| Phenotype details |
encephalopathy, paroxysmal ataxia, hypotonia, tremor, dystonia, spasticity, ophtalmoplegia, dysarthria, dysphagia, seizures; neuroimaging abnormalities: caudate, putamen, thalamus, corticosubcortical, cerebellum, brainstem, periqueductal, spinal cord, lactate on MRS |