Time-to-event analysis comparing Kaplan–Meier estimates of 90-days transplant-free survival confirmed lower transplant-free 90-days survival (estimate: 33%, standard error: 8%) in patients with AF apoA-II > 45 μg/ml than in patients with AF apoA-II of 45 μg/ml or below (estimate: 66%, standard error: 10%, P = 0.010) (Fig. 3D). Here, APOA2 is linked to atrial fibrillation.