title: Nucleotide excision repair gene polymorphisms and prognosis of non-small cell lung cancer patients receiving platinum-based chemotherapy: A meta-analysis based on 44 studies.
abstract: Genetic variations are linked to DNA repair ability and varied drug metabolism that largely affects the prognosis of antineoplastic agents, including platinum. The purpose of the present meta-analysis was to determine the roles of the genetic variants of the nucleotide excision repair genes on the prognosis of platinum-based chemotherapy in patients with non-small cell lung cancer (NSCLC). A meta-analysis was performed, including 44 original studies with a total number of 5,944 patients with NSCLC according to the search strategy. The tumor responses [complete response, partial response, stable disease (SD) and progressive disease (PD)] were estimated and the Stata package was used for the comprehensive quantitative analyses. The results showed that theXPG C46Tpolymorphism was significantly associated with tumor chemotherapy when SD or PD was considered as a non-response [TT vs. CC: risk ratio (RR), 1.31; 95% confidence interval (CI), 1.14-1.5; and P=0.00; TT/CT vs. CC: RR, 1.23; 95% CI, 1.11-1.36; and P=0.00; and TT vs.
  RR, 1.22; 95% CI, 1.11-1.36; and P=0.00]. No significant association between theERCC1 C118T/C8092A XPDLys751GlnandXPA A23Gpolymorphisms and tumor response was found. There was also no evidence found to support the use of theERCC1 C118T/C8092A XPDLys751GlnandXPA A23Gpolymorphisms as prognostic predictors of platinum-based chemotherapies in NSCLC in the meta-analysis. For theXPG C46Tpolymorphisms, a significant association with an objective response was detected. Multiple and large-scale studies are required to further investigate the association between biomarkers and tumor prognosis.
authors.affiliation: Department of Oncology, Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, P.R. China.
authors.forename: Dongning
authors.initials: D
authors.lastname: Huang
authors.affiliation: School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhou
keywords: meta-analysis; non-small cell lung cancer; nucleotide excision repair; platinum-based chemotherapy; polymorphism