In glioma, PDGFB and its cognate receptor, PDGFRA, are detected in mIDH tumors (Fig. S1c), whereas, in the non-tumor human brain, PDGFB is minimally expressed by microglia and vascular cells, and PDGFRA is highly expressed by OPCs (Figs. S1d). Here, PDGFRA is linked to glioma.