| Phenotype details |
see paper; ..., no abnormalities during pregnancy; normal delivery; birth 38w+5; profound intellectual disability; developmental delay; motor delay, unable to rolling-over; speech delay, babbling only; dysarthria, babbling only; epilepsy, tonic seizures, focal impaired awareness seizures; EEG abnormal; hypotonia; no spasticity; ataxia, unable to rolling-over; hand clapping, fingersucking; no sleep disturbances; 3m-MRI brain normal, 3y-slight atrophy; no regression; thick eyebrows, thick lips; no dental/oral abnormalities; drooling, dysphagia; no hearing abnormalities; no vision abnormalities; no cardiac abnormalities; no skeletal abnormalities, no limb abnormalities; no hypermobility joints; no gastrointestinal abnormalities; no urogenital abnormalities; no endocrine/metabolic abnormalities; no immunological abnormalities; normal skin, normal hair, normal nails; no neoplasms; normal serum alkaline phosphatase levels |