To substantially enlarge the growing glioma genomic and corollary clinical database currently being generated by the Glioma Molecular Diagnostic Initiative (GMDI) and recorded in the Repository of Malignant Brain Tumor Database (REMBRANDT), through the accrual of any potential glioma patient with banked formalin-fixed, paraffin-embedded (FFPE) tissue blocks rather than restricting accrual to only those patients undergoing surgical resection of their tumor. (NCI Only)