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The Effect of RFC G80A Polymorphism in Cretan children with acute lymphoblastic leukemia and its interaction with MTHFR C677T and A1298C polymorphisms

The association between the risk of acute lymphoblastic leukemia (ALL) in children and enzymes involved in the folate metabolism has been under investigation lately. The reduced folate carrier gene (RFC) encodes reduced folate carrier, a protein that transports into the cell both folate and methotrexate, a commonly used chemotherapeutic drug, has been proved polymorphic at position 80 (G→A). The role of this polymorphism in childhood ALL and its interaction with other enzymes of the folate metabolic pathway, including MTHFR, has been examined in different populations with diverse results.