| Phenotype details |
2m-onset seizures, generalized epilepsy, epileptic spasms, myoclonic seizures, subclinical seizures, refractory; profound developmental delay, GMFCS V, CFCS V, MiniMACS V; dystonic movement disorder, profound hypotonia, cortical visual impairment; EEG history hypsarrhythmia, multifocal SW, poorly organized background; MRI brain markedly decreased cerebral volume, deficiency of white matter, small brainstem and corpus callosum |