CXCL10 and idiopathic pulmonary fibrosis: Consistent with data from mouse studies, Nakayama and colleagues [16] found significantly elevated IP10 levels in BALF and elevated serum levels of epithelial-derived neutrophil-activating protein 78 (ENA-78; also termed CXCL5) in patients with nonspecific interstitial pneumonia compared to patients with IPF and controls.