Chronic myelomonocytic leukaemia (CMML)
Chronic myelomonocytic leukaemia (CMML) affects different types of blood cells, but particularly white blood cells called monocytes.

CMML explained
Find out how CMML develops, which other blood cancers it's related to and what we know about the causes of CMML.
What is CMML?

Prognosis for CMML
Read about the general prognosis for CMML. Your own prognosis (what is likely to happen in the future) is personal to you.
Find out more

CMML symptoms and diagnosis
Learn about common symptoms of CMML and how it's diagnosed, including tests you are likely to have.
Symptoms and tests

Treatment for CMML
When you need treatment for CMML, it's most likely to be a type of chemotherapy. You may not need treatment right away.
More about treatment

Living well with CMML
You can live a full life after a CMML diagnosis. Find out where to get practical and emotional support.
Living your life
First published April 2025. Next full review due April 2028. We may make factual updates to this information in between reviews.
We would like to thank Consultant Haematologist Kavita Raj for checking the medical content of our CMML information, and Consultant Haematologist Dan Wiseman for reviewing an early draft.