Encephalopathy and bilateral cataract in a boy with an interstitial deletion of Xp22 comprising the CDKL5 and NHS genes.

Abstract

We describe a male patient with a deletion at Xp22, detected by high resolution X-array CGH. The clinical phenotype present in this infant boy, consists of severe encephalopathy, congenital cataracts and tetralogy of Fallot and can be attributed to the deletion of the genes within the interval. Among these deleted genes are the gene for Nance-Horan syndrome and the cyclin-dependent kinase-like 5 gene (CDKL5), responsible for the early seizure variant of Rett syndrome. This is the first description of a male patient with a deletion of these genes, showing the involvement of CDKL5 in severe epileptic encephalopathy in males. Moreover it illustrates the added value of high resolution array-CGH in molecular diagnosis of mental retardation-multiple congenital anomaly cases.

• Authors: Hilde Van Esch, Anna Jansen, Marijke Bauters, Guy Froyen, Jean-Pierre Fryns
• Journal: American journal of medical genetics. Part A (Am J Med Genet A) Vol. 143 Issue 4 Pg. 364-9 (Feb 15 2007) ISSN: 1552-4825 [Print] United States
• PMID: 17256798 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: (c) 2007 Wiley-Liss, Inc.

Chemical References

• Membrane Proteins
• NHS protein, human
• Nuclear Proteins
• Protein Serine-Threonine Kinases
• CDKL5 protein, human

Topics

• Abnormalities, Multiple (diagnosis)
• Cataract (congenital, genetics, pathology)
• Chromosomes, Human, X
• Epilepsy (genetics, pathology)
• Gene Deletion
• Humans
• In Situ Hybridization
• Infant
• Intellectual Disability (diagnosis)
• Male
• Membrane Proteins
• Nuclear Proteins (genetics)
• Phenotype
• Protein Serine-Threonine Kinases (genetics)
• Tetralogy of Fallot (pathology)