Our results suggest that the frequency of the A allele in rs3761548 in patients with EC was significantly lower than that in healthy controls (20.3% vs 26.4%, odds ratio [OR] 0.71, 95% confidence interval [CI]: 0.54-0.93, P = .012), while the heterozygous AC genotype showed a significant protective effect on EC in codominant, dominant, and overdominant models (adjusted OR 0.64, 95% CI: 0.45-0.91, P = .039; OR 0.65, 95% CI: 0.47-0.91, P = .011; OR 0.67, 95% CI: 0.47-0.94, P = .02, respectively), and AA genotype was more frequent in patients with cervical invasion (recessive model: OR 3.55, 95% CI: 1.10-11.44, P = .046).