CXCR2 and polycystic ovary syndrome: A non-significant association was reported between the CXCR2-(CA+CC) vs. CXCR2 AA genotypes and PCOS susceptibility, with an OR = 2.32 (95% CI: 0.908 to 5.944), RR = 1.63 (95% CI: 0.874 to 3.058), and p < 0.078 in the recessive model.