Some limb-girdle muscular dystrophy (LGMD), especially with sarcoglycanopathies (LGMD types 2C, 2D, 2E, 2F) and LGMD type 2I  Some CMD, especially merosin negative types 1A, 1B, 1C  Some myofibrillar myopathies (e.g., hereditary myopathy with early respiratory failure)  Early-onset infantile facioscapulohumeral muscular dystrophy (FSHD)  Early-onset Charcote-Marie-Tooth disease (CMTD) especially with GDAP1 mutation  Some congenital myopathies (e.g., severe recessive type of central core myopathy). The gene discussed is GDAP1; the disease is sarcoglycanopathy.