title: Polymorphisms of the DNA repair gene XRCC1 and lung cancer risk.
abstract: We explored the association between polymorphisms of the DNA repair gene XRCC1 (codons 194, 280, and 399) and lung cancer risk in a case-control study nested within a cohort of tin miners. Cases were those diagnosed with lung cancer over 6 years of follow-up (n = 108). Two controls, matched on age and sex, were selected for each case by incidence density sampling. Of the three polymorphisms, only the XRCC1 Arg280His allele was associated with increased lung cancer risk (odds ratio, 1.8; 95% confidence interval, 1.0-3.4) after adjustment for radon and tobacco exposure. In addition, individuals with the variant Arg280His allele who were alcohol drinkers seemed to be at higher risk for lung cancer compared with those with the homozygous wild-type genotype. Conversely, individuals with the variant Arg194Trp allele who were alcohol drinkers seemed to be at lower risk for lung cancer compared with those with the homozygous wild-type genotype. Polymorphisms of XRCC1 appear to influence risk of lung cancer and may modify risk attributable to environmental exposures.
authors.affiliation: Division of Clinical Sciences, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA. DR132K@NIH.gov
authors.forename: D
authors.initials: D
authors.lastname: Ratnasinghe
authors.forename: S X
authors.initials: SX
authors.lastname: Yao
authors.forename: J A
authors.initials: JA
authors.lastname: Tangrea
authors.forename: Y L
authors.initials: YL
authors.lastname: Qiao
authors.forename: M R
authors.initials: MR
authors.lastname: Andersen
authors.forename: M J
authors.initials: MJ
authors.lastname: Barrett
authors.forename: C A
authors.initials: CA
authors.lastname: Giffen
authors.forename: Y
authors.initials: Y
authors.lastname: Erozan
authors.forename: M S
authors.initials: MS
authors.lastname: Tockman
authors.forename: P R
authors.initials: PR
authors.lastname: Taylor
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D001483:Base Sequence; D016022:Case-Control Studies; D015331:Cohort Studies; D016001:Confidence Intervals; D004268:DNA-Binding Proteins / Q000235:genetics*; D005260:Female; D006801:Humans; D015994:Incidence; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D011446:Prospective Studies; D012307:Risk Factors; D017678:Sex Distribution; D015996:Survival Rate; D014481:United States / Q000453:epidemiology; D000076105:X-ray Repair Cross Complementing Protein 1
chemical_list: D004268:DNA-Binding Proteins; D000076105:X-ray Repair Cross Complementing Protein 1; C000619371:XRCC1 protein, human