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Chronic lymphocytic leukemia
What's new
Updated 2024 ESMO guidelines for targeted therapy in first-line treatment and relapse of chronic lymphocytic leukemia .
Background
Overview
Definition
CLL is a lymphoproliferative malignancy characterized by peripheral lymphocytosis due to the proliferation of clonal B cells.
1
Pathophysiology
CLL is caused by somatic gene mutations involving multipotent and self-renewing hematopoietic stem cells, which leads to clonal proliferation and accumulation of mature B cells.
2
Epidemiology
The incidence of CLL in the US is estimated at 4.83 per 100,000 person-years.
3
Disease course
Accumulation of B cells in the bone marrow, blood, lymph nodes, and spleen can result in cytopenias, lymphadenopathy, splenomegaly, hepatomegaly, susceptibility to infection, bone marrow failure, and death.
2
Prognosis and risk of recurrence
The overall survival at 5-years for patients with low-risk, intermediate-risk, high-risk, and very-high risk CLL is 93.2%, 79.4%, 63.6%, and 23.3%, respectively.
4
Guidelines
Key sources
The following summarized guidelines for the evaluation and management of chronic lymphocytic leukemia are prepared by our editorial team based on guidelines from the American Society for Transplantation and Cellular Therapy & Cell Therapy Transplant Canada (ASTCT 2024), the European Society of Medical Oncology (ESMO 2024,2021), the Canadian Expert Group on Chronic Lymphocytic Leukemia (CLL-CEG 2023), the British Society for ...
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