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First in Human Study of Ziftomenib in Relapsed or Refractory Acute Myeloid Leukemia

A Phase 1/2 First in Human Study of the Menin-MLL(KMT2A) Inhibitor KO-539 in Patients With Relapsed or Refractory Acute Myeloid Leukemia

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04067336
Enrollment
263
Registered
2019-08-26
Start date
2019-09-12
Completion date
2028-10-16
Last updated
2025-11-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Malignant Neoplasm, Acute Myeloid Leukemia, Mixed Lineage Leukemia, Mixed Lineage Acute Leukemia, Acute Leukemia of Ambiguous Lineage, Mixed Phenotype Acute Leukemia, Acute Lymphoblastic Leukemia

Keywords

AML, Hematological malignancy, KMT2A, NPM1, Menin, Leukemia, Acute Leukemia, ALL, MLL, Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, MEIS1

Brief summary

In this trial, ziftomenib, a menin-MLL(KMT2A) inhibitor, will be tested in patients for the first time. The trial includes a Main Study and four sub-studies. In the Main Study (including Phase 1a, Phase 1b, and Phase 2 portions), ziftomenib will be evaluated in patients with relapsed or refractory (R/R) acute myeloid leukemia (AML). The main study has completed enrollment. In Sub-studies 1 and 2, the effects of taking ziftomenib and other common drugs at the same time will be investigated in AML patients. In Sub-study 3, ziftomenib will be evaluated in patients with R/R acute lymphoblastic leukemia (ALL). In Sub-study 4, ziftomenib will be evaluated in patients with R/R AML with certain genetic mutations.

Detailed description

This first-in-human (FIH), open-label study will assess ziftomenib, a menin-MLL(KMT2A) inhibitor, in patients with relapsed or refractory (R/R) acute myeloid leukemia (AML). The trial includes a Main Study and four sub-studies. The Main Study is a Phase 1/2 dose-escalation and dose-validation/expansion study to assess ziftomenib in patients with R/R AML. The dose-escalation part of the study (Phase 1a) will determine the maximum tolerated dose (MTD) and/or the recommended Phase 2 dose (RP2D). The dose-validation/expansion part of the study (Phase 1b) will determine the safety, tolerability, and minimal biologically effective dose (MBED) of ziftomenib in biomarker-specific dosing cohorts from among doses that demonstrated early biological activity and are determined to be safe in the dose-escalation phase. The Phase 2 portion of the study will determine the safety, tolerability, and anti-leukemia activity of ziftomenib in patients with nucleophosmin 1-mutant (NPM1-m) AML. In Sub-study 1, the effects of co-administration of ziftomenib on the pharmacokinetics (PK) of midazolam will be studied in patients with R/R AML with certain genetic mutations. In Sub-study 2, the effects of co-administration of itraconazole on the PK of ziftomenib will be studied in patients with R/R AML with certain genetic mutations. In Sub-study 3, the safety, tolerability, and MBED/RP2D of ziftomenib will be studied in patients with R/R KMT2A-rearranged (KMT2A-r) ALL (Phase 1a dose escalation). These parameters will be investigated further for the RP2D in a Phase 1b dose-validation/cohort expansion part of the sub-study. In Sub-study 4, the clinical activity of ziftomenib will be studied in patients with R/R AML with certain genetic mutations.

