Assessing the risk of hereditary breast cancer

Breast cancer is the most common cancer among women. In nearly 30% of all cases, a member of the breast cancer patient’s extended family also has breast cancer. This may be coincidental or due to hereditary susceptibility.

According to estimates, a single gene mutation that runs in the family underlies approximately 5–10% of all breast cancer cases. The most common form of such mutations are BRCA gene defects.

Indications of hereditary breast cancer include:

  • Breast cancer in a very young person
  • Multiple cancers in one person
  • Breast cancer in both breasts
  • Incidences of breast cancer and/or ovarian cancer in close kin

How can breast cancer heredity be examined?

How can the heredity of cancer be examined if you have a nagging doubt and have observed some of the indications mentioned above? At Docrates Cancer Center, we provide two alternative paths. A sensible approach is to discuss the cancer cases in your family with a specialist in medical genetics. If the situation seems to indicate the chance of hereditary breast cancer, a genetic test to investigate heredity will be recommended. The test is best suited for people who have actually already suffered from cancer. If a genetic defect is discovered, efforts will be made to identify all the carriers of the defective gene in the family. Even if a family shows hereditary susceptibility to cancer, it does not mean that all family members have inherited it.

Docrates Cancer Center can conduct an investigation of the heredity of breast cancer. People who are worried about their potential hereditary risk of contracting cancer can consult Docrates Specialist in Clinical Genetics Helena Kääriäinen.

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