Hematologist
CION Cancer Clinics
When CML comes back after stopping a TKI | CION Cancer Clinics
When CML comes back after stopping a TKI, it is usually found as a rise in BCR-ABL on a routine blood test, before any symptoms. Your haematologist restarts the tablet, often the same one, and for most people who restart promptly the level falls back to a low level. A rise does not mean you did anything wrong. What matters is acting on it without delay. At CION Cancer Clinics, every leukaemia, MDS and MPN case is reviewed by our haematologist and discussed at a tumour board before a plan is agreed.
BP
Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
17+specialists on panel
15,000+patients treated
35+centres across Telangana & AP
4.8★ / 800+Google rating
On this page
- What happens if CML comes back after stopping a TKI?
- Is a rise on the test the same as the leukaemia returning fully?
- What usually happens from the result to control again?
- When does CML tend to return after stopping?
- What do families fear about a relapse that is not true?
- What can this page not tell you, and what should you ask?
- Common questions about CML relapse after stopping
The short answer
What happens if CML comes back after stopping a TKI?
If CML comes back after stopping, it is almost always found early, as a rise in BCR-ABL on your routine blood test, long before you feel unwell. Your haematologist restarts the TKI, and for most people who restart promptly, BCR-ABL falls back to a low level again.
What "coming back" usually means
Doctors call this a molecular relapse. It means the amount of the faulty BCR-ABL gene in your blood has risen above an agreed line, usually the level called major molecular response. Your blood counts are usually still normal, and there are usually no symptoms. It is a signal on a test, not a return to how things were at diagnosis.
Why it happens
Stopping a tablet does not remove every leukaemia cell. In some people the few that remain stay quiet for years without medicine. In others they start to grow again. Nobody can predict with certainty which group you will be in, which is why frequent testing is part of every attempt. A rise does not mean you did anything wrong, or that the decision to try was a mistake.
Why catching it early matters
The testing schedule after stopping is built so that a rise is seen while it is still small. At that point the leukaemia can usually be brought back under control, often with the same tablet. The families who run into difficulty are most often those who stopped coming for tests. If you are the son or daughter helping, the single most useful thing you can do is make sure every test happens on time and every result reaches the haematologist.
Do not restart or change a tablet on your own when you see a result. Contact your haematologist the same week so the restart is planned properly.Two very different things
Is a rise on the test the same as the leukaemia returning fully?
Molecular relapse (the usual kind)
Full return of the disease (rare with good testing)
Found only on the BCR-ABL blood test
Shows on ordinary blood counts too
Usually no symptoms at all
May bring tiredness, sweats, weight loss or a swollen spleen
Tablet restarted, usually the same one
Tablet restarted, with fuller tests of the disease phase
Caught early by keeping to the testing schedule
More likely when tests are missed or delayed
Not sure whether this applies to you?
Ask an oncologistAfter a rising result
What usually happens from the result to control again?
-
The result is checked
A small rise that stays below the agreed line may just be watched with an earlier repeat test. A rise above it leads to a restart conversation.
-
You meet your haematologist
They explain the result, confirm the restart and tell you which tablet to take. Often it is the one you were on before.
-
The tablet is restarted
You start on the date and in the way your haematologist sets. Any old side effects may return, often more mildly.
-
Close testing continues
BCR-ABL is checked regularly to confirm it is falling again. Blood counts may be checked too.
-
If the level does not fall
Your team looks at missed doses, may send a mutation test, and may discuss a different TKI.
When and why
When does CML tend to return after stopping?
Patterns seen in studies, not predictions for any one person.
Most rises come early
In people who relapse, the rise is usually seen in the first months after stopping. That is why testing is most frequent then.
Late rises can still happen
A smaller number of people see BCR-ABL rise after a long stretch off treatment. Testing continues for the long term, less often.
What seems to make a difference
Studies suggest a longer time on a TKI and a longer, deeper response before stopping are linked with staying off treatment.
Less clear
- Which TKI you were on
- Age and other health factors
What does not cause it
Food, stress, travel or fasting do not bring CML back. It reflects how the remaining leukaemia cells behave.
Leave a number, we will call you
One field. No form to fill in, and no charge for the call.
Did you know
Some people have a second attempt at stopping after a long period back on treatment with a deep response again. The evidence for this is still small, so it is a careful conversation with your haematologist, not a routine step.
Commonly believed
What do families fear about a relapse that is not true?
"Now it has come back, the tablet will not work any more."
