Spinal muscular atrophy is classified like a motor neuron degenerative condition involving the anterior horn on the spinal twine and lessen motor neurons. This is due most commonly to a homozygous deletion of SMN1 on chromosome 5q11.2-13.3, causing an absence or minimize in deep tendon reflexes, diffuse symmetrical proximal weakness https://vanb085tyc9.dekaronwiki.com/user