Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder caused by the degeneration of alpha motor neurons of the anterior horns of the spinal cord, resulting in lower Survival Motor Neuron (SMN) protein production and leading to progressive muscle atrophy and weakness [1,2], making it a devastating neurodegenerative disease [3]. The gene discussed is SMN1; the disease is proximal spinal muscular atrophy.