Together, this quantitative PCR analysis suggested that although miRNA species targeting EMT-related mesenchymal markers were decreased in both groups of IPF patients, higher expression of certain of these EMT-associated markers (including CD44, COL1A2, VIM, and FOXC1) was apparent in rapid IPF versus slow IPF. This evidence concerns the gene COL1A2 and idiopathic pulmonary fibrosis.