International Rare Brain Tumor Registry

This international registry collects data on patients with rare and unusual brain tumors — including CNS sarcomas, BCOR-altered tumors, astroblastomas, and other hard-to-classify brain cancers — to help researchers better understand and treat these conditions. **You may be eligible if...** - You have been diagnosed with (or are suspected to have) a rare brain tumor such as CNS sarcoma, BCOR-altered tumor, astroblastoma, or another unclassifiable brain tumor - You (or your parent/guardian) are willing to sign an informed consent - You were diagnosed at age 46 or younger **You may NOT be eligible if...** - Your primary tumor is outside the brain or spine (CNS) - You or your family are unwilling to participate or provide consent - You are older than 46 at the time of diagnosis Talk to your doctor to see if this trial is right for you.