* mild to moderate to severe intellectual disability, also called "developmental disability" * short fifth digits with hypoplastic or absent nails * low birth weight * feeding difficulties upon birth * frequent respiratory infections during infancy * hypotonia * joint laxity * delayed bone age * microcephaly * coarse facial features, including wide nose, wide mouth, and thick eyebrows and lashes
Coffin–Siris syndrome
Maroteaux–Lamy syndrome
Dunnigan familial partial lipodystrophy
Beckwith–Wiedemann syndrome
Laurence–Moon syndrome
Griscelli syndrome type 2
Qazi–Markouizos syndrome
Klüver–Bucy syndrome