Interestingly, increased Cu concentrations in the bronchoalveolar lavage fluid (BALF) of IPF patients have been reported,30 with Cu‐dependent enzymes like Lysyl Oxidase‐Like 2 (LOXL2) implicated in the pathogenesis of pulmonary fibrosis.31 Here, LOXL2 is linked to idiopathic pulmonary fibrosis.