Gene Polymorphism of XRCC1 Arg399Gln and Cervical Carcinoma Susceptibility in Asians: A Meta-analysis Based on 1,759 Cases and 2,497 Controls

  • Liu, Yi-Ting (Department of Clinical Epidemiology, The First Affiliated Hospital of China Medical University) ;
  • Shi, Jing-Pu (Department of Clinical Epidemiology, The First Affiliated Hospital of China Medical University) ;
  • Fu, Ling-Yu (Department of Clinical Epidemiology, The First Affiliated Hospital of China Medical University) ;
  • Zhou, Bo (Department of Clinical Epidemiology, The First Affiliated Hospital of China Medical University) ;
  • Wang, Hai-Long (Department of Clinical Epidemiology, The First Affiliated Hospital of China Medical University) ;
  • Wu, Xiao-Mei (Department of Clinical Epidemiology, The First Affiliated Hospital of China Medical University)
  • Published : 2013.01.31


Many epidemiological studies in Asian populations have investigated associations between the Arg399Gln gene polymorphism of X-ray repair cross complementing gene 1 (XRCC1) and risk of cervical carcinoma, but no conclusions have been available because of controversial results. Therefore a meta-analysis was conducted for clarification. Relevant studies were identified by searching the Pubmed, Embase, the Web of Science, Cochrane Collaboration's database, Chinese National Knowledge Infrastructure (CNKI), Wanfang database and China Biological Medicinse (CBM) until September, 2012. A total of eight studies were included in the present meta-analysis, which described 1,759 cervical carcinoma cases and 2,497 controls. Odds ratios (ORs) and corresponding 95% confidence intervals (95%CIs) as effect size were calculated by fixed-effect or random-effect models. The overall results indicated that the XRCC1-399G/A polymorphism was marginally associated with cervical carcinoma in Asians: OR (95%CI): 1.16 (1.07, 1.26) in the G/A vs G/G inheritance model, 1.24 (0.87, 1.76)in A/A vs G/G inheritance model, 1.13 (1.01, 1.27) in the dominant inheritance model and 1.18 (0.94, 1.47) in the recessive inheritance model. Subgroup analyses on sample size showed no significant correlation in the small-sample size group but the large-sample size group was consistent with the outcomes of overall meta-analysis. In the subgroup analysis by regions, we only found significant association under the G/A vs G/G inheritance model in the Chinese population. For the non-Chinese populations, no correlation was detected in any genetic inheritance model. In the Asian populations, XRCC1-399G/A gene polymorphism was implied to be associated with cervical carcinoma.


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