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2016•Therapeutic Advances in HematologyOpen access

The potential of venetoclax (ABT-199) in chronic lymphocytic leukemia

Gilad Itchaki, Jennifer R. Brown

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Abstract

Venetoclax (VEN, ABT-199/GDC-0199) is an orally bioavailable BH3-mimetic that specifically inhibits the anti-apoptotic B-cell lymphoma/leukemia 2 (BCL2) protein. Although BCL2 overexpression is not genetically driven in chronic lymphocytic leukemia (CLL), it is nearly universal and represents a highly important and prevalent mechanism of apoptosis evasion, making it an attractive therapeutic target. This review summarizes the role of BCL2 in CLL pathogenesis, the development path targeting its inhibition prior to VEN, and the preclinical and clinical data regarding the effectiveness and safety of VEN. We further strive to contextualize VEN in the current CLL treatment landscape and discuss potential mechanisms of resistance.

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What this paper is about

Venetoclax (VEN, ABT-199/GDC-0199) is an orally bioavailable BH3-mimetic that specifically inhibits the anti-apoptotic B-cell lymphoma/leukemia 2 (BCL2) protein. Although BCL2 overexpression is not genetically driven in chronic lymphocytic leukemia (CLL), it is nearly universal and represents a highly important and prevalent mechanism of apoptosis evasion, making it an attractive therapeutic target. This review summarizes the role of BCL2 in CLL pathogenesis, the development path targeting its inhibition prior to VEN, and the preclinical and clinical data regarding the effectiveness and safety of VEN. We further strive to contextualize VEN in the current CLL treatment landscape and discuss potential mechanisms of resistance.

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Available abstract

Venetoclax (VEN, ABT-199/GDC-0199) is an orally bioavailable BH3-mimetic that specifically inhibits the anti-apoptotic B-cell lymphoma/leukemia 2 (BCL2) protein. Although BCL2 overexpression is not genetically driven in chronic lymphocytic leukemia (CLL), it is nearly universal and represents a highly important and prevalent mechanism of apoptosis evasion, making it an attractive therapeutic target. This review summarizes the role of BCL2 in CLL pathogenesis, the development path targeting its inhibition prior to VEN, and the preclinical and clinical data regarding the effectiveness and safety of VEN. We further strive to contextualize VEN in the current CLL treatment landscape and discuss potential mechanisms of resistance.

Key concepts: Venetoclax, Chronic lymphocytic leukemia, Medicine, Ven, Leukemia, Mechanism (biology), Cancer research, CD52

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The potential of venetoclax (ABT-199) in chronic lymphocytic leukemia — Research Paper | ScholarLens