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A genetic neurodegenerative disease with normal early development followed by childhood onset optic atrophy with progressive vision loss and eventually blindness, followed by progressive neurological decline that typically includes cerebellar ataxia, nystagmus, dorsal column dysfunction (decreased vibration and position sense), spastic paraplegia and finally tetraparesis. There is evidence this disease is caused by homozygous or compound heterozygous mutation in the UCHL1 gene on chromosome 4p13.
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