RETN and polycystic ovary syndrome: Our results are in agreement with those of Escobar-Morreale et al, Xita et al and Urbanek et al, however while Escobar-Morreale et al showed no association between resistin -420 C>G polymorphism with PCOS, they found an association between ADIPOQ 45 T>G polymorphism and PCOS (18, 25, 26).