title: Lack of response to erlotinib after progression on gefitinib in patients with advanced non-small cell lung cancer.
authors.forename: D
authors.initials: D
authors.lastname: Garfield
mesh_terms: D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy* / Q000235:genetics; D002986:Clinical Trials as Topic; D019008:Drug Resistance, Neoplasm / Q000187:drug effects* / Q000235:genetics; D066246:ErbB Receptors / Q000235:genetics; D000069347:Erlotinib Hydrochloride; D005260:Female; D000077156:Gefitinib; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000235:genetics; D008297:Male; D009154:Mutation; D011799:Quinazolines / Q000008:administration & dosage*
chemical_list: D011799:Quinazolines; D000069347:Erlotinib Hydrochloride; D066246:ErbB Receptors; D000077156:Gefitinib