To elucidate the correlation between the single nucleotide polymorphism of CKLF-like MARVEL transmembrane member 5 (CMTM5) gene rs723840 and the occurrence of high on aspirin platelet reactivity (HAPR).

Methods: The present study is a case-control study. A total of 210 hospitalized patients in Peking University First Hospital were enrolled. Aspirin response was assessed by 0.5 g/L arachidonic acid (AA)-induced platelet aggregation ratio (PR), and ≥ 3/4 quartile of PR of the population was defined as HAPR. Accordingly all the enrolled 210 coronary artery diseases (CAD) patients were divided into HAPR group and No-HAPR group. The genotypes were determined by polymerase chain reaction (PCR) and sequencing analysis for rs723840 of CMTM5 gene.

Results: The genotype frequencies in rs723840 C>T of CMTM5 gene conformed well to the Hardy-Weinberg equilibrium in both HAPR group and No-HAPR group. Between the two groups, the genotypes frequencies in HAPR and No-HAPR groups were 48.4%, 51.6%, 0.0% and 73.7%, 22.9%, 0.034%, respectively (P=0.004). The C, T allele frequencies were significantly different in the two groups (P=0.031,OR=0.501, 95% CI: 0.264-0.947).

Conclusion: Our study finds a significant correlation between CMTM5 gene rs723840 polymorphism and high on aspirin platelet reactivity.