Uniprot Description An autosomal dominant syndrome characterized by developmental delay, hypotonia, behavioral problems, eye abnormalities, constipation, feeding difficulties, seizures and sleep problems. Patients exhibit dysmorphic features, including broad/prominent forehead, synophrys and/or bushy eyebrows, depressed nasal bridge and bulbous nasal tip. Additional variable features are posteriorly rotated ears, hirsutism, deep-set eyes, thin upper lip, inverted nipples, hearing loss and branchial cleft anomalies.