Description. Breast cancer is a disease in which certain cells in the breast become abnormal and multiply These cancers are described as hereditary and are associated with inherited gene mutations. . Inheritance Pattern.
BRCA1 and BRCA2: The most common cause of hereditary breast cancer is an inherited mutation in the BRCA1 or BRCA2 gene. In normal.
About 5% to 10% of breast cancers are thought to be hereditary, caused by abnormal genes passed from parent to child. Most inherited cases of breast cancer are associated with mutations in two genes: BRCA1 (BReast CAncer gene one) and BRCA2 (BReast CAncer gene two).
Learn how gene mutations can affect breast cancer risk, as well as about is helping identify the genes that are responsible for this inherited increased risk.
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.