Cancer and family history
My father has prostate cancer: what does the family need to know?
If your father or brother has prostate cancer, it is understandable to ask whether you should do something differently. Family history can be relevant, but the word prostate cancer does not reveal the full clinical picture.
You can prepare for a conversation without calculating your own risk or choosing a genetic panel. Focus on what is known about the diagnosis and on the question you want a healthcare professional to answer.
Find out which details are actually known
Prostate cancer in a close biological relative is a recognised risk factor. Age at diagnosis, disease characteristics and other family cancers can matter to a professional assessment. An older age at diagnosis should not be used to dismiss your question.
Ask your relative what they feel comfortable telling you. If stage or grade is unknown, write unknown. Do not translate descriptions such as aggressive or caught early into a clinical category yourself. The original treating team can clarify the terminology.
Look beyond one organ and one family branch
A genetics professional may consider other cancer diagnoses alongside prostate cancer. Keep both biological family branches in the conversation rather than recording only men with the same diagnosis.
For a short appointment note, list the parent or sibling's diagnosis first, followed by other confirmed diagnoses. Include a separate question about any earlier genetic assessment. Avoid making a family syndrome out of a collection of incomplete memories.
Gene names need a clinical context
BRCA1, BRCA2, ATM and HOXB13 are examples in professional discussions of inherited prostate cancer susceptibility. Naming a gene does not establish that you carry a harmful variant, and this is not a complete list or a test recommendation.
A result produced to help guide a relative's cancer treatment may need separate interpretation for inherited susceptibility. Ask who can explain whether it has implications for relatives, rather than assuming that a shared gene name is a shared result.
Prepare a screening question, not a screening schedule
You could ask: given my father's diagnosis, what information do you need before advising me about prostate screening? Write down previous advice and any tests you have already had so the appointment begins with a clear record.
This article does not recommend a PSA test, an age to begin testing or a repeat interval. Those decisions involve individual circumstances, possible benefits and harms, and guidance where you receive care. A family-history journey cannot make them for you.
What to prepare for the conversation
- Note the biological relationship and approximate age at diagnosis.
- Keep stage, grade and spread marked unknown unless confirmed.
- List other original cancer diagnoses on both family branches.
- Ask whether a genetic report addresses inherited susceptibility.
- Bring one question about your own care and ask who will follow it up.
Common questions
Should I automatically have the same tests as my father?
No. His tests may be intended to diagnose or treat his cancer. Ask which, if any, are relevant to your own situation.
Can prostate cancer genetics matter to daughters?
Some inherited cancer predispositions have implications beyond prostate cancer. A qualified professional can explain a confirmed family finding without assuming which relatives inherited it.
Can I ask about family risk if no report is available?
Yes. State what you know and what is missing. The consultation can establish which information is worth seeking and how to request it appropriately.
Sources and editorial review
Sources checked on 5 September 2026. Educational content prepared by Genidi; not yet reviewed by an independent clinician.