Mondo Description Acromelic frontonasal dysplasia (AFND) is a rare variant of frontonasal dysplasia characterized by distinct craniofacial (large fontanelle, hypertelorism, bifid nasal tip, nasal clefting, brachycephaly, median cleft face, carp-shaped mouth), brain (interhemispheric lipoma, agenesis of the corpus callosum), and limb (tibial hypoplasia/aplasia, club foot, symmetric preaxial polydactyly of the feet and bilateral clubbed and thickened nails of halluces) malformations as well as intellectual disability. Other manifestations sometimes reported include absent olfactory bulbs, hypopituitarism and cryptorchidism.

Uniprot Description A rare variant form of frontonasal dysplasia, an array of abnormalities affecting the eyes, forehead and nose and linked to midfacial dysraphia. The clinical picture is highly variable. Major findings include true ocular hypertelorism, broadening of the nasal root, median facial cleft affecting the nose and/or upper lip and palate, unilateral or bilateral clefting of the alae nasi, lack of formation of the nasal tip, anterior cranium bifidum occultum, a V-shaped or widow's peak frontal hairline. AFND is characterized by the association of frontonasal malformations with various combinations of polydactyly, tibial hypoplasia, epibulbar dermoid, encephalocoele, corpus callosum agenesis and Dandy-Walker malformation.

Disease Ontology Description A dysostosis characterized by cranium bifidum, severe hypertelorism, median cleft lip and palate, nasal bifurcation, brachycephaly, large fontanelle, tibial hemimelia, preaxial polydactyly of the feet and brain malformations.