title: An intronic poly (AT) polymorphism of the DNA repair gene XPC and risk of squamous cell carcinoma of the head and neck: a case-control study.
abstract: Inherited polymorphisms of DNA repair genes may contribute to variations in DNA repair capacity and genetic susceptibility to cancer. In a hospital-based case-control study of 287 non-Hispanic white patients with newly diagnosed SCCHN and 311 control subjects matched on age, sex, ethnicity, and smoking status, we investigated the role of a newly identified variant allele of XPC, XPC-PAT+. We found that the frequency of the XPC-PAT+ allele was higher in the cases (0.409) than in the controls (0.333; P = 0.007). Fifty cases (17.4%) and 37 controls (11.9%) were XPC-PAT+/+, and 135 (47.0%) cases and 133 controls (42.8%) were XPC-PAT+/-. XPC-PAT+/- and XPC-PAT+/+ subjects were at significantly increased risk for SCCHN [adjusted odds ratios = 1.44 and 1.85, respectively (95% confidence intervals, 1.01-2.05 and 1.12-3.05, respectively; trend test, P = 0.007)]. We did not find ethnic difference in the frequency of XPC-PAT+ allele among four groups aged between 19 and 75 years: non-Hispanic whites, 294; African-Americans, 178; Hispanic-Americans, 103; and native Chinese, 119 (0.333, 0.281, 0.296, and 0.353, respectively). The case-control findings support the hypothesis that the XPC-PAT+ allele may contribute to the risk of developing SCCHN.
authors: Department of Epidemiology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.
authors: H
authors: H
authors: Shen
authors: E M
authors: EM
authors: Sturgis
authors: S G
authors: SG
authors: Khan
authors: Y
authors: Y
authors: Qiao
authors: T
authors: T
authors: Shahlavi
authors: S A
authors: SA
authors: Eicher
authors: Y
authors: Y
authors: Xu
authors: X
authors: X
authors: Wang
authors: S S
authors: SS
authors: Strom
authors: M R
authors: MR
authors: Spitz
authors: K H
authors: KH
authors: Kraemer
authors: Q
authors: Q
authors: Wei
mesh_terms: D000368:Aged; D000483:Alleles; D002294:Carcinoma, Squamous Cell / Q000235:genetics*; D016022:Case-Control Studies; D004260:DNA Repair / Q000235:genetics*; D005006:Ethnicity / Q000235:genetics; D005260:Female; D005838:Genotype; D006258:Head and Neck Neoplasms / Q000235:genetics*; D006801:Humans; D007438:Introns; D008297:Male; D008875:Middle Aged; D011061:Poly A / Q000235:genetics*; D011071:Poly T / Q000235:genetics*; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide; D014983:Xeroderma Pigmentosum / Q000235:genetics
chemical_list: D011061:Poly A; D011071:Poly T; C008950:poly A-T