Medical Oncologist
CION Cancer Clinics
Prostate cancer risk for men in BRCA and Lynch families | CION Cancer Clinics
If a BRCA or Lynch fault has been found in your mother, sister or aunt, the men in the family are just as likely to carry it. For men, BRCA2 is linked most clearly with prostate cancer that comes younger and grows faster, while Lynch syndrome adds a smaller rise. This page explains what her result means for fathers, brothers and sons, and why men are so often left out of testing. 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
- Does a BRCA or Lynch result in the family matter for the men?
- What each family fault means for a man's prostate
- How a man in the family gets from her result to his own plan
- The words you will meet, in plain language
- BRCA2 or Lynch: where the attention goes for a man
- Four things men tell us, and what is actually true
- What this page cannot tell you
- Common questions from men in BRCA and Lynch families
The short answer
Does a BRCA or Lynch result in the family matter for the men?
Yes. If a BRCA or Lynch fault has been found in a mother, sister or aunt, each of her brothers and sons has the same one in two chance of carrying it as her sisters and daughters do. For men, BRCA2 is the fault most clearly linked to prostate cancer, and Lynch syndrome raises the risk by a smaller amount.
A family fault does not choose between sons and daughters
These faults sit on chromosomes that men and women share equally. A father can inherit one from his mother, stay perfectly well, and pass it to his daughter, who develops breast cancer at a young age. From the outside the fault seems to have jumped over him. It did not. He carried it the whole time.
Why the men are usually the last to hear
BRCA is widely called a breast cancer gene, and Lynch is thought of as a bowel problem, so men often assume the result is not about them. Family conversations about a woman's diagnosis tend to stay among women. Men may live away for work and never see the report. The result is that fewer men are tested than women, even though the chance of carrying the fault is identical.
If a woman in your family has a BRCA or Lynch result, her brothers and sons deserve the same conversation as her sisters.Fault by fault
What each family fault means for a man's prostate
The genes differ a great deal. Knowing which one runs in your family changes what you should watch for.
BRCA2
The clearest link. Men who carry it have a raised risk of prostate cancer, and when it appears it tends to come younger and grow faster than usual.
Usually means
- PSA checks starting earlier than for other men
- A lower threshold for further tests
- Extra treatment options if the cancer ever spreads
BRCA1
The link with prostate cancer is weaker and less certain. Most teams still discuss PSA checks with male carriers, but with less urgency than for BRCA2.
Lynch syndrome
Caused by faults in MLH1, MSH2, MSH6 or PMS2. The prostate risk is modestly raised, most clearly with MSH2. For these men, bowel screening comes first.
A Lynch result makes regular colonoscopy the priority, well before the prostate.The other risks men carry
BRCA2 also raises the risk of male breast cancer, pancreatic cancer and melanoma. Lynch raises the risk of bowel, stomach and urinary tract cancers. A good plan covers all of them, not the prostate alone.
Not sure whether this applies to you?
Ask an oncologistStep by step
How a man in the family gets from her result to his own plan
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Get a copy of the relative's report
The exact variant name matters. Ask your sister, mother or aunt for the report, or for the family letter her counsellor gave her. Without it, you may need a much larger and costlier test.
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See a genetic counsellor
They will confirm which side of the family the fault came from, and explain what a positive or negative result would mean for you before you decide to test.
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A targeted blood test
You are tested only for the fault already found in the family. It is simpler to read and usually cheaper than a full gene panel.
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If you do not carry it
Your risk goes back to that of other men with your background, and your children cannot inherit the fault from you.
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If you do carry it
You get a plan that fits the gene: earlier PSA checks for BRCA2, colonoscopy for Lynch, and advice on the other organs. Your own children can then be offered testing when they are adults.
On the report
The words you will meet, in plain language
- Cascade testing
- Offering the test to relatives one step at a time, once a fault has been found in the family.
- Targeted test
- A test for one known fault only, used when the family variant is already known.
- PSA
- A blood test for a protein made by the prostate. A raised level can mean cancer, but also infection or simple enlargement.
- Mismatch repair genes
- The four genes behind Lynch syndrome. They fix copying errors in DNA.
- Aggressive prostate cancer
- A cancer that looks fast-growing under the microscope and is more likely to spread if left alone.
- Carrier
- Someone who has the fault but does not have cancer. A carrier is not a patient.
