In line with previousstudies showing that nintedanib and pirfenidonereduce TGFβ1-induced proliferation of human fibroblasts,7,10 we observed that in our PIC-RGD hydrogel fibrosis model both nintedaniband pirfenidone significantly reduced myofibroblast proliferation(Figure 6C). Here, TGFB1 is linked to fibrosis.