NCIt definition : Human DHFR wild-type allele is located within 5q11.2-q13.2 and is approximately 29
kb in length. This allele, which encodes dihydrofolate reductase protein, plays a
role in the de novo synthesis of glycine, purines and thymidylic acid. It is also
involved in the regulation of endothelial nitric oxide levels. Allelic variants of
the DHFR gene are associated with malaria and megaloblastic amemia.;
NCIt note : Dihydrofolate reductase is a drug target. Specific mutations in the DHFR gene confer
cellular resistance to the chemotherapeutic agent methotrexate.;