Learn more about inherited gene mutations and breast cancer risk. Testing for multiple gene mutations (panel testing) In the past, breast cancer genetic testing only checked for mutations in BRCA1 and BRCA2 genes. Now, it’s common to be tested for BRCA1/2 along with multiple other high-risk gene mutations. This is called panel testing or. Because of the increased risk of a second breast cancer among BRCA1 and BRCA2 mutation carriers, some doctors recommend that women with early-onset breast cancer and those whose family history is consistent with a mutation in one of these genes have genetic testing when breast cancer is diagnosed.
For people who are already diagnosed with a cancer, results of genetic testing may help them make decisions about their treatment and understand their risk for other cancers. Genetic testing provides an opportunity for family members to learn about their own cancer risks.