Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2002-5-2
pubmed:abstractText
We previously reported that 2 polymorphisms in the 5,10-methylenetetrahydrofolate reductase (MTHFR) gene at positions C677T and A1298C were associated with lower risk of adult acute lymphocytic leukemia (ALL). In the present study, we have examined whether polymorphisms in other folate-metabolizing genes play a role in ALL susceptibility. Polymorphisms in methionine synthase (MS A2756G), cytosolic serine hydroxymethyltransferase (SHMT1 C1420T), and a double (2R2R) or triple (3R3R) 28-bp tandem repeat in the promoter region of thymidylate synthase (TS) were studied and found to modulate ALL risk. In a univariate analysis, SHMT1 1420CT individuals exhibited a 2.1-fold decrease in ALL risk (odds ratio [OR] = 0.48; 95% confidence interval [CI], 0.25-0.91), whereas the 1420TT genotype conferred a 3.3-fold reduction in risk (OR = 0.31; 95% CI, 0.10-0.90). Similarly, TS 2R3R individuals exhibited a 2.8-fold reduction in ALL risk (OR = 0.36; 95% CI: 0.16-0.83), while the TS 3R3R genotype conferred an even greater level of protection (OR = 0.25; 95% CI, 0.08-0.78). However, no significant associations were evident for the MS 2756AG polymorphism (OR = 0.79; 95% CI, 0.38-1.7). In addition, potential interactions between the SHMT1 and TS or MS genes were observed. TS 3R3R individuals who were SHMT1 1420CT/TT had a 13.9-fold decreased ALL risk (OR = 0.072; 95% CI, 0.0067-0.77). Further, MS 2756AG individuals who were SHMT1 1420CT/TT had a 5.6-fold reduction in ALL risk (OR = 0.18; 95% CI, 0.05-0.63). This study suggests an important role for uracil misincorporation and resultant chromosomal damage in the pathogenesis of ALL, and that genetic interactions involving low penetrance polymorphisms in folate-metabolizing genes may increase ALL risk.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0006-4971
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
99
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3786-91
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed-meshheading:11986237-5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase, pubmed-meshheading:11986237-Adolescent, pubmed-meshheading:11986237-Adult, pubmed-meshheading:11986237-Aged, pubmed-meshheading:11986237-Case-Control Studies, pubmed-meshheading:11986237-Female, pubmed-meshheading:11986237-Folic Acid, pubmed-meshheading:11986237-Genetic Predisposition to Disease, pubmed-meshheading:11986237-Genotype, pubmed-meshheading:11986237-Glycine Hydroxymethyltransferase, pubmed-meshheading:11986237-Humans, pubmed-meshheading:11986237-Male, pubmed-meshheading:11986237-Middle Aged, pubmed-meshheading:11986237-Models, Chemical, pubmed-meshheading:11986237-Multivariate Analysis, pubmed-meshheading:11986237-Odds Ratio, pubmed-meshheading:11986237-Polymorphism, Genetic, pubmed-meshheading:11986237-Precursor Cell Lymphoblastic Leukemia-Lymphoma, pubmed-meshheading:11986237-Thymidylate Synthase
pubmed:year
2002
pubmed:articleTitle
Polymorphisms in the thymidylate synthase and serine hydroxymethyltransferase genes and risk of adult acute lymphocytic leukemia.
pubmed:affiliation
NFCR Center for Genomics and Nutrition, School of Public Health, and the Department of Nutritional Sciences, University of California, Berkeley, CA 94720-7360, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't