ERCC1 and non-small cell lung carcinoma: Moreover, epidermal growth factor receptor (EGFR), human EGFR-2, excision repair cross-complementation group 1, ribonucleotide reductase M1, and breast cancer gene (BRCA have been proposed as prognostic and predictive biomarkers in early-stage non-small-cell lung cancer (NSCLC) [4].