Most cases of breast cancer are not caused by inherited genetic factors. These cancers are associated with somatic mutations in breast cells that are acquired during a person's lifetime, and they do not cluster in families. In hereditary breast cancer, the way that cancer risk is inherited depends on the gene involved.
Most inherited cases of breast cancer are associated with mutations in two genes: BRCA1 (BReast CAncer gene one) and BRCA2 (BReast CAncer gene two).. Women who are diagnosed with breast cancer and have a BRCA1 or BRCA2 mutation often have a family history of breast cancer, ovarian cancer, and other cancers.
Learn all about the genetic factors that can put you at a higher risk for breast cancer, and discover whether you should consider genetic testing.
Read about inherited gene mutations that increase breast cancer risk.. BRCA1/
Genetics and Breast Cancer. What are genes? Every cell in your body contains genes. Genes contain the blueprints (genetic code) for your body. For instance .
Learn more about breast cancer in families (hereditary breast cancer), genes, including BRCA, and risk factors in relation to being diagnosed with breast cancer.
Learn more about genetics and breast cancer, the risk factors, what's meant by a family history, how it can affect risk, inherited genes and what you can do.