Pembrolizumab in Treating Younger Patients With Recurrent, Progressive, or Refractory High-Grade Gliomas, Diffuse Intrinsic Pontine Gliomas, Hypermutated Brain Tumors, Ependymoma or Medulloblastoma
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Massachusetts General Hospital
Emory University
Neonc Technologies, Inc.
Roswell Park Cancer Institute
M.D. Anderson Cancer Center
Case Comprehensive Cancer Center