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Telling your parents you carry a cancer gene | CION Cancer Clinics
If you carry an inherited cancer fault, it very likely came from one of your parents. Telling them can help their brothers, sisters and your cousins find out their own risk. It can also stir up guilt, denial or blame. This page explains how to prepare, what parents usually feel, what testing them can show, and how to keep the conversation from turning into an accusation. At CION Cancer Clinics, our team helps carriers and their families plan checks, next steps and support after a genetic result.
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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
- Should you tell your parents you carry a gene fault?
- How do parents usually react?
- How do you prepare for the conversation?
- What do the terms mean when you explain them to parents?
- What happens if a parent is tested, and if not?
- What this page cannot tell you
- Four things families assume, and what is actually true
- Common questions about telling parents
The short answer
Should you tell your parents you carry a gene fault?
Usually, yes. In most cases the fault came from one of them, so your result is also news about them and their brothers and sisters. How you tell them matters, because many parents hear it first as blame.
Why your result is also about them
An inherited fault is passed from parent to child. If you carry one, one of your parents very likely carries it too, whether or not they have ever been ill. Knowing which side it came from tells the family which aunts, uncles and cousins may want testing, and which side can relax. Occasionally the fault is new in you and neither parent has it. Only testing can show that.
Why it lands differently for parents
Parents expect to protect their children. Being told they may have passed something on can feel like failure, even though nobody chooses the genes they give. Older parents may also carry beliefs about hereditary illness from a time when it was hidden. Expect feelings first and questions later.
You are passing on useful information. You are not delivering an accusation, and you can say so out loud.What to expect
How do parents usually react?
Reactions vary, and many parents move through more than one. None of them means the conversation went badly.
Guilt
The most common first reaction. A mother or father may apologise, cry or go quiet. Tell them clearly that nobody picks the genes they pass on, and that knowing now is what lets you stay ahead of it.
Denial
Some parents insist there is no cancer on their side, or that the test must be wrong. Give them time. A counsellor can explain later how a fault can sit quietly for generations without anyone falling ill.
Blame between them
In some families the talk turns quickly to whose side it came from. Mothers are often blamed first, sometimes by in-laws. This is unfair and often wrong, because a father can carry and pass on a fault equally.
A practical response
Some parents go straight to action: who else needs to know, what it costs, where to get tested. This can feel cold, but it is often how worry shows itself. Let them help, and give them a clear first step.
Not sure whether this applies to you?
Ask an oncologistPreparing for it
How do you prepare for the conversation?
Know your own result well
Be able to say the gene name, what it raises the risk of, and what your own plan is. Ask your counsellor for a family letter that explains the result in writing, so you are not the only source of facts.
Decide who to tell first
Some people tell both parents together. Others start with the parent they find easier to talk to. If one parent is unwell or frail, think about who else should be present to support them.
Say it simply, then pause
Something like: "My test found a gene change that runs in families. It is not anyone's fault. It means some of us may need extra check-ups." Then stop and let them respond.
Explain what it could mean for them
Tell them that testing one or both of them could show which side of the family the fault came from. Make clear this is an offer, not a demand, and that they can take time to decide.
Leave something in writing
Parents rarely remember everything said on a difficult day. Leave the family letter or a short note in Telugu, and offer to come with them to a counselling appointment.
Words you may need
What do the terms mean when you explain them to parents?
- Inherited fault
- A change in a gene that was present from birth and can pass from parent to child. It sits in every cell of the body.
- Side of origin
- Which parent the fault came from. Knowing this tells the family which branch of relatives may need testing.
- Cascade testing
- Testing relatives one step at a time for the exact fault already found in the family. It is quicker and cheaper than testing from scratch.
- Obligate carrier
- A relative who must carry the fault because of where they sit in the family tree, even without a test. A counsellor works this out.
- New fault
- Rarely, a fault appears for the first time in one person. Neither parent carries it, and their other relatives are not affected.
- Family letter
- A letter from your counsellor that explains the result for relatives. It can be shown to their own doctor.
Side by side
What happens if a parent is tested, and if not?
