Mondo Description Oral-facial-digital syndrome type 1 (OFD1) is a rare neurodevelopmental disorder in the ciliopathy group that is lethal in males and characterized by variable anomalies including external malformations (craniofacial and digital), and possible involvement of the central nervous system (CNS) and of viscera (kidneys, pancreas and ovaries) in females.

Uniprot Description A form of orofaciodigital syndrome, a group of heterogeneous disorders characterized by abnormalities in the oral cavity, face, and digits and associated phenotypic abnormalities that lead to the delineation of various subtypes. OFD1 is X-linked dominant syndrome, lethal in males. Craniofacial findings consist of facial asymmetry, hypertelorism, median cleft, or pseudocleft of the upper lip, hypoplasia of the alae nasi, oral clefts and abnormal frenulea, tongue anomalies (clefting, cysts, hamartoma), and anomalous dentition involving missing or extra teeth. Asymmetric brachydactyly and/or syndactyly of the fingers and toes occur frequently. Approximately 50% of OFD1 females have some degree of intellectual disability. Some patients have structural central nervous system anomalies such as agenesis of the corpus callosum, cerebellar agenesis, or a Dandy-Walker malformation. Patients with OFD1 can develop fibrocystic disease of the liver and pancreas, in addition to polycystic kidneys.

Disease Ontology Description An orofaciodigital syndrome that is characterized by malformations of the face, oral cavity, and digits, has_material_basis_in X-linked dominant inheritance of the OFD1 gene with lethality in males and is associated with polycystic kidney disease.