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Department of Human
Genetics, 19/20 Claremont Place, Newcastle upon Tyne NE2 4AA, UK
Correspondence to: Dr Lynch, S.A.Lynch{at}ncl.ac.uk
Autosomal dominant sacral agenesis is characterised by a
partial agenesis of the sacrum typically involving sacral vertebrae S2-S5 only. Associated features include anorectal malformation, a
presacral mass, and urogenital malformation. Together, these features
have been defined as the Currarino syndrome. Recently, HLXB9 has been identified as the major
causative gene in Currarino syndrome allowing identification of
asymptomatic heterozygotes. In this review, we have performed an
analysis of medical publications, and our own additional cases, to
identify the range of malformations and complications that occur. We
have also estimated risks of malformation in heterozygotes by using
Weinburg's proband method on families personally known to us in order
to provide accurate genetic counselling information.
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