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Journal of Medical Genetics logoLink to Journal of Medical Genetics
. 1999 Jan;36(1):57–58.

A small interstitial deletion in the GPC3 gene causes Simpson-Golabi-Behmel syndrome in a Dutch-Canadian family

J Xuan 1, R Hughes-Benzie 1, A MacKenzie 1
PMCID: PMC1762951  PMID: 9950367

Abstract

Deletions in the heparan sulphate proteoglycan encoding glypican 3 (GPC3) gene have recently been documented in several Simpson-Golabi-Behmel syndrome (SGBS) families. However, no precisely defined SGBS mutation has been published. We report here a 13 base pair deletion which causes a frameshift and premature termination of the GPC3 gene in the Dutch-Canadian SGBS family in whom the trait was originally mapped. Our analysis shows that a discrete GPC3 disabling mutation is sufficient to cause SGBS. Furthermore, our finding of a GPC3 normal daughter of an SGBS carrier with skeletal abnormalities and Wilms tumour raises the possibility of a trans effect from the maternal carrier in SGBS kindreds.


Keywords: Simpson-Golabi-Behmel syndrome; glypican 3; Wilms tumour

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