110
Participants
Start Date
June 3, 2015
Primary Completion Date
December 21, 2025
Study Completion Date
December 21, 2025
Biospecimen Collection
Undergo CSF and blood sample collection
Conventional Magnetic Resonance Imaging
Undergo standard MRI
Diffusion Tensor Imaging
Undergo DTI
Diffusion Weighted Imaging
Undergo MR diffusion imaging
Dynamic Contrast-enhanced MR Perfusion
Undergo DCE permeability MRI
Dynamic Susceptibility Contrast-Perfusion-Weighted Imaging
Undergo DSC perfusion MRI
Magnetic Resonance Spectroscopic Imaging
Undergo MR spectroscopy
Pembrolizumab
Given IV
Memorial Sloan Kettering Cancer Center, New York
Children's Hospital of Pittsburgh of UPMC, Pittsburgh
Children's National Medical Center, Washington D.C.
Children's Healthcare of Atlanta - Arthur M Blank Hospital, Atlanta
Saint Jude Children's Research Hospital, Memphis
Cincinnati Children's Hospital Medical Center, Cincinnati
Lurie Children's Hospital-Chicago, Chicago
Texas Children's Hospital, Houston
Children's Hospital Colorado, Aurora
Children's Hospital Los Angeles, Los Angeles
Lucile Packard Children's Hospital Stanford University, Palo Alto
Hospital for Sick Children, Toronto
National Cancer Institute (NCI)
NIH