title: The DNA repair gene ERCC6 rs1917799 polymorphism is associated with gastric cancer risk in Chinese.
abstract: OBJECTIVE
  Excision repair cross-complementing group 6 (ERCC6) is a major component of the nucleotide excision repair pathway that plays an important role in maintaining genomic stability and integrity. Several recent studies suggested a link of ERCC6 polymorphisms with susceptibility to various cancers. However, the relation of ERCC6 polymorphism with gastric cancer (GC) risk remains elusive. In this sex- and age- matched case-control study including 402 GC cases and 804 cancer-free controls, we aimed to investigate the association between a potentially functional polymorphism (rs1917799 T>G) in the ERCC6 regulatory region and GC risk.
  
  
  METHODS
  The genotypes of rs1917799 were determined by Sequenom MassARRAY platform and the status of Helicobacter pylori infection was detected by enzyme-linked immunosorbent assay. Odd ratios (ORs) and 95% confidential interval (CI) were calculated by logistic regression analysis.
  
  
  RESULTS
  Compared with the common TT genotype, the ERCC6 rs1917799 GG genotype was associated with increased GC risk (adjusted OR=1.46, 95%CI: 1.03-2.08, P=0.035). When compared with (GT+TT) genotypes, the GG genotype also demonstrated a statistical association with increased GC risk (adjusted OR=1.38, 95%CI: 1.01-1.89, P=0.044). This was also observed for the male subpopulation (GG vs. TT: adjusted OR=1.71, 95%CI: 1.12-2.62, P=0.013; G allele vs. T allele: adjusted OR=1.32, 95%CI: 1.07-1.62, P=0.009). Genetic effects on increased GC risk tended to be enhanced by H. pylori infection, smoking and drinking, but their interaction effects on GC risk did not reach statistical significance.
  
  
  CONCLUSIONS
  ERCC6 rs1917799 GG genotype might be associated with increased GC risk in Chinese, especially in males.
authors.affiliation: Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, China E-mail : xcz1966@126.com, yyuan@mail.cmu.edu.cn.
authors.forename: Jing-Wei
authors.initials: JW
authors.lastname: Liu
authors.forename: Cai-Yun
authors.initials: CY
authors.lastname: He
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Sun
authors.forename: Qian
authors.initials: Q
authors.lastname: Xu
authors.forename: Cheng-Zhong
authors.initials: CZ
authors.lastname: Xing
authors.forename: Yuan
authors.initials: Y
authors.lastname: Yuan
mesh_terms: D044466:Asian People / Q000235:genetics*; D016022:Case-Control Studies; D004247:DNA / Q000032:analysis / Q000235:genetics; D004265:DNA Helicases / Q000235:genetics*; D045643:DNA Repair Enzymes / Q000235:genetics*; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005500:Follow-Up Studies; D020022:Genetic Predisposition to Disease; D005838:Genotype; D016481:Helicobacter Infections / Q000097:blood / Q000150:complications / Q000382:microbiology; D016480:Helicobacter pylori / Q000378:metabolism / Q000472:pathogenicity*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D000075223:Poly-ADP-Ribose Binding Proteins; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011379:Prognosis; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000097:blood / Q000209:etiology* / Q000473:pathology
chemical_list: D000075223:Poly-ADP-Ribose Binding Proteins; D004247:DNA; D004265:DNA Helicases; C078673:ERCC6 protein, human; D045643:DNA Repair Enzymes