Orofaciodigital syndrome type 3

Orofaciodigital syndrome type 3 (OFD3), also known as Sugarman syndrome, is an extremely rare genetic disorder characterized by abnormalities of the mouth (oral), face (facial), and fingers and toes (digital). This condition was first described by Sugarman and colleagues in 1971. Key clinical features include abnormalities of the teeth (such as supernumerary or malpositioned teeth), lobulated tongue or tongue hamartomas, cleft lip and/or palate, and digital anomalies including postaxial polydactyly and clinodactyly. Facial features may include a broad nasal root and other midface abnormalities. A distinguishing feature of OFD3 compared to other orofaciodigital syndromes is the association with significant intellectual disability and characteristic eye findings including myopia. Skeletal abnormalities may also be present. OFD3 affects multiple body systems including the craniofacial structures, the central nervous system, the skeletal system, and the eyes. The condition is apparent at birth or early infancy due to the visible oral, facial, and digital malformations. There is no specific cure or targeted therapy for OFD3. Management is supportive and symptomatic, typically involving a multidisciplinary team including oral and maxillofacial surgeons, orthopedic specialists, ophthalmologists, and developmental specialists. Surgical correction of cleft lip/palate, dental anomalies, and polydactyly may be performed as needed. Early intervention programs and educational support are important for addressing intellectual disability. Due to the extreme rarity of this condition, with only a handful of reported cases in the medical literature, knowledge about the full clinical spectrum and long-term prognosis remains limited.

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