What is chronic myeloid leukaemia (CML)?

Chronic myeloid leukaemia (CML) is a type of cancer that affects the blood and bone marrow. It usually develops very slowly. 

Symptoms of chronic myeloid leukaemia (CML)

You might not have symptoms when you are diagnosed. Your CML may be picked up during a routine blood test. 

Getting diagnosed with chronic myeloid leukaemia (CML)

Your GP will ask you about your symptoms and might arrange an urgent blood test or refer you to a specialist.

Survival for chronic myeloid leukaemia (CML)

Survival depends on many factors. These figures can only give you a general guide about survival for CML.

Treatment for chronic myeloid leukaemia (CML)

There are different targeted drug treatments for CML. Your specialist doctor will talk with you about your treatment options. 

Stages (phases) of chronic myeloid leukaemia (CML)

CML is divided into 3 phases: chronic, accelerated and blast. Knowing the phase helps your doctor decide which treatment you need.

Research and clinical trials for chronic myeloid leukaemia (CML)

Research is looking into the causes and treatment of CML. Find out about the latest UK research and how you can take part in trials.

Living with chronic myeloid leukaemia (CML)

Chronic myeloid leukaemia (CML) is often a slowly developing condition. Treatment can keep it under control for many years. Find out how to cope and what support is available.

Risks and causes of chronic myeloid leukaemia (CML)

We don’t know what causes most cases of CML. But there are some factors that may increase your risk of developing it. 

Last reviewed: 
16 Jun 2022
Next review due: 
16 Jun 2025