TNNT2 and cardiac hypertrophy: We treated mice via tail vein injections of AAV9 that mediated HIPK1 knockdown driven by a cardiac‐specific troponin promoter (cTnT‐shHIPK1‐AAV9) or control AAV9 vectors (cTnT‐CTL‐AAV9) and subsequently followed 1 week later by TAC surgery to induce pathological cardiac hypertrophy.