Additional studies have implicated monocyte chemotactic protein-3 (MCP-3) and Chemokine (C-X-C motif) ligand 13 (CXCL13) as biomarkers for the pathogenesis of IPF, suggesting their roles in fibroblast recruitment and activation [7,13,14]. The gene discussed is CCL7; the disease is idiopathic pulmonary fibrosis.