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Updated: Oct 5, 2025

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
Published on: August 20, 2019
A SOX3 duplication and lumbosacral spina bifida in three generations
Kameryn M Butler1, Timothy Fee1, Barbara R DuPont1
1Greenwood Genetic Center, Greenwood, South Carolina, USA.
Abstract:
Chromosomal aneuploidies, microduplications and microdeletions are the most common confirmed genetic causes of spina bifida. Microduplications of Xq27 containing the SOX3 gene have been reported in 11 cases, confirming the existence of an X-chromosomal locus for spina bifida. A three generation kindred reported here with a SOX3 duplication has been identified in one of 17 kindreds with recurrences in the 29 years of the South Carolina Neural Tube Defect Prevention Program. Other recurrences during this time period included siblings with an APAF1 mutation, siblings with a CASP9 mutation, siblings with a microdeletion of 13q, and two sets of siblings with Meckel syndrome who did not have genetic/genomic studies performed.
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