Moreover, Rosell and colleagues performed different studies examining the role of both ERCC1 and RRM1 mRNA expression in paraffin-embedded pretreatment bronchial biopsies from patients with advanced NSCLC [Rosell et al. 2006; Rosell et al. 2003; Rosell et al. 2004]. The gene discussed is ERCC1; the disease is non-small cell lung carcinoma.