PDGFRs have been found to be overexpressed in human malignant astrocytomas [81]; moreover, expression of NG2/CSPG4 and PDGFRα was identified in oligodendrogliomas, pilocytic astrocytomas and, heterogeneously, in GBs [54,82]. Here, CSPG4 is linked to astrocytoma (excluding glioblastoma).