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Clinical Trial Summary

This phase Ib trial tests the safety, side effects, and best dose of a enasidenib in combination with cobimetinib in treating patients with acute myeloid leukemia that has come back (relapsed) or does not respond to treatment (refractory). Enasidenib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Cobimetinib is used in patients whose cancer has a mutated (changed) form of a gene called BRAF. It is in a class of medications called kinase inhibitors. It works by blocking the action of an abnormal protein that signals cancer cells to multiply. This helps slow or stop the spread of cancer cells. Giving enasidenib and cobimetinib may kill more cancer cells in patients with relapsed or refractory acute myeloid leukemia.


Clinical Trial Description

PRIMARY OBJECTIVES: I. Assess the safety and tolerability of cobimetinib in combination with enasidenib. II. Determine the maximum tolerated dose(s) (MTD) and recommended phase 2 dose (RP2D). SECONDARY OBJECTIVES: I. Obtain preliminary estimates of clinical activity as measured by the complete remission (complete response [CR], complete response with incomplete hematologic recovery [CRi], or complete response with partial hematologic recovery [CRh]) rate and minimal residual disease (MRD) rate. II. Obtain preliminary estimates of clinical activity as measured by overall response rate (CR, CRi, CRh, morphologic leukemia free state [MLFS], and partial response [PR]). III. Obtain preliminary estimates of median time to complete remission. IV. Obtain preliminary estimates of median time to first response. V. Obtain preliminary estimates of response duration in all participants and in those attaining CR/CRi/CRh. VI. Obtain preliminary estimates of median and 1-year event-free survival (EFS). VII. Obtain preliminary estimates of median and 1-year overall survival (OS). EXPLORATORY OBJECTIVES: I. Characterize the effects of the combination on cellular differentiation of leukemic cells as measured by flow cytometry performed at study entry and at serial timepoints throughout the study. II. Evaluate changes in promotor methylation patterns after treatment with combination therapy. III. Evaluate changes in gene expression of RAS pathway regulators as a result of the combination therapy. OUTLINE: This is dose-escalation study of cobimetinib followed by a dose-expansion study. Patients receive cobimetinib orally (PO) once daily (QD) on days 1-21 and enasidenib mesylate PO QD on days 1-28 of each cycle. Treatment repeats every 28 days for 12 cycles in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days, and every 3 months for 1 year at last treatment dose. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05441514
Study type Interventional
Source City of Hope Medical Center
Contact
Status Recruiting
Phase Phase 1
Start date November 3, 2022
Completion date May 2, 2025

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