To determine the expression of AURKB in the lungs of IPF, we immunostained lung sections with antibody against AURKB and observed a marked increase in AURKB staining in spindle‐shaped fibroblasts located in subpleural regions and fibrotic foci of IPF lung tissue compared to normal lungs (Fig 1C). This evidence concerns the gene AURKB and idiopathic pulmonary fibrosis.