Zanubrutinib
Zanubrutinib is a potent and highly selective small molecule inhibitor of Bruton’s tyrosine kinase (BTK).1
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Bruton’s tyrosine kinase (BTK) is a component of the B-cell receptor (BCR) signaling pathway and is an important regulator of cell proliferation and cell survival in various B cell malignancies including chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), Waldenström’s macroglobulinemia (WM) and marginal zone lymphoma (MZL). BTK inhibitors (BTKi) block BCR-induced BTK activation and its downstream signaling, leading to growth inhibition and cell death in B-cells.7
Zanubrutinib is an orally active inhibitor that covalently binds cysteine 481 in the adenosine triphosphate (ATP) binding pocket of BTK leading to irreversible inactivation of the enzyme.p Zanubrutinib was designed to minimize off-target inhibition of TEC and EGFR family kinases. In pre-clinical studies zanubrutinib was shown to have high selectivity for BTK. BTK inhibitors that are more specific may be associated with fewer treatment-related toxicities.p
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For an exhaustive list of zanubrutinib monotherapy and combination clinical trials, view the 4?{?$_%G?i[ 7ov}o%#.
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- Tam, C. S. 6T ,H. Phase 1 study of the selective BTK inhibitor zanubrutinib in B-cell malignancies and safety and efficacy evaluation in CLL. :i**W 2019;134:851–859.
- Pal Singh, S., Dammeijer, F. & Hendriks, R. W. Role of Bruton’s tyrosine kinase in B cells and malignancies. \*}. h~!tyS 2018;17:57.