{"nct_id":"NCT01251835","title":"Effect Of Rifampin On Pharmacokinetics Of Sitaxsentan","status":"WITHDRAWN","status_verified_date":"2011-01","start_date":"2010-12","start_date_type":null,"primary_completion_date":"2011-01","primary_completion_date_type":"ESTIMATED","completion_date":"2011-01","completion_date_type":"ESTIMATED","phases":["PHASE1"],"tickers":["PFE"]}