Learn About Chronic Myelomonocytic Leukemia (CMML)

View Main Condition: Leukemia

What is the definition of Chronic Myelomonocytic Leukemia (CMML)?

PDGFRB-associated chronic eosinophilic leukemia is a type of cancer of blood-forming cells. It is characterized by an elevated number of white blood cells called eosinophils in the blood. These cells help fight infections by certain parasites and are involved in the inflammation associated with allergic reactions. However, these circumstances do not account for the increased number of eosinophils in PDGFRB-associated chronic eosinophilic leukemia. Some people with this condition have an increased number of other types of white blood cells, such as neutrophils or mast cells, in addition to eosinophils. People with this condition can have an enlarged spleen (splenomegaly) or enlarged liver (hepatomegaly). Some affected individuals develop skin rashes, likely as a result of an abnormal immune response due to the increased number of eosinophils.

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What are the causes of Chronic Myelomonocytic Leukemia (CMML)?

PDGFRB-associated chronic eosinophilic leukemia is caused by genetic rearrangements that join part of the PDGFRB gene with part of another gene. At least 20 genes have been found that fuse with the PDGFRB gene to cause PDGFRB-associated chronic eosinophilic leukemia. The most common genetic abnormality in this condition results from a rearrangement (translocation) of genetic material that brings part of the PDGFRB gene on chromosome 5 together with part of the ETV6 gene on chromosome 12, creating the ETV6-PDGFRB fusion gene.

How prevalent is Chronic Myelomonocytic Leukemia (CMML)?

The exact prevalence of PDGFRB-associated chronic eosinophilic leukemia is unknown. For unknown reasons, males are up to nine times more likely than females to develop PDGFRB-associated chronic eosinophilic leukemia.

Is Chronic Myelomonocytic Leukemia (CMML) an inherited disorder?

PDGFRB-associated chronic eosinophilic leukemia is not inherited and occurs in people with no history of the condition in their families. Chromosomal rearrangements that lead to a PDGFRB fusion gene are somatic mutations, which are mutations acquired during a person's lifetime and present only in certain cells. The somatic mutation occurs initially in a single cell, which continues to grow and divide, producing a group of cells with the same mutation (a clonal population).

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What are the latest Chronic Myelomonocytic Leukemia (CMML) Clinical Trials?
A Phase II Study of Azacitidine, Venetoclax and Trametinib for Patients With Acute Myeloid Leukemia or Higher-Risk Myelodysplastic Syndrome

Summary: This phase II trial investigates how well azacitidine, venetoclax, and trametinib work in treating patients with acute myeloid leukemia or higher-risk myelodysplastic syndrome that has come back (relapsed) or has not responded to treatment (refractory). Chemotherapy drugs, such as azacitidine, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them ...

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Salsalate + Venetoclax/Decitabine for Patients With Acute Myelogenous Leukemia or Advanced Myelodysplasia/Myeloproliferative Disease

Summary: This phase II trial studies the side effects of salsalate when added to venetoclax and decitabine or azacitidine in treating patients with acute myeloid leukemia or myelodysplasia/myeloproliferative disease that has spread to other places in the body (advanced). Drugs used in chemotherapy, such as salsalate, venetoclax, decitabine, and azacitidine work in different ways to stop the growth of cance...

Who are the sources who wrote this article ?

Published Date: February 01, 2013Published By: National Institutes of Health

What are the Latest Advances for Chronic Myelomonocytic Leukemia (CMML)?
AML-397 Integrated Safety Analysis of Tagraxofusp, a CD123-Directed Targeted Therapy, in Patients With Hematologic Malignancies.
MDS-520 A Phase I/II Study of Venetoclax in Combination With ASTX727 (Decitabine/Cedazuridine) in Treatment-Naïve High-Risk Myelodysplastic Syndrome (MDS) or Chronic Myelomonocytic Leukemia (CMML).
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Real-world data on efficacy and safety of azacitidine therapy in chronic myelomonocytic leukemia in China: results from a multicenter, retrospective study.