Rudaina Banihani1, Berivan Baskin, William Halliday, Jeff Kobayashi, Anne Kawamura, Laura McAdam, Peter N Ray, Grace Yoon. 1. *Division of Developmental Paediatrics, Department of Paediatrics, University of Toronto, Toronto, ON, Canada; †Child Development Program, Holland Bloorview Kids Rehabilitation Hospital, Toronto, ON, Canada; ‡Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden; §Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; ‖Division of Neurology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; ¶Department of Molecular Genetics, The University of Toronto, Toronto, ON, Canada; **Division of Clinical and Metabolic Genetics, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
Abstract
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.
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.
Authors: Megan A Waldrop; Felecia Gumienny; Saleh El Husayni; Diane E Frank; Robert B Weiss; Kevin M Flanigan Journal: Neuromuscul Disord Date: 2017-11-23 Impact factor: 3.538
Authors: Marco Orsini; Ana Carolina; Andorinho de F Ferreira; Anna Carolina Damm de Assis; Thais Magalhães; Silmar Teixeira; Victor Hugo Bastos; Victor Marinho; Thomaz Oliveira; Rossano Fiorelli; Acary Bulle Oliveira; Marcos R G de Freitas Journal: Neurol Int Date: 2018-07-04