Expression of RRM1 and RRM2 as a novel prognostic marker in advanced non-small cell lung cancer receiving chemotherapy

Tumour Biol. 2014 Mar;35(3):1899-906. doi: 10.1007/s13277-013-1255-4. Epub 2013 Oct 24.

Abstract

The aim of this study was to examine the prognostic value of BRCA1, RRM1, and RRM2 in patients with non-small cell lung cancer (NSCLC) who received adjuvant chemotherapy. A total of 418 patients who underwent curative pulmonary resection were obtained between January 2007 and November 2009. The relative cDNA quantification for BRCA1, RRM1, and RRM2 was conducted using a fluorescence-based, real-time detection method, and β-actin was used as a reference gene. The low expression of RRM1 and RRM2 significantly increased the platinum-based chemotherapy response (For RRM1: odds ratio (OR) = 2.09, 95% confidence interval (CI) = 1.38-3.18; For RRM2: OR = 1.64, 95% CI = 1.09-2.48). The univariate analysis indicated that low expression of RRM1 attained a longer time to progression and overall survival time, with HR (95% CI) of 0.50 (0.33-0.77) and 0.60 (0.39-0.92), respectively. Similarly, low expression of RRM2 had a longer time to progression and overall survival, with HR (95% CI) of 0.57 (0.38-0.86) and 0.47 (0.31-0.71), respectively. In conclusion, low expression of RRM1 and RRM2 could be used to predict the treatment response to platinum-based chemotherapy and survival in NSCLC. The RRM1 and RRM2 could substantially contribute to the future design of individualized cancer treatment in NSCLC patients.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use
  • Biomarkers, Tumor / analysis*
  • Carboplatin / administration & dosage
  • Carcinoma, Non-Small-Cell Lung / drug therapy
  • Carcinoma, Non-Small-Cell Lung / metabolism*
  • Carcinoma, Non-Small-Cell Lung / mortality
  • Cisplatin / administration & dosage
  • Deoxycytidine / administration & dosage
  • Deoxycytidine / analogs & derivatives
  • Disease-Free Survival
  • Female
  • Gemcitabine
  • Humans
  • Kaplan-Meier Estimate
  • Lung Neoplasms / drug therapy
  • Lung Neoplasms / metabolism*
  • Lung Neoplasms / mortality
  • Male
  • Middle Aged
  • Paclitaxel / administration & dosage
  • Prognosis
  • Proportional Hazards Models
  • Ribonucleoside Diphosphate Reductase / analysis
  • Ribonucleoside Diphosphate Reductase / biosynthesis*
  • Tumor Suppressor Proteins / analysis
  • Tumor Suppressor Proteins / biosynthesis*
  • Vinblastine / administration & dosage
  • Vinblastine / analogs & derivatives
  • Vinorelbine

Substances

  • Biomarkers, Tumor
  • Tumor Suppressor Proteins
  • Deoxycytidine
  • Vinblastine
  • Carboplatin
  • ribonucleotide reductase M2
  • RRM1 protein, human
  • Ribonucleoside Diphosphate Reductase
  • Paclitaxel
  • Cisplatin
  • Vinorelbine
  • Gemcitabine