['Mutations in LMNA gene cause cardiomyopathy, for which mechanistic insights are lacking.', 'Dusp4 expression is enhanced in hearts with LMNA cardiomyopathy, and its overexpression in mice causes it by activating AKT-mTOR signaling that impairs autophagy.'] Does dual specificity phosphatase 4 mediate cardiomyopathy caused by lamin A/C ( LMNA ) gene mutation?