Breast Cancer Awareness Month 2021

Knowledge is Power: The Importance of Biomarker Testing and Learning From Each Other

Breast Cancer Awareness Month (BCAM) is synonymous with education and exchanging information about the disease, its impact and ways to detect and manage it. The month is an important time to help people along their cancer journey, and the educational resources developed in recent years have potentially contributed to improved outcomes for many patients with breast cancer.

This BCAM, we are working to amplify the awareness-building efforts of the advocacy community while turning the education and information lens on a vital aspect of the breast cancer journey: biomarker testing. It is used to help detect cancer, can predict how fast it will grow and spread and can help doctors identify the best treatment for a patient or monitor their response to a therapy.1

Sharing Stories to Reduce Confusion
Biomarker testing might seem confusing or intimidating for some patients. As part of our effort to elevate biomarker testing education, our advocacy team connected with patients to understand their perspectives on testing and the role these barriers may have played in their respective journeys.

Irasema, a young woman impacted by both gastric and breast cancer, shares what she wants others like her to know about the test: “When I was first diagnosed with gastric cancer, I was skittish about biomarker testing and unsure of the benefits that would come with it, especially when I was so anxious to get treated as quickly as possible,” said Irasema.“ But it proved useful, as the findings not only taught me about my specific cancer, but helped me become more comfortable talking with my care team about my disease. When I was later diagnosed with early stage breast cancer, I was much more proactive, and had a conversation with my doctor right away to make sure biomarker testing was part of our plan. I share my story with the hope that others like me remember that even when things seem overwhelming, knowledge is power.”

Supporting Biomarker Testing Awareness Efforts this Month…and Beyond
Education is a vital part of the work we do with the breast cancer community, including our advocacy partners and patients, and will continue to help guide us in our efforts on behalf of people living with breast cancer around the world. 

If you’re interested in learning more, follow us on Twitter or LinkedIn!

What You Need To Know About Biomarker Testing

  • What are biomarkers?
    Biomarkers are biological molecules found in the blood or tissue that are an indicator of a normal or abnormal process in the body.2 Cancer biomarkers can include proteins, gene mutations (changes), gene rearrangements, extra copies of genes, missing genes, other molecules.3
  • What is biomarker testing?
    Biomarker testing (sometimes also called tumor testing, molecular testing, and genomic 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.3
  • How do biomarker tests help in cancer treatment?
    Biomarker testing may help patients and their doctor select a cancer treatment. Some cancer treatments, including targeted therapies and immunotherapies, may only work for people whose cancers have certain biomarkers. People with cancer that for example has certain genetic changes in the HER2 or EGFR gene can get treatments that targets those changes.3
  • How is biomarker testing done?
    Biomarker testing is done by obtaining a small amount of tissue (called a biopsy) from a patient’s tumor, or by drawing a blood sample. The tissue or blood sample is sent to a lab for testing which can provide information about the patient’s specific tumor makeup.3
  • Are there different types of biomarker tests?
    Yes, there are many types of biomarker tests. Most biomarker tests used to select cancer treatment look for genetic markers. But some look for proteins or other kinds of markers. Some tests check for one certain biomarker. Others check for many biomarkers at the same time and may be called multigene tests or panel tests.3
  • What do the results of biomarker tests mean?
    The results of a biomarker test could show that a patient’s cancer has a certain biomarker that may be targeted by a known therapy and work to treat that cancer. The results could also show that a patient’s cancer has a biomarker that may prevent a certain therapy from working. This information could spare the patient from getting a treatment that won’t help.

1 National Cancer Institute. Biomarker Testing for Cancer Treatment Available at: Last accessed September 2021.
2 Goosens N, et al. Transl Cancer Res. 2015 ;4:256-269.

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