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Maintenance therapy in adult ALL: the long final phase | CION Cancer Clinics
Maintenance therapy for adult ALL usually lasts around two years after the intensive phases end. It is mostly tablets taken at home, with regular blood tests and some clinic treatment days. Its job is to clear leukaemia cells too few to show on tests and lower the chance of relapse. This page explains what it includes, what a typical month looks like, and when to get help at once. 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.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- Why is maintenance needed after remission?
- What does maintenance usually include?
- What does a typical stretch of maintenance look like?
- What do families often get wrong about maintenance?
- What do the maintenance words mean?
- Who does standard maintenance not suit, and what can this page not tell you?
- Common questions about ALL maintenance
The short answer
Why is maintenance needed after remission?
Maintenance is lower-intensity treatment, mostly tablets taken at home, that usually runs for around two years after the intensive phases end. It is there to clear the last leukaemia cells that tests cannot see, and to lower the chance of the leukaemia coming back.
Why ALL needs it when some leukaemias do not
ALL cells can sit quietly in the bone marrow and grow back slowly. Long trials in children and adults showed that a steady, gentle pressure over many months holds them down better than stopping straight after the strong courses. That is why the plan feels so long.
What it feels like compared with the early months
For most people it is far easier. You live at home, eat normally and visit the clinic for blood tests and review. Many adults go back to work or college during this phase. Tiredness, a lower appetite and a few infections along the way are common. Hospital stays become rare, though they do still happen.
Why the family's role matters so much now
In the early months, nurses gave every medicine. In maintenance, the tablets are in your hands. That shift is where many problems begin. Tablets get missed during festivals, travel or a busy week, or a weekly tablet is taken daily by mistake. A simple written chart on the fridge, a pill box and one family member who knows the plan make a real difference. If you live far from Hyderabad, ask whether some blood tests can be done closer to home and the results shared with the team.
Maintenance is not a sign that something went wrong. It is a standard part of treatment for most people with ALL.The medicines
What does maintenance usually include?
The exact mix depends on the protocol your team follows. These are the parts most adults will recognise.
Daily tablets
Mercaptopurine is the backbone of most plans. It is taken at home, usually at the same time each day. The team adjusts the amount to your blood counts.
A once-a-week tablet
Methotrexate by mouth is usually taken on one fixed day each week, not every day. Mixing up the day is a known danger, so keep a written schedule.
Periodic clinic treatment
Many protocols add a drip of vincristine with a short course of steroid tablets at intervals. Some also include spinal injections to protect the brain and spine.
Extra tablets for some types
If the leukaemia is Philadelphia-positive, a targeted tablet is often continued too.
Also common
- An antibiotic to prevent a lung infection
- Regular blood counts and liver tests
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One thing that cannot wait
Maintenance lowers the white cell count, so infections can become serious quickly. If you get a fever, shivering, or feel suddenly very unwell, go to the nearest emergency department the same day or call 108. Say you are on treatment for leukaemia. Do not wait for the next clinic visit, and do not take a fever medicine first to see if it settles.
Month to month
What does a typical stretch of maintenance look like?
Tablets at home
You take the daily and weekly tablets as written on your schedule. Keep them away from children, and store them the way the pharmacist explains. A family member can help keep track.
Blood tests
Counts and liver tests are checked regularly, more often at the start. The results decide whether the team keeps the amounts the same, lowers them or pauses for a while.
Clinic review
At visits the team asks about infections, mouth sores, tingling, yellowing of the eyes and energy. Bring the list of tablets you actually took, including any missed days.
Periodic treatment days
On some visits you may receive a drip, start a short steroid course or have a spinal injection. Most are day-care visits, and you go home the same day.
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Commonly believed
What do families often get wrong about maintenance?
"The reports are clear now, so the tablets are not really needed."
Clear reports are why maintenance works, not a reason to stop it. The cells it targets are too few to show on tests. Stopping early is one of the known reasons ALL comes back. Any change is decided by the team, never at home.
"If counts drop, the treatment has failed."
Lower counts are an expected effect of the tablets. The team aims for counts in a particular range and adjusts the plan to keep them there. A low result usually means a change in amount, not a change in outlook.
"Missing a few days here and there does not matter."
Steady tablet-taking over the whole period matters. If you miss doses, tell the team honestly rather than doubling up. They need to know what was really taken to read the blood results.
