TTN and ischemic cardiomyopathy: Moreover, from the RNA‐seq data of human dilated and ischemic cardiomyopathy, the expression of Tnnt2 and Ttn was significantly negatively correlated with Actr5 expression (r = −0.3369, P = 0.0065 between Tnnt2 and Actr5; r = −0.3847, P = 0.0017 between Ttn and Actr5) (Fig. 8G).