Dok-7 Mutations Underlie a Neuromuscular Junction Synaptopathy

Author:

Beeson David12345,Higuchi Osamu12345,Palace Jackie12345,Cossins Judy12345,Spearman Hayley12345,Maxwell Susan12345,Newsom-Davis John12345,Burke Georgina12345,Fawcett Peter12345,Motomura Masakatsu12345,Müller Juliane S.12345,Lochmüller Hanns12345,Slater Clarke12345,Vincent Angela12345,Yamanashi Yuji12345

Affiliation:

1. Neurosciences Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK.

2. Department of Clinical Neurology, University of Oxford, Radcliffe Infirmary, Woodstock Road, Oxford OX2 6HE, UK.

3. School of Neurology, Neurobiology, and Psychiatry, University of Newcastle, NE2 4HH, UK.

4. Department of Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University, Tokyo 113–8510, Japan.

5. First Department of Internal Medicine, Nagasaki University, Nagasaki 852–8501, Japan.

Abstract

Congenital myasthenic syndromes (CMSs) are a group of inherited disorders of neuromuscular transmission characterized by fatigable muscle weakness. One major subgroup of patients shows a characteristic “limb girdle” pattern of muscle weakness, in which the muscles have small, simplified neuromuscular junctions but normal acetylcholine receptor and acetylcholinesterase function. We showed that recessive inheritance of mutations in Dok-7, which result in a defective structure of the neuromuscular junction, is a cause of CMS with proximal muscle weakness.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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