EGFR and non-small cell lung carcinoma: Several studies have shown that higher EGFR expression in NSCLC is correlated with poorer survival rates (Scagliotti et al., 2004), increased incidence of lymph node metastasis (Fang et al., 2014), and diminished response to chemotherapy (Ogawa et al., 1993; Swinson et al., 2004).