To date, genome-wide association studies have been conducted in Chinese, Korean, and European cohorts and have pointed out the following genetic loci in genes associated with PCOS, e.g., DENND1A, insulin receptor (INSR), YAP1, C9orf3, RAB5B, HMGA2, TOX3, SUMO1P1/ZNF217, THADA, FSHR, and LHCGR [26,27]. The gene discussed is TOX3; the disease is polycystic ovary syndrome.