| Phenotype details |
All three children presented profound developmental delay, severe learning disability, no speech, psychomotor delay, postnatal microcephaly, and high levels of serum ALP. 2 over three had generalized tonic-clonic seizures. All had involuntary midline hand movements, and bruxism. Facial features included apparent hypertelorism, Upslanting palpebral fissures, Broad nasal bridge and nasal tip, short nose, Tented upper-lip vermilion, Large, fleshy ear lobes, cleft lip in 2 over 3, |