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Is Familial Adenomatous Polyposis Genetic?
Is Familial Adenomatous Polyposis hereditary? Here's what the research says about inherited risk.
- Heritability
- ~95%
- Inheritance
- autosomal-dominant
- Key genes
- APC
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FAP is a hereditary condition causing hundreds to thousands of polyps in the colon and rectum. Without treatment virtually all affected individuals develop colorectal cancer.
How Genetic Is Familial Adenomatous Polyposis?
Familial Adenomatous Polyposis has a strong genetic basis. Research estimates heritability at approximately 95%, meaning genetic factors account for the majority of variation in whether individuals develop this condition.
Key genes associated with Familial Adenomatous Polyposis: APC. 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 Familial Adenomatous Polyposis?
Yes — family history is one of the strongest predictors of Familial Adenomatous Polyposis. If a first-degree relative (parent, sibling, or child) has been diagnosed, your own risk may be significantly elevated. Discussing your family history with a healthcare provider or genetic counsellor is strongly recommended.
Frequently Asked Questions
Is Familial Adenomatous Polyposis genetic?
This condition has a strong genetic basis. Studies suggest heritability of approximately 95%. Key genes involved include APC.
Can a DNA test reveal my risk of Familial Adenomatous Polyposis?
Yes — DNA tests such as CircleDNA's Premium Test include reports on Familial Adenomatous Polyposis risk based on your genetic variants.
Does family history matter for Familial Adenomatous Polyposis?
Yes — family history is one of the strongest predictors of Familial Adenomatous Polyposis. If a first-degree relative has been diagnosed, your own risk may be significantly elevated.
Is Familial Adenomatous Polyposis hereditary, meaning it's passed directly from parent to child?
Familial Adenomatous Polyposis follows a autosomal-dominant 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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