Inhibitory Fcγ Receptor Deletion Enhances CD8 T Cell Stemness, Increasing Anti-PD-1 Therapy Responsiveness in Glioblastoma Background and Objectives of the Study Glioblastoma (GBM) is an aggressive central nervous system tumor with poor prognosis, and the median survival of patients is only 14.6 months. Despite the significant efficacy of immune ch...