However, we compared the plasma proteome signature from our IPF cohort with a recently published similar signature using the SomaLogics platform with the IPF-PRO registry samples, and identified SPARC, CCL5, CCL17 and CCL22, OLR1 and PDGF-a/B as common biomarkers in both IPF datasets. This evidence concerns the gene OLR1 and idiopathic pulmonary fibrosis.