title: The methylenetetrahydrofolate reductase C677T gene polymorphism decreases the risk of childhood acute lymphocytic leukaemia.
abstract: We have determined the prevalence of methylenetetrahydrofolate reductase (MTHFR) mutations C677T and A1298C in 71 children (< or = 15 years) with acute lymphoblastic leukaemia (ALL) and in 71 control subjects. Odds ratio (OR) for ALL linked to MTHFR C677T was 0.4 (95% CI 0.2-0.8); for heterozygotes it was 0.5 (95% CI 0.2-0.9) and for homozygotes it was 0.3 (95%CI 0.09-0.8). MTHFR A1298C yielded an overall OR for ALL of 1.3 (95% CI: 0.7-2.6); for heterozygotes it was 1.3 (95% CI: 0.7-7.6) and for homozygotes it was 2.8 (95% CI 0.5-15.6). In conclusion, MTHFR C677T was linked to a significant 2.4-fold decreased risk of developing childhood ALL, whereas MTHFR A1298C did not significantly affect the risk of ALL in our population.
authors.affiliation: Department of Clinical Medicine and Centre for Cell-Based Therapy, School of Medicine of Ribeirão Preto, Ribeirão Preto, Brazil. rendri@hotmail.com
authors.forename: R F
authors.initials: RF
authors.lastname: Franco
authors.forename: B P
authors.initials: BP
authors.lastname: Simões
authors.forename: L G
authors.initials: LG
authors.lastname: Tone
authors.forename: S M
authors.initials: SM
authors.lastname: Gabellini
authors.forename: M A
authors.initials: MA
authors.lastname: Zago
authors.forename: R P
authors.initials: RP
authors.lastname: Falcão
mesh_terms: D000293:Adolescent; D002051:Burkitt Lymphoma / Q000235:genetics; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D016001:Confidence Intervals; D005260:Female; D018095:Germ-Line Mutation; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D007223:Infant; D015459:Leukemia-Lymphoma, Adult T-Cell / Q000235:genetics; D008297:Male; D042965:Methylenetetrahydrofolate Reductase (NADPH2); D016017:Odds Ratio; D000587:Oxidoreductases Acting on CH-NH Group Donors / Q000235:genetics*; D011110:Polymorphism, Genetic; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000235:genetics*; D015995:Prevalence; D012306:Risk
chemical_list: D000587:Oxidoreductases Acting on CH-NH Group Donors; D042965:Methylenetetrahydrofolate Reductase (NADPH2)