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)
Eastern Cooperative Oncology Group
Eastern Cooperative Oncology Group
Mayo Clinic
NRG Oncology
Eastern Cooperative Oncology Group
Sun Yat-sen University