ANGPT2 and chronic obstructive pulmonary disease: Among patients with COPD, there was no significant difference in Ang2 level between cases and controls pre-transplant (1895 pg/ml vs. 1824 pg/ml), 6 hours after transplant (3247 pg/ml vs. 2843 pg/ml) or 24 hours after transplant (4944 pg/ml vs. 4412 pg/ml) (p>0.6 for all time points).