Hereditary Breast and Ovarian Cancer syndrome (HBOC) is a well-known hereditary cancer syndrome characterized by early-onset breast cancer as well as ovarian, pancreatic, prostate cancers and/or melanoma. Genetic counseling and testing can help individuals learn more about their cancer risks, and their options for surveillance and risk reduction. Approximately 10% of all cancer is thought to be hereditary.
Anyone with the following risk factors in their personal or family history should consider seeing a certified genetic counselor to learn more about their risks and genetic testing options:
- Breast cancer diagnosed before the age of 50
- Breast cancer that is triple negative (ER-/PR-/Her-2-) and diagnosed before age 60.
- Even one case of ovarian cancer.
- Male breast cancer.
- Personal history of pancreatic or prostate cancer at any age and one case of breast, ovarian pancreatic, or prostate cancer. The prostate cancers in the family should have a Gleason score of ≥7. **
- Multiple HBOC cancers in one person (ex: an individual diagnosed with two breast primaries, with both breast and ovarian or with breast and pancreatic cancer).
- The combination of breast, ovarian, and/or pancreatic cancer on the same side of the family.
- Jewish ancestry in combination with any of the above.
- Jewish ancestry and one case of breast (at any age), ovarian or pancreatic cancer (even in the absence of additional family history).
- Known genetic mutation in the family (e.g. BRCA1, BRCA2).
- A BRCA1/2 mutation found on genetic testing of a tumor sample (known as a somatic mtuation)***
*The risk factors listed above should not be used exclusively to determine candidates for genetic counseling. There are other factors that should be evaluated when determining a person’s risk such as their family size, number of female relatives, prophylactic surgeries and adoption. The above risk factors pertain to HBOC. For a full assessment, risk factors for other hereditary cancer syndromes should also be evaluated.
*Insurance coverage for testing varies and preauthorization is performed after a detailed personal/family history is obtained.
***Added by the NCCN in the 2.2017 update
Photo: Mehmet Pinarci, via Flickr