Recent advancements in glioblastoma treatment have focused on innovative therapies, particularly chimeric antigen receptor (CAR) T cell therapies. A study by Choi et al. explored the use of CARv3-TEAM-E T cells, which target both the epidermal growth factor receptor (EGFR) variant III and the wild-type EGFR. This first-in-human trial demonstrated rapid radiographic tumor regression in two out of three participants, although responses were transient, highlighting the need for sustained therapeutic strategies (ref: Choi doi.org/10.1056/NEJMoa2314390/). Similarly, Brown et al. reported on a phase 1 trial of locoregional delivery of IL-13Rα2-targeting CAR-T cells in recurrent high-grade glioma, confirming the feasibility and safety of this approach without dose-limiting toxicities, thus paving the way for further investigations into optimal dosing strategies (ref: Brown doi.org/10.1038/s41591-024-02875-1/). Bagley et al. also contributed to this theme by presenting interim results from a phase 1 trial of intrathecally delivered bivalent CAR T cells targeting EGFR and IL13Rα2, emphasizing the importance of safety and maximum tolerated dose determination in this patient population (ref: Bagley doi.org/10.1038/s41591-024-02893-z/). Collectively, these studies underscore the potential of CAR T cell therapies in glioblastoma treatment, while also indicating the necessity for ongoing research to enhance the durability of responses and expand treatment options.