Vol 8, No 1 (2017)
Review paper
Published online: 2017-05-02

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The role of venetoclax in the treatment of patients with chronic lymphocytic leukemia

Bartosz Puła1, Krzysztof Jamroziak1
Hematologia 2017;8(1):20-32.

Abstract

The ability to avoid apoptosis is regarded as one of the main hallmarks of neoplastic diseases and is often related to therapy resistance. Proteins of the BCL2 family are known as key regulators of apoptosis. Numerous research points to their expression deregulation in lymphoid derived neoplastic diseases. BCL2 was shown to be upregulated in chronic lymphocytic leukemia (CLL) cells and identified as key mechanism responsible for resistance towards apoptosis. Up until now, conducted trials aimed at targeting the proteins expression or its activity with oligonucleotides or unspecific inhibitors did not meet the expectations. Development of a specific BCL2 inhibitor, venetoclax, may be a potential breakthrough in the therapy of relapsed and refractory CLL. In this publication the mechanism of action, clinical effectiveness and adverse event profile of BCL2 inhibitors treatment is discussed.

References

  1. Cramer P, Langerbeins P, Eichhorst B, et al. Advances in first-line treatment of chronic lymphocytic leukemia: current recommendations on management and first-line treatment by the German CLL Study Group (GCLLSG). Eur J Haematol. 2016; 96(1): 9–18.
  2. Eichhorst B, Robak T, Montserrat E, et al. ESMO Guidelines Committee. Chronic lymphocytic leukaemia: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up. Ann Oncol. 2015; 26 Suppl 5: v78–v84.
  3. Bialopiotrowicz E, Juszczyński P. Molekularna patogeneza przewlekłej białaczki limfocytowej. Hematologia. 2016; 7(4): 273–286.
  4. Hallek M. Chronic lymphocytic leukemia: 2015 Update on diagnosis, risk stratification, and treatment. Am J Hematol. 2015; 90(5): 446–460.
  5. Rai KR, Jain P. Chronic lymphocytic leukemia (CLL)-Then and now. Am J Hematol. 2016; 91(3): 330–340.
  6. Stilgenbauer S, Furman RR, Zent CS. Management of chronic lymphocytic leukemia. Am Soc Clin Oncol Educ Book. 2015: 164–175.
  7. Coutré SE, Furman RR, Flinn IW, et al. Extended treatment with single-agent ibrutinib at the 420 mg dose leads to durable responses in chronic lymphocytic leukemia/small lymphocytic lymphoma. Clin Cancer Res. 2017; 23(5): 1149–1155.
  8. Furman RR, Sharman JP, Coutre SE, et al. Idelalisib and rituximab in relapsed chronic lymphocytic leukemia. N Engl J Med. 2014; 370(11): 997–1007.
  9. Hanahan D, Weinberg RA. Hallmarks of cancer: the next generation. Cell. 2011; 144(5): 646–674.
  10. Del Gaizo Moore V, Brown JR, Certo M, et al. Chronic lymphocytic leukemia requires BCL2 to sequester prodeath BIM, explaining sensitivity to BCL2 antagonist ABT-737. J Clin Invest. 2007; 117(1): 112–121.
  11. Huang Y, Wu JZ, Li JY, et al. Know the enemy as well as the weapons in hand: the aberrant death pathways and therapeutic agents in chronic lymphocytic leukemia. Am J Cancer Res. 2015; 5(8): 2361–2375.
  12. Roberts AW, Huang D. Targeting BCL2 with BH3 mimetics: basic science and clinical application of venetoclax in chronic lymphocytic leukemia and related B cell malignancies. Clin Pharmacol Ther. 2017; 101(1): 89–98.
  13. Letai A, Bassik MC, Walensky LD, et al. Distinct BH3 domains either sensitize or activate mitochondrial apoptosis, serving as prototype cancer therapeutics. Cancer Cell. 2002; 2(3): 183–192.
  14. Chittenden T, Flemington C, Houghton AB, et al. A conserved domain in Bak, distinct from BH1 and BH2, mediates cell death and protein binding functions. EMBO J. 1995; 14(22): 5589–5596.
  15. Wolter KG, Hsu YT, Smith CL, et al. Movement of Bax from the cytosol to mitochondria during apoptosis. J Cell Biol. 1997; 139(5): 1281–1292.
  16. Chittenden T, Harrington EA, O'Connor R, et al. Induction of apoptosis by the Bcl-2 homologue Bak. Nature. 1995; 374(6524): 733–736.
  17. Zha J, Harada H, Osipov K, et al. BH3 domain of BAD is required for heterodimerization with BCL-XL and pro-apoptotic activity. J Biol Chem. 1997; 272(39): 24101–24104.
  18. Cheng EH, Wei MC, Weiler S, et al. BCL-2, BCL-X(L) sequester BH3 domain-only molecules preventing BAX- and BAK-mediated mitochondrial apoptosis. Mol Cell. 2001; 8(3): 705–711.



Hematology in Clinical Practice