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Analysis of RET, ZEB2, EDN3 and GDNF Genomic Rearrangements in 80 Patients with Hirschsprung Disease (Using multiplex ligation‐dependent probe amplification)

Analysis of RET, ZEB2, EDN3 and GDNF Genomic Rearrangements in 80 Patients with Hirschsprung... Hirschsprung disease (HSCR) is transmitted in a complex pattern of inheritance and is mostly associated with variants in the RET proto‐oncogene. However, RET mutations are only identified in 15–20% of sporadic HSCR cases and solely in 50% of the familial cases. Since genomic rearrangements in particularly sensitive areas of the RET proto‐oncogene and/or associated genes may account for the HSCR phenotype in patients without other detectable RET variants, the aim of the present study was to identify rearrangements in the coding sequence of RET as well as in three HSCR‐associated genes (ZEB2, EDN3 and GDNF) in HSCR patients by using Multiplex Ligation‐dependent Probe Amplification (MLPA). We have screened 80 HSCR patients for genomic rearrangements in RET, ZEB2, EDN3 and GDNF and did not identify any deletion or amplification in these four genes in all patients. We conclude that genomic rearrangements in RET are rare and were not responsible for the HSCR phenotype in individuals without identifiable germline RET variants in our group of patients, yet this possibility cannot be excluded altogether because the confidence to identify variation in at least two percent of the individuals was only 95%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annals of Human Genetics Wiley

Analysis of RET, ZEB2, EDN3 and GDNF Genomic Rearrangements in 80 Patients with Hirschsprung Disease (Using multiplex ligation‐dependent probe amplification)

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References (32)

Publisher
Wiley
Copyright
Copyright © 2009 Wiley Subscription Services
ISSN
0003-4800
eISSN
1469-1809
DOI
10.1111/j.1469-1809.2008.00503.x
pmid
19183406
Publisher site
See Article on Publisher Site

Abstract

Hirschsprung disease (HSCR) is transmitted in a complex pattern of inheritance and is mostly associated with variants in the RET proto‐oncogene. However, RET mutations are only identified in 15–20% of sporadic HSCR cases and solely in 50% of the familial cases. Since genomic rearrangements in particularly sensitive areas of the RET proto‐oncogene and/or associated genes may account for the HSCR phenotype in patients without other detectable RET variants, the aim of the present study was to identify rearrangements in the coding sequence of RET as well as in three HSCR‐associated genes (ZEB2, EDN3 and GDNF) in HSCR patients by using Multiplex Ligation‐dependent Probe Amplification (MLPA). We have screened 80 HSCR patients for genomic rearrangements in RET, ZEB2, EDN3 and GDNF and did not identify any deletion or amplification in these four genes in all patients. We conclude that genomic rearrangements in RET are rare and were not responsible for the HSCR phenotype in individuals without identifiable germline RET variants in our group of patients, yet this possibility cannot be excluded altogether because the confidence to identify variation in at least two percent of the individuals was only 95%.

Journal

Annals of Human GeneticsWiley

Published: Jan 1, 2009

Keywords: ; ; ;

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