Cardiomyopathy: DCM; Metabolic myopathies: GSD II, GSD III, GSD V, CPT II deficiency, MELAS; Congenital Myopathy: MTM1-associated myopathy, CCD, MmD, Nemaline myopathy, CNM; Idiopathic inflammatory myopathies: DM, PM, IBM, IMNM; Myofibrillar myopathies: MFM1–MFM6; Distal Myopathy: Welander distal myopathy, Tibial (Udd) myopathy, GNE, MMD2; Muscular Dystrophy: DMD, DM1, FSHD, EDMD. The gene discussed is MMD2; the disease is distal myopathy, Welander type.