Chronic Lymphocytic Leukemia Fund

Chronic Lymphocytic Leukemia is a type of cancer that affects a specific kind of white blood cell called B-lymphocytes, which are part of the immune system.

CLL primarily affects older adults, usually those over 60 years old. It is more common in men than in women. This is the most common form of leukemia in adults. Often people discover this disease during routine blood tests that start showing an increased number of lymphocytes (type of cell). As the disease progresses people may experience fatigue, weight loss and frequent infections.

Approximately 20,000 new cases of CLL are diagnosed each year in the United States. It is the most common type of leukemia in adults, with an estimated 200,000 people living with the disease in the US currently.