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Is Polycythaemia Vera Genetic?
- Heritability
- ~15%
- Inheritance
- multifactorial
- Key genes
- JAK2
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Polycythaemia vera is caused by an acquired JAK2 mutation in most cases. Rare familial forms with germline variants in the JAK2 signalling pathway exist.
How Genetic Is Polycythaemia Vera?
Genetics plays a meaningful role in Polycythaemia Vera, with heritability estimated at around 15%. However, environmental factors — including diet, lifestyle, and exposure — also significantly influence risk.
Key genes associated with Polycythaemia Vera: JAK2. 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 Polycythaemia Vera?
Family history does matter. Having close relatives with Polycythaemia Vera can increase your personal risk, though it is not deterministic. Maintaining a healthy lifestyle and regular screening remain important regardless of family background.
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