title: MS-920: DNA repair gene polymorphisms, diet and colorectal cancer risk in Taiwan.
abstract: This hospital-based case-control study examined whether polymorphic DNA repair genes: XRCC1 Arg399Gln, XRCC3 Thr241Met and XPD Lys751Gln, play a role in the susceptibility to colorectal cancer. We genotyped these polymorphisms for 727 newly diagnosed colorectal adenocarcinoma cases and 736 age and sex matched healthy controls in Taiwan. Although the colorectal cancer risk was not significantly associated with these genes, the risk was significantly elevated in younger subjects (< or =60 years) with the XRCC1 399Arg/Arg genotype compared to those with XRCC1 399Gln allele (OR=1.46, 95% CI=1.06-2.99, P=0.02). The stratified analysis showed that XRCC3 interacted with meat consumption (P for interaction=0.02), but was limited to the low meat consumption (OR=2.34, 95% CI=1.28-4.29). Our results suggest that the XRCC1 Arg399Gln polymorphism may contribute to the risk of early-onset colorectal cancer and the XRCC3 Thr241Met polymorphism may modify the risk for meat-associated colorectal cancer.
authors.affiliation: Institute of Environmental Health and Department of Risk Management, College of Public Health, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan, ROC.
authors.forename: Chih-Ching
authors.initials: CC
authors.lastname: Yeh
authors.forename: Ling-Ling
authors.initials: LL
authors.lastname: Hsieh
authors.forename: Reiping
authors.initials: R
authors.lastname: Tang
authors.forename: Chung Rong
authors.initials: CR
authors.lastname: Chang-Chieh
authors.forename: Fung-Chang
authors.initials: FC
authors.lastname: Sung
mesh_terms: D017668:Age of Onset; D000368:Aged; D016022:Case-Control Studies; D015179:Colorectal Neoplasms / Q000209:etiology / Q000235:genetics*; D004265:DNA Helicases / Q000235:genetics*; D004260:DNA Repair; D004268:DNA-Binding Proteins / Q000235:genetics*; D004032:Diet; D005260:Female; D005838:Genotype; D006801:Humans; D008297:Male; D008460:Meat; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012307:Risk Factors; D013624:Taiwan; D014157:Transcription Factors / Q000235:genetics*; D000076105:X-ray Repair Cross Complementing Protein 1; D051759:Xeroderma Pigmentosum Group D Protein
chemical_list: D004268:DNA-Binding Proteins; D014157:Transcription Factors; D000076105:X-ray Repair Cross Complementing Protein 1; C110901:X-ray repair cross complementing protein 3; C000619371:XRCC1 protein, human; D004265:DNA Helicases; D051759:Xeroderma Pigmentosum Group D Protein; C497292:ERCC2 protein, human