“…However, the higher proliferative activity observed in IL30 conditioned versus control tumors proves that the multiple signaling pathways triggered by the cytokine results, as a whole, in tumor growth and progression. In addition, at least in the triple-negative tumor, IL30 substantially upregulates SHH, which accelerates MDA-MB-231 cell proliferation (42) and is fundamental in the maintenance of a putative cancer stem cell compartment along with MYC, which is also upregulated by IL30 (43,44). Moreover, IL30 downmodulates a set of critical tumor suppressors such as PTEN (18), RARB (19), RASSF1 (20), SLIT2 (21), and particularly TP73 (22), which lead to alterations in the cell-cycle regulation and a defective apoptotic response.…”