| Phenotype details |
5y-walks few steps; no speech; comprehension severely limited; no regression; severe DD or ID; 4m-onset seizures (complex partial, generalized tonic clonic); no MRI anomalies; truncal hypotonia; hypertonia limbs; paroxysmal, dystonic-athetoid attacks; no stereotypies; behavioral anomalies; dolichocephaly, wide-spaced teeth; hyperreflexia, mild oculomotor apraxia, insomnia, constipation |