Testing What Happens When an Immunotherapy Drug (Pembrolizumab) is Given by Itself Compared to the Usual Treatment of Chemotherapy With Radiation After Surgery for Recurrent Head and Neck Squamous Cell Carcinoma
National Cancer Institute (NCI)
National Cancer Institute (NCI)
University Hospital Heidelberg
Guangzhou Concord Cancer Center
Emory University
Emory University
Emory University
St. Jude Children's Research Hospital
St. Jude Children's Research Hospital
NRG Oncology
NRG Oncology
Massachusetts General Hospital