The molecular characterization of IDH-mutant gliomas has gained significant attention due to its implications for prognosis and treatment strategies. A multicenter prospective study evaluated the feasibility of detecting circulating tumor DNA (ctDNA) in cerebrospinal fluid (CSF) and plasma, revealing that CSF serves as a reliable reservoir for ctDNA analyses, which can enhance mutational analysis in glioma patients (ref: Cabezas-Camarero doi.org/10.1016/j.annonc.2025.02.005/). Furthermore, a study on IDH-mutant astrocytomas with a primitive neuronal component demonstrated a distinct methylation profile, correlating with a higher risk of leptomeningeal spread, emphasizing the need for tailored treatment approaches based on molecular characteristics (ref: Hinz doi.org/10.1007/s00401-025-02849-8/). The heterogeneity of WHO grade 4 gliomas was further unraveled through clinical, imaging, and molecular characterization, highlighting the importance of integrating these factors for better prognostic predictions (ref: Jiang doi.org/10.1007/s12672-025-01811-0/). Studies have also shown that intratumor heterogeneity can be assessed using advanced imaging techniques, which may aid in preoperative predictions of IDH genotypes and prognosis (ref: Wang doi.org/10.1186/s40644-025-00829-5/). Overall, these findings underscore the critical role of molecular profiling in understanding the biological behavior of IDH-mutant gliomas and improving patient outcomes through personalized medicine.