Avelumab With Hypofractionated Radiation Therapy in Adults With Isocitrate Dehydrogenase (IDH) Mutant Glioblastoma

The active pharmaceutical ingredient in Avelumab (MSB0010718C) is a fully human antibody of the immunoglobulin gamma-1 (IgG1) isotype that specifically targets and blocks the Programmed death-ligand 1(PD-L1) for Programmed cell death protein 1 (PD-1). Avelumab binds PD-L1 and blocks the interaction between PD-L1 and PD-1. This removes the suppressive effects of PD-L1 on anti-tumor cluster of differentiation 8 (CD8)+ T cells, resulting in the restoration of cytotoxic T cell response.