At the end of the measurements, after 5 weeks without JDP2 overexpression, there were no obvious differences in ECG recordings compared to WT animals (Figure 2), and the average duration of AF within the 30 min recording time declined to 42 ± 68 s (n.s. versus WT, Fisher’s exact test) (Figure 3B). This evidence concerns the gene JDP2 and atrial fibrillation.