International Rare Brain Tumor Registry

The objective of the International Rare Brain Tumor Registry (IRBTR) is to better understand rare brain tumors through the collection of biospecimens and matched clinical data of children, adolescents, and young adult patients diagnosed with rare brain tumors.

Inclusion Criteria: * Patients with a known or suspected CNS Sarcoma. * Patients with a known or suspected BCOR-altered brain tumor * Patients with a known or suspected Astroblastoma/NM-1 altered brain tumor * Patients with known or suspected histologically ambiguous/unclassifiable brain tumor * Patients with a known or suspected rare brain tumor. * Signed informed consent by patient/ parent or guardian (assent where applicable) to participate in the study. Exclusion Criteria: * The patient has an extra-CNS primary tumor. * The patient is older than 46 years of age at diagnosis. * The patient or family is not willing to participate or does not sign informed consent.