It is noteworthy that STMN1 knockout GBM cells did not acquire sensitization to taxanes (Supplementary Fig. 6f), contrary to what has been observed in breast cancer25,26, and DOX treatment does not induce a cellular stress response that accounts for STMN1 dephosphorylation, as PDGFRα inhibition prevents decrease in phospho-STMN1 Ser16 levels (Supplementary Fig. 6g). This evidence concerns the gene PDGFRA and glioblastoma.