Nivolumab With or Without Ipilimumab in Treating Patients With Refractory Metastatic Anal Canal Cancer
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Eastern Cooperative Oncology Group
Brigham and Women's Hospital
Merck Sharp & Dohme LLC
SOLTI Breast Cancer Research Group
Centre Hospitalier Universitaire de Besancon
University of Cincinnati
Goethe University