Real-World Application of PD-1 Inhibitors in High-Grade Glioma: A Case Series

Background/Objectives: Patients with high-grade glioma (HGG) have a poor prognosis despite maximal safe resection, radiotherapy, and chemotherapy, partly because of the immunosuppressive tumor microenvironment. Unfortunately, all phase III trials of anti-PD-1 therapy to date have failed to yield positive results in HGGs. Recent early-phase trials have identified promising strategies involving immune checkpoint inhibitors. Here, we share our 8-year experience with anti-PD-1 therapy in patients with HGG in a real-world setting.