Genetic and Biomarker Testing
Genetic testing for an inherited mutation (also called “germline genetic testing”) looks at DNA found in blood or saliva samples to find mutations that can cause diseases such as cancer. Genetic testing can help people understand their risk for cancer, help them make medical decisions, and take steps to lower their cancer risk or detect cancer early. For people already diagnosed with cancer, genetic testing can help people make medical decisions about how to best treat their cancer.
Biomarker testing is a way to look for genes, proteins, and other substances (called biomarkers or tumor markers) that can provide information about cancer. Each person’s cancer has a unique pattern of biomarkers. Some biomarkers affect how certain cancer treatments work. Biomarker testing may help you and your doctor choose a cancer treatment for you.