Chronic myelomonocytic leukemia (CMML) is rare, only occurring in 4 of every million people in the United States each year. That works out to about 1,100 cases each year.
This disease is rare in young people. Almost 9 of 10 of cases are diagnosed in people 60 and older. CMML occurs more often in men than in women.
Visit the American Cancer Society’s Cancer Statistics Center for more key statistics.