Phenotype details |
see paper; ..., 3m-seizure; eye deviation to left, tonic opisthotonic posturing, upward gazing; EEG multifocal spikes in fp2, t4, t8, o1 and o2; OFC 33.5 cm (+0.4 SD) at birth, 45.6 cm (+0.8 SD) at 10 month, 49.9 cm (−0.2 SD) at 5y; bedridden; profound intelletucal disability, hypotonia, erratic myoclonus; erratic myoclonus; no ataxia; MRI brain 2y-normal; 9y-progressive cerebellar atrophy |