| Phenotype details |
see paper; ..., moderate developmental delay; delayed speech, severe language delay; self-abusive behavior, severe sleep initiation disorder; no seizures; infantile hypotonia, unsteady wide-based gait; MRI brain normal; OFC 3rd centile, weight 50th-75th centile, length 25th-50th centile; down-sloping palpebral fissures, slightly depressed nasal bridge; hyperextensible joints |