Overview Phase II Neoadjuvant ER+/PgR + Arimidex +/- Iressa Study Status: Completed Trial end date: 2005-11-01 Target enrollment: Participant gender: Summary The purpose of this study is to compare the changes in a proliferation biomarker in subjects receiving Anastrozole or Anastrozole/ZD1839 combination. Phase: Phase 2 Details Lead Sponsor: AstraZenecaTreatments: AnastrozoleGefitinib