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Chronic lymphoid leukemia (CLL) is the most common type of leukemia in North America, with an incidence of 5 cases per 100,000 people. It is mainly a leukemia affecting adults, with an average age at diagnosis of 72 years (1). Although it remains incurable, this cancer usually progresses very slowly and, in many cases, becomes a chronic condition that does not compromise patient survival. Download the column