Genome-Wide Association Studies Revealing the Heritability of Common Atrial Fibrillation: Is Bigger Always Better?

Sebastian Clauss, Moritz F Sinner, Stefan Kääb
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引用次数: 1

Abstract

In this issue of Circulation Cardiovascular Genetics, Weng et al1 present an interesting study evaluating the heritability of atrial fibrillation (AF). See Article by Weng et al AF is the most common arrhythmia worldwide, and substantial efforts have been made to elucidate mechanisms underlying its onset and progression.2 Over the past years, a growing body of evidence demonstrated that AF is heritable. Besides rare genetic mutations with strong effects and a clear phenotype, such as gain- or loss-of-function mutations in ion channel genes,3–5 there are common genetic variants or single nucleotide polymorphisms that have been shown to be associated with AF although a causal mechanistic role has not been identified for most of the risk variants.6–11 Several studies tried to evaluate the degree of heritability by family-based or population-based studies, such as the Danish twin study that reported an AF heritability of 62% or the Framingham Heart Study that showed a 40% risk to develop AF if a first-degree relative is affected.12,13 Those numbers raised some concerns because studies performed in families might not adequately mirror the situation in the general population and might hence overestimate the true heritability. Also, it is in contrast to the experience from daily clinical practice where AF is predominantly seen in older patients with comorbidities, that is, in patients with several likely causes for AF, making a genetic cause of the disease less likely. It, therefore, remained unclear to which degree AF can be …
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全基因组关联研究揭示了常见心房颤动的遗传性:越大越好吗?
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Circulation: Cardiovascular Genetics
Circulation: Cardiovascular Genetics CARDIAC & CARDIOVASCULAR SYSTEMS-GENETICS & HEREDITY
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6-12 weeks
期刊介绍: Circulation: Genomic and Precision Medicine considers all types of original research articles, including studies conducted in human subjects, laboratory animals, in vitro, and in silico. Articles may include investigations of: clinical genetics as applied to the diagnosis and management of monogenic or oligogenic cardiovascular disorders; the molecular basis of complex cardiovascular disorders, including genome-wide association studies, exome and genome sequencing-based association studies, coding variant association studies, genetic linkage studies, epigenomics, transcriptomics, proteomics, metabolomics, and metagenomics; integration of electronic health record data or patient-generated data with any of the aforementioned approaches, including phenome-wide association studies, or with environmental or lifestyle factors; pharmacogenomics; regulation of gene expression; gene therapy and therapeutic genomic editing; systems biology approaches to the diagnosis and management of cardiovascular disorders; novel methods to perform any of the aforementioned studies; and novel applications of precision medicine. Above all, we seek studies with relevance to human cardiovascular biology and disease.
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