CAMK2G and cardiac hypertrophy: In cardiomyocytes, PKA is the well‐established activator in the β‐adrenergic receptor pathway, leading to the phosphorylation of MYBPC3 at specific sites, including Ser273, Ser282, and Ser302.[28] CaMKII is another enzyme that phosphorylates MYBPC3, typically associated with calcium signaling as a player in regulating cardiac function.[48] In this work, we demonstrated that Foxo6os can recruit protein kinase PKC‐α, which in turn mediates phosphorylation of MYBPC3 at the N‐terminal region (Thr289, Ser290, Ser292) during cardiac hypertrophy.