| Phenotype details |
see paper, ..., 12y6m-deceased (pneumonia); 4m-focal seizures; focal seizures with impaired awareness; 9 months on: spasms and focal to bilateral tonic-clonic (daily); 14m-single episode of status epilepticus; EEG 8m–10y slow background, bilateral independent or multifocal discharges, epileptic spasms recorded; MRI brain 5m, 7y thin corpus callosum, multifocal white matter abnormalities, dysmorphic enlarged lateral ventricles, mild cortical and cerebellar atrophy, progressive trabecular bone thickening; global profound developmental delay, wheelchair bound, cortical visual impairment, by 10y knee fixed flexion contractures, dysphagia (percutaneous endoscopic gastrostomy 5y); severe macrocytic anemia transfusion dependent |