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Our 24/7 cancer helpline provides support for people dealing with cancer. We can connect you with trained cancer information specialists who will answer questions about a cancer diagnosis and provide guidance and a compassionate ear.
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At our National Cancer Information Center trained Cancer Information Specialists can answer questions 24 hours a day, every day of the year to empower you with accurate, up-to-date information to help you make educated health decisions. We connect patients, caregivers, and family members with valuable services and resources.
Or ask us how you can get involved and support the fight against cancer. Some of the topics we can assist with include:
For medical questions, we encourage you to review our information with your doctor.
Chronic Lymphocytic Leukemia (CLL)
The American Cancer Society's estimates for leukemia in the United States for 2023 are:
CLL accounts for about one-quarter of the new cases of leukemia. The average person's lifetime risk of getting CLL is about 1 in 175 (0.57%). The risk is slightly higher in men than in women.
CLL mainly affects older adults. The average age of people when they are diagnosed is around 70 years. It's rarely seen in people under age 40, and is extremely rare in children.
Visit the American Cancer Society’s Cancer Statistics Center for more key statistics.
The American Cancer Society medical and editorial content team
Our team is made up of doctors and oncology certified nurses with deep knowledge of cancer care as well as journalists, editors, and translators with extensive experience in medical writing.
American Cancer Society. Cancer Facts & Figures 2023. Atlanta, Ga: American Cancer Society; 2023.
Cancer Stat Facts: Leukemia-Chronic Lymphocytic Leukemia, 2010-2014. National Cancer Institute, Bethesda, MD. https://seer.cancer.gov/statfacts/html/clyl.html. Accessed on January 5, 2018.
SEER Lifetime Risk (Percent) of Being Diagnosed with Cancer by Site and Race/Ethnicity: Both Sexes, 18 SEER Areas, 2012-2014 (Table 1.15) National Cancer Institute, Bethesda, MD. Accessed at https://seer.cancer.gov/csr/1975_2014/results_merged/topic_lifetime_risk.pdf on January 5, 2018.
Last Revised: January 12, 2023
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