Medical Oncologist
CION Cancer Clinics
Deciding whether to test your children for TP53 | CION Cancer Clinics
Most families with a TP53 fault are offered testing for their children in childhood, not when they turn eighteen. That is unusual in genetics. It happens because checks for Li-Fraumeni syndrome start early and appear to find cancers sooner. It is still a choice, and some families wait. This page explains why childhood testing is offered, what parents weigh up, and who helps you decide. 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
- Should my child be tested for the family TP53 fault?
- What do parents weigh up before deciding?
- How is the decision usually made, step by step?
- What do the words on the letter mean?
- What changes with each result?
- What this page cannot tell you
- Four worries parents raise, and what is actually true
- Common questions about testing children for TP53
The short answer
Should my child be tested for the family TP53 fault?
Usually yes, but only after a proper conversation with a genetic counsellor. Li-Fraumeni syndrome is one of the few inherited conditions where testing in childhood is recommended. Some cancers linked to it can appear in the first years of life, and a check-up plan exists that starts in infancy. Each child of a carrier has a one in two chance of inheriting the fault.
Why this is different from most gene faults
For faults that only raise risk in adult life, such as those linked to breast and ovarian cancer, testing waits until the child is old enough to decide. Nothing would be done differently in childhood, so the child keeps the right to choose. With TP53 the reasoning flips. Some cancers linked to the fault, including a rare tumour of the adrenal gland and certain brain tumours, occur mainly in young children. Knowing early means the scans can begin early.
What testing does and does not do
A test cannot prevent cancer and it cannot change the gene. What it does is sort children into two groups. Those who carry the fault join a check-up programme with a paediatric oncology team. Those who do not are released from it, and so are their own future children.
A negative result in a child from a known TP53 family is genuinely good news. It usually closes the question for that branch of the family.Both sides of the decision
What do parents weigh up before deciding?
Families reach different decisions, and counsellors expect that. These are the considerations that come up most often.
Reasons families test early
If the child carries the fault, scans and checks can start from the first months of life. Any doctor treating the child for any illness will also know to avoid radiation where possible.
What families tell us they wanted
- Childhood tumours found earlier
- Radiation-free imaging chosen from the start
- Relief for siblings who test negative
Reasons some families wait
Some parents feel a result would change how they see their child, or that the programme would be too heavy for a small child. Others cannot yet reach a centre that runs the scans.
What families tell us held them back
- Worry about labelling the child
- Distance from an MRI centre
- A parent still absorbing their own result
What the child is owed
As children grow, their own view matters. Older children can be told in words they understand and asked what they think. Counsellors call this assent, and it sits alongside a parent's consent rather than replacing it.
What the evidence says so far
Studies that followed families who chose a check-up programme found more tumours at an early stage, and survival was better in the group being watched. The studies are small because the syndrome is rare, but the direction has been consistent.
Not sure whether this applies to you?
Ask an oncologistFrom first talk to result
How is the decision usually made, step by step?
The parent's result is confirmed
Testing a child only makes sense once the exact family fault is known and has been classified as disease-causing. A variant of uncertain significance is never used to test children.
A counselling appointment for the parents
You meet a genetic counsellor, ideally with both parents present. You go through what the syndrome means, what the check-up programme involves and what happens with either result.
Time to think it over
Nobody expects a decision in the room. Most families go home, talk with grandparents and come back later. Counselling in Telugu can be arranged so that everyone in the family can follow.
A small blood or cheek-swab sample
The child gives a small blood sample, or sometimes a cheek swab. The laboratory looks only for the one known family fault, which is quicker and cheaper than a full gene panel.
The result is given in person
Results are shared at a follow-up appointment, not by message. If the child carries the fault, the first scans and the paediatric referral are planned before you leave.
In the counselling room
What do the words on the letter mean?
- TP53
- The gene that makes a protein which stops damaged cells from dividing. It is often called the guardian of the genome.
- Li-Fraumeni syndrome
- The pattern of cancers seen in families who carry an inherited TP53 fault. Some doctors now call it heritable TP53-related cancer syndrome.
- Predictive test
- A test in someone who is well, looking for a fault already found in the family. It predicts risk. It does not diagnose illness.
- Consent and assent
- Consent is the parent's legal agreement. Assent is the child's own agreement, sought in plain words once they are old enough to understand.
- Surveillance
- A planned programme of regular scans and check-ups to find a tumour early. For TP53 it relies on MRI and ultrasound rather than CT or X-ray.
- De novo
- A fault that appeared for the first time in one person rather than being inherited. Their children can still inherit it.
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Side by side
What changes with each result?
