Skip to main content
An official website of the United States government
Español
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

MammaPrint

(MA-muh-print)
A lab test that is used to help predict whether breast cancer will come back or spread to other parts of the body. The test looks at the activity level of 70 different genes in breast cancer tissue of people with early-stage (stage I, II, or IIIA) invasive breast cancer that is less than 5 cm and is either node-negative or has spread to 1 to 3 lymph nodes. If the test shows that there is a high risk that the cancer will spread or come back, treatment with chemotherapy may be needed to lower the risk. Also called 70-gene signature.
Search NCI's Dictionary of Cancer Terms