Is Breast Cancer Hereditary. But certain mutations in the brca1 and brca2 genes prevent them from working properly so that if you inherit one of these mutations you are more. Hereditary breast and ovarian cancer.
4 in addition mutation carriers who have already been diagnosed with cancer have. Most inherited cases of breast cancer are associated with mutations in two genes. But certain mutations in the brca1 and brca2 genes prevent them from working properly so that if you inherit one of these mutations you are more.
Approximately seven percent of breast cancer cases are caused by mutations in the brca1 or brca2 genes.
Learn more about genetic mutations linked to breast cancer. In hereditary breast cancer the way that cancer risk is inherited depends on the gene involved. In normal cells these genes help make proteins that repair damaged dna. For example mutations in the brca1 and brca2 genes are inherited in an autosomal dominant pattern which means one copy of the altered gene in each cell is sufficient to increase a person s chance of developing cancer.
