A total of 190 patients with LGG (115 astrocytoma and 75 oligodendroglioma) and 396 patients with GBM (including 107 identified IDH‐wildtype GBM) from HMU Cancer Hospital and TCIA repository who met the inclusion criteria were enrolled in the study (Figure 2). Here, IDH1 is linked to astrocytoma (excluding glioblastoma).