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A Novel Mutation in DMD (c.10797+5G > A) Causes Becker Muscular Dystrophy Associated with Intellectual Disability
Univ Toronto, Dept Paediat, Div Dev Paediat, Toronto, ON M5S 1A1, Canada.;Holland Bloorview Kids Rehabil Hosp, Child Dev Program, Toronto, ON, Canada..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Medicinsk genetik och genomik.
Univ Toronto, Hosp Sick Children, Dept Paediat Lab Med, Toronto, ON M5G 1X8, Canada..
Univ Toronto, Hosp Sick Children, Dept Paediat, Div Neurol, Toronto, ON M5G 1X8, Canada..
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2016 (English)In: Journal of Developmental and Behavioral Pediatrics, ISSN 0196-206X, E-ISSN 1536-7312, Vol. 37, no 3, 239-244 p.Article in journal (Refereed) PublishedText
Abstract [en]

Background: Severe intellectual disability has been reported in a subgroup of patients with Duchenne muscular dystrophy but is not typically associated with Becker muscular dystrophy. Patient: The authors report a 13-year-old boy, with severe intellectual disability (Wechsler Intelligence Scales for Children-IV, Full Scale IQ < 0.1 percentile), attention-deficit hyperactivity disorder, and mild muscle weakness. He had elevated serum creatine kinase and dystrophic changes on muscle biopsy. Dystrophin immunohistochemistry revealed decreased staining with the C-terminal and mid-rod antibodies and essentially absent staining of the N-terminal immunostain. Sequencing of muscle mRNA revealed aberrant splicing due to a c.10797+5G > A mutation in DMD. Conclusion: Dystrophinopathy may be associated with predominantly cognitive impairment and neurobehavioral disorder, and should be considered in the differential diagnosis of unexplained cognitive or psychiatric disturbance in males.

Place, publisher, year, edition, pages
2016. Vol. 37, no 3, 239-244 p.
Keyword [en]
Becker muscular dystrophy (BMD), dystrophin, DMD, Dp71 isoform, intellectual disability
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URN: urn:nbn:se:uu:diva-296867DOI: 10.1097/DBP.0000000000000262ISI: 000374277300008PubMedID: 26836830OAI: oai:DiVA.org:uu-296867DiVA: diva2:940133
Available from: 2016-06-20 Created: 2016-06-20 Last updated: 2016-06-20Bibliographically approved

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Baskin, Berivan
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