- Histopathologically proven diagnosis of Ependymoma, Medulloblastoma, Pineoblastoma/Pineocytoma, Choroid Plexus Carcinoma/Papilloma, Chordoma, Gliomatosis, Brainstem Glioma, Midline Glioma, ATRT, Atypical/Malignant Meningioma, Gliosarcoma or Primary Brain Sarcoma prior to registration as confirmed by NCI Laboratory of Pathology