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CDKN2A positive: the steps that usually follow | CION Cancer Clinics
A positive CDKN2A result means you carry a fault that raises your risk of melanoma, and in some families of pancreatic cancer. It does not mean you have cancer, and nothing has to happen today. What follows is a results appointment, regular skin checks, a talk about the pancreas and a plan for your relatives. This page walks through each step. At CION Cancer Clinics, our oncologists explain what a gene result means for you and your family, and plan the checks that follow.
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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 happens after a positive CDKN2A result?
- Which checks and changes usually start?
- What do the first few months look like?
- The terms used in follow-up, in plain language
- What changes for you, and what does not
- Four worries we hear after a positive result
- What this page cannot tell you
- Common questions after a CDKN2A result
The short answer
What happens after a positive CDKN2A result?
Nothing has to happen today. A positive result means you carry a fault that raises your risk of melanoma, and in some families of pancreatic cancer. The next steps are a results appointment, a full skin check, a conversation about the pancreas, and a plan for telling relatives.
The first conversation
Your genetic counsellor will go through the report with you, line by line. They will explain which fault was found, what is known about it, and which cancers matter for your family. Bring someone with you. Write your questions down before you go, because most people forget half of them in the room.
What does not change
You do not have cancer because of this result. You do not need treatment. Your daily life, your work and your diet stay as they are, apart from how you handle sun and tobacco. Most carriers carry on much as before, with a few extra appointments each year.
Why the result is still worth having
Melanoma found early, while it is thin, is far easier to treat than melanoma found late. Carriers who are checked regularly are more likely to have a problem picked up at that early stage. The result also gives your brothers, sisters and children a clear question to answer, instead of years of guessing.
A positive result is a reason to be watched, not a reason to panic.Your new routine
Which checks and changes usually start?
Four things form the core of the plan for most carriers. Your counsellor will adjust them to your family.
Regular skin checks
A dermatologist examines your whole skin, often with a handheld magnifier. Photographs of your moles may be taken so later changes are easy to spot.
Look closely at
- Soles of the feet and palms
- Under the nails
- The scalp and the back
Checking your own skin
You will be shown how to check your skin at home each month. A family member can check the places you cannot see. Any new or changing mole goes to the dermatologist early.
Report quickly if a mole
- Grows, darkens or changes shape
- Bleeds, itches or crusts
- Looks unlike your other moles
A conversation about the pancreas
If pancreatic cancer runs in your family, or your fault is linked to it, you may be referred to a specialist team. They decide whether scans of the pancreas make sense, and when to begin.
Sun and tobacco
Shade, covering clothes and sunscreen lower melanoma risk. Stopping smoking matters even more, because smoking raises pancreatic risk further in carriers. That includes beedis and chewed tobacco, which many families do not count as smoking.
Not sure whether this applies to you?
Ask an oncologistStep by step
What do the first few months look like?
The results appointment
The counsellor explains the finding, answers questions and gives you a written summary. Ask for a copy of the laboratory report itself.
A baseline skin examination
The dermatologist records every mole that matters. This first visit takes longer than later ones, because it sets the picture everything else is compared against.
Telling your relatives
Parents, brothers, sisters and adult children each have an even chance of carrying the same fault. A family letter from the counsellor makes this easier to share.
A pancreas referral, if it applies
Only some carriers need this. When they do, the specialist team explains what the scans can and cannot find before anything is booked.
Words you will hear
The terms used in follow-up, in plain language
- Dermoscopy
- Looking at a mole through a lit magnifier. It shows patterns that the naked eye misses.
- Mole mapping
- Photographs of your skin and moles, kept on file so the next visit can show exactly what has changed.
- Endoscopic ultrasound
- A thin camera passed through the mouth into the stomach, with an ultrasound probe that looks at the pancreas from close up.
- MRI of the pancreas
- A scan that uses magnets instead of radiation. It shows the pancreas and its ducts in detail.
- Cascade testing
- Testing relatives, one branch at a time, for the exact fault already found in the family.
- Carrier
- Someone who has the inherited fault but does not have cancer. A carrier is not a patient.
