{"nct_id":"NCT00617305","title":"Study of Add-on Ambrisentan Therapy to Background Phosphodiesterase Type-5 Inhibitor (PDE5i) Therapy in Pulmonary Arterial Hypertension (ATHENA-1)","status":"COMPLETED","status_verified_date":"2012-06","start_date":"2008-04","start_date_type":null,"primary_completion_date":"2011-02","primary_completion_date_type":"ACTUAL","completion_date":"2011-07","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["GILD"]}