Overview Head and Neck Phase III Iressa Versus Methotrexate Refractory: Iressa Versus Methotrexate (IMEX) Status: Completed Trial end date: 2007-09-01 Target enrollment: Participant gender: Summary This study is to compare ZD1839 (250mg and 500mg) versus methotrexate in head and neck cancer in terms of overall survival. Phase: Phase 3 Details Lead Sponsor: AstraZenecaTreatments: GefitinibMethotrexate