Andermann syndrome

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Andermann syndrome
Synonyms	Agenesis of the corpus callosum with peripheral neuropathy
Pronounce
Specialty	Neurology, Genetics
Symptoms	Hypotonia, areflexia, developmental delay, intellectual disability, seizures, dysarthria, scoliosis, peripheral neuropathy
Complications	N/A
Onset	Infancy
Duration	Lifelong
Types	N/A
Causes	Mutations in the SLC12A6 gene
Risks
Diagnosis	Genetic testing, MRI
Differential diagnosis	Charcot-Marie-Tooth disease, Friedreich's ataxia
Prevention	Genetic counseling
Treatment	Supportive care, physical therapy, occupational therapy, speech therapy
Medication
Prognosis	Progressive neurological decline
Frequency	Rare
Deaths

Andermann syndrome, also known as agenesis of corpus callosum with peripheral neuropathy, is a rare genetic disorder characterized by the absence or malformation of the corpus callosum and peripheral neuropathy. This condition is primarily caused by mutations in the SLC12A6 gene, which is responsible for encoding a protein involved in the transport of ions across cell membranes.

Signs and Symptoms

Individuals with Andermann syndrome typically present with a range of neurological symptoms, including:

• Developmental delay
• Intellectual disability
• Seizures
• Hypotonia (reduced muscle tone)
• Peripheral neuropathy, which may lead to muscle weakness and sensory loss

Causes

Andermann syndrome is caused by mutations in the SLC12A6 gene, which is located on chromosome 15. This gene is responsible for the production of a protein that plays a crucial role in the function of the nervous system. The disorder is inherited in an autosomal recessive manner, meaning that an affected individual must inherit two copies of the mutated gene, one from each parent.

Diagnosis

Diagnosis of Andermann syndrome is typically based on clinical evaluation, genetic testing, and neuroimaging studies such as MRI to assess the structure of the brain.

Treatment

There is currently no cure for Andermann syndrome, and treatment is primarily supportive. Management strategies may include:

• Physical therapy to improve motor skills
• Occupational therapy to assist with daily activities
• Seizure management with anticonvulsant medications

Prognosis

The prognosis for individuals with Andermann syndrome varies depending on the severity of symptoms. Some individuals may have a relatively stable condition, while others may experience progressive neurological decline.

Epidemiology

Andermann syndrome is a rare disorder, with a higher prevalence reported in certain populations, such as the French-Canadian population in the Saguenay–Lac-Saint-Jean region of Quebec, Canada.

See Also

• Corpus callosum
• Peripheral neuropathy
• Genetic disorders

References

• Example Reference 1
• Example Reference 2

External Links

• National Institutes of Health - Andermann Syndrome