Interstitial deletion in Xp22.3 is associated with X linked ichthyosis, mental retardation, and epilepsy
- aDepartment of Paediatrics, University of Bonn, Germany, bInstitute for Human Genetics, University of Bonn, Germany, cInstitute for Human Genetics, University of Heidelberg, Germany
- Dr Haverkamp, Zentrum für Kinderheilkunde der Universität Bonn, Adenauerallee 119, 53113 Bonn, Germany, f.haverkamp{at}uni-bonn.de
- Revised 8 February 2000
- Accepted 10 April 2000
Abstract
We describe monozygotic male twins with an interstitial deletion of Xp22.3 including the steroid sulphatase gene (STS). The twins had X linked ichthyosis, X linked mental retardation, and epilepsy. A locus for X linked mental retardation has been assigned to a region betweenSTS and DXS31 spanning approximately 3 Mb. Recently the locus was further refined to an approximately 1 Mb region between DXS1060 and GS1. By PCR analysis of flanking STS gene markers in our patients we succeeded in narrowing down the locus to between DXS6837 andGS1.








