Tandem duplication of DMD exon 18 associated with epilepsy, macroglossia, and endocrinologic abnormalities

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Claudia Weiss - , Charité – Universitätsmedizin Berlin (Autor:in)
  • Sibylle Jakubiczka - , Otto-von-Guericke-Universität Magdeburg (Autor:in)
  • Angela Huebner - , Klinik und Poliklinik für Kinder- und Jugendmedizin (Autor:in)
  • Eva Klopocki - , Charité – Universitätsmedizin Berlin (Autor:in)
  • Wolfram Kress - , Julius-Maximilians-Universität Würzburg (Autor:in)
  • Thomas Voit - , Universität Duisburg-Essen (Autor:in)
  • Christoph Hübner - , Charité – Universitätsmedizin Berlin (Autor:in)
  • Markus Schuelke - , Charité – Universitätsmedizin Berlin (Autor:in)

Abstract

We describe a patient with Duchenne muscular dystrophy (DMD) who additionally suffered from intractable seizures, severe mental retardation, and a marked macroglossia. He also had endocrinologic abnormalities consisting of growth hormone deficiency, delayed puberty, and adrenal hypoplasia. We detected a duplication of DMD Dexon 18 and flanking introns that caused a frame-shift and was not removed by corrective splicing. A coincident mutation in the FKRP gene was excluded by direct sequencing. Complex DNA rearrangements, deletions, and duplications >100 kb were excluded through microarray-comparative genomic hybridization (CGH), although we were not able to exclude a second coincident mutation with certainty. In conclusion, we present a case of DMD that conflicts with current understanding of genotype-phenotype relations and discuss putative pathogenetic mechanisms for this uncommon phenotype.

Details

OriginalspracheEnglisch
Seiten (von - bis)396-401
Seitenumfang6
FachzeitschriftMuscle and Nerve
Jahrgang35
Ausgabenummer3
PublikationsstatusVeröffentlicht - März 2007
Peer-Review-StatusJa

Externe IDs

researchoutputwizard legacy.publication#19203
Scopus 33847676235
PubMed 17143888

Schlagworte

Schlagwörter

  • Adrenal hypoplasia, Duchenne muscular dystrophy, Gene duplication, Growth hormone deficiency, Macroglossia