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Hereditary prostate cancer: when genes play a part | CION Cancer Clinics
Most prostate cancer is not inherited. It becomes common as men age and usually comes from changes that build up in the prostate over a lifetime. In a smaller group of families, a gene fault present from birth raises the risk, and the same fault can raise breast, ovarian or bowel cancer risk in relatives. This page explains how to tell the difference and why it matters. At CION Cancer Clinics, our oncologists plan screening and care for families with an inherited cancer syndrome, explained in plain words.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
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On this page
- What is hereditary prostate cancer?
- What makes a doctor suspect an inherited cause?
- How is an inherited cause actually found?
- The words you will meet, in plain language
- What a positive result changes, and for whom
- Four things families tell us, and what is actually true
- What this page cannot tell you
- Common questions about hereditary prostate cancer
The short answer
What is hereditary prostate cancer?
Hereditary prostate cancer is prostate cancer that grows partly because of a gene fault the man was born with. Most prostate cancer is not like this. It becomes common as men get older and usually comes from changes that build up inside the prostate over many decades.
How often a gene fault is behind it
Only a minority of men with prostate cancer carry an inherited fault. The share is higher in men whose cancer has spread, men diagnosed young, and men with several relatives affected. The gene found most often is BRCA2, the same gene linked to breast and ovarian cancer in women. Several other genes play a smaller part.
Why a family should care
An inherited fault does not stay with prostate cancer. The same fault can raise the risk of breast, ovarian, pancreatic or bowel cancer in his sisters, daughters and sons. That is why one man's result can change screening for relatives who have never been ill. It can also open up treatment options for the man himself if his cancer has spread.
Prostate cancer in an older father, on its own, is rarely a sign of an inherited fault.Patterns doctors look for
What makes a doctor suspect an inherited cause?
No single feature proves it. Doctors look at the man's own cancer and at the whole family tree together.
Diagnosis at a young age
Prostate cancer is mostly a disease of older men. A diagnosis in a man's forties or early fifties is unusual enough to raise the question.
Worth asking about when
- A father or brother was diagnosed young
- More than one man in the family was affected
Cancer that has spread
Men whose prostate cancer has already spread beyond the gland carry an inherited fault more often than men with early, slow disease. International guidelines now suggest offering these men a germline test, meaning a test for faults present from birth.
Other cancers on the same side
A mother, sister or aunt with breast or ovarian cancer, or relatives with pancreatic or bowel cancer, can point to a shared fault. The pattern across different organs matters as much as the prostate cancer itself.
Families often forget to mention cancers in women when a man is the patient. Mention them.A fault found in the tumour
Sometimes tumour testing, done to plan treatment, finds a BRCA2 or similar fault. That raises the question of whether the fault is also in his blood. Only a separate germline test can answer that.
Not sure whether this applies to you?
Ask an oncologistFrom suspicion to answer
How is an inherited cause actually found?
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The family tree is drawn
A genetic counsellor or oncologist asks about every relative on both sides, who had which cancer and roughly how old they were. Men and women are both included.
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The man with cancer is tested first
A blood or saliva sample is sent for a panel of genes linked to prostate cancer. Testing him first tells the family whether there is a fault to look for at all.
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The result is explained in person
The counsellor goes through what was found, what it means for his treatment, and what it does not mean. A result of uncertain meaning is treated as unhelpful, not as positive.
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Relatives are offered a targeted test
If a clear fault is found, brothers, sons and daughters can be tested for that exact fault. This targeted test is simpler, and usually cheaper, than the first one.
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Each carrier gets a plan
Men who carry the fault may start prostate checks earlier. Women may need breast or ovarian checks. Relatives who test negative usually return to ordinary screening.
On the report
The words you will meet, in plain language
- Germline
- Present in every cell from birth, and so able to pass to children. This is what a blood or saliva test looks for.
- Somatic
- A change found only in the tumour. It cannot be inherited, and testing for it belongs to treatment planning.
- BRCA2
- The gene most often linked to inherited prostate cancer. Faults in it tend to go with faster-growing disease.
- Mismatch repair genes
- The genes behind Lynch syndrome. A fault in one of them can raise prostate risk alongside bowel and womb cancer risk.
- HOXB13
- A gene whose faults raise prostate cancer risk more specifically, with little known effect on other organs.
- Variant of uncertain significance
- A change the laboratory cannot yet classify. It should not change anyone's treatment or screening on its own.
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Side by side
What a positive result changes, and for whom
For the man with prostate cancer
For his relatives
Certain targeted medicines may become an option if the cancer spreads
Brothers, sons and daughters can be tested for the exact fault
His doctors may watch more closely rather than simply wait
Men who carry it may start prostate checks earlier
Checks for other linked cancers may be added
Women who carry it may need breast or ovarian screening
Nothing changes about the diagnosis he already has
Relatives who test negative go back to ordinary risk
Commonly believed
Four things families tell us, and what is actually true
"Prostate cancer is an old man's disease, so genes do not matter."
