| Phenotype details |
normal initial cognitive development; normal initial motor development; 6m-increased OFC; 13m-walk; 8y-start motor decline; 8y-loss unsupported walking; 12y-full wheelchair dependency; 14y-start cognitive decline; no behavioural problems; 14y-depression; two single seizures after fall (adulthood); no status epilepticus; OFC 61.5 cm (>+2SD); clumsiness; spasticity of arms; spasticity of legs; gait/truncal ataxia; appendicular ataxia; no dystonia; rigidity; dysarthria; no dysphagia; mild cognitive deficit; no autistic features |