Dokumentenart: | Artikel | ||||
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Titel eines Journals oder einer Zeitschrift: | European Heart Journal | ||||
Verlag: | Oxford Univ. Press | ||||
Ort der Veröffentlichung: | OXFORD | ||||
Band: | 42 | ||||
Nummer des Zeitschriftenheftes oder des Kapitels: | 20 | ||||
Seitenbereich: | S. 2000-2011 | ||||
Datum: | 2021 | ||||
Institutionen: | Medizin > Lehrstuhl für Innere Medizin II Medizin > Institut für Epidemiologie und Präventivmedizin > Lehrstuhl für Genetische Epidemiologie | ||||
Identifikationsnummer: |
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Stichwörter / Keywords: | Dilated cardiomyopathy; Heart failure; GWAS; Imputation; 4C-sequencing; Genetic risk score | ||||
Dewey-Dezimal-Klassifikation: | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin | ||||
Status: | Veröffentlicht | ||||
Begutachtet: | Ja, diese Version wurde begutachtet | ||||
An der Universität Regensburg entstanden: | Zum Teil | ||||
Dokumenten-ID: | 56763 |
Zusammenfassung
Aims: Our objective was to better understand the genetic bases of dilated cardiomyopathy (DCM), a leading cause of systolic heart failure. Methods and results: We conducted the largest genome-wide association study performed so far in DCM, with 2719 cases and 4440 controls in the discovery population. We identified and replicated two new DCM-associated loci on chromosome 3p25.1 [lead ...
Zusammenfassung
Aims: Our objective was to better understand the genetic bases of dilated cardiomyopathy (DCM), a leading cause of systolic heart failure. Methods and results: We conducted the largest genome-wide association study performed so far in DCM, with 2719 cases and 4440 controls in the discovery population. We identified and replicated two new DCM-associated loci on chromosome 3p25.1 [lead single-nucleotide polymorphism (SNP) rs62232870, P = 8.7 x 10(-11) and 7.7 x 10(-4) in the discovery and replication steps, respectively] and chromosome 22q11.23 (lead SNP rs7284877, P = 3.3 x 10(-8) and 1.4 x 10(-3) in the discovery and replication steps, respectively), while confirming two previously identified DCM loci on chromosomes 10 and 1, BAG3 and HSPB7. A genetic risk score constructed from the number of risk alleles at these four DCM loci revealed a 3-fold increased risk of DCM for individuals with 8 risk alleles compared to individuals with 5 risk alleles (median of the referral population). In silico annotation and functional 4C-sequencing analyses on iPSC-derived cardiomyocytes identify SLC6A6 as the most likely DCM gene at the 3p25.1 locus. This gene encodes a taurine transporter whose involvement in myocardial dysfunction and DCM is supported by numerous observations in humans and animals. At the 22q11.23 locus, in silico and data mining annotations, and to a lesser extent functional analysis, strongly suggest SMARCB1 as the candidate culprit gene. Conclusion: This study provides a better understanding of the genetic architecture of DCM and sheds light on novel biological pathways underlying heart failure. [GRAPHICS]
Metadaten zuletzt geändert: 28 Jun 2024 04:52