Orofaciodigital syndrome type 14

Orofaciodigital syndrome type 14 (OFD14) is an extremely rare genetic disorder belonging to the orofaciodigital syndrome family, a group of conditions characterized by abnormalities of the mouth (oral cavity), face, and digits (fingers and toes). OFD14 is caused by biallelic mutations in the C2CD3 gene, which plays a critical role in ciliogenesis — the formation and function of cilia, the tiny hair-like structures on cells that are essential for normal development and signaling. As a ciliopathy, this condition can affect multiple organ systems during embryonic development. Key clinical features of OFD14 include oral findings such as cleft palate, tongue abnormalities (including hamartomas or lobulated tongue), and dental anomalies. Facial features may include micrognathia (small jaw) and other craniofacial dysmorphisms. Digital anomalies typically include polydactyly (extra fingers or toes) and brachydactyly. Importantly, OFD14 is also associated with significant cerebral malformations, including cerebellar abnormalities and intellectual disability, reflecting the critical role of cilia in brain development. Some patients may also present with microcephaly. There is currently no cure or disease-specific treatment for OFD14. Management is supportive and symptomatic, involving a multidisciplinary team that may include geneticists, neurologists, craniofacial surgeons, orthopedic specialists, and developmental therapists. Surgical correction of cleft palate, polydactyly, and other structural anomalies may be considered. Early developmental intervention and educational support are important for children with intellectual disability. Given the extreme rarity of this condition, knowledge is based on a very limited number of reported cases in the medical literature.

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