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Elastin region deletions in Williams syndrome
Authors:Zhang J  Kumar A  Roux K  Williams C A  Wallace M R
Institution:Department of Pediatrics, University of Florida College of Medicine, Gainesville 32610-0296, USA.
Abstract:Williams syndrome (WS) is considered a contiguous gene syndrome, with most patients having a 1.5-Mb deletion of chromosome 7q11.23 containing the elastin gene and flanking genes. Studies of the frequency, extent, and origin of these deletions are ongoing in many labs to discover ultimately the molecular and pathogenetic basis for WS. An analysis of 9 sporadic WS families with typical phenotypes was performed by genotyping polymorphisms in the region. This study revealed deletions in all 9 patients, with one showing a novel deletion extending much further centromeric than any other WS deletions yet reported.
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