Knowing whether ovarian cancer is hereditary can help you better understand your risk, especially if you or someone in your family has been diagnosed. Understanding the role genetics may play can also empower you to make informed decisions about prevention, screening, and personalized care or holistic treatment for ovarian cancer.

Research shows that inherited mutations, including BRCA1 and BRCA2, are found in roughly 15 to 25 percent of ovarian cancer cases, while the majority develop from changes that occur over time.1

This guide breaks down the difference between hereditary and sporadic ovarian cancer and family patterns that may raise concern. We’ll also discuss how BRCA mutations affect risk, what genetic testing involves, and questions to bring to your healthcare team.

Hereditary vs. Sporadic Ovarian Cancer

Is ovarian cancer genetic? In most cases, ovarian cancers develop from cellular changes that accumulate throughout a person’s lifetime. This is what the American Cancer Society identifies as acquired mutations.2 These are called sporadic cases.

Hereditary ovarian cancer stems from gene mutations passed down from a parent and present from birth. Inheriting a mutation does not mean you will develop ovarian cancer. It means the body starts with one less layer of protection against abnormal cell growth, thereby elevating the lifetime risk compared to the general population.

Does Ovarian Cancer Run in Families?

Because cancer is relatively common, multiple diagnoses within one family can sometimes occur by coincidence. However, the National Cancer Institute notes that increased incidence of these cancers among women with a family history may suggest an inherited genetic component worth exploring with a healthcare provider.3

A family history of ovarian cancer does not automatically indicate a hereditary mutation. Many families with ovarian cancer cases have no identifiable genetic link.

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Family Patterns That May Raise Concern

Healthcare providers typically watch for specific indicators when evaluating hereditary risk:

    • Multiple relatives affected: Several family members on the same side are diagnosed with ovarian, breast, or related cancers, which often leads families to research how to prevent breast cancer and ovarian cancer
    • Younger age at diagnosis: A relative diagnosed before age 50
    • Multiple cancer types: A family member who developed both breast and ovarian cancer
    • Known family mutations: A confirmed BRCA or other hereditary mutation in the family
    • Ashkenazi Jewish ancestry: The CDC identifies this Central or Eastern European population as having higher BRCA mutation prevalence, particularly when combined with any family history of breast or ovarian cancer4

Recognizing the early warning signs of ovarian cancer, such as persistent unusual bloating, sometimes prompts initial conversations about risk. Learn more about ovarian cancer bloating and when to seek evaluation.

BRCA and Ovarian Cancer Risk

Several genes influence hereditary ovarian cancer risk, with the breast cancer gene mutations, such as BRCA, being the most widely recognized.

BRCA1 vs BRCA2

BRCA1 and BRCA2 are tumor suppressor genes that help repair damaged DNA. When either gene carries an inherited mutation, the body’s ability to correct cellular errors becomes compromised.

Both mutations carry increased risk, though BRCA1 generally carries a higher ovarian cancer risk than BRCA2. The National Cancer Institute estimates that 39% to 58% of BRCA1 carriers and 13% to 29% of BRCA2 carriers will develop ovarian cancer during their lifetime.5 

A genetic counselor can help interpret the meaning of a specific mutation in an individual’s circumstances.

Other Genes Linked to Ovarian Cancer Risk

Additional genes associated with hereditary ovarian cancer include:

  • RAD51C and RAD51D: DNA repair genes that increase ovarian cancer risk when mutated
  • BRIP1 and PALB2: Genes that work with BRCA proteins to maintain genomic stability
  • Lynch syndrome genes: Mutations in mismatch repair genes like MLH1 and MSH2 increase ovarian cancer risk alongside uterine and colorectal cancers

Modern multigene panel testing can simultaneously screen for many of these mutations. The BRCA1/BRCA2 pathogenic variants are associated with ovarian cancer, fallopian tube cancer, and primary peritoneal cancer.6 This means cancers originating in these areas share similar hereditary risk profiles.

