SERPINB5 and neoplasm: Further studies are warranted on whetherbleomycin would suppress the growth of other PDAC cell lines (both in vitroand in vivo), whether it indeed binds to FN1 and/or Serpin B5, how itregulates the biological functions of these two proteins in both PDAC cells and tumor ECM,and whether it can inhibit DNA synthesis in PDAC.