| Phenotype details |
see paper; ..., slowly progressive cerebellar atrophy; 6m-nystagmus; ataxia; postural tremor; slurred speech; no dysphagia; general hypotonia; no oculomotor apraxia; no pyramidal sign; no extra pyramidal sign; no peripheral neuropathy; no epileptic seizures; mild intellectual disability, speech three-word sentences; 4m-head control; 1y6m-sit; 2y-stand with support; no unassisted walk; MRI brain atrophy (superior dominant), vermis anterior dominant, normal cerebrum; no deterioration |