{"nct_id":"NCT00252811","title":"A Study of ZD1839 Effects on Cell Proliferation in Breast Cancer","status":"WITHDRAWN","status_verified_date":"2011-01","start_date":"2004-02","start_date_type":null,"primary_completion_date":null,"primary_completion_date_type":null,"completion_date":null,"completion_date_type":null,"phases":["PHASE2"],"tickers":["AZN"]}