| Phenotype details |
see paper; ..., slowly progressive cerebellar atrophy; 1d-nystagmus; ataxia; postural tremor; slurred speech; no dysphagia; general hypotonia; oculomotor apraxia; no pyramidal sign; no extra pyramidal sign; no peripheral neuropathy; no epileptic seizures; moderate intellectual disability, speech two-word sentences; 3m-head control; 2y2m-sit; unable to stand with support; 12y-walks (unstable); MRI brain atrophy (diffuse cortical), vermis anterior dominant, brainstem atrophy pontine tegmentum, normal cerebrum; no deterioration |