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The Breast Cancer Gene - Are You At Risk?

 

BRCA1 and BRCA2 are tumor suppressor genes. Mutations in either of these two genes have been linked to an increased risk of breast and ovarian cancer.

The BRCA gene (often known as "the breast cancer gene") has been in the news a lot lately, since Angelina Jolie revealed in her New York Times op-ed that she has a BRCA1 gene mutation and had undergone a double mastectomy.

So how do you know if you should get tested?

There are several established criteria for BRCA genetic testing, as well as a few key warning signs that should prompt a genetic counseling evaluation.

“BRCA1 and BRCA2 are tumor suppressor genes. Mutations in either of these two genes have been linked to an increased risk of breast and ovarian cancer,” says Laura Rebek, Oncology Genetics Risk Counselor at Columbia St. Mary's. “Women in the general population have about a 12 percent lifetime risk for breast cancer – that risk jumps to as high as 80 percent with the BRCA mutation. For ovarian cancer, the risk jumps from 1.4 percent to upwards of 40 percent.”

But it’s not just women – men with these mutations have an increased risk of breast cancer (yes, men can get breast cancer), as well as pancreatic and early-onset prostate cancer.

Women of Ashkenazi Jewish descent (those who hail from central or eastern Europe) carry the BRCA1 or 2 mutations in far greater frequency than the rest of the population. After that, the primary red flag is personal and/or family history. If you are of Ashkenazi Jewish descent, and if you have a personal history of breast or ovarian cancer, a first-degree relative (mother or sibling) or two second-degree relatives (grandparent or aunt) who have been diagnosed with breast or ovarian cancer, you should strongly consider getting tested.

For those not of Ashkenazi Jewish descent, a worrisome family history would be a personal history of breast cancer diagnosed under age 50 or ovarian cancer at any age, two first-degree relatives under the age of 50, or three or more first- or second-degree relatives of any age diagnosed with breast cancer, and any male breast cancer or ovarian cancer in a close relative.

A genetics counselor can help you decide if you should get tested.

The test itself is simple enough – all it takes is a blood sample – and results usually take a few weeks to come back. However, the test can be expensive, so people considering getting tested should check to make sure their insurance will cover it. Most do.

  

 To inquire about BRCA gene screening, call our Oncology Genetics Risk Counselor at 414-298-7265.

To schedule a mammogram at one of our Breast Health Centers, click HERE.

So what should you do if the test comes back positive?

There are several options available to help manage your risk. The first and most important step is surveillance – for breast cancer, that means yearly mammograms, breast MRIs, and monthly self-exams beginning by age 25. Screening for ovarian cancer includes transvaginal ultrasounds and blood tests. Unfortunately, ovarian cancer screening is not consistently reliable in detecting ovarian cancer early.

While these screenings won’t actually reduce your cancer risk, regular screenings are essential. The earlier cancer is detected, the better chance you have of treating it successfully.

“Another option is surgery – the removal of your breasts (a bilateral mastectomy, which is what Jolie recently had done) significantly reduces breast cancer risk,” says Rebek. “Women who are BRCA-positive are recommended to have their fallopian tubes and ovaries removed (a salpingo-oophorectomy) between ages 35 and 40, or once childbearing is completed.”

While these surgeries drastically reduce one’s risk of developing cancer, they do not entirely eliminate it. So even if you have surgery, you should still receive regular screenings.

There are also medications that have been shown to reduce the risk of breast cancer in those with the BRCA1 or 2 mutations – but clinical testing is still limited. Of course, any decision to start a course of medication should be made in consultation with your doctor or a medical oncologist.

When it comes to cancer, knowledge is power. Knowing your risk and taking appropriate preventative action offers the best hope one has to successfully battle a potential cancer diagnosis.

Having a BRCA mutation is not a death sentence; it’s an opportunity to take control of your health.

Columbia St. Mary’s treats more breast cancer patients than any other area hospital. We're a destination of choice throughout southeastern Wisconsin because women of all ages facing a breast cancer diagnosis know that at Columbia St. Mary’s, they will get the most specialized diagnostic approaches, state-of-the-art treatment options, a care plan that is easy to navigate, and a team of compassionate caregivers who treat every part of their health – their body, mind and spirit. 

You can help CSM’s team of breast health experts care for the women of our community with a gift to our Breast Health Program. Your gift will fund the most advanced medical equipment and amenities that create the caring and comforting environment of the Van Dyke Habler Center for Women’s Imaging.

 

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