Upfront immunotherapy for synchronous high-grade glioma and B-lymphoma in a pediatric patient with CMMRD syndrome.De Vanssay T1, El Riachy N2, Donze C1,3, Appay R2,4, Scavarda D5,6, Testud B7, Andre N1,3, Revon-Rivière G1,3Department of Pediatric Hematology, Immunology and Oncology, APHM, La Timone Children’s Hospital, Marseille, France.Aix-Marseille Univ, CNRS, INP, Inst Neurophysiopathol, GlioME Team, Marseille, FranceREMAP4KIDS, CNRS, INSERM, CRCM, Aix Marseille University, Marseille, France.APHM, CHU Timone, Service d’Anatomie Pathologique et de Neuropathologie, Marseille, FranceDepartment of Pediatric Neurosurgery. APHM Timone Children’s hospital. Marseille FranceAix Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, FranceDepartment of Neuroradiology, APHM, La Timone, Marseille