CYP17A1 and polycystic ovary syndrome: The TT polymorphism of CYP17A1 (rs743572) was significantly associated with PCOS (adjusted OR=3.97, P=0.03), while the CT variant showed a non-significant trend, after adjusting for age and BMI.<h4>Conclusion</h4>The current study, by providing further evidence for the association between CYP17A1 genetic polymorphisms and PCOS in multi-ethnic populations, has important implications for the management of this complex disorder, indicating the potential use of genotyping in assessing the genetic risk of the disorder in different ethnic groups.