Chronic lymphocytic leukemia (CLL) is a type of cancer that affects a specific type of white blood cells called B lymphocytes. It is a slow-growing cancer that typically occurs in older adults and is more common in men than women. CLL often presents with swollen lymph nodes, fatigue, weight loss, and frequent infections. Research in CLL focuses on understanding the genetic mutations and molecular pathways involved in the development and progression of the disease. This research aims to develop targeted therapies that can effectively treat CLL with fewer side effects compared to traditional chemotherapy. Additionally, studies are ongoing to identify biomarkers that can predict disease progression and guide treatment decisions. Overall, research in CLL is focused on improving outcomes for patients by developing more personalized and effective therapies based on the underlying biology of the disease.