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If your father, brother, son, or several relatives have had prostate cancer, you may wonder whether you should start screening earlier.
Family history can be an important part of a prostate-cancer risk conversation. It does not predict with certainty who will develop cancer, but it can help determine when it is appropriate to discuss screening, genetic counseling, or both.
This article explains how family history relates to prostate cancer risk, which patterns deserve closer attention, and how to prepare for a more informed conversation with your physician.
Yes. Prostate cancer can run in families, although not every family pattern has one identifiable inherited cause.
The American Cancer Society (ACS) notes that prostate cancer risk is more than doubled for men with a father or brother who has had the disease. Risk is higher when more than one close relative is affected or when a relative was diagnosed at a younger age. Source.
Family history is not the same as a hereditary cancer syndrome. A hereditary cancer syndrome is caused by an inherited gene change that can increase the chance of certain cancers. Some families with multiple prostate cancer diagnoses have such a change; others do not. A clinician or genetic counselor can help distinguish between these possibilities.
A diagnosis at an earlier age may be more informative than one occurring later in life. It is one of several details a clinician may consider alongside the number of affected relatives and the types of cancer seen across the family.
It also matters whether prostate cancer appears alongside cancers associated with inherited cancer syndromes, including breast, ovarian, pancreatic, colorectal, or endometrial cancer. The pattern—not one diagnosis in isolation—provides the most useful context.
When you collect family history, include:
• The type of cancer each relative had
• Their age at diagnosis
• Whether they are related through your mother’s or father’s side
• Any known genetic-test results
• Relatives with more than one primary cancer
Family history can be a reason to discuss screening earlier or more specifically with a physician. The right timing and approach depend on factors such as age, family history, overall health, and other individual risk factors.
Under American Cancer Society recommendations, men at higher risk, including African American men and men with a father or brother diagnosed with prostate cancer before age 65, should discuss screening beginning at age 45. The ACS recommends beginning this discussion at age 40 for men with more than one first-degree relative diagnosed at an early age. Source.
Screening discussions commonly include the prostate-specific antigen (PSA) blood test. A PSA result alone does not diagnose prostate cancer. Your physician can explain benefits, limitations, and follow-up steps in the context of your risk.
Genetic testing for hereditary cancer risk and prostate cancer screening answer different questions.
Hereditary cancer risk testing looks for inherited gene changes present from birth. It may be considered when a personal or family history suggests a hereditary cancer syndrome. A result may help guide screening discussions and may be relevant to genetically-related relatives.
Prostate cancer screening looks for signs that cancer could already be present. The PSA test measures a protein made by prostate cells; an elevated result can have several causes and needs clinical interpretation. Source: National Cancer Institute.
The two approaches can work together. Hereditary cancer risk testing does not replace PSA-based screening, and screening does not tell you whether a hereditary gene change is present.
BRCA1 and BRCA2 are among the genes that may be considered when a family pattern suggests hereditary cancer risk. They are often associated with breast and ovarian cancer, but they can also be relevant to prostate cancer. Genes associated with Lynch syndrome may be considered as well, depending on the family history.
The National Cancer Institute reports that, by age 80, prostate cancer develops in about 7% to 26% of men with a harmful BRCA1 variant and 19% to 61% of men with a harmful BRCA2 variant, compared with about 10.6% of men in the general population. Source.
A genetic counselor can help decide whether testing may be informative, which relative may be best to test first, and what a result could mean for the family.
Consider discussing hereditary cancer-risk assessment with a healthcare professional if your family history includes:
• Multiple relatives with prostate cancer, especially on the same side of the family
• Prostate cancer diagnosed at a younger age
• Prostate cancer alongside breast, ovarian, pancreatic, colorectal, or endometrial cancer
• A known inherited cancer-related gene change in a relative
• Ashkenazi Jewish ancestry alongside a relevant personal or family cancer history
A genetic counselor can help you understand whether testing may be useful and prepare questions for your physician.
For more detail, see Kadance’s guide to genetic testing for prostate cancer, which explains who may consider testing and what the process can involve. You can also learn how multi-gene panels work in our guide to inherited cancer risk panels.
Bring the information you have to your next appointment. You do not need a complete family tree to begin the conversation.
Consider asking:
• Does my family history place me at higher risk for prostate cancer?
• When should I begin discussing prostate cancer screening?
• Would genetic counseling help clarify my family’s cancer pattern?
• Is there a relative who has already had testing, or who may be the most informative person to test first?
Family history is one part of your overall health picture. Understanding it can help you and your physician make decisions that fit your individual circumstances.
Possibly. A father’s diagnosis can be an important risk factor, particularly if he was diagnosed before age 65. Ask your physician when a screening discussion makes sense for you based on your full health and family history.
Yes. Inherited cancer-related gene changes can come from either parent. Record cancer history on both sides of the family.
No. A PSA test is used in screening discussions and does not identify inherited gene changes. Genetic counseling can help determine whether hereditary cancer risk testing may be appropriate.
For individuals and families who want a more complete view of inherited cancer risk, Kadance Complete offers complete precision health: hereditary cancer risk, cancer care, and recovery support. Members receive access to hereditary cancer risk testing and licensed genetic counseling, designed to help them understand results and discuss appropriate next steps with their physician.