The treatment of FLT3- mutated relapsed or refractory (R/R) is challenging. Gilteritinib, as a single agent, is the first FLT3 inhibitor to be FDA approved in the R/R setting. This phase I clinical trial will evaluate DLT/MTD and the recommended phase II study dose of gilteritinib when combined with mitoxantrone, cladribine, cytarabine and filgrastim (CLAG-M) in patients with FLT3- mutated R/R AML. This study will also evaluate the pharmacodynamics and pharmacokinetics of gilteritinib when combined with CLAG-M at specific time points. Although this combination has not been established to have superior clinical benefit in comparison to single-agent gilteritinib, the objective of this trial is to provide a possible therapeutic benefit in addition to safety and tolerability.
The purpose of this study is to evaluate the dose-limiting toxicities (DLT) and define the maximum tolerated dose (MTD) and the recommended phase II study dose of gilteritinib when combined with mitoxantrone, cladribine, cytarabine and filgrastim (GM-CLAG) in participants with FLT3- mutated relapsed or refractory (R/R) acute myeloid leukemia (AML).