title: MTHFR 677TT genotype and toxicity of methotrexate: controversial results.
authors.forename: Elixabet
authors.initials: E
authors.lastname: Lopez-Lopez
authors.forename: Javier
authors.initials: J
authors.lastname: Ballesteros
authors.forename: Africa
authors.initials: A
authors.lastname: Garcia-Orad
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000633:toxicity*; D042965:Methylenetetrahydrofolate Reductase (NADPH2) / Q000235:genetics*; D010597:Pharmacogenetics; D011110:Polymorphism, Genetic; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000188:drug therapy*
chemical_list: D042965:Methylenetetrahydrofolate Reductase (NADPH2); D008727:Methotrexate