Two panels of plasma microRNAs as non-invasive biomarkers for prediction of recurrence in resectable NSCLC

PLoS One. 2013;8(1):e54596. doi: 10.1371/journal.pone.0054596. Epub 2013 Jan 16.

Abstract

The diagnosis of non-small cell lung carcinoma (NSCLC) at an early stage, as well as better prediction of outcome remains clinically challenging due to the lack of specific and robust non-invasive markers. The discovery of microRNAs (miRNAs), particularly those found in the bloodstream, has opened up new perspectives for tumor diagnosis and prognosis. The aim of our study was to determine whether expression profiles of specific miRNAs in plasma could accurately discriminate between NSCLC patients and controls, and whether they are able to predict the prognosis of resectable NSCLC patients. We therefore evaluated a series of seventeen NSCLC-related miRNAs by quantitative real-time (qRT)-PCR in plasma from 52 patients with I-IIIA stages NSCLC, 10 patients with chronic obstructive pulmonary disease (COPD) and 20-age, sex and smoking status-matched healthy individuals. We identified an eleven-plasma miRNA panel that could distinguish NSCLC patients from healthy subjects (AUC = 0.879). A six-plasma miRNA panel was able to discriminate between NSCLC patients and COPD patients (AUC = 0.944). Furthermore, we identified a three-miRNA plasma signature (high miR-155-5p, high miR-223-3p, and low miR-126-3p) that significantly associated with a higher risk for progression in adenocarcinoma patients. In addition, a three-miRNA plasma panel (high miR-20a-5p, low miR-152-3p, and low miR-199a-5p) significantly predicted survival of squamous cell carcinoma patients. In conclusion, we identified two plasma miRNA expression profiles that may be useful for predicting the outcome of patients with resectable NSCLC.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Carcinoma, Non-Small-Cell Lung / blood*
  • Female
  • Humans
  • Lung Neoplasms / blood*
  • Male
  • MicroRNAs / blood*

Substances

  • MicroRNAs

Grants and funding

This work was partly supported by grants from the Cancéropole PACA (Axe C, 2011 and 2012), and by the “Fondation ARC pour la recherche sur le cancer” ARC SL220110603478 (PH, PB, MI). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.