The mean FA stop value was, respectively, 0.22 ± 0.03 vs. 0.19 ± 0.06 for AF, 0.20 ± 0.04 vs. 0.19 ± 0.06 for ILF, 0.17 ± 0.03 vs. 0.15 ± 0.04 for IFOF, and 0.15 ± 0.03 vs. 0.14 ± 0.04 for UF (Figure 2A). The gene discussed is FOXK2; the disease is atrial fibrillation.