| Phenotype details |
see paper; ..., age onset teenage; moderate intellectual disability; no neurological features in infancy; normal hearing; normal vision; brisk reflexes, increased peripheral tone; delayed speech, speaks in short phases, articulation disorder; hyperactivity; severe anxiety (can become catatonic) treated with escitalopram; 13m-onset seizures, atypical tonic clonic seizures associated with fevers; CT brain childhood-normal; weight 50th centile; height 75th centile; OFC 10th centile; broad mouth, short philtrum, mild micrognathia.; no gastrointestinal symptoms |