期刊
FUTURE ONCOLOGY
卷 15, 期 6, 页码 579-589出版社
FUTURE MEDICINE LTD
DOI: 10.2217/fon-2018-0637
关键词
acalabrutinib; ACP-196; atrial fibrillation; bleeding; BTK inhibitors; chronic lymphocytic leukemia; ibrutinib; infection; obinutuzumab
类别
Acalabrutinib received an accelerated US FDA approval for patients with relapsed/refractory mantle cell lymphoma in 2017 and is currently being evaluated in chronic lymphocytic leukemia (CLL). To date, ibrutinib is the only Bruton tyrosine kinase (BTK) inhibitor that's approved for treatment of CLL. Acalabrutinib is a second generation BTK inhibitor that binds covalently to the Cys481 residue on BTK and has half maximal inhibitory concentration (IC50) of 3nM. In preclinical mouse models, acalabrutinib significantly reduced proliferation of CLL cells. Results of Phase I/II trials revealed overall response rates (ORR) of 96% in treatment-naive, 93% in relapsed/refractory and 76% in ibrutinib intolerant patients with CLL. The most common adverse effects (>20%) were grade 1-2 comprising constitutional symptoms, GI toxicity, rash and myelosuppression. There were limited grade 3 or 4 toxicities, involving syncope, pneumonia, hypertension, atrial fibrillation, neutropenia and thrombocytopenia.
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