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Drug Evaluation

Quizartinib for the treatment of acute myeloid leukemia

ORCID Icon &
Pages 2077-2090 | Received 24 Apr 2020, Accepted 22 Jul 2020, Published online: 09 Aug 2020
 

ABSTRACT

Introduction

. Up to 30% of patients with acute myeloid leukemia (AML) have a mutation in the FLT3 receptor. Molecular targets have acquired a significant interest in the treatment of AML and are changing patient outcomes, including improvement of overall survival (OS) and remission rates. FLT3 inhibitors have obtained a central role in how we treat AML.

Areas covered

. This article reviews the mechanism of action, pharmacology, clinical efficacy, and safety of quizartinib, a FLT3 inhibitor, for the treatment of acute myeloid leukemia.

Expert opinion

. Quizartinib yielded an improvement in OS and complete remission (CR) rates in a phase 3 trial for relapsed/refractory FLT3-mutated AML. The toxicities are manageable; however, it is associated with significant QTc prolongation and myelosuppression. The FDA and EMA did not grant drug approval to quizartinib in the relapsed/refractory setting due to the lack of a significant benefit – to-risk ratio, safety concerns and concerns with credibility and generalizability of the trial data. Results from the frontline phase 3 study evaluating quizartinib with intensive chemotherapy are eagerly awaited. Ongoing studies are investigating its toxicity and efficacy with other therapeutic agents and will help to clarify its role in the treatment of FLT3-ITD-mutated AML.

Declaration of interest

KWL Yee reports advisory board honorarium from Astellas. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

Reviewer disclosures

Peer reviewers on this manuscript have no relevant financial or other relationships to disclose.

Additional information

Funding

This manuscript has not been funded.

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