Besides upregulated genes related to fibrosis (COL1A1, FGFR2, TIMP2, and TGF-β2/3; Figures 2A, C), increased expression of M2-macrophage and inhibition of M1-macrophage related genes were found in IPF samples (Figures 2A, C), similarly to WT mice exposed to BLM (Figure 1B). Here, FGFR2 is linked to idiopathic pulmonary fibrosis.