“…[1][2][3][4][5][6] The diagnosis is based on the presence of characteristic craniofacial features (open mouth with prominent central incisors, short philtrum, prominent nasal bridge, high narrow palate, and downslanting of the lid fissures), hypotonia, narrow hands and feet, delayed developmental milestones, microcephaly, retinal dystrophy, and mid-childhood onset truncal obesity. Patients with this condition have a sociable, positive, and cheerful disposition.…”