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Side by side
What changes for you, and what does not
What changes
What stays the same
Regular skin checks with a dermatologist
No treatment, no daily medicine
Stricter sun protection
Your diet and your work
A firm reason to stop smoking
Your ability to marry and have children
Relatives may be offered testing
Relatives who test negative return to routine care
Commonly believed
Four worries we hear after a positive result
"All my moles should be removed now."
No. Removing every mole does not remove the risk, because melanoma often starts in normal skin. The dermatologist removes only the moles that change or look suspicious.
"I should have a pancreas scan straight away."
Not always. Scans are offered to carriers whose family history or fault makes them worthwhile, at an age a specialist team decides. Scanning too early can lead to worry and unnecessary tests.
"We should keep this from the rest of the family."
Relatives can only protect themselves if they know. How and when you tell them is your choice, and the counsellor can help you find the words.
"Our children will need testing right away."
Usually testing waits until a child can take part in the decision. Good sun habits can start now, for every child in the family.
Being straight with you
What this page cannot tell you
It cannot tell you what your own fault means. CDKN2A faults are not all the same, and some carry a stronger link to pancreatic cancer than others. What your specific variant means is a question for the counsellor who ordered the test.
It also cannot tell you how your family will react. Some relatives want testing at once and some do not want to know. Both are allowed, and a counsellor can support each of them.
It cannot set your schedule
How often your skin is checked, and whether your pancreas is scanned, depends on your fault, your family and your own skin. Guidelines also change as evidence grows. Studies on pancreas scanning are still small, and experts do not yet agree on every detail.
Who this does not apply to
If your result was a variant of uncertain significance, this plan does not apply to you yet. If CDKN2A appeared on a tumour report rather than a blood test, that is a targeted therapy question for your oncologist. Neither is the same as an inherited positive result.
Ask whether your insurer or scheme covers checks for someone who does not have cancer. Many cover treatment, not screening.Questions we are asked
Common questions after a CDKN2A result
How soon should I see a dermatologist?
Soon, but it is not an emergency. Ask your counsellor for a referral at the results appointment. If you already have a mole that is changing, bleeding or itching, mention it and you will be seen sooner.
Do I need scans of my pancreas?
Possibly. It depends on whether pancreatic cancer has appeared in your family and which fault you carry. A specialist team weighs the benefit against the chance of finding things that turn out to be harmless. Ask your counsellor whether you qualify.
Which relatives should I tell first?
Start with parents, brothers, sisters and adult children, as each has an even chance of carrying the fault. Then think about the side of the family the fault came from. The counsellor can give you a family letter to share.
Can I still use sunscreen and go outdoors?
Yes. You do not need to stay indoors. Avoid the strongest midday sun where you can, wear a hat and covering clothes, and use sunscreen on exposed skin. The aim is to avoid burning and heavy tanning, not to avoid daylight.
Does this affect marriage in our family?
Carrying a fault does not stop anyone marrying or having healthy children. Whether and when to share a result before a marriage is a personal decision. Many families find it helps to talk it through with a counsellor first.
Will a positive result affect my insurance?
India has no dedicated law on genetic discrimination in insurance. Read the declaration questions on any new policy carefully. It is a fair question to raise with your counsellor, ideally before relatives decide whether to test.
Is there anything I can take to lower the risk?
No medicine is proven to lower risk for CDKN2A carriers. The steps that help are sun protection, not smoking, and regular checks that catch a melanoma while it is thin and easier to treat.
Can I have my follow-up in Telugu?
Ask for it. Counselling in your own language makes a real difference to what you remember afterwards. The CION helpline can tell you which clinic suits you and which language the appointment can be held in.
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 Skin Cancer (PDQ) – Health Professional Version
- MedlinePlus Genetics — CDKN2A gene
- Cancer Research UK — Risks and causes of melanoma
- NHS — Predictive genetic tests for cancer risk genes
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
Surveillance for CDKN2A carriersWhich checks, how often, and who runs themTesting the family for CDKN2AWho should be tested next, and in what orderCDKN2A and pancreatic cancer riskWhen pancreas scans are offered, and what they can findThe CDKN2A gene explainedWhat the gene does, before anything else
Talk to us
Just received a CDKN2A result?
We can help you find a genetic counsellor and a dermatologist, and explain what the next few months usually involve. One helpline serves every CION centre.