The multivariable analysis of the effect of the VEGF rs699947 genotypes on collateral formation in the patients with CAD adjusted for sex, age, the number of diseased vessels, cigarette smoking, and diabetes mellitus is shown in Table 3 (OR: 1.71, 95%CI: 0.87–3.39, P=0.122). This evidence concerns the gene VEGFA and diabetes mellitus.