Síndrome de Williams: Aspectos clínicos y bases moleculares

Translated title of the contribution: Williams syndrome: Its clinical aspects and molecular bases

A. Antonell, M. Del Campo, R. Flores, V. Campuzano, Luis Perez-Jurado

Research output: Contribution to journalReview articlepeer-review

9 Citations (Scopus)

Abstract

Introduction and development. Williams syndrome is a developmental disorder with an estimated prevalence of 1 in 7,500 newborns. Its phenotype is characterized by distinctive facial features, mild to moderate mental retardation and general cognitive deficits with a non-uniform profile, having problems in some areas (psychomotricity, visuospatial integration) and relative preservation of others (language, musicality), friendly personality, occasional hypercalcemia of infancy, and a vasculopathy with supravalvular aortic stenosis. Williams syndrome is caused by a submicroscopic deletion of 1.55 Mb in the chromosome band 7q11.23, which includes 26-28 genes. The mutational mechanism consists in a misalignment between regions of almost identical sequence and the subsequent unequal recombination. The reciprocal product of this rearrangement is the duplication of this region, causing a language specific disorder. Conclusions. Clinical-molecular correlations establishment through a good phenotypic characterization and the precise analysis of breakpoints in patients with atypical and typical deletions, altogether with the design of animal models and functional studies in vitro for the genes of the interval will be important to be able to determine the exact contribution of the genes to the phenotype, to know their pathogenesis and physiopathology, and to identify therapeutic methods.

Translated title of the contributionWilliams syndrome: Its clinical aspects and molecular bases
Original languageSpanish
JournalRevista de Neurologia
Volume42
Issue numberSUPPL.1
Publication statusPublished - 1 Dec 2006
Externally publishedYes

Keywords

  • Animal models
  • Deletion
  • Haploinsufficiency
  • Segmental duplications
  • Unequal recombination
  • Williams syndrome

ASJC Scopus subject areas

  • Clinical Neurology

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