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)
National Cancer Institute (NCI)
Merck Sharp & Dohme LLC
Hoffmann-La Roche
Eastern Cooperative Oncology Group
NRG Oncology
Eastern Cooperative Oncology Group
AstraZeneca
Merck Sharp & Dohme LLC
AstraZeneca