Journal
ARQUIVOS DE NEURO-PSIQUIATRIA
Volume 80, Issue 5, Pages 249-256Publisher
ASSOC ARQUIVOS NEURO- PSIQUIATRIA
DOI: 10.1590/0004-282X-ANP-2022-S135
Keywords
Genetic Therapy; Dependovirus or Adeno-Associated Virus (AAVs); Muscular Atrophy; Spinal; Survival of Motor Neuron 1 Protein; Genetic Vectors
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Gene therapy holds promise for treating monogenic neuromuscular disorders by using viral vectors to deliver therapeutic transgenes that can restore normal protein levels or silence genes causing toxic effects. Spinal muscular atrophy (SMA) is successfully treated with an AAV9-based vector gene therapy known as AVXS-101. This review discusses the mechanisms of viral vectors and presents clinical trials supporting the approval of gene therapy for SMA and other potentially treatable neuromuscular diseases.
Monogenic neuromuscular disorders are potentially treatable through gene therapy. Using viral vectors, a therapeutic transgene aims to restore normal levels of a protein not produced by the defective gene, or to silence a gene whose expression leads to toxic effects. Spinal Muscular Atrophy (SMA) is a good example of a monogenic disease that currently has an AAV9-based vector gene therapy as a therapeutic option. In this review, we intend to discuss the viral vectors and their mechanisms of action, in addition to reviewing the clinical trials that supported the approval of gene therapy (AVXS-101) for SMA as well as neuromuscular diseases that are potentially treatable with gene replacement therapy.
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