| Phenotype details |
difficulty running, difficulty jumping; no delayed walking (-HP:0031936); 10y-loss ambulation (HP:0002505); gastrocnemius hypertrophy; tendon contractures (HP:0001771); no myalgia (-HP:0003326), no muscle spasm (-HP:0003394); creatine kinase 17304 IU/l; echocardiology normal; muscle biopsy biceps brachii dystrophic |