Research on immunotherapy in glioblastoma (GBM) has highlighted the complex interplay between the immune microenvironment and tumor progression. A study identified distinct types of mutation-harboring precancerous cells in a mouse model of GBM, revealing their role in intratumoral heterogeneity and oncogenic program acquisition (ref: Kim doi.org/10.1158/2159-8290.CD-24-0234/). Another investigation demonstrated that dual blockade of TGFβ and PD-1 significantly enhanced anti-glioma immunity, leading to a 60% tumor eradication rate in treated mice, underscoring the potential of combinatorial immunotherapy strategies (ref: Hou doi.org/10.1093/neuonc/). Furthermore, a phase I/II trial showed that concurrent treatment with atezolizumab, radiation, and temozolomide improved overall survival in newly diagnosed GBM patients, correlating with specific immune and microbiome features (ref: Weathers doi.org/10.1038/s41467-025-56930-7/). These findings collectively suggest that enhancing immune responses through targeted therapies could be pivotal in overcoming the immunosuppressive tumor microenvironment characteristic of GBM. Additionally, novel approaches such as the use of SPP1/integrin signaling-blocking peptides have shown promise in reversing immunosuppression and improving outcomes in anti-PD-1 therapies (ref: Ellert-Miklaszewska doi.org/10.1186/s13046-025-03393-9/).