The results of a study by Fatima et al. [24] showed that patients with PCOS were characterized by low levels of glutathione, vitamins C and E, and significantly increased activity of antioxidant enzymes, such as glutathione peroxidase, glutathione reductase, and glutathione transferase compared to women without PCOS. The gene discussed is HPGDS; the disease is polycystic ovary syndrome.