Expanded Prader–Willi syndrome due to chromosome 15q11.2–14 deletion: Report and a review of literature
Identifieur interne : 003B59 ( Main/Exploration ); précédent : 003B58; suivant : 003B60Expanded Prader–Willi syndrome due to chromosome 15q11.2–14 deletion: Report and a review of literature
Auteurs : Anthony P. Y. Liu [République populaire de Chine] ; Wing Fai Tang [République populaire de Chine] ; Elizabeth T. Lau [République populaire de Chine] ; Kelvin Y. K. Chan [République populaire de Chine] ; Anita S. Y. Kan [République populaire de Chine] ; Kar Yin Wong [République populaire de Chine] ; Winnie W. Y. Tso [République populaire de Chine] ; Khair Jalal [République populaire de Chine] ; So Lun Lee [République populaire de Chine] ; Christy S. K. Chau [République populaire de Chine] ; Brian H. Y. Chung [République populaire de Chine, Hong Kong]Source :
- American Journal of Medical Genetics Part A [ 1552-4825 ] ; 2013-06.
Abstract
We report on a male infant with de novo unbalanced t(5;15) translocation resulting in a 17.23 Mb deletion within 15q11.2–q14 and a 25.12 kb deletion in 5pter. The 15q11.2–q14 deletion encompassed the 15q11.2–q13 Prader–Willi syndrome (PWS) critical region and the recently described 15q13.3 microdeletion syndrome region while the 5pter deletion contained no RefSeq genes. From our literature review, patients with similar deletions in chromosome 15q exhibit expanded phenotype of severe developmental delay, protracted feeding problem, absent speech, central visual impairment, congenital malformations and epilepsy in addition to those typical of PWS. The patient reported herein had previously unreported anomalies of mega cisterna magna, horseshoe kidney and the rare neonatal interstitial lung disease known as pulmonary interstitial glycogenosis. Precise breakpoint delineation by microarray is useful in patients with atypical PWS deletions to guide investigation and prognostication. © 2013 Wiley Periodicals, Inc.
Url:
DOI: 10.1002/ajmg.a.35909
Affiliations:
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<front><div type="abstract" xml:lang="en">We report on a male infant with de novo unbalanced t(5;15) translocation resulting in a 17.23 Mb deletion within 15q11.2–q14 and a 25.12 kb deletion in 5pter. The 15q11.2–q14 deletion encompassed the 15q11.2–q13 Prader–Willi syndrome (PWS) critical region and the recently described 15q13.3 microdeletion syndrome region while the 5pter deletion contained no RefSeq genes. From our literature review, patients with similar deletions in chromosome 15q exhibit expanded phenotype of severe developmental delay, protracted feeding problem, absent speech, central visual impairment, congenital malformations and epilepsy in addition to those typical of PWS. The patient reported herein had previously unreported anomalies of mega cisterna magna, horseshoe kidney and the rare neonatal interstitial lung disease known as pulmonary interstitial glycogenosis. Precise breakpoint delineation by microarray is useful in patients with atypical PWS deletions to guide investigation and prognostication. © 2013 Wiley Periodicals, Inc.</div>
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