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Genetic variation in the folate metabolic pathway and risk of childhood leukemia

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JournalBlood
DatePublished - 13 May 2010
Issue number19
Volume115
Number of pages7
Pages (from-to)3923-3929
Original languageEnglish

Abstract

Studies of childhood leukemia and the potential etiologic role of genetic variation in folate metabolism have produced conflicting findings and have often been based on small numbers. We investigated the association between polymorphisms in key folate metabolism enzymes (MTHFR 677 C > T, MTHFR 1298 A > C, SHMT1 1420 C > T, MTR 2756 A > G, TS 1494del6, and TS 28bp repeat) in 939 cases of childhood acute lymphoblastic leukemia (ALL) and 89 cases of acute myeloid leukemia (AML) recruited into the United Kingdom Childhood Cancer Study. We also examined the maternal genotypes of 752 of these cases. Data from 824 noncancer controls recruited were used for comparison. No evidence of an association with MTHFR 677 was observed for ALL or AML, either in children or their mothers. However, in children an increased risk of ALL (odds ratio [OR] = 1.88; 95% confidence interval [CI], 1.16-3.07; P = .010) and AML (OR = 2.74; 95% CI, 1.07-7.01; P = .036) was observed with the MTR 2756 GG genotype; the association was most pronounced for cases with the MLL translocation (OR = 4.90; 95% CI, 1.30-18.45; P = .019). These data suggest that genetic variation in methionine synthase could mediate risk of childhood leukemia, either via effects on DNA methylation or via effects on fetal growth and development. Blood. 2010; 115(19): 3923-3929)

    Research areas

  • ACUTE LYMPHOBLASTIC-LEUKEMIA, METHYLENETETRAHYDROFOLATE REDUCTASE MTHFR, NON-HODGKIN-LYMPHOMA, ACUTE LYMPHOCYTIC-LEUKEMIA, NEURAL-TUBE DEFECTS, THYMIDYLATE-SYNTHASE, CHROMOSOME TRANSLOCATIONS, POLYMORPHISMS, SUSCEPTIBILITY, CANCER

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