Nivolumab With or Without Ipilimumab in Treating Patients With Refractory Metastatic Anal Canal Cancer
National Cancer Institute (NCI)
National Cancer Institute (NCI)
AIDS Malignancy Consortium
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Institut du Cancer de Montpellier - Val d'Aurelle
Eastern Cooperative Oncology Group
Duke University
Instituto do Cancer do Estado de São Paulo
University of California, San Francisco
AHS Cancer Control Alberta
Karolinska Institutet
AIDS Malignancy Consortium
Tata Memorial Centre
Centre Hospitalier Universitaire de Besancon
University of Sao Paulo
Sun Yat-sen University
M.D. Anderson Cancer Center
Eastern Cooperative Oncology Group
Eastern Cooperative Oncology Group
Centre Hospitalier Universitaire de Besancon
Sixth Affiliated Hospital, Sun Yat-sen University
UNICANCER
Centre Hospitalier Universitaire de Besancon
Radiation Therapy Oncology Group
Sixth Affiliated Hospital, Sun Yat-sen University
Radiation Therapy Oncology Group
AHS Cancer Control Alberta
Instituto do Cancer do Estado de São Paulo
National Cancer Institute (NCI)