title: Clinical trial of Iressa.
mesh_terms: D000970:Antineoplastic Agents / Q000627:therapeutic use*; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D000077156:Gefitinib; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy*; D011799:Quinazolines / Q000627:therapeutic use*; D017211:Treatment Failure
chemical_list: D000970:Antineoplastic Agents; D011799:Quinazolines; D000077156:Gefitinib