Document Detail

Monozygotic twins discordant for vascular malformations and dysregulated growth.
MedLine Citation:
PMID:  19716450     Owner:  NLM     Status:  MEDLINE    
There is a large group of disorders characterized by non-cranial vascular malformations and a dysregulated growth, of which the prototype may be Klippel-Trenaunay syndrome (KTS). The aetiology of KTS and vascular malformations-dysregulated growth (VM-DG) syndromes resembling KTS is obscure, but polygenic paradominant inheritance involving mutations or polymorphisms in two or more genes simultaneously, of which one (or more) are involved in (lymph)angiogenesis and the other(s) in growth regulation has been proposed for KTS and related VM-DG entities. This provides an explanation for the variability of the VM-DG syndromes through the numerous possible combinations of mutated genes involved. We report on three monozygotic female twins who are discordant for a VM-DG syndrome resembling KTS. We suggest that our observation is consistent with the concept of polygenic paradominant inheritance involving two or more genes. We discuss the published observations in twins discordant for other disorders associated with disturbed growth regulation such as Beckwith-Wiedemann syndrome and Silver-Russell syndrome, and the occurrence in cousins with KTS and Beckwith-Wiedemann syndrome, which are best explained by an imprinting disturbance. We propose that, similarly, disturbed imprinting plays a role in the pathogenesis of VM-DG syndromes in general, and suggest the same may hold for KTS in sensu strictu or Proteus syndrome. Further studies to investigate imprinting status in VM-DG syndromes, including KTS and Proteus syndrome, are warranted.
Charl?ne E U Oduber; Jet Bliek; Chantal M A M van der Horst; Maurice A M van Steensel; Raoul C M Hennekam
Publication Detail:
Type:  Case Reports; Journal Article; Research Support, Non-U.S. Gov't; Twin Study     Date:  2009-08-28
Journal Detail:
Title:  European journal of medical genetics     Volume:  53     ISSN:  1878-0849     ISO Abbreviation:  Eur J Med Genet     Publication Date:    2010 Jan-Feb
Date Detail:
Created Date:  2010-02-04     Completed Date:  2010-04-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101247089     Medline TA:  Eur J Med Genet     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  14-8     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2009 Elsevier Masson SAS. All rights reserved.
Department of Plastic, Reconstructive and Hand Surgery, Academic Medical Center, Amsterdam, The Netherlands.
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MeSH Terms
Beckwith-Wiedemann Syndrome / genetics,  pathology
Diseases in Twins / genetics*
Genomic Imprinting
Klippel-Trenaunay-Weber Syndrome / genetics,  pathology*
Middle Aged
Silver-Russell Syndrome / genetics,  pathology
Twins, Monozygotic / genetics*
Vascular Malformations / genetics,  pathology

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