TUG1 and cardiac hypertrophy: Further, rAAV9‐TUG1 had no effect on heart weight (Figure S3B), cardiac function (Figure S3C‐E) and structure (Figure S3F) of the normal mice, but alleviated cardiac hypertrophy as anticipated, manifested by the decreased ratio of heart weight to body weight and heart size (Figure 5C), reduced cross‐sectional area and cell surface area (Figure 5D), improved LVEF% and decreased diastolic left ventricular posterior thickness (LVPW, d and LVPW, s) (Figure 5E,F and Table S4).