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  • Title: Optimization of antisense-mediated exon skipping for Duchenne muscular dystrophy.
    Author: Dzierlega K, Yokota T.
    Journal: Gene Ther; 2020 Sep; 27(9):407-416. PubMed ID: 32483212.
    Abstract:
    Duchenne muscular dystrophy (DMD) is one of the most common lethal muscle-wasting disorders affecting young boys caused by mutations in the DMD gene. Exon skipping has emerged as a promising therapy for DMD. Antisense oligonucleotides (AONs) are designed to induce the skipping of exon(s), in order to restore the reading frame, and therefore, allow for dystrophin expression. Eteplirsen and golodirsen, AONs for DMD exons 51 and 53 skipping, have been recently approved by the FDA. Viltolarsen, an AON for DMD exon 53 skipping, was approved in Japan earlier this year. Although promising, the efficacy of eteplirsen and AON sequence employed remain controversial. In addition, exon skipping faces challenges including the applicability and delivery. This article reviews and discusses exon skipping and the current advances being made in the field, on drugs, multi-exon skipping, sequence design, and applicability. We also discuss challenges and future directions that will facilitate the development of exon skipping therapy.
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