Advances in the Genetics of Hypertension: The Effect of Rare Variants

Worldwide, hypertension still represents a serious health burden with nine million people dying as a consequence of hypertension-related complications. Essential hypertension is a complex trait supported by multifactorial genetic inheritance together with environmental factors. The heritability of b...

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Main Authors: Alessia Russo, Cornelia Di Gaetano, Giovanni Cugliari, Giuseppe Matullo
Format: Article
Language:English
Published: MDPI AG 2018-02-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:http://www.mdpi.com/1422-0067/19/3/688
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author Alessia Russo
Cornelia Di Gaetano
Giovanni Cugliari
Giuseppe Matullo
author_facet Alessia Russo
Cornelia Di Gaetano
Giovanni Cugliari
Giuseppe Matullo
author_sort Alessia Russo
collection DOAJ
description Worldwide, hypertension still represents a serious health burden with nine million people dying as a consequence of hypertension-related complications. Essential hypertension is a complex trait supported by multifactorial genetic inheritance together with environmental factors. The heritability of blood pressure (BP) is estimated to be 30–50%. A great effort was made to find genetic variants affecting BP levels through Genome-Wide Association Studies (GWAS). This approach relies on the “common disease–common variant” hypothesis and led to the identification of multiple genetic variants which explain, in aggregate, only 2–3% of the genetic variance of hypertension. Part of the missing genetic information could be caused by variants too rare to be detected by GWAS. The use of exome chips and Next-Generation Sequencing facilitated the discovery of causative variants. Here, we report the advances in the detection of novel rare variants, genes, and/or pathways through the most promising approaches, and the recent statistical tests that have emerged to handle rare variants. We also discuss the need to further support rare novel variants with replication studies within larger consortia and with deeper functional studies to better understand how new genes might improve patient care and the stratification of the response to antihypertensive treatments.
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spelling doaj.art-407b70fdb5f84821b141c350e1276aa82022-12-22T03:36:19ZengMDPI AGInternational Journal of Molecular Sciences1422-00672018-02-0119368810.3390/ijms19030688ijms19030688Advances in the Genetics of Hypertension: The Effect of Rare VariantsAlessia Russo0Cornelia Di Gaetano1Giovanni Cugliari2Giuseppe Matullo3Department of Medical Sciences, University of Turin, 10126 Turin, ItalyDepartment of Medical Sciences, University of Turin, 10126 Turin, ItalyDepartment of Medical Sciences, University of Turin, 10126 Turin, ItalyDepartment of Medical Sciences, University of Turin, 10126 Turin, ItalyWorldwide, hypertension still represents a serious health burden with nine million people dying as a consequence of hypertension-related complications. Essential hypertension is a complex trait supported by multifactorial genetic inheritance together with environmental factors. The heritability of blood pressure (BP) is estimated to be 30–50%. A great effort was made to find genetic variants affecting BP levels through Genome-Wide Association Studies (GWAS). This approach relies on the “common disease–common variant” hypothesis and led to the identification of multiple genetic variants which explain, in aggregate, only 2–3% of the genetic variance of hypertension. Part of the missing genetic information could be caused by variants too rare to be detected by GWAS. The use of exome chips and Next-Generation Sequencing facilitated the discovery of causative variants. Here, we report the advances in the detection of novel rare variants, genes, and/or pathways through the most promising approaches, and the recent statistical tests that have emerged to handle rare variants. We also discuss the need to further support rare novel variants with replication studies within larger consortia and with deeper functional studies to better understand how new genes might improve patient care and the stratification of the response to antihypertensive treatments.http://www.mdpi.com/1422-0067/19/3/688essential hypertensionblood pressuregenome-wide association studiesexome microarraynext-generation sequencingrare variantsrare-variants association testingburden testsequence kernel association test
spellingShingle Alessia Russo
Cornelia Di Gaetano
Giovanni Cugliari
Giuseppe Matullo
Advances in the Genetics of Hypertension: The Effect of Rare Variants
International Journal of Molecular Sciences
essential hypertension
blood pressure
genome-wide association studies
exome microarray
next-generation sequencing
rare variants
rare-variants association testing
burden test
sequence kernel association test
title Advances in the Genetics of Hypertension: The Effect of Rare Variants
title_full Advances in the Genetics of Hypertension: The Effect of Rare Variants
title_fullStr Advances in the Genetics of Hypertension: The Effect of Rare Variants
title_full_unstemmed Advances in the Genetics of Hypertension: The Effect of Rare Variants
title_short Advances in the Genetics of Hypertension: The Effect of Rare Variants
title_sort advances in the genetics of hypertension the effect of rare variants
topic essential hypertension
blood pressure
genome-wide association studies
exome microarray
next-generation sequencing
rare variants
rare-variants association testing
burden test
sequence kernel association test
url http://www.mdpi.com/1422-0067/19/3/688
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AT corneliadigaetano advancesinthegeneticsofhypertensiontheeffectofrarevariants
AT giovannicugliari advancesinthegeneticsofhypertensiontheeffectofrarevariants
AT giuseppematullo advancesinthegeneticsofhypertensiontheeffectofrarevariants