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Lookup NU author(s): Professor Michela GuglieriORCiD,
Professor Volker StraubORCiD,
Emerita Professor Katherine Bushby
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Duchenne muscular dystrophy (DMD) is characterised by the absence of dystrophin in muscle biopsies, although residual dystrophin can be present, either as dystrophin-positive (revertant) fibres or traces. As restoration of dystrophin expression is the end point of clinical trials, such residual dystrophin is a key factor in recruitment of patients and may also confound the analysis of dystrophin restoration in treated patients, if, as previously observed in the mdx mouse, revertant fibres increase with age. In 62% of the diagnostic biopsies reports of 65 DMD patients studied, traces or revertants were recorded with no correlation between traces or revertants, the patients' performance, or corticosteroids response. In nine of these patients, there was no increase in traces or revertants in biopsies taken a mean of 8.23. years (5.8-10.4. years) after the original diagnostic biopsy. This information should help in the design and execution of clinical trials focused on dystrophin restoration strategies. © 2010 Elsevier B.V.
Author(s): Arechavala-Gomeza V, Kinali M, Feng L, Guglieri M, Edge G, Main M, Hunt D, Lehovsky J, Straub V, Bushby K, Sewry C, Morgan J, Muntoni F
Publication type: Article
Publication status: Published
Journal: Neuromuscular Disorders
Print publication date: 14/04/2010
ISSN (print): 0960-8966
PubMed id: 20395141
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