FGF9 and pulmonary fibrosis: Of note, it was recently described that FGFR3 inhibition reduced lung fibrosis markers in isolated lung fibroblasts mediated by TGF‐β and in the bleomycin lung fibrosis model FGFR3 inhibitors reduced fibrosis in vivo37 and its ligand FGF9 is found in hepatic stellate cells of the fibrotic liver.38