1. A small interstitial deletion in the GPC3 gene causes Simpson-Golabi-Behmel syndrome in a Dutch-Canadian family.
- Author
-
Xuan JY, Hughes-Benzie RM, and MacKenzie AE
- Subjects
- Bone and Bones abnormalities, Canada, Chromosomes, Human, Pair 11 genetics, Female, Frameshift Mutation, Glypicans, Heparitin Sulfate blood, Humans, Male, Pedigree, Proteoglycans blood, Sequence Analysis, DNA, Syndrome, Wilms Tumor complications, X Chromosome genetics, Heparan Sulfate Proteoglycans, Heparitin Sulfate genetics, Proteoglycans genetics, Sequence Deletion
- 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.
- Published
- 1999