Association of CYP4A22 gene polymorphisms with cerebral stroke risk in the Chinese Han population

Cerebral stroke (stroke) is an acute cerebrovascular disease with high incidence and mortality. This study aimed to explore the association between single nucleotide polymorphisms (SNPs) of CYP4A22 and stroke risk in the Chinese Han population.

A total of 550 stroke patients and 545 healthy people were recruited. Four candidate SNPs (rs76011927 T/C, rs12564525 C/T, rs2056900 A/G and rs4926581 T/G) of CYP4A22 were screened. The association between CYP4A22 SNPs and stroke risk was assessed using genetic models and the relationship between SNPs and clinical biochemical indicators was analyzed by one-way analysis of variance (one-way ANOVA).

The overall analysis showed that rs12564525 could significantly reduce stroke risk only under the recessive model (OR = 0.72, 95% CI 0.53-0.99), but rs2056900 and rs4926581 were significantly associated with increased stroke risk under the homozygote (OR = 1.49, 95% CI 1.06-2.09; OR = 1.49, 95% CI 1.06-2.10), heterozygote (OR = 1.49, 95% CI 1.11-2.00; OR = 1.48, 95% CI 1.11-1.99), additive (OR = 1.22, 95% CI 1.03-1.45; OR = 1.22, 95% CI 1.03-1.45) and dominant (OR = 1.49, 95% CI 1.13-1.97; OR = 1.49, 95% CI 1.13-1.96) models (all p < 0.05). Subgroup analyses further indicated that rs2056900 and rs4926581 could significantly increase stroke risk in participants aged >63 years and females. In addition, high-density lipoprotein cholesterol (HDL-C) levels differed considerably among different genotypes of rs12564525, rs2056900 and rs4926581.

This study revealed that CYP4A22 SNPs are associated with stroke risk in the Chinese Han population, and in particular, rs2056900 and rs4126581 have a significant correlation with increased stroke risk.