{"nct_id":"NCT02255097","title":"Study of MK-3475 (Pembrolizumab) in Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma After Treatment With Platinum-based and Cetuximab Therapy (MK-3475-055/KEYNOTE-055)","status":"COMPLETED","status_verified_date":"2022-06","start_date":"2014-10-24","start_date_type":"ACTUAL","primary_completion_date":"2016-04-22","primary_completion_date_type":"ACTUAL","completion_date":"2021-06-18","completion_date_type":"ACTUAL","phases":["PHASE2"],"tickers":["MRK"]}