In addition to classic HCM, MYH7 mutations may cause cardiomyopathies with different heart morphology and function, such as dilated cardiomyopathy (DCM) and HCM with features of restrictive cardiomyopathy (RCM) (Bondue et al., 2018; Kubo et al., 2007; Møller et al., 2009). This evidence concerns the gene MYH7 and cardiomyopathy, familial restrictive, 1.