title: XRCC1 genetic polymorphism Arg399Gln and gastric cancer risk: A meta-analysis.
abstract: OBJECTIVE
  To evaluate the association between X-ray cross-complementing gene 1 (XRCC1) genetic polymorphism Arg399Gln and gastric cancer risk by means of meta-analysis.
  
  
  METHODS
  We searched PubMed and NCBI up to June 1, 2008. A total of 16 clinical trials and reports were identified, but only 8 trials qualified under our selection criteria. Statistical analysis was performed with the software program Review Manage, version 4.2.8.
  
  
  RESULTS
  Of the 8 case-control studies selected for this meta-analysis, a total of 1334 gastric cancer cases and 2194 controls were included. For Arg399Gln, the Gln/Gln genotype carriers did not have a decreased cancer risk compared with those individuals with the Arg/Arg genotype (OR = 0.92, 95% CI, 0.71-1.19; P = 0.51). Similarly, no associations were found in the recessive and dominant modeling (Gln/Gln vs Arg/Gln + Arg/Arg: OR = 0.96; 95% CI, 0.77-1.19; P = 0.70 and Gln/Gln + Arg/Gln vs Arg/Arg: OR = 0.90, 95% CI, 0.77-1.05; P = 0.18).
  
  
  CONCLUSIONS
  No association is found between the XRCC1 polymorphism Arg399Gln and gastric cancer risk.
authors.affiliation: Department of Oncology, Nanjing University School of Medicine, Jinling Hospital, 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Geng
authors.forename: You-Wei
authors.initials: YW
authors.lastname: Zhang
authors.forename: Gui-Chun
authors.initials: GC
authors.lastname: Huang
authors.forename: Long-Bang
authors.initials: LB
authors.lastname: Chen
mesh_terms: D016022:Case-Control Studies; D004268:DNA-Binding Proteins / Q000235:genetics*; D020022:Genetic Predisposition to Disease / Q000235:genetics; D005838:Genotype; D006801:Humans; D011110:Polymorphism, Genetic / Q000235:genetics*; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000235:genetics*; 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