| Phenotype details |
intellectual disability (HP:0001249); elevated serum creatine phosphokinase (HP:003236) 258; floppy at birth; cardiomyopathy; no skin change; muscle (1y3m)-weakly necrotic fiber, weakly regenerative fiber, endomysial fibrosis, mitochondrial enlargement; no seizures; inability to walk (HP:0002540) |