{"nct_id":"NCT01999699","title":"A Study of the Immune Response to Heplisav in Healthy Older Adults","status":"COMPLETED","status_verified_date":"2019-03","start_date":"2013-11","start_date_type":null,"primary_completion_date":"2015-02","primary_completion_date_type":"ACTUAL","completion_date":"2015-03","completion_date_type":"ACTUAL","phases":["PHASE1"],"tickers":["DVAX"]}