Kaufman oculocerebrofacial syndrome

autorecessive

Kaufman oculocerebrofacial syndrome (KOS) is a rare genetic disorder characterized by a combination of ocular, cerebral, and facial anomalies. It is inherited in an autosomal recessive manner and is caused by mutations in the UBE3B gene.

Signs and Symptoms

Individuals with Kaufman oculocerebrofacial syndrome typically present with a range of symptoms, including:

• Microcephaly (small head size)
• Intellectual disability
• Seizures
• Hypotonia (reduced muscle tone)
• Distinctive facial features such as a broad nasal bridge, epicanthal folds, and a high-arched palate
• Ocular abnormalities such as strabismus, nystagmus, and optic atrophy
• Growth retardation

Genetics

Kaufman oculocerebrofacial syndrome is caused by mutations in the UBE3B gene, which is located on chromosome 12. The UBE3B gene encodes a protein that is involved in the ubiquitin-proteasome system, which is crucial for the degradation of misfolded or damaged proteins.

Diagnosis

The diagnosis of Kaufman oculocerebrofacial syndrome is based on clinical findings and can be confirmed by genetic testing to identify mutations in the UBE3B gene. Prenatal diagnosis may be available for families with a known mutation.

Management

There is no cure for Kaufman oculocerebrofacial syndrome, and treatment is primarily supportive. Management may include:

• Physical therapy to improve muscle tone and motor skills
• Occupational therapy to assist with daily living activities
• Speech therapy to address communication difficulties
• Anticonvulsant medications to control seizures
• Regular monitoring by a multidisciplinary team including neurologists, ophthalmologists, and geneticists

Prognosis

The prognosis for individuals with Kaufman oculocerebrofacial syndrome varies depending on the severity of symptoms. Early intervention and supportive care can improve the quality of life for affected individuals.

Related Pages

• Genetic disorder
• Microcephaly
• Intellectual disability
• Seizures
• Hypotonia
• Strabismus
• Nystagmus
• Optic atrophy
• Ubiquitin-proteasome system