In order to standardize the diagnosis of PCOS, various guidelines and statements have been published in recent years, resulting in the combination of the fundamental characteristics of the syndrome, that is hyperandrogenemia (increase in testosterone and/or DHEAS concentration), hyperandrogenism (hirsutism, acne, or alopecia), menstrual dysfunction, and polycystic ovarian morphology identified by ultrasound. Here, SULT2A1 is linked to polycystic ovary syndrome.