MFN2 deletion of exons 7 and 8: founder mutation in the UK population

2.50
Hdl Handle:
http://hdl.handle.net/11287/594013
Title:
MFN2 deletion of exons 7 and 8: founder mutation in the UK population
Authors:
Carr, A. S.; Polke, J. M.; Wilson, J.; Pelayo-Negro, A. L.; Laura, M.; Nanji, T.; Holt, J.; Vaughan, J.; Rankin, Julia; Sweeney, M. G.; Blake, J.; Houlden, H.; Reilly, M. M.
Abstract:
Mitofusin 2 (MFN2) mutations are the most common cause of axonal Charcot-Marie-Tooth disease (CMT2). The majority are inherited in an autosomal dominant manner but recessive and semi-dominant kindreds have also been described. We previously reported a deletion of exons 7 and 8 resulting in nonsense-mediated decay, segregating with disease when present in trans with another pathogenic MFN2 mutation. Detailed clinical and electrophysiological data on a series of five affected patients from four kindreds and, when available, their parents and relatives were collected. MFN2 Sanger sequencing, multiplex ligation probe amplification, and haplotype analysis were performed. A severe early-onset CMT phenotype was seen in all cases: progressive distal weakness, wasting, and sensory loss from infancy or early childhood. Optic atrophy (four of five) and wheelchair dependency in childhood were common (four of five). All were compound heterozygous for a deletion of exons 7 and 8 in MFN2 with another previously reported pathogenic mutation (Phe216Ser, Thr362Met, and Arg707Trp). Carrier parents and relatives were unaffected (age range: 24-82 years). Haplotype analysis confirmed that the deletion had a common founder in all families.
Citation:
J Peripher Nerv Syst. 2015 Jun;20(2):67-71.
Publisher:
Wiley
Journal:
Journal of the peripheral nervous system : JPNS
Issue Date:
21-Aug-2015
URI:
http://hdl.handle.net/11287/594013
DOI:
10.1111/jns.12117
PubMed ID:
26114802
Additional Links:
http://dx.doi.org/10.1111/jns.12117
Type:
Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
Language:
eng
ISSN:
1529-8027
Appears in Collections:
2015 RD&E publications; Clinical Genetics (Peninsula Genetics)

Full metadata record

DC FieldValue Language
dc.contributor.authorCarr, A. S.en
dc.contributor.authorPolke, J. M.en
dc.contributor.authorWilson, J.en
dc.contributor.authorPelayo-Negro, A. L.en
dc.contributor.authorLaura, M.en
dc.contributor.authorNanji, T.en
dc.contributor.authorHolt, J.en
dc.contributor.authorVaughan, J.en
dc.contributor.authorRankin, Juliaen
dc.contributor.authorSweeney, M. G.en
dc.contributor.authorBlake, J.en
dc.contributor.authorHoulden, H.en
dc.contributor.authorReilly, M. M.en
dc.date.accessioned2016-01-19T12:38:35Zen
dc.date.available2016-01-19T12:38:35Zen
dc.date.issued2015-08-21en
dc.identifier.citationJ Peripher Nerv Syst. 2015 Jun;20(2):67-71.en
dc.identifier.issn1529-8027en
dc.identifier.pmid26114802en
dc.identifier.doi10.1111/jns.12117en
dc.identifier.urihttp://hdl.handle.net/11287/594013en
dc.description.abstractMitofusin 2 (MFN2) mutations are the most common cause of axonal Charcot-Marie-Tooth disease (CMT2). The majority are inherited in an autosomal dominant manner but recessive and semi-dominant kindreds have also been described. We previously reported a deletion of exons 7 and 8 resulting in nonsense-mediated decay, segregating with disease when present in trans with another pathogenic MFN2 mutation. Detailed clinical and electrophysiological data on a series of five affected patients from four kindreds and, when available, their parents and relatives were collected. MFN2 Sanger sequencing, multiplex ligation probe amplification, and haplotype analysis were performed. A severe early-onset CMT phenotype was seen in all cases: progressive distal weakness, wasting, and sensory loss from infancy or early childhood. Optic atrophy (four of five) and wheelchair dependency in childhood were common (four of five). All were compound heterozygous for a deletion of exons 7 and 8 in MFN2 with another previously reported pathogenic mutation (Phe216Ser, Thr362Met, and Arg707Trp). Carrier parents and relatives were unaffected (age range: 24-82 years). Haplotype analysis confirmed that the deletion had a common founder in all families.en
dc.language.isoengen
dc.publisherWileyen
dc.relation.urlhttp://dx.doi.org/10.1111/jns.12117en
dc.titleMFN2 deletion of exons 7 and 8: founder mutation in the UK populationen
dc.typeJournal Articleen
dc.typeResearch Support, N.I.H., Extramuralen
dc.typeResearch Support, Non-U.S. Gov'ten
dc.identifier.journalJournal of the peripheral nervous system : JPNSen

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