title: Implication of the folate-methionine metabolism pathways in susceptibility to follicular lymphomas.
abstract: The incidence of follicular lymphoma (FL) in industrialized countries has been increasing since the 1950s. Polymorphisms in genes encoding key enzymes controlling folate-methionine metabolism, including methylenetetrahydrofolate reductase (MTHFR), methionine synthase (MS or MTR), serine hydroxymethyltransferase (SHMT), and thymidylate synthase (TS or TYMS), modify the risk of various cancers and possibly FL. This study specifically looks for an association between MTHFR, MTR, TYMS, and SHMT polymorphisms and the risk of FL. We carried out a case-control study with 172 patients diagnosed with FL and 206 control subjects. We report that the risk of FL was doubled by the association of one mutant allele at both MTHFR polymorphisms. Individuals with MTR 2756AA had 2-fold higher risk of FL, and subjects not having at least one TYMS 2R allele showed a 2-fold higher risk of FL. The MTR 2756AA genotype conferred a greater multivariate-adjusted relative risk of FL, and the risk was multiplied by almost 5 in the TYMS2R(-)/MTR 2756AA combination. In conclusion, common polymorphisms in key enzymes of the folate-methionine metabolism pathway result in an increased risk of FL and suggest that inadequate intake of dietary folate and other methyl donor nutrients may contribute to the development of this malignancy.
authors.affiliation: Institut National de la Santé et de la Recherche Médicale (INSERM) UR383-E0210, the Service d'Hématologie Clinique adulte-U550, and the Département de biostatistiques, Hôpital Necker-Enfants Malades, Université René Descartes, Paris, France.
authors.forename: Sidonie
authors.initials: S
authors.lastname: Niclot
authors.forename: Quentin
authors.initials: Q
authors.lastname: Pruvot
authors.forename: Caroline
authors.initials: C
authors.lastname: Besson
authors.forename: Daniel
authors.initials: D
authors.lastname: Savoy
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Macintyre
authors.forename: Gilles
authors.initials: G
authors.lastname: Salles
authors.forename: Nicole
authors.initials: N
authors.lastname: Brousse
authors.forename: Bruno
authors.initials: B
authors.lastname: Varet
authors.forename: Paul
authors.initials: P
authors.lastname: Landais
authors.forename: Pierre
authors.initials: P
authors.lastname: Taupin
authors.forename: Claudine
authors.initials: C
authors.lastname: Junien
authors.forename: Dominique
authors.initials: D
authors.lastname: Baudry-Bluteau
mesh_terms: D013766:5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase / Q000235:genetics / Q000378:metabolism; D000328:Adult; D000483:Alleles; D004247:DNA / Q000235:genetics; D004798:Enzymes / Q000235:genetics*; D005260:Female; D005492:Folic Acid / Q000097:blood / Q000378:metabolism*; D020022:Genetic Predisposition to Disease; D005838:Genotype; D012696:Glycine Hydroxymethyltransferase / Q000235:genetics / Q000378:metabolism; D006801:Humans; D008224:Lymphoma, Follicular / Q000175:diagnosis / Q000201:enzymology* / Q000235:genetics*; D008297:Male; D008715:Methionine / Q000097:blood / Q000378:metabolism*; D042965:Methylenetetrahydrofolate Reductase (NADPH2) / Q000235:genetics / Q000378:metabolism; D008875:Middle Aged; D009154:Mutation; D011110:Polymorphism, Genetic / Q000235:genetics; D012307:Risk Factors; D013940:Thymidylate Synthase / Q000235:genetics / Q000378:metabolism
chemical_list: D004798:Enzymes; D004247:DNA; D005492:Folic Acid; D008715:Methionine; D042965:Methylenetetrahydrofolate Reductase (NADPH2); D013766:5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; D013940:Thymidylate Synthase; D012696:Glycine Hydroxymethyltransferase