PDCD1 and breast cancer: The carriers with PD-1.1 A-allele was slightly related to increased risk.of BC (GA vs. GG: OR = 1.42, 95% CI = 1.04-1.93, P = 0.026; AA+GA vs. GG: OR = 1.41, 95% CI = 1.06-1.89, P = 0.020) and OC (AA vs. GA+GG: OR = 1.50, 95% CI = 1.18-1.91 P = 0.185).