| Phenotype details |
onset 15y with Ataxia & Dysarthria; Difficulty walking; Quadriplegia (Quadriparesis); Loss of ambulation 16y, Decreased muscle mass; Spasticity; Seizures; Dysphagia; Lower limbs stiffness; Mental regression & progressive dementia; Progressive neuropathy; Pes cavus, bilateral; Claw toes; Thoracolumbar spine MRI: mild thoracic cord atrophic changes; EMG-NCV: UMN lesion which involves lower limbs. |