Simply Stated: What is Spinal Muscular Atrophy?
Spinal muscular atrophy (SMA) is a neuromuscular disease that affects and impairs voluntary muscle movement. It is the leading genetic cause of infant death. SMA is caused by a mutated or missing survival motor neuron 1 gene (SMN1) that prevents the body from making enough survival motor neuron protein (SMN), ultimately resulting in motor neuron . . .