However, in the FTO gene rs9939609 polymorphism, a higher frequency of A allele (mutant allele) was observed in the PCOS group, while the frequency of T allele (normal allele) was significantly higher in the control group (Cases—AA = 40%, AT = 23.6%, TT = 36.4%; Controls—AA = 13.6%, AT = 20.9%, TT = 65.4%; p<0.05). The gene discussed is FTO; the disease is polycystic ovary syndrome.