Testing the Use of Investigational Drugs Atezolizumab and/or Bevacizumab With or Without Standard Chemotherapy in the Second-Line Treatment of Advanced-Stage Head and Neck Cancers
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Merck Sharp & Dohme LLC
Hoffmann-La Roche
Eastern Cooperative Oncology Group
AstraZeneca
NRG Oncology
Merck Sharp & Dohme LLC
Merck Sharp & Dohme LLC
National Cancer Institute (NCI)