What is spinal muscular atrophy? Spinal muscular atrophy (SMA) represents a group of genetic (inherited) neuromuscular disorders that cause certain muscles to become weak and waste …

Spinal muscular atrophy (SMA) is a rare neuromuscular disorder that results in the loss of motor neurons and progressive muscle wasting. [3][4][5] It is usually diagnosed in infancy or early …

Jul 30, 2024 · Insufficient levels of SMN protein leads to loss of motor neurons in the spinal cord and causes weakness and wasting of the skeletal muscles. The most common form of SMA is …

SMA involves the loss of nerve cells called motor neurons in the spinal cord and is classified as a motor neuron disease. In the most common form of SMA (chromosome 5-related SMA, or …

Spinal muscular atrophy (SMA) is a disorder affecting the motor neurons—nerve cells that control voluntary muscle movement. These cells are located in the spinal cord.

Spinal muscular atrophy is a genetic disorder characterized by weakness and wasting (atrophy) in muscles used for movement (skeletal muscles). It is caused by a loss of specialized nerve …

Spinal muscular atrophy is a genetic condition that causes progressive muscle weakness by affecting the nerves that control movement, with symptoms ranging from mild to severe. There …

SMA is a collection of different motor nerve (or neuron) diseases. The disease is caused by a lack of a protein (SMN) due to defective genes. Most of the time, a person must get one copy of the …

Spinal muscular atrophies are hereditary disorders in which nerve cells that originate in the spinal cord and brain stem degenerate, causing progressive muscle weakness and wasting. The 5 …

Find out about spinal muscular atrophy (SMA) including the symptoms, types, causes, how it's diagnosed and the treatment and support available.