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Objective: Dystrophinopathy is an X-linked recessive muscular dystrophy caused by mutations in the DMD gene. Herein we describe the prenatal detection of DMD gene mutations in a patient with no family history, by multiplex ligation-dependent probe amplification (MLPA) after noninvasive prenatal screening (NIPS).
Case Report: A 41-year-old woman underwent NIPS owing to an advanced maternal age. A copy number variation was detected in the maternal X chromosome, and uninformative results were obtained for the fetal sex chromosomes. Following amniocentesis, a duplication was identified in exons 1-29 of the dystrophin gene by MLPA. After interviewing her family members it was confirmed that the patient is a de novo carrier of DMD duplications, and her daughter is a carrier of the same mutation.
Conclusion: his is the first case report to describe the prenatal diagnosis of duplications in the DMD gene by MLPA following NIPS in a patient with no family history.
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http://dx.doi.org/10.1016/j.tjog.2021.03.035 | DOI Listing |
Skelet Muscle
September 2025
Sorbonne Université, Inserm, Institut de Myologie, Centre de Recherche en Myologie, Paris, France.
Duchenne muscular dystrophy (DMD) is a severe, progressive genetic disorder caused by mutations in the DMD gene, resulting in the absence of dystrophin-a key structural protein at the sarcolemma. As the disease progresses, cardiac involvement becomes a leading cause of morbidity and mortality. By adolescence or early adulthood, many patients develop dilated cardiomyopathy and arrhythmias.
View Article and Find Full Text PDFZhonghua Nei Ke Za Zhi
September 2025
Duchenne muscular dystrophy (DMD) is an X-linked recessive myopathy caused by mutations in the dystrophin gene, which is divided into presymptomatic, early ambulatory, late ambulatory, early non-ambulatory, and late non-ambulatory stages according to its disease progression. Some patients experience non-progressive cognitive developmental delays in the presymptomatic stage. DMD patients gradually develop osteoporosis, cardiomyopathy, decreased respiratory function, delayed puberty, and gastrointestinal symptoms as the disease progresses.
View Article and Find Full Text PDFMol Ther Nucleic Acids
September 2025
Center for Genetic Medicine Research, Children's National Research Institute, Children's National Research and Innovation Campus, Children's National Hospital, Washington, DC 20012, USA.
Despite the proven safety of dystrophin-targeting phosphorodiamidate morpholino oligomer (PMO) therapy, poor delivery of the PMOs limit the efficacy of this dystrophin restoring gene therapy for Duchenne muscular dystrophy (DMD). Limited myogenesis and excessive fibrosis in DMD are pathological features that contribute to the poor efficacy of PMOs. We show that the severe DMD mouse model (D2-) not only replicates these pathological features of DMD but also mirrors the resulting PMO-mediated dystrophin restoration deficit.
View Article and Find Full Text PDFbioRxiv
August 2025
Department of Pharmacology & Therapeutics and Myology Institute, University of Florida College of Medicine; Gainesville, FL USA.
Duchenne muscular dystrophy (DMD) is a lethal pediatric striated muscle disease caused by loss of dystrophin for which there is no cure. Cardiomyopathy is the leading cause of death amongst individuals with DMD, and effective therapeutics to treat DMD cardiomyopathy are a major unmet clinical need. This work investigated adeno-associated viral (AAV) gene therapy approaches to treat DMD cardiomyopathy by overexpression of the calcium binding proteins S100A1 and apoptosis repressor with caspase recruitment domains (ARC).
View Article and Find Full Text PDFMol Ther Methods Clin Dev
September 2025
Université Paris-Saclay, Univ Evry, Inserm, Integrare Research Unit UMR_S951, Genethon, 91000 Evry-Courcouronnes, France.
Tissue fibrosis is a pathological feature of many diseases including muscular dystrophies such as Duchenne muscular dystrophy (DMD). Fibrosis may limit the effectiveness of gene therapy in muscle impacting on viral dosing but direct evidence is lacking. Strategies to reduce skeletal muscle fibrosis are limited.
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