| Phenotype details |
see paper; ..., slowly progressive cerebellar atrophy; 5m-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 two-word sentences; 1y4m-head control; 4y2m-sit; 3y7m-stand with support; no walk; MRI brain atrophy (superior dominant), vermis anterior dominant, brainstem atrophy pontine tegmentum, normal cerebrum; no deterioration |