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Case Reports in Genetics
Volume 2015, Article ID 453105, 3 pages
http://dx.doi.org/10.1155/2015/453105
Case Report

Unusual Presentation of Pelizaeus-Merzbacher Disease: Female Patient with Deletion of the Proteolipid Protein 1 Gene

Silicon Valley Genetics Center, Santa Clara Valley Medical Center, San Jose, CA 95128, USA

Received 14 January 2015; Accepted 10 February 2015

Academic Editor: Patrick Morrison

Copyright © 2015 Teva Brender et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Pelizaeus-Merzbacher disease (PMD) is neurodegenerative leukodystrophy caused by dysfunction of the proteolipid protein 1 (PLP1) gene on Xq22, which codes for an essential myelin protein. As an X-linked condition, PMD primarily affects males; however there have been a small number of affected females reported in the medical literature with a variety of different mutations in this gene. No affected females to date have a deletion like our patient. In addition to this, our patient has skewed X chromosome inactivation which adds to her presentation as her unaffected mother also carries the mutation.