Information de reference pour ce titreAccession Number: | 00006114-201408120-00009.
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Author: | Liu, Yo-Tsen MD; Laura, Matilde MD, PhD; Hersheson, Joshua MD; Horga, Alejandro MD; Jaunmuktane, Zane MD; Brandner, Sebastian MD, PhD; Pittman, Alan PhD; Hughes, Deborah BSc; Polke, James M. PhD; Sweeney, Mary G. BSc; Proukakis, Christos MD, PhD; Janssen, John C. MD; Auer-Grumbach, Michaela MD, PhD; Zuchner, Stephan MD; Shields, Kevin G. MD; Reilly, Mary M. MD; Houlden, Henry MD, PhD
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Institution: | From the MRC Centre for Neuromuscular Diseases (Y.-T.L., M.L., A.H., M.M.R., H.H.) and Departments of Molecular Neuroscience (Y.-T.L., J.H., A.H., A.P., D.H., M.M.R., H.H.) and Clinical Neuroscience (C.P.), UCL Institute of Neurology; National Hospital for Neurology and Neurosurgery and UCLH (M.L., J.H., A.H., K.G.S., M.M.R., H.H.), London, UK; Section of Epilepsy (Y.-T.L.), Department of Neurology, Neurological Institute, Taipei Veterans General Hospital; National Yang-Ming University School of Medicine (Y.-T.L.), Taipei, Taiwan; Division of Neuropathology (Z.J., S.B.) and Neurogenetics Unit (J.M.P, M.G.S.), National Hospital for Neurology and Neurosurgery; Department of Neurology (J.C.J.), Chelsea and Westminster Hospital, London, UK; Department of Orthopaedics (M.A.-G.), Medical University Vienna, Austria; and Dr. John T. MacDonald Department of Human Genetics and Hussman Institute for Human Genomics (S.Z.), Miller School of Medicine, University of Miami, FL.
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Title: | |
Source: | Neurology. 83(7):612-619, August 12, 2014.
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Abstract: | Objective: To establish the phenotypic spectrum of KIF5A mutations and to investigate whether KIF5A mutations cause axonal neuropathy associated with hereditary spastic paraplegia (HSP) or typical Charcot-Marie-Tooth disease type 2 (CMT2).
Methods: KIF5A sequencing of the motor-domain coding exons was performed in 186 patients with the clinical diagnosis of HSP and in 215 patients with typical CMT2. Another 66 patients with HSP or CMT2 with pyramidal signs were sequenced for all exons of KIF5A by targeted resequencing. One additional patient was genetically diagnosed by whole-exome sequencing.
Results: Five KIF5A mutations were identified in 6 unrelated patients: R204W and D232N were novel mutations; R204Q, R280C, and R280H have been previously reported. Three patients had CMT2 as the predominant and presenting phenotype; 2 of them also had pyramidal signs. The other 3 patients presented with HSP but also had significant axonal neuropathy or other additional features.
Conclusion: This is currently the largest study investigating KIF5A mutations. By combining next-generation sequencing and conventional sequencing, we confirm that KIF5A mutations can cause variable phenotypes ranging from HSP to CMT2. The identification of mutations in CMT2 broadens the phenotypic spectrum and underlines the importance of KIF5A mutations, which involve degeneration of both the central and peripheral nervous systems and should be tested in HSP and CMT2.
(C) 2014 American Academy of Neurology
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Language: | English.
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Document Type: | Article.
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Journal Subset: | Clinical Medicine. Life & Biomedical Sciences.
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ISSN: | 0028-3878
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NLM Journal Code: | 0401060, nz0
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DOI Number: | https://dx.doi.org/10.1212/WNL.0...- ouverture dans une nouvelle fenêtre
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