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)
Mayo Clinic
NRG Oncology
M.D. Anderson Cancer Center
Massachusetts General Hospital
Mayo Clinic
Massachusetts General Hospital
Emory University
NRG Oncology
Mayo Clinic
Heidelberg University
Odense University Hospital
Fudan University
Massachusetts General Hospital
Massachusetts General Hospital