Testing Longer Duration Radiation Therapy Versus the Usual Radiation Therapy in Patients With Cancer That Has Spread to the Brain
NRG Oncology
NRG Oncology
M.D. Anderson Cancer Center
Memorial Sloan Kettering Cancer Center
NRG Oncology
Universitaire Ziekenhuizen KU Leuven
Eastern Cooperative Oncology Group
Alliance for Clinical Trials in Oncology
University of Texas Southwestern Medical Center
Dana-Farber Cancer Institute
Royal Marsden NHS Foundation Trust
Duke University