Moreover, the forced‐expressing Foxo6os reduced cardiomyocyte cross‐sectional area (Figure 2I,J) and attenuated TAC‐induced cardiac fibrosis (Figure 2E,H), while consistently downregulating hypertrophic markers ANP, BNP, and MYH7 (Figure 2K). Here, NPPB is linked to persistent truncus arteriosus.