The American Cancer Society's most recent estimates for leukemia in the United States are for 2012:
- About 47,150 new cases of leukemia and about 23, 540 deaths from leukemia (all kinds)
- About 16,060 new cases of chronic lymphocytic leukemia (CLL)
- About 4,580 deaths from CLL
CLL accounts for about one-third of all leukemias. The average person's lifetime risk of getting CLL is about 1/2 of 1% (about 1 in 200). The risk is slightly higher in men than in women. Factors such as having a family history of CLL may raise this risk.
CLL mainly affects older adults. The average age at the time of diagnosis is around 72 years. It is rarely seen in people under age 40, and is extremely rare in children.
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