Interventions

Oral administration

DRUGMidazolam

Oral administration

DRUGItraconazole

Oral administration

Sponsors

Kura Oncology, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: Patients with refractory or relapsed AML defined as the reappearance of ≥ 5% blasts in the bone marrow and who have also failed or are ineligible for any approved standard of care therapies, including HSCT. 1. Phase 1b: * Patients with a documented lysine\[K\]-specific methyltransferase 2-rearrangement (KMT2A-r), or * Patients with a documented nucleophosmin 1 mutation (NPM1-m) 2. Phase 2: * Patients with a documented nucleophosmin 1 mutation (NPM1-m) 3. Sub-studies: * Sub-studies 1 and 2: Patients with R/R AML with NPM1-m or other mutations associated with MEIS1 overexpression. * Sub-study 3: Patients with R/R Acute Lymphoblastic Leukemia (ALL) with KMT2A-r. * Sub-study 4: Patients with R/R AML with mutations associated with MEIS1 overexpression. 4. ≥ 18 years of age. 5. Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2, and a life expectancy of at least 2 months. 6. Adequate liver and kidney function according to protocol requirements. 7. Peripheral white blood cell (WBC) counts ≤ 30,000/μL. Patients may receive hydroxyurea to control and maintain white blood cell count prior to enrollment. 8. Women of childbearing potential must be willing to use a highly effective method of contraception throughout the study and for at least 187 days after the last dose of study treatment. 9. Males with female partners of childbearing potential must agree to use a highly effective method of contraception throughout the study and for at least 97 days after the last dose of study treatment. Key

Exclusion criteria

1. Diagnosis of acute promyelocytic leukemia. 2. Diagnosis of chronic myelogenous leukemia in blast crisis. 3. Donor lymphocyte infusion \< 30 days prior to study entry. 4. Clinically active central nervous system (CNS) leukemia. 5. Undergone HSCT and have not had adequate hematologic recovery. 6. Receiving immunosuppressive therapy post HSCT within 2 weeks of Cycle 1 Day 1. 7. Grade ≥ 2 active graft-versus-host disease (GVHD), moderate or severe limited chronic GVHD, or extensive chronic GVHD of any severity. 8. Received chemotherapy immunotherapy, radiotherapy, or any ancillary therapy that is considered to be investigational (i.e., used for non-approved indications(s) and in the context of a research investigation) \< 14 days prior to the first dose of ziftomenib or within 5 drug half-lives prior to the first dose of study drug. 9. Not recovered to \< Grade 2 (National Cancer Institute Common Terminology Criteria for Adverse Events v5.0) from all acute toxicities or deemed back to a stable baseline. 10. Treatment with concomitant drugs that are strong inhibitors or inducers of cytochrome P450-isozyme 3A4 (CYP3A4), as follows: * Phase 1a, 1b, 2, and sub-studies 3 and 4: with the exception of antibiotics, antifungals, and antivirals that are used as standard of care or to prevent or treat infections and other such drugs that are considered absolutely essential for the care of the patient. * Sub-studies 1 and 2: No exceptions will be allowed except for the use of moderate CYP3A4 antifungal prophylaxis such as fluconazole or isavuconazole which is at steady state on Cycle 1 Day 1 and will continue through the completion of PKs on Cycle 1 Day 15 (for sub-study 1) or Cycle 1 Day 18 (for sub-study 2). 11. Detectable viral load for human immunodeficiency virus, hepatitis C, or hepatitis B surface antigen indicative of active infection. Patients with controlled disease will not be excluded from study enrollment. 12. Pre-existing disorder predisposing the patient to a serious or life-threatening infection (e.g. cystic fibrosis, congenital or acquired immunodeficiency, bleeding disorder, or cytopenias not related to AML). 13. Active uncontrolled acute or chronic systemic fungal, bacterial, viral, or other infection. 14. Significant cardiovascular disease including unstable angina pectoris, uncontrolled hypertension or arrhythmia, history of cerebrovascular accident including transient ischemic attack within the past 6 months, congestive heart failure (NYHA Class III or IV) related to primary cardiac disease, ischemic or severe valvular heart disease, or a myocardial infarction within 6 months prior to the first dose of study treatment. 15. Mean QTcF \>480 ms on triplicate ECG. 16. Major surgery within 4 weeks prior to the first dose of study treatment. 17. Women who are pregnant or lactating. All female patients with reproductive potential must have a negative serum pregnancy test within 72 hours prior to starting treatment. 18. For sub-studies 1 and 2: Any intake of grapefruit, grapefruit juice, Seville oranges, Seville orange marmalade, or other products containing grapefruit or Seville oranges within 7 days of the first administration of ziftomenib until the end of Cycle 1. 19. For sub-studies 1 and 2: Moderate (Child-Pugh class B) or severe (Child-Pugh class C) hepatic impairment.

