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Williams-Beuren syndrome: Renal manifestations

Wayne R Waz, MD
Section Editors
Helen V Firth, DM, FRCP, DCH
Patrick Niaudet, MD
Deputy Editor
Melanie S Kim, MD


Williams-Beuren syndrome (WBS) (also known as Williams syndrome; OMIM #194050 [1]) is a multisystem genetic disorder caused by hemizygous deletion of 1.5 to 1.8 Mb on chromosome 7q11.23, which encompasses approximately 28 genes, including the elastin gene, ELN.

A summary of the diagnosis and evaluation of WBS and an in-depth review of the renal manifestations of this disorder are presented here.


The use of genetic testing to confirm the diagnosis has demonstrated that WBS is one of the more common genetic disorders, with an estimated incidence of 1:10,000 live births [2].


Affected patients present with variable phenotypic expression of the following manifestations [3]:

"Elfin" facies, consisting of a broad forehead, medial eyebrow flare, strabismus, flat nasal bridge, malar flattening, a short nose with a long philtrum, full lips, and a wide mouth (picture 1) [3-5].


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Literature review current through: Sep 2016. | This topic last updated: May 26, 2016.
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