About Spinal Muscular Atrophy

What is Spinal Muscular Atrophy?

Spinal Muscular Atrophy (SMA) is a genetic disorder that affects the motor neurons in the spinal cord, leading to progressive muscle weakness and wasting. It is the leading genetic cause of death in infants and young children. Symptoms can range from mild to severe, and may include difficulty walking, crawling, or even breathing. There is currently no cure for SMA, but treatments are available to help manage symptoms and improve quality of life.

What are the symptoms of Spinal Muscular Atrophy?

The symptoms of Spinal Muscular Atrophy (SMA) vary depending on the type and severity of the condition. Generally, the symptoms include:

-Weakness and Decreased muscle tone in the arms and legs

-Difficulty with movement, such as crawling, walking, or lifting objects

-Difficulty breathing or swallowing

-Loss of reflexes

-Scoliosis (curvature of the spine)

-Joint contractures (Stiffness in the joints)

-Muscle wasting

-Fatigue

-Difficulty speaking or speaking with a hoarse voice

-Difficulty chewing or swallowing

-Drooling

-Loss of head control

What are the causes of Spinal Muscular Atrophy?

Spinal Muscular Atrophy (SMA) is caused by a genetic mutation in the SMN1 gene, which is responsible for producing a protein called survival motor neuron (SMN). This protein is essential for the maintenance and survival of the nerve cells that control muscle movement. Without enough of this protein, the nerve cells gradually deteriorate, leading to muscle weakness and wasting.

What are the treatments for Spinal Muscular Atrophy?

The treatments for Spinal Muscular Atrophy (SMA) vary depending on the type and severity of the condition. Treatment options may include physical therapy, occupational therapy, speech therapy, nutritional support, medications, and surgery. In some cases, gene therapy may be an option.

What are the risk factors for Spinal Muscular Atrophy?

1. Family history: Spinal muscular atrophy is an inherited disorder, so having a family history of the condition increases the risk.

2. Age: The risk of developing spinal muscular atrophy increases with age.

3. Gender: Males are more likely to develop spinal muscular atrophy than females.

4. Ethnicity: Spinal muscular atrophy is more common in certain ethnic groups, such as those of Ashkenazi Jewish descent.

5. Exposure to certain toxins: Exposure to certain toxins, such as lead, may increase the risk of developing spinal muscular atrophy.

Is there a cure/medications for Spinal Muscular Atrophy?

Yes, there are medications and treatments available for Spinal Muscular Atrophy (SMA). The most common treatments are physical therapy, occupational therapy, and speech therapy. Additionally, there are medications available to help manage symptoms and slow the progression of the disease. The most common medications used to treat SMA are Spinraza (nusinersen) and Zolgensma (onasemnogene abeparvovec-xioi).