The TGFBR1i blocks TGFβ‐induced intracellular signaling, which also activates the pro‐fibrotic p38 Mitogen Activated Protein Kinase (MAPK) signaling pathway.[32] We previously found that the MAPK pathway was activated in MyoF in microHOs and in cirrhotic human liver,[12] and these results confirm that its activation is essential for TGFβ‐induced liver fibrosis. The gene discussed is TGFB1; the disease is Hepatic fibrosis.