About Thrombocytopenia-Absent Radius Syndrome

What is Thrombocytopenia-Absent Radius Syndrome?

Thrombocytopenia-Absent Radius Syndrome (TAR Syndrome) is a rare genetic disorder characterized by low platelet counts (thrombocytopenia) and the absence of the radius bone in the forearm. It is caused by a mutation in the gene that codes for the transcription factor gene SF3B4. Symptoms of TAR Syndrome include low platelet counts, absent radius, short stature, and skeletal abnormalities. Treatment typically involves platelet transfusions and bone marrow transplants.

What are the symptoms of Thrombocytopenia-Absent Radius Syndrome?

The symptoms of Thrombocytopenia-Absent Radius Syndrome (TAR Syndrome) include:

-Thrombocytopenia (low platelet count)
-Absent radius (absence of the radius bone in the forearm)
-Short stature
-Cleft palate
-Craniosynostosis (premature fusion of the skull bones)
-Facial dysmorphism (abnormal facial features)
-Cardiac defects
-Hearing loss
-Developmental delay
-Intellectual disability
-Seizures
-Kidney abnormalities
-Gastrointestinal problems
-Urogenital abnormalities
-Hypotonia (low muscle tone)
-Joint contractures (Stiffness of the joints)
-Skin abnormalities

What are the causes of Thrombocytopenia-Absent Radius Syndrome?

Thrombocytopenia-Absent Radius Syndrome (TAR Syndrome) is a rare genetic disorder caused by a mutation in the RBM8A gene. This gene is responsible for the production of a protein that helps regulate the development of blood cells. The mutation in this gene results in a decrease in the production of platelets, which are necessary for normal blood clotting. It also causes the absence of the radius bone in the forearm. The exact cause of the mutation is unknown, but it is believed to be inherited in an autosomal recessive pattern.

What are the treatments for Thrombocytopenia-Absent Radius Syndrome?

The treatments for Thrombocytopenia-Absent Radius Syndrome (TAR Syndrome) vary depending on the individual and the severity of the condition. Generally, treatment focuses on managing the symptoms and complications associated with the condition. This may include physical therapy, occupational therapy, splinting, and/or surgery to correct any skeletal deformities. Additionally, medications may be prescribed to help manage pain, reduce inflammation, and/or prevent infection. In some cases, a bone marrow transplant may be recommended to help restore the body’s ability to produce platelets.

What are the risk factors for Thrombocytopenia-Absent Radius Syndrome?

1. Genetic mutation: Thrombocytopenia-Absent Radius Syndrome is caused by a genetic mutation in the RBM8A gene.

2. Family history: Individuals with a family history of Thrombocytopenia-Absent Radius Syndrome are at an increased risk of developing the condition.

3. Gender: Thrombocytopenia-Absent Radius Syndrome is more common in males than females.

4. Age: The condition is more likely to occur in infants and young children.

Is there a cure/medications for Thrombocytopenia-Absent Radius Syndrome?

Unfortunately, there is no cure for Thrombocytopenia-Absent Radius Syndrome. However, there are medications that can help manage the symptoms. These include corticosteroids, immunoglobulins, and platelet transfusions. Additionally, physical and occupational therapy can help improve mobility and function.