Background: KBG syndrome is caused by haploinsufficiency of and is characterised by macrodontia of upper central incisors, distinctive facial features, short stature, skeletal anomalies, developmental delay, brain malformations and seizures. The central nervous system (CNS) and skeletal features remain poorly defined.
Methods: CNS and/or skeletal imaging were collected from molecularly confirmed individuals with KBG syndrome through an international network.