| Phenotype details |
see paper; ..., profound developmental delay, no speech, 6y-sat independently; 4m-generalized tonic clonic, myoclonic seizures; MRI ventriculomegaly, cortical atrophy, demyelination of periventricular white matter, thin corpus callosum, cerebellar vermian hypoplasia; hypertonia of the limbs; microcephaly; short stature, low weight; no congenital heart defect; optic atrophy, followed light |