SMN1 gene study in three families in which ALS and spinal muscular atrophy co-exist.
case_series · Level IV
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Abstract
Spinal muscular atrophy (SMA) is caused by SMN1 gene deletions or mutations, and ALS is the most frequent motor neuron condition in adults. The authors describe three families in which ALS and SMA coexist. The authors found that no SOD1 mutation was found within these families; all three ALS cases had at least two SMN1 copies; and an abnormal SMN1 gene locus did not explain the co-occurrence of these two motor neuron disorders in these families.
Medical subject headings
- Amyotrophic Lateral Sclerosis
- Muscular Atrophy, Spinal
- Nerve Tissue Proteins