Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Eur J Med Genet. 2012 Jun;55(6-7):404-13. doi: 10.1016/j.ejmg.2012.02.009. Epub 2012 Mar 29.

Xq28 duplications including MECP2 in five females: Expanding the phenotype to severe mental retardation.

Author information

  • 1Center for Human and Clinical Genetics, Leiden University Medical Center, Leiden, The Netherlands. e.k.bijlsma@lumc.nl

Abstract

Duplications leading to functional disomy of chromosome Xq28, including MECP2 as the critical dosage-sensitive gene, are associated with a distinct clinical phenotype in males, characterized by severe mental retardation, infantile hypotonia, progressive neurologic impairment, recurrent infections, bladder dysfunction, and absent speech. Female patients with Xq duplications including MECP2 are rare. Only recently submicroscopic duplications of this region on Xq28 have been recognized in four females, and a triplication in a fifth, all in combination with random X-chromosome inactivation (XCI). Based on this small series, it was concluded that in females with MECP2 duplication and random XCI, the typical symptoms of affected boys are not present. We present clinical and molecular data on a series of five females with an Xq28 duplication including the MECP2 gene, both isolated and as the result of a translocation, and compare them with the previously reported cases of small duplications in females. The collected data indicate that the associated phenotype in females is distinct from males with similar duplications, but the clinical effects may be as severe as seen in males.

Copyright © 2012 Elsevier Masson SAS. All rights reserved.

PMID:
22522176
[PubMed - indexed for MEDLINE]
PMCID:
PMC3383992
Free PMC Article

Images from this publication.See all images (4)Free text

Fig. 1
Fig. 2
Fig. 3
Fig. 4
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science Icon for PubMed Central
    Loading ...
    Write to the Help Desk