Chronic Myelomonocytic Leukemia (CMML) | Learn About Cancer | American Cancer Society
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Chronic Myelomonocytic Leukemia (CMML)

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Chronic myelomonocytic leukemia (CMML) is a type of cancer that starts in blood-forming cells of the bone marrow and invades the blood. It affects mainly older adults.


Learn About Chronic Myelomonocytic Leukemia

Whether you’re worried about developing chronic myelomonocytic leukemia, making decisions about treatment, or trying to stay well after treatment, we can help. Find information in our Detailed Guide.

Chronic Myelomonocytic Leukemia Causes and Risk Factors

Learn about the causes of chronic myelomonocytic leukemia and what you might be able to do to help lower your risk.

Chronic Myelomonocytic Leukemia Treatment and Support

If you are facing chronic myelomonocytic leukemia, we can help you learn about your treatment options and possible side effects, and point you to information and services to help you get through treatment and live well afterward.

Explore Research

The American Cancer Society is committed to relentlessly pursuing the answers that will save lives from leukemia. In fact, the Society has been a part of nearly every major cancer research breakthrough in recent history. 

Get Involved

You can make a difference in the fight against cancer by volunteering your time, participating in an event, or donating to the cause. Find out about all the ways you can get involved today. 

Stories of Hope

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Read inspiring stories of people living with leukemia.

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Online Support Communities

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Facing leukemia?  Connect with others and get support through our online communities, Cancer Survivors Network and

Cancer in the News

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Get the latest news on how to cope with cancer in everyday life.

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