| Phenotype details |
mildly delayed initial cognitive development; mildly delayed initial motor development; 7m-increased OFC; 3y-walk; 4y-start motor decline; 5y-loss unsupported walking; 6y-full wheelchair dependency; 15y-start cognitive decline; no behavioural problems; no history psychiatric diagnoses; 14y-occasional generalized seizures; OFC 62 cm (>+2SD); clumsiness; spasticity of arms; spasticity of legs; gait/truncal ataxia; appendicular ataxia; dystonia; dysarthria; dysphagia; mild cognitive deficit; no autistic features |