Mowat–Wilson syndrome

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Mowat–Wilson syndrome
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Synonyms	Hirschsprung disease-mental retardation syndrome
Pronounce
Specialty	Medical genetics
Symptoms	Intellectual disability, distinctive facial features, Hirschsprung's disease, seizures
Complications	N/A
Onset	Congenital
Duration	Lifelong
Types	N/A
Causes	Genetic mutation in the ZEB2 gene
Risks
Diagnosis	Genetic testing, clinical evaluation
Differential diagnosis	Angelman syndrome, Pitt-Hopkins syndrome, Rett syndrome
Prevention
Treatment	Symptomatic treatment, surgery for Hirschsprung's disease
Medication	Anticonvulsants for seizures
Prognosis	Variable, depends on severity of symptoms
Frequency	Estimated 1 in 50,000 to 1 in 70,000
Deaths

Mowat–Wilson syndrome is a rare genetic disorder characterized by distinctive facial features, intellectual disability, and various congenital anomalies. It is caused by mutations in the ZEB2 gene, which plays a crucial role in the development of multiple body systems.

Signs and Symptoms

Individuals with Mowat–Wilson syndrome typically present with a range of clinical features, including:

• Distinctive facial features such as a broad nasal bridge, deep-set eyes, and a prominent chin.
• Intellectual disability, which can vary from moderate to severe.
• Congenital heart defects, such as atrial septal defect and ventricular septal defect.
• Hirschsprung disease, a condition affecting the large intestine and causing severe constipation or intestinal obstruction.
• Genitourinary anomalies, including hypospadias in males and abnormalities of the uterus and kidneys.
• Seizures and other neurological issues.
• Growth retardation and feeding difficulties in infancy.

Genetics

Mowat–Wilson syndrome is caused by mutations in the ZEB2 gene, located on chromosome 2q22.3. The ZEB2 gene encodes a zinc finger E-box-binding homeobox 2 protein, which is essential for the proper development of various tissues and organs. Most cases of Mowat–Wilson syndrome occur due to de novo mutations, meaning they are not inherited from the parents.

Diagnosis

The diagnosis of Mowat–Wilson syndrome is based on clinical evaluation, identification of characteristic features, and genetic testing to confirm mutations in the ZEB2 gene. Prenatal diagnosis may be possible if there is a known family history of the disorder.

Management

There is no cure for Mowat–Wilson syndrome, and treatment is primarily supportive and symptomatic. Management strategies may include:

• Surgical correction of congenital heart defects and Hirschsprung disease.
• Early intervention programs and special education to address intellectual disability.
• Antiepileptic medications to control seizures.
• Regular monitoring and management of other associated health issues.

Prognosis

The prognosis for individuals with Mowat–Wilson syndrome varies depending on the severity of symptoms and associated health conditions. With appropriate medical care and support, many individuals can lead fulfilling lives, although they may require lifelong assistance.

See also

• Genetic disorder
• Intellectual disability
• Congenital heart defect
• Hirschsprung disease
• ZEB2

External Links

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