FTO and polycystic ovary syndrome: The pooled analyses showed that single nucleotide polymorphism (SNP) at rs9939609 of FTO gene was significantly associated with risk of PCOS under A vs. T (OR=1.26, 95%CI: 1.10–1.45), AT vs. TT (OR=1.21, 95%CI: 1.01–1.44), AA vs. TT (OR=1.82, 95%CI: 1.46–2.26), AA vs. AT+TT (OR=1.45, 95%CI: 1.02–2.06) and AA+AT vs. TT (OR=1.27, 95%CI: 1.06–1.50) genetic models.