A recent study found that Slit2 supplementation and Robot1 downregulation can inhibit excessive ECM deposition induced by TGF‐β1 in RTFs via TGF‐β1/Smad3 pathway, and can attenuate airway fibrosis in a trauma‐induced rat airway obstruction model.136. This evidence concerns the gene TGFB1 and Airway obstruction.