The recurrent glioblastoma market is projected to grow at a CAGR of 5.85% from 2024 to 2034, driven by advancements in targeted therapies, immunotherapies, and combination treatments. Key developments include targeting EGFR and VEGF pathways, CAR T-cell therapy, and integrating tumor-treating fields with traditional therapies. Leading companies like Novartis, Pfizer, and Roche are innovating treatments, with the U.S. leading in patient pool and treatment advancements.