Spinal Muscular Atrophy | CheckRare.com
Spinal muscular atrophy (SMA) is a rare inherited neuromuscular disorder caused by an inadequate level of the survivor motor neuron (SMN) protein due to mutations in the SMN1 gene. The SMN protein appears to play a role in regulating small nuclear ribonucleoproteins complexes, and while its exact function remains unclear, the absence of the SMN …