| Phenotype details |
see paper; ..., lissencephaly, pachygyria diffuse, posterior gradient more severe than anterior gradient, thick lissencephaly cortical thickness (10-15 mm), hippocampal dysplasia, thin white matter; thin anterior commissure, thin diffuse corpus callosum, normal hippocampal commissure, normal optic chiasm; brain stem thick tectume, severe narrowing of pons, wide pons/medulla, absent base of pons, severe pontine hypoplasia; cerebellum mild vermis hypoplasia, mild hemisphere hypoplasia, foliar dysplasia; birth OFC 31 cm (SD−1); weight 14 kg (SD−3), height 116 cm (SD−1), OFC 47 cm (SD+0.5); global developmental delay; hypotonia; no spasticity; not sitting; not walking; no speech; severe intellectual disability; 3m-onset seizures, myoclonic seizure; no dyskinesia; no vision abnormalities; normal eye movements; no strabismus; no feeding abnormality |