Design outcomes

Primary

MeasureTime frameDescription
Phase 1a: Maximum tolerated dose (MTD) and/or the recommended Phase 2 dose (RP2D)Dose Limiting Toxicities (DLTs) will be evaluated during the first 28 days (1 cycle)MTD is defined as the highest dose that is not expected to cause dose limiting toxicity (DLT) in more than 20% of patients.
Phase 1b: Number of patients who experience Adverse Events (AEs) and Serious Adverse Events (SAEs)During treatment and up to approximately 28 days after treatment discontinuation, or until immediately before the initiation of another anticancer therapy, whichever occurs first.Assessed by NCI-CTCAE v5.0
Phase 1b: Minimum biologically effective doseFor at least 12 months following end of treatmentMinimum biologically effective dose in dosing cohorts which have demonstrated biological activity and have been determined to be safe as a part of Part 1a
Phase 1a, 1b, and 2: Evidence of anti-leukemia activityFor at least 12 months following end of treatmentAssessed by the CR + CRh rate
Sub-study 1: Time to observed maximum plasma concentration (Tmax) of ziftomenib and midazolamCycle 1 on Days 1 and 15 at predose and postdoseTmax of ziftomenib, its metabolites, midazolam, and 1-hydroxymidazolam
Sub-study 1: Area under the plasma concentration-time curve from time 0 to time t (AUC0-t) of ziftomenib and midazolamCycle 1 on Days 1 and 15 at predose and postdoseAUC0-t of ziftomenib, its metabolites, midazolam, and 1-hydroxymidazolam
Sub-study 1: Maximum observed plasma concentration (Cmax) of ziftomenib and midazolamCycle 1 on Days 1 and 15 at predose and postdoseCmax of ziftomenib, its metabolites, midazolam, and 1-hydroxymidazolam
Sub-study 2: Time to observed maximum plasma concentration (Tmax) of ziftomenib and itraconazoleCycle 1 on Days 1, 15, and 22 at predose and postdoseTmax of ziftomenib, its metabolites, and itraconazole
Sub-study 2: Area under the plasma concentration-time curve from time 0 to time t (AUC0-t) of ziftomenib and itraconazoleCycle 1 on Days 1, 15, and 22 at predose and postdoseAUC0-t of ziftomenib, its metabolites, and itraconazole
Sub-study 2: Maximum observed plasma concentration (Cmax) of ziftomenib and itraconazoleCycle 1 on Days 1, 15, and 22 at predose and postdoseCmax of ziftomenib, its metabolites, and itraconazole
Sub-study 3: Minimum biologically effective dose (MBED) and/or the recommended Phase 2 dose (RP2D)During treatment and up to approximately 28 days after treatment discontinuation, or until immediately before the initiation of another anticancer therapy, whichever occurs firstAssessed by the number of patients that experience Adverse Events (AEs) and Serious Adverse Events (SAEs) per NCI-CTCAE v5.0
Sub-study 3: Change in Eastern Cooperative Oncology Group (ECOG) statusTimeframe: from Baseline to End of TreatmentTo assess the change in ECOG status
Sub-study 3: Time to observed maximum plasma concentration (Tmax) of ziftomenibPostdose on Cycle 1 Day 1 and Cycle 2 Day 1. Predose at Cycle 2 onwardsTmax of ziftomenib
Sub-study 3: Area under the plasma concentration-time curve from time 0 to time t (AUC0-t) of ziftomenibPostdose on Cycle 1 Day 1 and Cycle 2 Day 1. Predose at Cycle 2 onwardsAUC0-t of ziftomenib
Sub-study 3: Maximum observed plasma concentration (Cmax) of ziftomenibPostdose on Cycle 1 Day 1 and Cycle 2 Day 1. Predose at Cycle 2 onwards.Cmax of ziftomenib
Sub-study 4: Complete remission (CR) and complete remission with partial hematologic recovery (CRh)For at least 12 months following end of treatmentTo assess the CR+CRh rate

