Medical Oncology

, Volume 29, Issue 3, pp 1622–1628

DNA repair gene polymorphism associated with sensitivity of lung cancer to therapy


    • Department of OncologyChongqing Cancer Institute
  • Qi Zhou
    • Department of OncologyChongqing Cancer Institute
  • Yu Liu
    • Department of OncologyChongqing Cancer Institute
  • Yanqing Yang
    • National Engineering Center for Biochip at Shanghai
  • Qiying Li
    • Department of OncologyChongqing Cancer Institute
Original Paper

DOI: 10.1007/s12032-011-0033-7

Cite this article as:
Li, D., Zhou, Q., Liu, Y. et al. Med Oncol (2012) 29: 1622. doi:10.1007/s12032-011-0033-7


This study aimed to investigate association between single-nucleotide polymorphisms (SNPs) of excision repair cross-complementing gene 1 (ERCC1), excision repair cross-complementing gene 2 (ERCC2), and X-ray repair cross-complementing group 1 (XRCC1) with sensitivity of advanced non-small cell lung cancer (NSCLC) patients to platinum-based chemotherapy. A total of 89 NSCLC patients were recruited and treated with two cycles of platinum-based chemotherapy. DNA was extracted from peripheral lymphocytes for detection of SNPs of ERCC1 Asn118Asn, ERCC2 Lys751Gln, and XRCC1 Arg399Gln. The overall response rate of these patients was 29.2%. There was no statistically significant difference of treatment response between the wild genotypes and the variant genotypes for the ERCC1 Asn118Asn and ERCC2 Lys751Gln gene. The distributions of genotypes XRCC1 Arg399Gln differed significantly between the response and non-response groups (76.9 vs. 23.1%, P = 0.001). The XRCC1 399Arg/Arg genotype carriers had a higher response rate than that of the Gln genotype carriers (OR = 4.81, 95%CI = 1.778–13.013, P = 0.002). The combination of the favorable genotypes of ERCC1, ERCC2, and XRCC1 had a higher response rate compared to that of patients with other genotypes. The combined polymorphisms of ERCC1, ERCC2, and XRCC1 may be associated with sensitivity of NSCLC to platinum-based chemotherapy. Further studies will verify these SNPs as biomarkers for prediction of platinum-based chemotherapy responses of NSCLC patients.


Single-nucleotide polymorphismExcision repair cross-complementing gene 1Excision repair cross-complementing gene 2X-ray repair cross-complementing 1Non-small cell lung cancerChemotherapy

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© Springer Science+Business Media, LLC 2011