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  2. Family history
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Family history

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Some women are at increased risk of ovarian cancer because they have a strong family history of ovarian cancer or breast cancer.

A strong family history means having several close blood relatives (on the mother’s or father’s side of the family) who have had breast or ovarian cancer, especially if this was diagnosed at an early age.

Some women are at increased risk because a family member is known to have inherited a fault in a gene associated with breast or ovarian cancer

If ovarian cancer is caused by inheriting a faulty gene, this is called hereditary cancer. We all inherit a set of genes from each of our parents. Sometimes there’s a fault in one copy of a gene which stops that gene working properly. This fault is called a mutation. There are several genes for which inherited faults may be involved in the development of breast or ovarian cancer. These are genes which normally prevent a woman developing breast or ovarian cancer.

Two genes associated with ovarian cancer are called BRCA1 and BRCA2. Their names come from the abbreviation of ‘breast cancer one’ and ‘breast cancer two’. If a woman has inherited a fault in one of these genes, she has a high chance of developing ovarian cancer or breast cancer, although it does not mean that she is certain to develop cancer.

Around 5% of all breast cancers and up to 15% of invasive ovarian cancers can be explained by an inherited gene fault in BRCA1 or BRCA2.

There are a number of factors that can impact on a woman’s family history of ovarian cancer.

The Cancer Australia resource Information for women about family history of breast cancer and ovarian cancer helps women to understand their family history of breast or ovarian cancer and can provide an indication of their chance of developing either disease.

Find out more about:

  • Position Statement on genetic testing for women diagnosed with ovarian cancer
  • Genetic testing for women diagnosed with ovarian cancer FAQs;
  • eviQ General practitioner referral guidelines for cancer genetics assessment
  • eviQ Ovarian cancer – referring to genetics
  • Last Updated
  • Relevant Links
updated: 20 April 2021 - 11:48am
Cancer Australia, Epithelial ovarian cancer: understanding your diagnosis and treatment
Cancer Australia, Intimacy and sexuality for women with gynaecological cancer – starting a conversation
Cancer Australia Familial Risk Assesment For Breast and Ovarian Cancer
American Cancer Society, Ovarian cancer
National Cancer Institute (US), Ovarian epithelial, fallopian tube, and primary peritoneal cancer treatment (PDQ®), patient vers
National Cancer Institute (US), Ovarian germ cell tumors treatment (PDQ®), patient version
National Cancer Institute (US), Ovarian low malignant potential tumors treatment (PDQ®), patient version
National Comprehensive Cancer Network (US), NCCN guidelines for patients: ovarian cancer
Australian Cancer Trials

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