| Phenotype details |
febrile convulsion at infant; no speech; cognitive dysfunction during childhood; developmental delay, intellectual disability; wheelchair bound; cognitive dysfunction; 34y-Parkinsonism, rigidity, tremor; postural abnormality; no dystonia; no increasing deep tendon reflex; appearances of pathologic reflex; progressive dementia during adulthood; no psychiatric symptoms; no epileptic seizure; good Levodopa responsive; no Levodopa-induced dyskinesia; no RETT-like features; no sleep problems; no ocular defects; MRI brain T2 hypointense substantia nigra and globus pallidus (high iron), T1 hyperintense ‘halo’ in midbrain, no eye-of-the-tiger sign, no white matter involvement, diffuse cerebral atrophy, no cerebellar atrophy |