FGF23 and atrial fibrillation: Atrial myocytes in each group were electrically stimulated under the current clamp mode, and a higher incidence of triggering activity was observed in FGF23 overexpression of NMAMs than in the vector, which may result in the occurrence of AF (FGF23‐OE 65% (13/20) vs. Vector 30% (6/20), n = 20/6 ~ 10 cell/neonatal mice, p < 0.05) (Figure 3A).