Acute lymphoblastic leukaemiaTreatment

Acute lymphoblastic leukaemia is an aggressive condition that develops quickly, so treatment usually begins a few days after diagnosis.

Acute lymphoblastic leukaemia is an aggressive condition that develops quickly, so treatment usually begins a few days after diagnosis.

Stages of treatment

Treatment for acute lymphoblastic leukaemia is usually carried out in 3 stages.

They are:

  • induction – the aim of the initial stage of treatment is to kill the leukaemia cells in your bone marrow, restore the balance of cells in your blood, and resolve any symptoms you may have
  • consolidation – this stage aims to kill any remaining leukaemia cells in your central nervous system
  • maintenance – the final stage involves taking regular doses of chemotherapy tablets to prevent the leukaemia returning


The induction stage of treatment is carried out in hospital or a specialist centre.

This is because you'll probably need regular blood transfusions as your blood won't contain enough healthy blood cells.

You'll also be vulnerable to infection, so it's important you're in a sterile environment where your health can be carefully monitored and any infection that develops can be treated quickly.

Antibiotics may also be prescribed to help prevent further infection.


You'll have chemotherapy to kill the leukaemia cells in your bone marrow.

Although some medications may be given as pills, you'll need more than 1 medication given as an injection.

To make things easier and avoid repeated injections, they can all be given through a flexible tube (a central line) that goes into a vein in your chest.

Some chemotherapy medication may also be directly administered into your cerebrospinal fluid to kill any leukaemia cells that may have spread to your nervous system and brain. 

The type of chemotherapy medication used is called methotrexate. It's given as an injection into your spine, in a similar way to a lumbar puncture.

After you have had the injection, you'll have to lie flat for a few hours with your head positioned slightly lower than your feet. You may have a headache or feel sick afterwards.

Methotrexate is also given directly into a vein (intravenously) in adults with acute lymphoblastic leukaemia after induction therapy and before consolidation.

Other common side effects following chemotherapy include:

The side effects should resolve once treatment has finished. Your hair will usually take between 3 and 6 months to grow back.

Steroid therapy

You may also be given corticosteroid injections or tablets to help improve the effectiveness of chemotherapy.


If you have a type of leukaemia known as Philadelphia chromosome-positive acute lymphoblastic leukaemia, you'll also be given a medicine called imatinib.

Imatinib is what's known as a targeted therapy, which works by blocking the signals in the cancerous cells that cause them to grow and reproduce. This kills the cancerous cells.

Imatinib is taken orally (as a tablet). The side effects of imatinib are usually mild and should improve over time.

They include:

  • nausea
  • vomiting
  • swelling in the face and lower legs
  • muscle cramps
  • rash
  • diarrhoea

Depending on how well you respond to treatment, the induction phase can last from 2 weeks to several months.

In some cases, you or your child may be able to leave hospital and receive treatment on an outpatient basis if your symptoms improve.


Leukaemia can return if just 1 cancerous cell remains in your body.

The aim of consolidation treatment is to ensure that any remaining leukaemia cells are killed.

Treatment involves receiving regular injections of chemotherapy medication.

This is usually done on an outpatient basis, which means you won't have to stay in hospital overnight.

But you may need some short stays in hospital if your symptoms suddenly get worse or you develop an infection.

The consolidation phase of treatment lasts several months.


The maintenance phase is designed to act as further insurance against the possibility of the leukaemia returning.

It involves taking regular doses of chemotherapy tablets while having regular check-ups to monitor the effectiveness of your treatment.

The maintenance phase can often last for 2 years.

Other treatments

As well as chemotherapy and imatinib, other treatments are used in some circumstances.

These are described below. 

Targeted therapies

If other treatments don't work, your cancer comes back or you have a certain type of acute lymphoblastic leukaemia, you may be offered another kind of targeted therapy.

There are several types of targeted therapy. Your doctors and specialists will talk to you about these if they think they might work for you.

Cancer Research UK has more information about targeted cancer drug therapies for cancer treatment.


Radiotherapy is where high doses of controlled radiation are used to kill cancerous cells.

It's usually used to treat acute leukaemia in the following 2 situations: 

  • to treat advanced cases of acute lymphoblastic leukaemia that have spread to the nervous system or brain
  • to prepare the body for a bone marrow transplant

Side effects include:

  • hair loss
  • nausea
  • fatigue

These side effects should pass after your course of radiotherapy has been completed.

But your skin may be very sensitive to the effects of light for several months after treatment has finished.

If this is the case, avoid sunbathing or exposure to sources of artificial light, such as sunbeds, for several months.

Many younger children treated with radiotherapy will go on to have restricted physical growth during puberty.

A small number of people develop cataracts several years after having radiotherapy.

Cataracts are cloudy patches in the transparent structure at the front of the eye (the lens) that can make your vision blurred or misty.

They can usually be successfully treated using cataract surgery.

Stem cell and bone marrow transplants

stem cell and bone marrow transplant is a possible alternative treatment option if you or your child don't respond to chemotherapy.

Transplantations are more successful if the donor has the same tissue type as you, so the ideal donor is usually a brother or sister.

Before transplantation can take place, the person receiving the transplant will need to have aggressive high-dose chemotherapy and radiotherapy to destroy any cancerous cells in their body.

This can put a big strain on the body, so transplantations are usually only successful when they're carried out in:

  • children and young people
  • older people in good health
  • when there's a suitable donor, such as a brother or sister

Recent research has shown it's possible for people over the age of 40 to have a reduced intensity stem cell transplant. 

This is where lower than normal doses of chemotherapy and radiotherapy are used before the transplant, which places less strain on the body.

Clinical trials

In the UK, clinical trials are currently being carried out to find the best way of treating acute leukaemia.

These studies are using innovative new techniques to see how well they work in treating and possibly curing acute leukaemia.

It's important to be aware of new studies so you can choose which treatments to have.

But there's no guarantee the techniques being studied in the clinical trial will be more effective than current treatments.

Your care team will be able to tell you whether there are any clinical trials available in your area, and can explain the benefits and risks involved.

Page last reviewed: 04/10/2016
Next review due: 04/10/2019