SOD1 and Infertility: Superoxide dismutase (SOD), glutathione (GSH), and catalase(CAT) are well-known enzymatic antioxidants in the seminal plasma and sperm,encoded by NRF2 (4), SOD, CAT,glutathione S-transferase (GST), and glutathione peroxidase (GPX) genes.Alteration in these genes may lead tomale infertility, and it seems that the improved activity ofthese genes may improve male fertility (5).