Otofaciocervical syndrome

Otofaciocervical syndrome (OFCS) is a rare congenital disorder characterized by a distinctive combination of ear (oto), facial, and neck (cervical) anomalies. The condition primarily affects craniofacial structures, the musculoskeletal system, and hearing. Key clinical features include low-set, cup-shaped or prominent ears with preauricular fistulae or pits, hearing loss (typically sensorineural or mixed), a long face with narrow nose, facial asymmetry, high arched palate, and dental anomalies. Cervical findings include a long neck, sloping shoulders, low posterior hairline, and winged or hypoplastic scapulae, giving a distinctive shoulder appearance. Patients may also present with mild intellectual disability, short stature, and preauricular tags. Some individuals have branchial cysts or fistulae reminiscent of branchio-oto-renal spectrum disorders, though the conditions are genetically distinct. Two genetic forms have been identified. OFCS type 1 (OFCS1) is caused by heterozygous mutations in the EYA1 gene and follows autosomal dominant inheritance. OFCS type 2 (OFCS2) is caused by biallelic mutations in the PAX1 gene and follows autosomal recessive inheritance. PAX1 mutations are associated with a more severe phenotype that may include vertebral anomalies and immune deficiency due to thymic hypoplasia. There is no cure for otofaciocervical syndrome, and management is supportive and symptom-directed. Treatment may include hearing aids or cochlear implants for hearing loss, speech therapy, orthodontic or surgical correction of craniofacial anomalies, and orthopedic management for skeletal issues. Regular audiological monitoring and developmental assessments are recommended. Genetic counseling is important for affected families given the different inheritance patterns associated with each subtype.

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