For most people who restart promptly, the same tablet works again. Resistance after a supervised stop is uncommon, and your team will test for it if the level does not fall.
"Stopping was a mistake and has made things worse."
A planned, closely tested attempt is a recognised option. A rise caught early and treated promptly does not usually change the long-term picture.
"We will wait for the next test to see if it goes down by itself."
Once BCR-ABL has crossed the agreed line, the plan is to restart, not to wait and hope. Delays can let the leukaemia grow.
"He feels fine, so the test must be wrong."
Feeling well is expected with a molecular relapse. The blood test finds the change long before symptoms would. That is exactly its purpose.
Being straight with you
What can this page not tell you, and what should you ask?
It cannot tell you whether your own rise will respond quickly, or whether you could try stopping again later. Those answers depend on your full BCR-ABL history, which tablet you were on, how long you had a deep response, and how the level moves after restarting.
When the rise is not the usual kind
If tests were missed and the leukaemia is found late, or blood counts are abnormal, the plan may include a bone marrow test to check the phase of disease. If you notice unusual tiredness, sweats, bruising or a swelling under your left ribs, contact your haematologist promptly rather than waiting for the next test.
Questions worth asking
Which line did my result cross? Am I restarting the same tablet, and why? How soon will the next test be? Would you consider another attempt in future? Write the answers down, and keep the reports in date order so the whole story is easy to follow.
CION's haematology team reviews CML results with a tumour board and can help you understand a rise and plan the restart.Questions we are asked
Common questions about CML relapse after stopping
How will I know if CML has come back?
Almost always through your scheduled BCR-ABL blood test, not through symptoms. That is why keeping every test appointment matters so much after stopping. Your haematologist will tell you the agreed line and contact you, or ask you to come in, if a result crosses it.
Will I go back on the same tablet?
Usually yes, if it worked well and you tolerated it. Your haematologist may choose a different one if side effects were a problem before, or if your health has changed. The decision is theirs to explain and yours to understand before you restart.
How long does it take for BCR-ABL to fall again?
For most people who restart promptly, the level falls back within a few months, though this varies. Your haematologist will test regularly and explain what they expect to see at each check. If the fall is slower than expected, they will look into why.
Does a relapse mean my CML is getting worse?
A molecular relapse caught on routine testing usually does not mean the disease has moved to a more advanced phase. Your blood counts are usually normal. If there is any doubt, your team may do extra tests to check the phase before deciding the plan.
Can I try stopping again later?
Sometimes. A second attempt may be discussed after a long period back on treatment with a deep, steady response. Evidence is more limited than for first attempts. Your haematologist will weigh your history and preferences before suggesting it.
Will the withdrawal aches stop when I restart?
Many people find the muscle and joint aches from stopping ease once the tablet is restarted, though old side effects may return instead. Tell your haematologist how you feel at each visit, so they can help with whichever symptoms are troubling you.
My mother is very upset about the result. How can we help?
Remind her that a rise was a known possibility, it was caught early because she kept her tests, and restarting usually brings control back. Go with her to the appointment and ask the haematologist to explain the plan. Feeling upset is normal, and it helps to say so.
Will restarting the tablet cost the same as before?
Usually, if it is the same tablet, though prices and supply change. Ask whether Aarogyasri, PM-JAY, CGHS, ECHS, EHS or your insurer covers it, and check the current rules. Plan for steady monthly supply, because gaps after a relapse are exactly what you want to avoid.
Your Haematologist
Meet CION's haematologist. One specialist for your blood report and your plan.
Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
Want a specific doctor for your case? Mention them when booking.
Book Free ConsultationBook an appointment with our specialist
Share your name and number — we'll call you back within 30 minutes to schedule your consultation.
Sources
- Leukemia & Lymphoma Society — Chronic Myeloid Leukemia
- American Cancer Society — Chronic Myeloid Leukemia (CML)
- National Cancer Institute — Chronic Myeloid Leukemia Treatment (PDQ) - Patient Version
- Blood Cancer UK — Chronic myeloid leukaemia (CML)
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
Treatment-Free Remission: Who Can Try StoppingWho is suited to an attempt and how it runsMajor Molecular Response ExplainedThe level most often used as the restart lineBCR-ABL Mutation Testing After TKI FailureWhy a test may follow if the level does not fallChronic Myeloid Leukaemia (CML)The full CML guide
Talk to us
Has your BCR-ABL risen after stopping?
Share your results with us. CION's haematology team will explain what the rise means and help plan the restart.