| Phenotype details |
see paper; ..., height <−5 SDS; feeding difficulties, gastric tube feeding; kyphoscoliosis; developmental delay, normal before regression; speech regression; severe intellectual disability; 10y-seizures, multifocal, prominent in left central region; spasticity; unsteady gait, 21y-wheelchair-bound; no neuropsychiatric manifestations; MRI brain severe cerebral and cerebellar volume loss, ventricle dilation, atrophy of corpus callosum and brainstem, bilateral hippocampal atrophy with increased FLAIR signal |