PTGS2 and pulmonary fibrosis: Previous studies have favoured that PTGS2‐ferroptosis‐associated pulmonary fibrosis is through an inflammatory response: Ferroptosis is associated with increased expression of PTGS2, which leads to increased secretion of PGE2, accelerated metabolism of arachidonic acid and release of inflammatory mediators, which activate the inflammatory response and lead to pulmonary fibrosis [62].