Genetic Testing for Ovarian Cancer: What It Means

Genetic testing uses a blood or saliva sample to identify inherited mutations in cancer-associated genes. Testing may be recommended for those diagnosed with ovarian cancer, individuals with significant family history, or those from populations with higher mutation prevalence.

Results fall into three categories:

    • Positive: A disease-causing mutation is identified
    • Negative: No known pathogenic mutation found, though some genetic risk may remain
    • Variant of uncertain significance: A genetic change is identified, but as the National Human Genome Research Institute explains, it is unclear whether that variant is actually connected to a health condition7

What to Prepare Before Genetic Counseling

Gathering information beforehand helps maximize your consultation:

  • Family cancer history: Types of cancer diagnosed and approximate ages at diagnosis from both sides of your family
  • Genetic test results: Any known results from relatives, especially related to BRCA or hereditary cancer markers
  • Personal medical history: Prior diagnoses, biopsies, or ongoing health conditions
  • Medications and supplements: Current prescriptions, over-the-counter medications, or hormone therapies
  • Reproductive history: Age at first menstruation, pregnancies, menopause, or fertility-related factors
  • Previous screenings: Results from ultrasounds, mammograms, CT scans, or other imaging tests

If your family history is incomplete, that is perfectly acceptable. Genetic counselors are trained to work with whatever information you can provide.

Questions to Ask If Ovarian Cancer Runs in Your Family

Walking into appointments prepared helps you feel more in control. Consider asking your provider:

  • What is the difference between Ovarian cyst vs. ovarian cancer?
  • Should I pursue genetic counseling or testing based on my family history?
  • How would test results change my screening plan?
  • Should my siblings or children also consider testing?
  • What options exist if testing reveals I carry a mutation?
  • Are there wellness approaches that may support my overall health?

You can also request a referral to a genetic counselor who specializes in hereditary cancer syndromes.

Begin Holistic Ovarian Cancer Care at ITC

Learning about hereditary risk or coping with a diagnosis of ovarian cancer can feel overwhelming. When exploring how ovarian cancer is treated, many people seek natural, non-invasive treatment approaches as their primary path forward.

Immunity Therapy Center offers individualized alternative cancer treatments designed to effectively address cancer while supporting whole-body wellness. Located in Tijuana, Mexico, ITC provides personalized care tailored to each patient’s unique situation.

Contact our Tijuana cancer center for a free consultation and explore our approach to holistic treatment for ovarian cancer.

 

Sources:

  1. CMS. Quality ID #507: Appropriate Germline Testing for Ovarian Cancer Patients. https://qpp.cms.gov/docs/QPP_quality_measure_specifications/CQM-Measures/2025_Measure_507_MIPSCQM.pdf
  2. American Cancer Society. Causes, Risk Factors, and Prevention of Ovarian Cancer. https://www.cancer.org/cancer/types/ovarian-cancer/causes-risks-prevention.html
  3. National Cancer Institute. Genetics of Breast and Gynecologic Cancers (PDQ®)–Health Professional Version. https://www.cancer.gov/types/breast/hp/breast-ovarian-genetics-pdq
  4. CDC. People at Increased Risk for BRCA Gene Mutations. https://www.cdc.gov/breast-ovarian-cancer-hereditary/risk-factors/index.html
  5. National Cancer Institute. BRCA Gene Changes: Cancer Risk and Genetic Testing. https://www.cancer.gov/about-cancer/causes-prevention/genetics/brca-fact-sheet
  6. National Cancer Institute. BRCA1 and BRCA2: Cancer Risks and Management (PDQ®)–Health Professional Version. https://www.cancer.gov/publications/pdq/information-summaries/genetics/brca-genes-hp-pdq
  7. National Human Genome Research Institute. Variant of Uncertain Significance (VUS). https://www.genome.gov/genetics-glossary/Variant-of-Uncertain-Significance-VUS

 

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