In GBM, TGFβ is an oncogenic factor, being able to induce proliferation in GSCs, indirectly by inducing the action of PDGFB, to determine self‐renewal, by further upregulating a second cytokine, LIF, and by also promoting tumour cell migration, among other functions [18, 23, 41]. The gene discussed is TGFB1; the disease is glioblastoma.