Abstract
Different functional alleles for each subtype of cytochrome P450 (CYPs), thiopurine S-methyltransferase (TPMT), glutathione S-transferase (GST) and sulfotransferase (SULT) enzymes, have been identified. In this review, the genetic polymorphisms of drug-metabolizing enzymes in the Japanese population and their effects on metabolic activity are described in detail.
Keywords: CYP2C9, CYP2C19, CYP2D6, thiopurine S-methyltransferase, glutathione S-transferase and sulfotransferase 1A1