Keywords: αvβ6; α-v-β-6 integrin; CTGF; connective tissue growth factor; HRCT; high-resolution CT; IPF; idiopathic pulmonary fibrosis; LOXL2; Lysl oxidase like 2; LPA; lysophosphotidic acid; TGF-β; transforming growth factor-β; TH2; type 2 T helper cell;