IL1A and neoplasm: Biffi et al. [34] found that PDAC cells could secrete IL1α to activate PSCs and promote the formation of iCAFs by activating the IL1/JAK/STAT signaling pathway, and tumor cells could also increase the expression of inflammatory cytokines and chemokines like IL1a, IL6, and LIF in iCAFs, which promoted cancer progression and formed an immunosuppressive microenvironment.