A biomarker is a molecule, often a protein, found in blood, body fluid, or tissue that represents normal or abnormal cell functioning, and therefore the presence of a condition or disease.
Tumor biomarkers are substances produced by tumor cells or by other tissues in response to cancer. Tumor biomarkers found in tumor tissue, blood or urine, or other body fluids inform doctors about the characteristics of an individual’s tumor to help them make informed decisions about the value of possible treatments. New tests, called assays, are being developed to help identify and measure biomarkers
The identification of tumor biomarkers is the first step in personalizing medicine. Many terms are being used for biomarkers, including: signature markers, molecule markers, tumor markers, and genetic markers.
To learn more about biomarkers
Click here for examples of biomarker tests and associated therapies.