Spinal muscular atrophy (SMA) type 1 is a genetic condition in which the nerves that control movement, breathing, and swallowing become progressively weaker and smaller. SMA has five types with ...

Spinal muscular atrophy (SMA) is a genetic neuromuscular disease affecting specialized nerve cells that control voluntary muscle movement, according to the Muscular Dystrophy Association (MDA). It can ...

Spinal and bulbar muscular atrophy (SBMA), also known as Kennedy’s disease, is a rare genetic disorder. It affects certain nerve cells in the spinal cord and the brainstem. “Bulbar” refers to a ...

At its core, SMA is caused by a deficiency in a protein called Survival Motor Neuron (SMN) . This protein is essential for ...