KLF5 and ventricular tachycardia: The results showed that the transplantation of KLF5-BMSCs led to a significant reduction in the occurrence time of PVCs, VB, (VT1), and ventricular tachycardia (VT2) (Table 3), and its score was significantly lower than that of MI mice and NC-BMSCs transplantation mice (Table 4).