| Phenotype details |
congenital hypotonia, knee contractures, feeding and respiratory difficulties; axial weakness; moderate generalized atrophy; CK normal; EMG myopathic; 10y-biopsy vastus lateralis, type 1 fiber predominance, occasional internalized nuclei; occasional fibers with areas devoid of oxidative staining; 13y-FVC 0.99; aortic coarctation and VSD s/p surgery; mild ophthalmoplegia, joint hypermobility, premature adrenarche |