it has been found only in a handful of families living in the Karelia region of Finland.
Jokela type spinal muscular atrophy
Fukuyama congenital muscular dystrophy
Madras motor neuron disease
X-linked spinal muscular atrophy type 2
Distal spinal muscular atrophy type 2
Distal spinal muscular atrophy type 1
Ullrich congenital muscular dystrophy
Becker muscular dystrophy