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Practical Management of the Venetoclax-Treated Patient in Chronic Lymphocytic Leukemia and Acute Myeloid Leukemia.

ABSTRACT: Venetoclax is a potent oral, highly selective small-molecule inhibitor of the antiapoptotic B-cell lymphoma 2 protein approved for chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma in treatment-naive patients (in combination with obinutuzumab) or for patients with relapsed/refractory CLL (in combination with rituximab). Venetoclax, in combination with azacitidine, decitabine, or low-dose cytarabine, is also approved in the United States for the treatment of newly diagnosed acute myeloid leukemia (AML) in adults who are ≥ 75 years or have comorbidities that preclude use of intensive induction chemotherapy. Clinical studies of patients with CLL or AML report both hematologic (e.g., neutropenia) and nonhematologic (e.g., gastrointestinal disorders and tumor lysis syndrome) adverse events associated with administration of venetoclax. It is therefore essential to provide information on the appropriate management of venetoclax-associated side effects. This article discusses the efficacy and safety of venetoclax administration and presents strategies specifically for the management of neutropenia and certain nonhematologic adverse events in patients receiving venetoclax for the treatment of AML and CLL.

SUBMITTER: Waggoner M

PROVIDER: S-EPMC9214960 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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Practical Management of the Venetoclax-Treated Patient in Chronic Lymphocytic Leukemia and Acute Myeloid Leukemia.

Waggoner Matthew M Katsetos John J Thomas Emilee E Galinsky Ilene I Fox Heather H

Journal of the advanced practitioner in oncology 20220501 4

Venetoclax is a potent oral, highly selective small-molecule inhibitor of the antiapoptotic B-cell lymphoma 2 protein approved for chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma in treatment-naive patients (in combination with obinutuzumab) or for patients with relapsed/refractory CLL (in combination with rituximab). Venetoclax, in combination with azacitidine, decitabine, or low-dose cytarabine, is also approved in the United States for the treatment of newly diagnosed acute m ...[more]

PMID: 35755897

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Project description:BackgroundNew treatments have improved outcomes for patients with relapsed chronic lymphocytic leukemia (CLL), but complete remissions remain uncommon. Venetoclax has a distinct mechanism of action; it targets BCL2, a protein central to the survival of CLL cells.MethodsWe conducted a phase 1 dose-escalation study of daily oral venetoclax in patients with relapsed or refractory CLL or small lymphocytic lymphoma (SLL) to assess safety, pharmacokinetic profile, and efficacy. In the dose-escalation phase, 56 patients received active treatment in one of eight dose groups that ranged from 150 to 1200 mg per day. In an expansion cohort, 60 additional patients were treated with a weekly stepwise ramp-up in doses as high as 400 mg per day.ResultsThe majority of the study patients had received multiple previous treatments, and 89% had poor prognostic clinical or genetic features. Venetoclax was active at all dose levels. Clinical tumor lysis syndrome occurred in 3 of 56 patients in the dose-escalation cohort, with one death. After adjustments to the dose-escalation schedule, clinical tumor lysis syndrome did not occur in any of the 60 patients in the expansion cohort. Other toxic effects included mild diarrhea (in 52% of the patients), upper respiratory tract infection (in 48%), nausea (in 47%), and grade 3 or 4 neutropenia (in 41%). A maximum tolerated dose was not identified. Among the 116 patients who received venetoclax, 92 (79%) had a response. Response rates ranged from 71 to 79% among patients in subgroups with an adverse prognosis, including those with resistance to fludarabine, those with chromosome 17p deletions (deletion 17p CLL), and those with unmutated IGHV. Complete remissions occurred in 20% of the patients, including 5% who had no minimal residual disease on flow cytometry. The 15-month progression-free survival estimate for the 400-mg dose groups was 69%.ConclusionsSelective targeting of BCL2 with venetoclax had a manageable safety profile and induced substantial responses in patients with relapsed CLL or SLL, including those with poor prognostic features. (Funded by AbbVie and Genentech; ClinicalTrials.gov number, NCT01328626.).

Dataset Information

Practical Management of the Venetoclax-Treated Patient in Chronic Lymphocytic Leukemia and Acute Myeloid Leukemia.

Publications

Practical Management of the Venetoclax-Treated Patient in Chronic Lymphocytic Leukemia and Acute Myeloid Leukemia.

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