Effect of X-ray repair cross complementing group 1 polymorphisms on the efficacy of platinum-based chemotherapy in patients with nonsmall cell lung cancer.

AIMS X-ray repair cross complementing group 1 (XRCC1) has been indicated to be correlated with the efficacy of platinum-based chemotherapy. But study results were still debatable. Thus, a meta-analysis was conducted. MATERIALS AND METHODS A literature search was performed using the PubMed, EMBASE, CNKI, with the databases being last accessed on November 24, 2014. Odds ratios with 95% confidence intervals were used to assess the strength of the association. RESULTS In this meta-analysis, we found that XRCC1 Arg194Trp polymorphism was significantly associated with the efficacy of platinum-based chemotherapy. However, XRCC1 Arg399Gln polymorphism showed no impact on the efficacy of platinum-based chemotherapy. CONCLUSION This meta-analysis suggested that the XRCC1 Arg194Trp polymorphism may be associated with efficacy of platinum-based chemotherapy. Further studies with a larger sample size are needed to further assess this result.