These are variable and include autism spectrum disorders, intellectual disability, dysmorphic features and hypotonia.
Helsmoortel-Van der Aa syndrome
Cruveilhier–Baumgarten disease
Van Wyk and Grumbach syndrome
Ruijs-Aalfs syndrome
Van Den Bosch syndrome
Van der Woude syndrome
Fryns-Aftimos syndrome
Nezelof syndrome