"Herbal tonics will make the tablets work better."
Some herbal and ayurvedic products affect the liver or interact with these medicines. Tell the team about anything you take before starting it.
On your schedule
What do the maintenance words mean?
- 6-MP
- Short for mercaptopurine, the daily maintenance tablet.
- Pulses
- Short, repeated bursts of vincristine and steroid given at intervals during maintenance in many protocols.
- Intrathecal
- Medicine given by a spinal injection into the fluid around the brain and spinal cord.
- Dose adjustment or hold
- The team lowering or pausing tablets because of blood counts, liver tests or an infection.
- TPMT or NUDT15 test
- A blood test for how your body handles mercaptopurine. Some people need smaller amounts because of it.
Being straight with you
Who does standard maintenance not suit, and what can this page not tell you?
Standard maintenance is built around B-cell and T-cell ALL treated with chemotherapy. It does not fit everyone in the same way.
When the plan looks different
People who have a stem cell transplant usually do not follow the same maintenance afterwards, though some receive targeted tablets. Older or frailer adults may get a gentler or shorter plan. Some people react strongly to mercaptopurine because of their genes and need very different amounts. Pregnancy planning also needs a direct conversation with the team, because several of these medicines are unsafe in pregnancy.
What this page cannot tell you
It cannot tell you your own schedule, doses or exact length of treatment. Protocols differ, and teams adjust them to your counts and results. Never start, stop or change a tablet because of something you read here. Ask your haematologist for a written plan, and keep it where the whole family can find it.
Whom to call, and when
Keep the helpline number and your treatment summary on your phone. Call the team for new mouth sores, a rash, yellow eyes or unusual bruising. Fever or feeling suddenly very unwell needs the emergency department the same day, not a phone call.
Questions we are asked
Common questions about ALL maintenance
How long does maintenance last in adult ALL?
Usually around two years from the start of maintenance, though protocols differ. Some count the time from diagnosis instead. Your team will tell you the planned end point at the start. The length may change if you have a transplant, serious side effects or a change in results.
Can I go back to work or college during maintenance?
Many adults do. Energy often returns gradually over the first months. Avoid crowded, dusty places when counts are low, keep up hand washing and plan around clinic visits. Talk to the team if your work involves heavy labour, travel, children or exposure to infections.
What if I forget to take the tablets one day?
Do not double up to make up for it. Write the missed day down and tell the team at the next contact, or call if you are unsure. Pill boxes and phone alarms help. For the once-a-week tablet, ask the team in advance what to do if you miss that day.
Why do the doctors keep changing the tablet amounts?
Because the right amount is set by your blood counts and liver tests, not fixed at the start. Too little may not hold the leukaemia down. Too much can drop counts too far. Frequent adjustment is normal and shows the team is watching closely.
Can I take vaccines during maintenance?
Some vaccines are safe and some are not. Live vaccines are generally avoided while on treatment. Family members may also need advice about vaccines. Ask the team before any vaccine, including travel vaccines, and tell any other doctor that you are on leukaemia treatment.
Are there foods I should avoid?
Eat freshly cooked, hot food and drink safe water. Avoid raw or undercooked meat and eggs and unwashed salads when counts are low. Ask the team whether milk should be taken close to mercaptopurine, and about alcohol, which can strain the liver.
Will I lose my hair again during maintenance?
Usually hair grows back during maintenance, though it may thin a little. Other effects can include tiredness, mild stomach upset, sun sensitivity and mood changes during steroid courses. Report yellow eyes, dark urine, bleeding or tingling in the hands and feet.
What happens when maintenance ends?
The tablets stop, and regular follow-up begins. Blood tests are checked at intervals, and visits become less frequent over time. Many people feel anxious when treatment stops. That is normal. Ask what symptoms should prompt an early visit, and keep the helpline number handy.
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Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- National Cancer Institute — Adult Acute Lymphoblastic Leukemia Treatment (PDQ) - Patient Version
- Cancer Research UK — Acute lymphoblastic leukaemia (ALL)
- American Cancer Society — Acute Lymphocytic Leukemia (ALL)
- Leukemia & Lymphoma Society — Acute Lymphoblastic Leukemia (ALL)
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.
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Questions about your maintenance plan?
Share your schedule and recent blood reports. CION's haematology team will talk it through with you. One helpline serves every CION centre.