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Side by side
BRCA2 or Lynch: where the attention goes for a man
BRCA2 in the family
Lynch in the family
Prostate risk clearly raised, often younger
Prostate risk modestly raised, mostly with MSH2
PSA checks usually start early
Colonoscopy is the first priority
Pancreas and male breast also watched
Bowel, stomach and urinary tract also watched
Extra drug options if cancer spreads
Immunotherapy may be considered if cancer spreads
Commonly believed
Four things men tell us, and what is actually true
"BRCA is a women's gene. It has nothing to do with me."
Men carry BRCA faults as often as women do. A man who carries BRCA2 has his own raised risk of prostate, pancreatic and breast cancer, and can pass the fault to his daughters and sons.
"It came through my mother's side, so it will not reach my prostate."
A fault behaves the same way whichever parent it came from. What matters is whether you inherited it, and only the test can answer that.
"If I carry BRCA2, prostate cancer is only a matter of time."
It raises the risk. It does not settle anything. Many carriers never develop prostate cancer, and earlier checks mean that those who do are more often found at a treatable stage.
"My PSA was normal once, so I am clear."
A single PSA test tells you about that day. For male carriers the value is in repeated checks over years, so a change can be spotted early.
Being straight with you
What this page cannot tell you
It cannot tell you whether you carry your relative's fault. That takes a test, ideally after a conversation with a genetic counsellor who has seen her report. Nor can it give you a personal risk figure. Published estimates vary between studies and populations, and data from Indian men in particular are still limited.
It cannot interpret a report you are holding
Two BRCA2 variants can carry quite different meanings, and some results come back as uncertain. What your specific variant means is a question for the counsellor who ordered the test. Searching for it online rarely helps and often frightens.
Who this does not apply to
If the fault in your family was found on your relative's tumour only, and not in her blood, it was not inherited and you cannot have received it. Testing a tumour for treatment is covered on our targeted therapy pages. Men whose family history is a single prostate cancer in an older relative, with no known fault, usually do not need this test.
Not sure whether your relative's result was from blood or from the tumour? Ask to see the report. It will say.Questions we are asked
Common questions from men in BRCA and Lynch families
My sister has BRCA2. What is my chance of carrying it?
If one of your parents carries it, your chance is one in two, exactly the same as your sister's was. If testing shows the fault came from the other side of the family, your chance falls a long way. A counsellor can usually work out which parent it came from.
When should a male BRCA2 carrier start PSA checks?
Earlier than other men. Many guidelines suggest starting in the early forties, and sooner if relatives were diagnosed young. Your team will set the timing and the gap between tests based on your gene and your family.
I have Lynch syndrome. Should I worry about my prostate?
The prostate risk is raised a little, most clearly with MSH2, and PSA checks are worth discussing. Your first priority is regular colonoscopy, because bowel cancer is the main risk in Lynch syndrome and screening for it clearly works.
Does the test need to be done at CION?
No. The test can be done at any accredited laboratory, in India or abroad. What matters is that it looks for the exact variant found in your relative. Bring her report or her family letter to the appointment.
My father had prostate cancer and my aunt had BRCA2. Are they linked?
They may be. If your father is alive, testing him for the family fault is often the clearest next step. If he carries it, his diagnosis may have been part of the same pattern, and the chance that you carry it is one in two.
Will a positive result change my prostate cancer treatment?
If you already have prostate cancer, it can. For cancer that has spread, BRCA2 can open up a group of tablets that target damaged DNA repair, and Lynch can make immunotherapy an option. Your oncologist will discuss whether either applies.
Should my sons be tested?
Only once they are adults and can choose for themselves, because these risks arise in adult life. If you carry the fault, each of your children has a one in two chance of having it. Your counsellor can help you plan how to tell them.
How do I start if my relative lives in another city?
Ask her to send a photo or scan of her genetic report, then book a counselling appointment where you live. Call the CION helpline if you are not sure where to begin, and someone will explain what to bring and what the test involves.
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)
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Sources
- National Cancer Institute — Genetics of Prostate Cancer (PDQ) - Health Professional Version
- National Cancer Institute — BRCA Gene Changes: Cancer Risk and Genetic Testing
- MedlinePlus Genetics — Lynch syndrome
- Cancer Research UK — Risks and causes of prostate cancer
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
BRCA2 and prostate cancer risk in menThe gene most clearly tied to aggressive prostate cancerLynch syndrome in menBowel, urinary and prostate checks togetherPSA screening for men with a gene faultWhen checks start and how they differ for carriersTelling sons about prostate riskHow and when to have the conversation
Talk to us
A woman in your family has a BRCA or Lynch result. Should you be tested?
Tell us which fault was found and on which side of the family. We will explain what it means for you and arrange a counselling appointment if it makes sense. One helpline serves every CION centre.