| 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; mild intellectual disability, speech three-word sentences; 3m-head control; 2y-sit; 3y-stand with support; 6y-walk (unstable); MRI brain atrophy (superior dominant), vermis anterior dominant, brainstem atrophy pontine tegmentum, normal cerebrum; no deterioration |