GPT and limb-girdle muscular dystrophy: For ALT, AST, and LDH levels, patients with DMD had higher serum concentrations than patients with BMD, FSHD, LGMD, and EDMD (p < 0.05), and patients with BMD had higher serum concentrations than patients with FSHD, LGMD, and EDMD (p < 0.05).