Journal
PARKINSONISM & RELATED DISORDERS
Volume 16, Issue 9, Pages 585-589Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.parkreldis.2010.06.016
Keywords
Myoclonus-dystonia (M-D); Epsilon sarcoglycan gene; MLPA; Large deletion
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Funding
- National Science Council Taiwan [NSC 97-2314-B-182A-048, NSC 96-2628-B-182A-097-MY3]
- Chang Gung Medical Research Project [CMRPG 371111]
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We report three novel deletions of the SGCE gene in three families with myoclonus dystonia (M-D) syndrome in Taiwan Their clinical characteristics included early onset dominant myoclonus and dystonia in the neck trunk and upper limbs By direct sequencing of the SGCE gene coding regions we identified a small heterozygous deletion (c 842delA) in exon 7 of the three sibs and asymptomatic father in the first family and an eight-base heterozygous deletion (c 524_531del) in exon 5 of the mother and a daughter in the second family Using multiple ligation-dependent probe amplification (MLPA) a large heterozygous deletion of 2-11 exons was identified in the father and a son in the third family which was undetected by initial sequencing It is the largest intragenic deletion ever reported In conclusion we have identified three novel mutations of SGCE in the respective three M-D families The large deletion was responsible for one third of these M-D families which might implicate an important contribution to Taiwanese M-D syndrome We suggest that the contribution of large deletion should be further verified in a large cohort of patients with M-D syndrome in Han Chinese Crown Copyright (C) 2010 Published by Elsevier Ltd All rights reserved
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