What is chronic myeloid leukaemia (CML)?
Chronic myeloid leukaemia (CML) is a type of blood cancer where myeloid cells in your bone marrow make too many granulocytes (a type of white blood cell). Over time, these damaged cells fill up your bone marrow, preventing it from producing all types of healthy blood cells. You might hear CML also called chronic granulocytic leukaemia (CGS).
Facts about CML
- Around 750 people are diagnosed with CML each year in the UK.
- CML is more common in people over the age of 60.
- There were 59 stem cell transplants in the UK to treat CML in 2021.
CML and stem cell transplants
Most patients with CML are diagnosed during the chronic phase, when treatment with a type of drug called Tyrosine Kinase Inhibitors (TKIs) is possible. You can find out more about the different phases of CML and possible treatments on the Leukaemia Care website.
A stem cell transplant is only recommended:
- if you have CML that hasn’t responded to TKIs, or
- if you are diagnosed with ‘blast crisis’ CML and treatment gets you back to ‘chronic’ phase CML.
If you do need a transplant, it will be an allogeneic transplant – when stem cells are donated to you by someone else.
Information published: 24/01/23
Next review due: 24/01/24