{"nct_id":"NCT01262352","title":"Study of the Effect of Ivacaftor on Lung Clearance Index in Subjects With Cystic Fibrosis and the G551D Mutation","status":"COMPLETED","status_verified_date":"2013-02","start_date":"2011-01","start_date_type":null,"primary_completion_date":"2011-11","primary_completion_date_type":"ACTUAL","completion_date":"2011-11","completion_date_type":"ACTUAL","phases":["PHASE2"],"tickers":["VRTX"]}