Pathways and mechanisms of venetoclax resistance. Issue 9 (2nd September 2017)

• Record Type: Journal Article
• Authors: Bose, Prithviraj; Gandhi, Varsha; Konopleva, Marina
• Is Part Of: Leukemia & lymphoma. Volume 58:Issue 9(2017)
• Page Start: 2026
• Page End: 2039
• Publication Date: 2017-09-02
• Subjects: Venetoclax -- resistance -- BCL-2 -- MCL-1 -- BCL-XL -- rational combinations; Leukemia -- Periodicals; Lymphomas -- Periodicals; 616.99419
• DOI: 10.1080/10428194.2017.1283032
• Languages: English
• ISSNs: 1042-8194

Abstract

Abstract: The approval of venetoclax, a 'BH3-mimetic' antagonist of the BCL-2 anti-apoptotic protein, for chronic lymphocytic leukemia represents a major milestone in translational apoptosis research. Venetoclax has already received 'breakthrough' designation for acute myeloid leukemia, and is being studied in many other tumor types. However, resistance to BCL-2 inhibitor monotherapy may rapidly ensue. Several studies have shown that the other two major anti-apoptotic BCL-2 family proteins, BCL-XL and MCL-1, are the main determinants of resistance to venetoclax. This opens up possibilities for rationally combining venetoclax with other targeted agents to circumvent resistance. Here, we summarize the most promising combinations, and highlight those already in clinical trials. There is also increasing recognition that different tumors display different degrees of addiction to individual BCL-2 family proteins, and of the need to refine current 'BH3 profiling' techniques. Finally, the successful clinical development of potent and selective antagonists of BCL-XL and MCL-1 is eagerly awaited.