A parent agrees to testing
A parent declines testing
The side the fault came from is usually confirmed
The family tree may still point to one side
Their own brothers and sisters can be offered testing
Both sides may need to be considered for now
The parent can start their own check-ups if needed
Their doctor can still watch them on family history
The parent who tests negative can stop worrying
The choice is respected, and can be revisited later
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Being straight with you
What this page cannot tell you
It cannot tell you which of your parents carries the fault. Family history can hint at a side, but it is often misleading, especially in small families or where relatives died young of other causes. Only testing, arranged through a counsellor, can answer it. What your specific variant means for your parents is a question for the counsellor who ordered the test.
It cannot decide for your parents
Adults have the right to decline testing, including your mother and father. You can share the information and the offer. What they do with it is their decision, and pressing hard often pushes people away.
Who this does not apply to
If your result showed only a variant of uncertain significance, it is not a positive result, and there is usually nothing yet for your parents to act on. If both your parents have died, the question of side may be answered through aunts, uncles or stored tissue instead.
Commonly believed
Four things families assume, and what is actually true
"It must have come from my mother. The women in her family had cancer."
Sometimes, but not always. A father can carry a fault linked to breast or ovarian cancer and never be ill. Families with few daughters can hide a pattern completely. Only testing tells you which side it came from.
"My parents are old. Telling them serves no purpose."
Their result can matter most for their brothers, sisters and nieces, many of whom are younger. Older parents may also still benefit from some check-ups themselves.
"If my parent has never had cancer, they cannot carry it."
Many carriers stay well all their lives. A healthy parent can still carry and pass on the fault, which is why their health alone does not tell you which side it came from.
"Telling them will only make them feel guilty."
Guilt is common at first, but most parents say they would rather know. What helps is hearing, clearly and early, that nobody chose this and that the information protects the family.
Questions we are asked
Common questions about telling parents
Do I have to tell my parents about my genetic result?
No one can make you. It is your information. But because the fault very likely came from one of them, telling them can help their brothers, sisters and your cousins find out their own risk. A counsellor can help you decide how and when, or whether to tell only one parent.
How do I tell my mother without her feeling guilty?
Say early that nobody chooses the genes they pass on, and that the fault may not even be from her side. Thank her for anything she can tell you about her family. Guilt often eases once she has something useful to do, such as helping build the family tree.
My father refuses to believe the result. What now?
Give him time and do not argue. Leave the family letter with him. Some parents accept the news only when a doctor explains it, so offer to take him to a counselling session. If he still declines, his choice stands, and his relatives can be informed in other ways.
Can my parents be tested even if they are well?
Yes. Once the exact fault is known from your test, a parent can be tested for that single change. This is usually a simpler test than your own. A counsellor should see them first to explain what a positive or negative result would mean for them.
What if my parents live in a district far from Hyderabad?
The first conversation can happen at home, with the family letter. Counselling can sometimes be done by video, and the sample can often be collected closer to home. Ask the counsellor what can be arranged before asking elderly parents to travel.
Should I tell my in-laws as well?
Your in-laws are not blood relatives, so the fault does not affect their own risk. They may need to know only if it affects your children, their grandchildren. Many people wait until they and their spouse have agreed what to say.
What if both my parents test negative?
Then the fault may be new in you, and your brothers, sisters and wider family are unlikely to carry it. Very rarely there are other explanations. Your counsellor will talk you through what a double negative means for the rest of the family.
Can a counsellor speak to my parents for me?
A counsellor cannot contact them without your consent, but with it, many will meet your parents with you or separately. Counselling in Telugu often helps older parents follow the explanation. Call the CION helpline and ask how to arrange it.
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 — Cancer Genetics Risk Assessment and Counseling (PDQ) – Health Professional Version
- National Cancer Institute — Genetic Testing for Inherited Cancer Susceptibility Syndromes
- NHS — Predictive genetic tests for cancer risk genes
- Cancer Research UK — Inherited cancer genes and increased cancer risk
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
Blame between parents after a resultWhen the talk turns to whose side it came fromTelling siblings and managing their reactionsYour brothers and sisters are the next people to tellTelling your children about a genetic resultThe same news, told to the generation belowWhen the family wants it kept secretIf your parents ask you not to tell anyone
Talk to us
Want help telling your parents?
A genetic counsellor can meet your parents with you and explain the result in Telugu if that helps. Tell us what you need and we will arrange it. One helpline serves every CION centre.