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Is Breast Cancer Genetic?
- Heritability
- ~80%
- Inheritance
- autosomal-dominant
- Key genes
- BRCA1,BRCA2,PALB2,CHEK2
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Breast cancer is the most common cancer in women worldwide. Hereditary forms account for 5–10% of cases and are strongly linked to mutations in BRCA1 and BRCA2 genes.
How Genetic Is Breast Cancer?
Breast Cancer has a strong genetic basis. Research estimates heritability at approximately 80%, meaning genetic factors account for the majority of variation in whether individuals develop this condition.
Key genes associated with Breast Cancer: BRCA1,BRCA2,PALB2,CHEK2. 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 Breast Cancer?
Yes — family history is one of the strongest predictors of Breast Cancer. 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.
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