Stage 1: Marizomib + Bevacizumab in WHO Gr IV GBM; Stage 2: Marizomib Alone; Stage 3: Combination of Marizomib and Bevacizumab

"MRZ dosing in Phase 1 to range from 0.55 to 0.8 mg/m2. Dose Escalation: MRZ dose-escalation will occur using a standard 3+3 study design.~The RP2D of MRZ (0.8.mg/m2) will be used in a two stage design, with fifteen response-evaluable patients entered in the first stage. If 1 or more responses are observed at the MRZ RP2D, then the second stage will be implemented with an additional 15 response-evaluable patients treated."

BEV 10 mg/kg IV infusion administered for all cohorts in Phase 1 only.