Table 4 illustrates the association between the BIRC5 SNP of rs2071214 and the capacity of collateral circulation. As found by multivariate logistic regression analysis after adjustment for age, sex, hypertension, HDL-C, and vascular stenosis degree, the GG genotype of rs2071214 significantly increased the risk of the poor group (additive model: GG vs. AA, OR = 3.592, 95% CI = 1.410–9.150, and P=0.007; recessive model: GG vs. AA/GA, OR = 3.313, 95% CI = 1.420–7.727, and P=0.006) (Table 4). The gene discussed is BIRC5; the disease is hypertensive disorder.