Infertile women with polycystic ovary syndrome had significantly higher plasma levels of dehydroepiandrosterone sulfate (p=0.001), testosterone (p=0.005), insulin (p=0.041), Homeostasis Model Assessment of Insulin Resistance (p=0.029), prolactin (p=0.018), triglycerides (p<0.001), triglyceride/high-density lipoprotein (p=0.001), atherogenic index of plasma (p=0.011), triglyceride-glucose index (p=0.001), and lipoprotein combine index (p=0.007) compared to the fertile women with polycystic ovary syndrome. The gene discussed is PRL; the disease is polycystic ovary syndrome.