Nivolumab With or Without Ipilimumab in Treating Patients With Refractory Metastatic Anal Canal Cancer
National Cancer Institute (NCI)
National Cancer Institute (NCI)
University of Pittsburgh
National Cancer Institute (NCI)
M.D. Anderson Cancer Center
City of Hope Medical Center
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Providence Health & Services
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Dana-Farber Cancer Institute
Memorial Sloan Kettering Cancer Center
Bristol-Myers Squibb
Duke University
Brown University
H. Lee Moffitt Cancer Center and Research Institute
Agenus Inc.
University of Texas Southwestern Medical Center