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Is Atrial Fibrillation Genetic?
Is Atrial Fibrillation hereditary? Here's what the research says about inherited risk.
- Heritability
- ~62%
- Inheritance
- multifactorial
- Key genes
- KCNQ1,SCN5A,PITX2
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Atrial fibrillation is the most common cardiac arrhythmia. Genetic factors play a significant role particularly in early-onset cases.
How Genetic Is Atrial Fibrillation?
Genetics plays a meaningful role in Atrial Fibrillation, with heritability estimated at around 62%. However, environmental factors — including diet, lifestyle, and exposure — also significantly influence risk.
Key genes associated with Atrial Fibrillation: KCNQ1,SCN5A,PITX2. Variants in these genes have been identified through genome-wide association studies (GWAS) and clinical research as influencing susceptibility or severity.
Source: MedlinePlus Genetics
Does Family History Matter for Atrial Fibrillation?
Family history does matter. Having close relatives with Atrial Fibrillation can increase your personal risk, though it is not deterministic. Maintaining a healthy lifestyle and regular screening remain important regardless of family background.
Frequently Asked Questions
Is Atrial Fibrillation genetic?
Genetics plays a role, but environment and lifestyle also contribute. Studies suggest heritability of approximately 62%. Key genes involved include KCNQ1,SCN5A,PITX2.
Can a DNA test reveal my risk of Atrial Fibrillation?
Yes — DNA tests such as CircleDNA's Premium Test include reports on Atrial Fibrillation risk based on your genetic variants.
Does family history matter for Atrial Fibrillation?
Family history does matter for Atrial Fibrillation, though it is not deterministic — lifestyle and screening remain important regardless of family background.
Is Atrial Fibrillation hereditary, meaning it's passed directly from parent to child?
Atrial Fibrillation follows a multifactorial inheritance pattern in cases with a clear genetic cause, though not every case is inherited directly from a parent — some arise from new (de novo) mutations or a combination of genetic and environmental factors.
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- MedlinePlus Genetics
- MedlinePlus Genetics — National Library of Medicine
- CDC Genomics and Precision Health
Last updated: · Reviewed by the 247GeneticCheck editorial team
Content compiled with reference to peer-reviewed genetics literature and testing-provider documentation. This site does not provide medical or genetic counselling advice — always consult a healthcare professional or genetic counsellor before acting on DNA test results.
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