<unk>  has a poor prognosis. Most children with<unk>  reach a maximum mobility at sitting upright and sliding. Due to the compounded effects of continually worsening heart problems, impaired mental development, problems swallowing and additional complications, children with<unk>  rarely live through adolescence, the disorder proves fatal by age 20.
Fukuyama congenital muscular dystrophy
Ullrich congenital muscular dystrophy
Jokela type spinal muscular atrophy
Becker muscular dystrophy
X-linked spinal muscular atrophy type 2
Madras motor neuron disease
Distal spinal muscular atrophy type 2
Emery–Dreifuss muscular dystrophy