TGFB1 and pulmonary fibrosis: Given the crucial role of TGF-β1 in pulmonary fibrosis, including its involvement in EMT, fibroblast-to-myofibroblast transition (FMT), ECM deposition, and myofibroblast activation, we aimed to investigate the relationship between CSF3 and TGF-β1 in IPF pathogenesis.