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)
Children's Oncology Group
Children's Oncology Group
Cellectar Biosciences, Inc.
City of Hope Medical Center
Dana-Farber Cancer Institute
Pediatric Brain Tumor Consortium
University of Florida
Seattle Children's Hospital