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Can CMML-1 progress to CMML-2?

Yes, CMML-1 can progress to CMML-2. The difference between these subtypes is based on the percentage of blast cells (immature cells) in your blood and bone marrow.

CMML-1 has:
- 2% to 4% blasts in the blood, or
- 5% to 9% blasts in the bone marrow

CMML-2 has
- 5% to 19% blasts in the Show Full Answer

Can CMML-1 progress to CMML-2?

Yes, CMML-1 can progress to CMML-2. The difference between these subtypes is based on the percentage of blast cells (immature cells) in your blood and bone marrow.

CMML-1 has:
- 2% to 4% blasts in the blood, or
- 5% to 9% blasts in the bone marrow

CMML-2 has:
- 5% to 19% blasts in the blood, and
- 10% to 19% blasts in the bone marrow

As blast cell levels increase over time, CMML-1 can advance to CMML-2. This progression typically means the disease is becoming more aggressive.

It's also important to know that CMML can progress further to acute myeloid leukemia (AML). About 18% of people with type 0 or 1 CMML develop AML within five years, while about 63% of people with type 2 CMML are diagnosed with AML within five years.

Regular monitoring of your blood counts and bone marrow can help your healthcare team track any changes in your condition.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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