Dexamethasone use could reduce immune checkpoint inhibitor viability in glioblastoma patients Kumar Jeetendra | November 25, 2020 Bottom Line: One of patients with glioblastoma getting an immune checkpoint inhibitor, people who obtained the corticosteroid dexamethasone at baseline for cerebral edema had significantly worse overall survival. Journal Where the Study was Released: Clinical Cancer Research, a journal of the American Association for Cancer Research Author: David A. Reardon, MD, clinical director of the …