Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)

<p>Abstract</p> <p>Background</p> <p><it>TP53 </it>is an attractive candidate for modifying age of onset (AO) in Huntington disease (HD): The amino-terminus of the mutated huntingtin (htt) exon 1 translation product has functional properties which may affect...

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Main Authors: Andrich Jürgen, Saft Carsten, Kraus Peter H, Arning Larissa, Epplen Jörg T
Format: Article
Language:English
Published: BMC 2005-10-01
Series:BMC Medical Genetics
Online Access:http://www.biomedcentral.com/1471-2350/6/35
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author Andrich Jürgen
Saft Carsten
Kraus Peter H
Arning Larissa
Epplen Jörg T
author_facet Andrich Jürgen
Saft Carsten
Kraus Peter H
Arning Larissa
Epplen Jörg T
author_sort Andrich Jürgen
collection DOAJ
description <p>Abstract</p> <p>Background</p> <p><it>TP53 </it>is an attractive candidate for modifying age of onset (AO) in Huntington disease (HD): The amino-terminus of the mutated huntingtin (htt) exon 1 translation product has functional properties which may affect critically the TP53 pathway in HD neurons. The pathogenic domain of mutant htt interacts with nuclear transcription factors, and it potentially modulates TP53-induced transcriptional events. A single nucleotide polymorphism (SNP) resulting in the R72P exchange in TP53 protein might modulate the variation in AO. In addition, also the R196K replacement in human caspase activated DNase (<it>hCAD</it>) may theoretically affect the AO.</p> <p>Methods</p> <p>We have genotyped the polymorphisms R72P and R196K in a well established cohort of 167 unrelated HD patients.</p> <p>Results</p> <p>The expanded CAG repeat explained 30.8% of the variance in AO. Adding the genotypes of the SNPs investigated did not affect the variance of the AO variance explained.</p> <p>Conclusion</p> <p>In this replication study, no association was found explaining a significant amount of the variability in AO of HD thus contradicting a recent report.</p>
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spelling doaj.art-6cd29abc83a74967aa4821caaa47425c2022-12-21T20:18:19ZengBMCBMC Medical Genetics1471-23502005-10-01613510.1186/1471-2350-6-35Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)Andrich JürgenSaft CarstenKraus Peter HArning LarissaEpplen Jörg T<p>Abstract</p> <p>Background</p> <p><it>TP53 </it>is an attractive candidate for modifying age of onset (AO) in Huntington disease (HD): The amino-terminus of the mutated huntingtin (htt) exon 1 translation product has functional properties which may affect critically the TP53 pathway in HD neurons. The pathogenic domain of mutant htt interacts with nuclear transcription factors, and it potentially modulates TP53-induced transcriptional events. A single nucleotide polymorphism (SNP) resulting in the R72P exchange in TP53 protein might modulate the variation in AO. In addition, also the R196K replacement in human caspase activated DNase (<it>hCAD</it>) may theoretically affect the AO.</p> <p>Methods</p> <p>We have genotyped the polymorphisms R72P and R196K in a well established cohort of 167 unrelated HD patients.</p> <p>Results</p> <p>The expanded CAG repeat explained 30.8% of the variance in AO. Adding the genotypes of the SNPs investigated did not affect the variance of the AO variance explained.</p> <p>Conclusion</p> <p>In this replication study, no association was found explaining a significant amount of the variability in AO of HD thus contradicting a recent report.</p>http://www.biomedcentral.com/1471-2350/6/35
spellingShingle Andrich Jürgen
Saft Carsten
Kraus Peter H
Arning Larissa
Epplen Jörg T
Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)
BMC Medical Genetics
title Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)
title_full Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)
title_fullStr Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)
title_full_unstemmed Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)
title_short Age at onset of Huntington disease is not modulated by the R72P variation in TP53 and the R196K variation in the gene coding for the human caspase activated DNase (hCAD)
title_sort age at onset of huntington disease is not modulated by the r72p variation in tp53 and the r196k variation in the gene coding for the human caspase activated dnase hcad
url http://www.biomedcentral.com/1471-2350/6/35
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