The child carries the fault
The child does not carry it
Check-ups begin with a paediatric oncology team
Ordinary childhood health checks apply
Doctors avoid CT scans and radiotherapy where they can
Normal imaging choices apply for any illness
The child's own future children can be tested
The child cannot pass the fault on
The family plans regular travel to a scanning centre
No specialist programme is needed
The child's own view is revisited as they grow
The result is explained to them later on
Being straight with you
What this page cannot tell you
It cannot tell you what to decide for your child. That decision belongs to you, made with a genetic counsellor and a paediatric oncologist who know your family's exact variant and history. Some TP53 variants behave more mildly than others, and that can change the advice about when checks begin and how often.
It cannot read your family's report
What your specific variant means is a question for the counsellor who ordered the test. The same gene can carry very different faults, and the classification written on the report matters more than the gene name.
Who this does not apply to
Most children do not need this test. It applies only where a parent or a close relative has a confirmed disease-causing TP53 fault. A child with cancer in the wider family but no known fault is assessed differently, usually by testing the affected relative first.
If you are unsure whether your family's result is confirmed, bring the report to the counselling appointment and ask.Commonly believed
Four worries parents raise, and what is actually true
"Testing a small child is always wrong, because they cannot choose."
That rule exists for faults where nothing changes in childhood. With TP53, checks begin in infancy and appear to find tumours earlier, so professional guidance supports offering testing to children. It is offered, never forced.
"If my child tests positive, they will definitely get cancer."
The risk is high, but it is not a certainty. Some carriers reach old age without cancer. The check-up programme exists so that anything that does develop is found while it is small.
"Not knowing lets the child have a normal childhood."
A child who has not been tested is usually treated as possibly carrying the fault, so the check-up plan is still advised. For many families, not knowing means more scans across more children, not fewer.
"The scans will harm my child."
The programme relies on ultrasound and MRI, which use no radiation. Young children may need sedation or a light anaesthetic to stay still for MRI, and the team will explain what that involves.
Questions we are asked
Common questions about testing children for TP53
At what age can a child be tested for TP53?
Testing can be done at any age, including soon after birth. Many families test in infancy so that checks for childhood tumours can begin straight away. The timing is agreed with your counsellor and the paediatric team, and depends partly on when scans can realistically start where you live.
Can we test one child and not the others?
Yes. Each child is a separate decision, although most families prefer to treat siblings the same way so that no child feels singled out. A child who is not tested is usually followed as if they might carry the fault, so the check-ups tend to happen anyway.
What if the two parents disagree?
This is common, and a counsellor will not push either parent. Some families take several appointments to reach a decision. Where parents cannot agree, testing is usually postponed while the child is offered the check-ups anyway, which protects them in the meantime.
Should we tell our child the result?
Yes, in stages and in words that fit their age. Children who grow up knowing tend to cope better than those told suddenly as teenagers. Your counsellor or a child psychologist can help you plan what to say, and when to say it.
Is the test painful or risky for a baby?
No more than any routine blood test. A small sample is taken from a vein or a heel prick, and a cheek swab is sometimes possible instead. The sample is tested only for the one fault already known in your family.
Does a negative result mean no checks at all?
It means your child has the same background risk as other children, and no specialist programme is needed. They still have the usual childhood health checks. If anyone in the family receives a different result later, the plan is reviewed.
Will a positive result affect my child's insurance later?
India has no specific law on genetic discrimination, and the position has been argued in court rather than settled by statute. Ask your counsellor about this before testing. It is a fair question, and raising it does not mean you should avoid the test.
Where are TP53 check-ups for children done in Telangana?
The programme needs a paediatric oncology team and access to whole-body MRI, which larger centres in Hyderabad offer. Families from districts usually combine several scans into one visit. Call the CION helpline and we will explain how the programme can be arranged for your child.
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
- GeneReviews (NCBI) — Li-Fraumeni Syndrome
- MedlinePlus Genetics — Li-Fraumeni syndrome
- MedlinePlus Genetics — TP53 gene
- National Cancer Institute — Genetic Testing for Inherited Cancer Susceptibility Syndromes
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
The Toronto protocol: surveillance explainedThe check-up plan a child who carries the fault would followWhole-body MRI: what the scan day involvesWhat the yearly scan is like, including for young childrenLi-Fraumeni syndrome: the full clinical pictureWhich cancers the syndrome raises, and at what stage of lifeLi-Fraumeni and family planningOptions for couples before a pregnancy
Talk to us
Not sure whether to test your child?
Tell us about your family's TP53 result and your children's ages. We will arrange a counselling appointment where both parents can ask everything, in Telugu if you prefer. One helpline serves every CION centre.