To further interrogate the role of SPDL1 in the aetiology of IPF, we leveraged a publicly available transcriptomic dataset that includes microarray data derived from lung tissue of 122 patients with IPF, 145 patients with chronic obstructive pulmonary disease (COPD), and 91 controls (GSE47460, GPL14550)15. This evidence concerns the gene SPDL1 and chronic obstructive pulmonary disease.