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How is Mowat-Wilson syndrome diagnosed?

See how Mowat-Wilson syndrome is diagnosed. Which specialists are essential to meet, what tests are needed and other useful information for the diagnosis of Mowat-Wilson syndrome

Mowat-Wilson syndrome diagnosis

Mowat-Wilson syndrome is a rare genetic disorder that affects various systems of the body. It is characterized by distinct facial features, intellectual disability, and multiple congenital anomalies. Diagnosing Mowat-Wilson syndrome involves a combination of clinical evaluation, genetic testing, and imaging studies.



Clinical Evaluation


The first step in diagnosing Mowat-Wilson syndrome is a thorough clinical evaluation by a healthcare professional. This typically involves a detailed medical history review, physical examination, and assessment of developmental milestones. The healthcare provider will look for specific features commonly associated with Mowat-Wilson syndrome, including:



  • Facial features: Individuals with Mowat-Wilson syndrome often have a broad nasal bridge, deep-set eyes, a prominent chin, and a wide mouth with a prominent upper lip.

  • Intellectual disability: Most individuals with Mowat-Wilson syndrome have some degree of intellectual disability, ranging from mild to severe.

  • Developmental delays: Delayed development is common, particularly in motor skills such as sitting, crawling, and walking.

  • Seizures: Epileptic seizures are frequently observed in individuals with Mowat-Wilson syndrome.

  • Other congenital anomalies: Various structural abnormalities may be present, such as heart defects, Hirschsprung disease (a condition affecting the large intestine), genitourinary anomalies, and skeletal abnormalities.



Genetic Testing


Genetic testing plays a crucial role in confirming the diagnosis of Mowat-Wilson syndrome. The syndrome is primarily caused by mutations in the ZEB2 gene, located on chromosome 2. Different types of genetic tests can be employed:



  • Sanger sequencing: This method involves sequencing specific regions of the ZEB2 gene to identify mutations. It is particularly useful for detecting point mutations or small insertions/deletions.

  • Next-generation sequencing (NGS): NGS techniques, such as targeted gene panel sequencing or whole exome sequencing, can be used to analyze multiple genes simultaneously. These tests are more comprehensive and can identify mutations in other genes associated with similar clinical features.

  • Chromosomal microarray analysis: This test examines the entire genome for copy number variations (CNVs) that may contribute to the development of Mowat-Wilson syndrome. It can detect larger deletions or duplications involving the ZEB2 gene or other chromosomal regions.



Imaging Studies


Imaging studies are often performed to assess the structural abnormalities commonly associated with Mowat-Wilson syndrome. These may include:



  • Echocardiogram: This ultrasound-based test evaluates the structure and function of the heart, helping to identify any cardiac defects.

  • Abdominal ultrasound: This imaging technique can detect abnormalities in the genitourinary system or other abdominal organs.

  • X-rays: X-rays may be used to assess skeletal abnormalities, such as spinal anomalies or abnormalities in the hands and feet.

  • Magnetic resonance imaging (MRI): MRI scans can provide detailed images of the brain and spinal cord, helping to identify any structural abnormalities or brain malformations.



Conclusion


In summary, diagnosing Mowat-Wilson syndrome involves a combination of clinical evaluation, genetic testing, and imaging studies. The clinical evaluation focuses on identifying characteristic facial features, intellectual disability, developmental delays, seizures, and other congenital anomalies. Genetic testing, including Sanger sequencing, NGS techniques, and chromosomal microarray analysis, is used to detect mutations in the ZEB2 gene or other relevant genes. Imaging studies, such as echocardiograms, abdominal ultrasounds, X-rays, and MRIs, help assess structural abnormalities in various body systems. A comprehensive diagnostic approach is essential to confirm the presence of Mowat-Wilson syndrome and guide appropriate management and support for affected individuals and their families.


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2 answers
mowat wilson syndrome zeb2 adlı bir test sonucu teşhis edilir.

Posted Feb 7, 2018 by TUNÇ ALTIPARMAK 4620

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