title: Polymorphisms in the DNA repair gene XRCC1 associated with basal cell carcinoma and squamous cell carcinoma of the skin in a Korean population.
abstract: DNA in most cells is regularly damaged by endogenous and exogenous mutagens. Unrepaired damage can result in apoptosis or may lead to unregulated cell growth and cancer. Inheritance of genetic variants at one or more loci results in reduced DNA repair capacity. This hospital-based case-control study examined whether polymorphisms in the DNA repair gene X-ray repair cross-complementing groups 1 (XRCC1) (Arg194Trp[C > T], Arg280His[G > A] and Arg399Gln[G > A]) play a role in susceptibility to skin cancer. We genotyped these polymorphisms for 212 histopathologically confirmed skin cancer cases (n = 114 basal cell carcinoma, n = 98 squamous cell carcinoma) and 207 age- and sex-matched healthy control cases in Korea. We found that individuals with the Arg/Gln and Arg/Gln + Gln/Gln genotypes at XRCC1 Arg399Gln(G > A) had an approximately 2-fold increased risk of basal cell carcinoma compared to individuals with the Arg/Arg genotype (adjusted odds ratio [AOR] = 2.812, 95% confidence interval [CI] 1.32-5.98, and AOR = 2.324, 95% CI 1.11-4.86). However, we observed that the 194Trp allele of the Arg194Trp(C > T) polymorphism was inversely associated with squamous cell carcinoma risk (Trp/Trp, AOR = 0.06, 95% CI 0.006-0.63). Our data suggest that the Arg194Trp and Arg399Gln polymorphisms may be differentially associated with skin cancer risk.
authors.affiliation: Institute for Clinical Research, and Department of Plastic and Reconstructive Surgery, Bundang CHA General Hospital, College of Medicine, Pochon CHA University, Seongnam, South Korea.
authors.forename: Sang Yoon
authors.initials: SY
authors.lastname: Kang
authors.forename: Kwang Gil
authors.initials: KG
authors.lastname: Lee
authors.forename: Wooseung
authors.initials: W
authors.lastname: Lee
authors.forename: Jeong Yun
authors.initials: JY
authors.lastname: Shim
authors.forename: Seung Il
authors.initials: SI
authors.lastname: Ji
authors.forename: Ki Wha
authors.initials: KW
authors.lastname: Chung
authors.forename: Yoon Kyu
authors.initials: YK
authors.lastname: Chung
authors.forename: Nam Keun
authors.initials: NK
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People / Q000235:genetics; D002280:Basal Cell Carcinoma / Q000208:ethnology / Q000235:genetics* / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000208:ethnology / Q000235:genetics* / Q000473:pathology; D016022:Case-Control Studies; D004268:DNA-Binding Proteins / Q000235:genetics*; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000208:ethnology; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D007723:Korea; D008875:Middle Aged; D016017:Odds Ratio; D011110:Polymorphism, Genetic; D012878:Skin Neoplasms / Q000208:ethnology / Q000235:genetics* / Q000473:pathology; 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