HIF1A and pulmonary fibrosis: Molecular and histological analyzes were performed using TGF-β-treated MRC-5 fibroblast cells and a bleomycin-induced rat model of pulmonary fibrosis.<h4>Results</h4>Clinical analysis revealed a dysregulation of the HIF-1α/LSH/SCD1 axis and altered levels of ferroptosis markers in patients.