Peroxisome proliferator-activated receptor gamma signaling activation by rosiglitazone has been identified to antagonize Tgfβ1 activity in IPF patients and as a result decreased fibrosis formation in bleomycin-treated mice was reported (Genovese et al., 2005; El Agha et al., 2017). Here, TGFB1 is linked to idiopathic pulmonary fibrosis.