Transferases are a widely distributed class of enzymes responsible for catalyzing the transfer of a functional group from one molecule to another. The transferase family includes several subtypes such as kinases, methyltransferases, glycosyltransferases, and fatty acid transferases. These enzymes are localized in the cytoplasm, cell membrane, and organelles, and are extensively involved in various biological reactions and signaling pathways, such as metabolic regulation, DNA repair, signal transduction, and cell differentiation. The specific expression and mutations of transferase genes are associated with various diseases, including cancer, inherited metabolic disorders, and cardiovascular diseases.