DMD and cardiomyopathy: Women who are carriers of the DMD gene are largely asymptomatic with regard to skeletal muscle symptoms, but are susceptible to cardiomyopathy (Childers and Klaiman, 2017; Viggiano et al., 2017; Florian et al., 2018; Ishizaki et al., 2018; Zhong et al., 2019).