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Ataluren treatment of patients with nonsense mutation dystrophinopathy
Journal article   Open access   Peer reviewed

Ataluren treatment of patients with nonsense mutation dystrophinopathy

Katharine Bushby, Richard Finkel, Brenda Wong, Richard Barohn, Craig Campbell, Giacomo P Comi, Anne M Connolly, John W Day, Kevin M Flanigan, Nathalie Goemans, …
Muscle & nerve, Vol.50(4), pp.477-487
10/2014
DOI: 10.1002/mus.24332
PMCID: PMC4241581
PMID: 25042182
url
https://doi.org/10.1002/mus.24332View
Published (Version of record) Open Access

Abstract

ABSTRACT Introduction: Dystrophinopathy is a rare, severe muscle disorder, and nonsense mutations are found in 13% of cases. Ataluren was developed to enable ribosomal readthrough of premature stop codons in nonsense mutation (nm) genetic disorders. Methods: Randomized, double‐blind, placebo‐controlled study; males ≥5 years with nm‐dystrophinopathy received study drug orally 3 times daily, ataluren 10, 10, 20 mg/kg (N = 57); ataluren 20, 20, 40 mg/kg (N = 60); or placebo (N = 57) for 48 weeks. The primary endpoint was change in 6‐Minute Walk Distance (6MWD) at Week 48. Results: Ataluren was generally well tolerated. The primary endpoint favored ataluren 10, 10, 20 mg/kg versus placebo; the week 48 6MWD Δ = 31.3 meters, post hoc P = 0.056. Secondary endpoints (timed function tests) showed meaningful differences between ataluren 10, 10, 20 mg/kg, and placebo. Conclusions: As the first investigational new drug targeting the underlying cause of nm‐dystrophinopathy, ataluren offers promise as a treatment for this orphan genetic disorder with high unmet medical need. Muscle Nerve 50: 477–487, 2014
genetic nonsense mutation orphan Duchenne muscular dystrophy pediatric

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