Most cases are age-related, which is true. But a minority are driven by an inherited fault, and those men are often younger and have faster-growing disease. Knowing which group a man is in can change his treatment.
"BRCA is a women's gene. It has nothing to do with my father."
Men carry BRCA faults as often as women do. In men, a BRCA2 fault raises the risk of prostate cancer, male breast cancer and pancreatic cancer. A father can also pass the fault to his daughters.
"If my father had it, I will get it too."
Not necessarily. Each child has a one in two chance of inheriting a dominant fault, and carriers still may never develop cancer. Having a father with prostate cancer raises your risk, but it does not decide it.
"A tumour test already checked for genes, so we do not need another."
A tumour test looks at the cancer. It can miss inherited faults, and it cannot say whether a fault it finds came from birth. A separate blood or saliva test answers the family question.
Being straight with you
What this page cannot tell you
It cannot tell you whether your father's or your own prostate cancer is inherited. That needs a counsellor to draw the family tree and, in most cases, a germline test on the man who has the cancer. Reading about genes online cannot replace that step.
It cannot read a report for you
Two men with a fault in the same gene can face quite different decisions, depending on the exact change and how the laboratory classified it. What your specific variant means is a question for the counsellor who ordered the test. Bring the report to that appointment rather than searching the variant name.
Who this does not apply to
Most men with prostate cancer do not need a germline test. A man diagnosed in his seventies with slow, early disease, and no pattern of young or linked cancers in the family, is unlikely to learn anything useful. A counsellor will say so plainly. Testing is also not a replacement for the tumour testing that guides targeted treatment, which is a separate question.
Counselling in Telugu can be arranged, and the son or daughter handling the paperwork is welcome in the room.Questions we are asked
Common questions about hereditary prostate cancer
Is prostate cancer usually inherited?
No. Most prostate cancer comes from changes that build up with age and is not passed down. A smaller group of men carry an inherited fault. That group is larger among men diagnosed young, men whose cancer has spread, and men from families with several linked cancers.
Which men should ask about a genetic test?
Men whose prostate cancer has spread, men diagnosed unusually young, and men with close relatives who had prostate, breast, ovarian, pancreatic or bowel cancer. Men whose tumour test found a BRCA-type fault should also ask. Your oncologist can tell you whether you meet the criteria.
Does a gene fault change prostate cancer treatment?
It can. For men whose cancer has spread and carries a BRCA or similar fault, certain targeted medicines may become an option. It can also make doctors less willing to simply watch an early cancer. The details depend on the stage and are for your oncologist to explain.
My father has a BRCA2 fault. What does that mean for me?
You have a one in two chance of having inherited it. A targeted test for that exact fault will tell you. If you carry it, prostate checks usually start earlier, and your own children can be offered testing when they are adults.
Can daughters inherit a fault from a father with prostate cancer?
Yes. A daughter can inherit a BRCA2 or Lynch fault from her father just as easily as from her mother. For her, the main concern is usually breast or ovarian cancer, or womb and bowel cancer with Lynch. She should be told and offered counselling.
Is the test done on blood or tissue?
The inherited test is done on blood or saliva. Tissue from the tumour is used for a different test that guides treatment. If a tumour test has already found a fault, a blood test is still needed to know whether it is inherited.
Is testing covered by Aarogyasri or insurance?
Coverage for germline testing varies and often does not include well relatives. Ask the hospital's insurance desk before the sample is sent, not afterwards. The targeted test for relatives, once a family fault is known, is usually less expensive than the first panel.
Who do I talk to first?
Start with the oncologist treating the man with prostate cancer, or ask for a genetic counsellor. Bring a written list of relatives on both sides, what cancer each had and roughly when. The CION helpline can point you to the right clinic if you are unsure.
Your Specialists
Meet CION's oncologists. Bring your family history or genetic report to them.
Our medical oncologists see people with a strong family history of cancer, arrange genetic counselling and testing where it fits, and plan the checks that follow.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
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Sources
- National Cancer Institute — Genetics of Prostate Cancer (PDQ) - Health Professional Version
- MedlinePlus Genetics — Prostate cancer
- Cancer Research UK — Risks and causes of prostate cancer
- National Cancer Institute — BRCA Gene Changes: Cancer Risk and Genetic Testing
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Which genes raise prostate cancer riskBRCA2, HOXB13, Lynch genes and the rest, one by onePSA screening for men with a gene faultWhen checks start and how they differ for carriersProstate risk in BRCA and Lynch familiesWhat a sister's or mother's result means for the menTelling sons about prostate riskHow and when to have the conversation
Talk to us
Is your father's prostate cancer something the family should be tested for?
Tell us who in the family was diagnosed, with what, and at what age. We will tell you honestly whether a genetic referral makes sense and arrange it if it does. One helpline serves every CION centre.