SLC25A4 and cardiomyopathy: Mutations in SLC25A4 are associated with different mitochondrial disorders including phenotypes of mitochondrial myopathy, exercise intolerance, cardiomyopathy, and progressive external ophtalmoplegia (Kaukonen et al 2000; Strauss et al 2013; Thompson et al 2016; Tosserams et al 2017).