Humans 13 epidermal growth factor receptor human 13 EGFR protein, human 12 ErbB Receptors 11 genetics 11 Lung Neoplasms 8 Protein Kinase Inhibitors 8 lung tumor 8 protein kinase inhibitor 8 Carcinoma, Non-Small-Cell Lung 7 Cell Line, Tumor 7 Mutation 7 mutation 7 non small cell lung cancer 7 pathology 7 tumor cell line 7 Article 6 metabolism 6 controlled study 5 Aged 4 Retrospective Studies 4 aged 4 retrospective study 4 unclassified drug 4 Drug Resistance, Neoplasm 3 EGFR 3 Female 3 apoptosis 3 cell proliferation 3