{"nct_id":"NCT00770588","title":"Assess the Efficacy, Safety and Tolerability of Gefitinib (Iressa® 250mg) as Maintenance Therapy in Locally Advanced or Metastatic (Stage IIIB/IV) Non Small Cell Lung Cancer (NSCLC)","status":"COMPLETED","status_verified_date":"2012-08","start_date":"2008-09","start_date_type":null,"primary_completion_date":"2011-01","primary_completion_date_type":"ACTUAL","completion_date":"2011-02","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["AZN"]}