INSR and polycystic ovary syndrome: Based on these considerations, the aim of the present study was to investigate whether the FokI, BsmI, ApaI, TaqI, and Tru9I polymorphisms of the VDR gene, the DraII polymorphism of the PTH gene, and the PmlI and NsiI polymorphisms of the INSR gene were associated with PCOS risk.