Hairy cell leukemia epidemiology and demographics

Hairy cell leukemia is relatively rare, accounting for 1.4% of all lymphomas. The incidence of hairy cell leukemia is approximately 2.8-3.0 per 1,000,000 individuals in the United States. The incidence of hairy cell leukemia increases with age. The median age range at diagnosis of hairy cell leukemia is 55 to 60 years. Males are more commonly affected with hairy cell leukemia than females. The male to female ratio is approximately 4 to 1.

• Hairy cell leukemia is considered one of the least common types of leukemias in the United States.
• Hairy cell leukemia accounts for 1.4% of all lymphomas. ^[1]

• The incidence of hairy cell leukemia is approximately 2.8-3.0 per 1,000,000 individuals in the United States.^[1]
• For the past 30 years, the incidence of hairy cell leukemia has been relatively constant.

• The incidence of hairy cell leukemia increases with age.
• The median age range at diagnosis of hairy cell leukemia is 55 to 60 years.^[2]

• Males are more commonly affected with hairy cell leukemia than females.
• The male to female ratio is approximately 4 to 1.^[3]

• Hairy cell leukemia usually affects individuals of European Ancestry.
• Asian and African American individuals are less likely to develop hairy cell leukemia.^[4]

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