| Phenotype details |
delayed motor milestones, 20m-assisted stand, 4y-walk; progression relatively stable; walk alone; motor delay, able to walk, climb stairs with railings; severe peripheral hypotonia and distal weakness; generalised weakness, ptosis, no neck flexor weakness; absent reflexes; mild scoliosis; generalised muscle wasting; ptosis, ophthalmoplegia with mild limitation of upward gaze; mild dysarthria, nasogastric tube feeding, now GT feeding; no respiratory support; left vocal cord palsy; bilateral coxa valga, generalised osteopenia; bilateral undescended testes status postorchidopexy dysmorphic; microcephaly; high arched palate; developmental delay; gastroesophageal reflux disease, swallowing incoordination; constipation; muscle biopsy upper arm type 1 myofiber predominance and mostly type 2 myofiber atrophy, no grouping of myofiber types |