IDH1 and glioma: To further detecting B7H3 and VEGFA expression levels in human glioma specimens, we randomly picked out 9 of 2-HGhigh, 8 of 2-HGlow, and 4 IDH1-WT glioma samples (Figure 5C) to conduct IHC staining for B7H3 and VEGFA (Figure 5D).