| Phenotype details |
see paper; ..., no developmental delay; ataxia; dysarthria; no eye movements; no upper limb weakness; no lower limb weakness; no spasticity; no extensor planter reflex; normal deep tendon reflex; no ankle clonus; cerebellar cognitive and affective syndrome; no bladder dysfunction; no amyotrophy; MRI brain cerebellar atrophy; disease progression slow |