A total of 265 unrelated CAD patients and 265 age- and sex-matched control subjects were recruited in this study. The GPX1 198Pro/leu genotype was determined using polymerase chain reaction–restriction fragment length polymorphism.
Compared to the 198Pro/Pro carriers, subjects with the variant genotypes (198Pro/leu and 198Leu/leu) had a significantly higher risk of CAD (adjusted OR = 2.02, 95 % CI = 1.27–3.22). In stratified analyses, the variant genotypes were significantly associated with increased CAD risk in subjects < 64 y (adjusted OR = 2.41, 95 % CI = 1.16–4.98), males (adjusted OR = 1.86, 95 % CI = 1.09–3.18) and non-smokers (adjusted OR = 2.40, 95 % CI = 1.15–5.01). However, no significant association was observed between this variant and the severity of CAD.
These data provide evidence that GPX1 198Pro/leu variant genotypes are significantly associated with CAD risk in this Chinese population.