Ibrutinib: a first in class covalent inhibitor of Bruton's tyrosine kinase.

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Davids MS, Brown JR

Ibrutinib: a first in class covalent inhibitor of Bruton's tyrosine kinase.

Future Oncol. 2014 May;10(6):957-67. doi: 10.2217/fon.14.51.

PubMed ID
24941982 [ View in PubMed
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Abstract

Ibrutinib (formerly PCI-32765) is a potent, covalent inhibitor of Bruton's tyrosine kinase, a kinase downstream of the B-cell receptor that is critical for B-cell survival and proliferation. In preclinical studies, ibrutinib bound to Bruton's tyrosine kinase with high affinity, leading to inhibition of B-cell receptor signaling, decreased B-cell activation and induction of apoptosis. In clinical studies, ibrutinib has been well-tolerated and has demonstrated profound anti-tumor activity in a variety of hematologic malignancies, most notably chronic lymphocytic leukemia (CLL) and mantle cell lymphoma (MCL), leading to US FDA approval for relapsed CLL and MCL. Ongoing studies are evaluating ibrutinib in other types of non-Hodgkin's lymphoma, such as diffuse large B-cell lymphoma and Waldenstrom's macrogobulinemia, in larger Phase III studies in CLL and MCL, and in combination studies with monoclonal antibodies and chemotherapy. Future studies will combine ibrutinib with other promising novel agents currently in development in hematologic malignancies.

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