ANGPT2 and idiopathic pulmonary fibrosis: Among patients with IPF, Ang2 concentrations at 6 hours were significantly higher in cases compared to controls (4578 pg/ml vs. 3218 pg/ml, p = 0.01) with borderline significance at 24 hours (7115 pg/ml vs. 5046 pg/ml, p = 0.06).