Key genes implicated in CAH include CYP21A2 (OMIM 613815), CYP11B1 (OMIM 610613), CYP17A1 (OMIM 609300), HSD3B2 (OMIM 613890), STAR (OMIM 600617), CYP11A1 (OMIM 118485), and POR (OMIM 124015). The gene discussed is CYP21A2; the disease is congenital adrenal hyperplasia.