PRKN and pulmonary fibrosis: It is well known that PTEN induced kinase 1 (PINK1) and Parkin are essential for the maintenance of mitochondrial quality through mitophagy activation, and PINK1/Parkin-dependent mitophagy has been identified as a potential target for the treatment of pulmonary fibrosis (Bueno et al. 2015; Liu et al. 2020).