| Phenotype details |
see paper; ..., no intra-uterine growth retardation; no short stature; no microcephaly; severe global developmental delay; 6y-walk; no speech; intellectual disability; no behavioral issues; hypotonia; seizures; MRI brain abnormal, genralised atrophy of white matter with marked ventricular dilatation, small optic chiasm, delayed visual maturation of optic nerve |