International Rare Brain Tumor Registry

Who May Qualify: - 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 willing to sign a consent form by patient/ parent or guardian (assent where applicable) to participate in the study. Who Should NOT Join This Trial: - 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 willing to sign a consent form. Always talk to your doctor about whether this trial is right for you.