Secondary

MeasureTime frameDescription
Sub-study 3: Complete remission (CR) measurable residual disease (MRD) negativityFor at least 12 months following discontinuation of treatmentTo assess the CR MRD negativity
Sub-studies 3 and 4: Composite complete remission (CRc)For at least 12 months following discontinuation of treatmentTo assess CRc
Sub-study 3: Duration of response (DOR)For at least 12 months following discontinuation of treatmentTo assess the DOR, defined as the duration of CR
Sub-studies 3 and 4: Overall survival (OS)For at least 12 months following discontinuation of treatmentTo assess overall survival
Sub-studies 3 and 4: Event-free survival (EFS)For at least 12 months following discontinuation of treatmentTo assess event-free survival
Sub-study 4: Duration of response (DOR)For at least 12 months following discontinuation of treatmentTo assess the DOR, defined as the duration of CR/CRh
Sub-studies 3 and 4: Overall response rate (ORR) measurable residual disease (MRD) negativityFor at least 12 months following discontinuation of treatmentTo assess the ORR MRD negativity
Sub-study 4: Number of patients that experience Adverse Events (AEs) and Serious Adverse Events (SAEs)During treatment and up to approximately 28 days after treatment discontinuation, or until immediately before the initiation of another anticancer therapy, whichever occurs first.Assessed by NCI-CTCAE v5.0
Sub-study 4: Area under the plasma concentration-time curve from time 0 to time t (AUC0-t) of ziftomenibPostdose on Cycle 1 Day 1 and Cycle 2 Day 1. Predose on Cycle 2 onwardsAUC0-t of ziftomenib and its metabolites
Sub-study 4: Maximum plasma concentration (Cmax) of ziftomenibPostdose on Cycle 1 Day 1 and Cycle 2 Day 1. Predose on Cycle 2 onwardsCmax of ziftomenib and its metabolites
Sub-study 4: Transfusion independence (TI)For at least 12 months following discontinuation of treatmentTo assess transfusion independence
Sub-study 4: Time to observed maximum plasma concentration (Tmax) of ziftomenibPostdose on Cycle 1 Day 1 and Cycle 2 Day 1. Predose on Cycle 2 onwardsTmax of ziftomenib and its metabolites
Phase 1a and 2: Number of patients that experience Adverse Events (AEs) and Serious Adverse Events (SAEs)During treatment and up to approximately 28 days after treatment discontinuation, or until immediately before the initiation of another anticancer therapy, whichever occurs first.Assessed by NCI-CTCAE v5.0
Phase 1a: TmaxCycle 1 and Cycle 2. Each cycle is 28 days.Time to observed maximum plasma concentration of ziftomenib and/or its metabolites
Phase 1a: AUC(0-t)Cycle 1 and Cycle 2. Each cycle is 28 days.Area under the plasma concentration-time curve from time 0 to time t of ziftomenib and/or its metabolites
Phase 1a: CmaxCycle 1 and Cycle 2. Each cycle is 28 days.Maximum plasma concentration of ziftomenib and/or its metabolites
Phases 1a, 1b, and 2: Complete remission (CR) and complete remission with partial hematologic recovery (CRh) measurable residual disease (MRD) negativityFor at least 12 months following discontinuation of treatmentTo assess the CR/CRh MRD negativity
Phases 1a, 1b, and 2: Duration of response (DOR)For at least 12 months following discontinuation of treatmentTo assess the DOR, defined as the duration of CR/CRh
Phases 1a, 1b, and 2: Transfusion independence (TI)For at least 12 months following discontinuation of treatmentTo assess transfusion independence
Phases 1a, 1b, and 2: Overall response rate (ORR)For at least 12 months following discontinuation of treatmentTo assess the ORR
Phases 1a, 1b, and 2: Event-free survival (EFS)For at least 12 months following end of treatmentTo assess event-free survival
Phases 1a, 1b, and 2: Overall survival (OS)For at least 12 months following end of treatmentTo assess overall survival
Phases 1a, 1b, and 2: Composite complete remission (CRc)For at least 12 months following discontinuation of treatmentTo assess CRc
Phases 1b and 2: Composite complete remission (CRc) measurable residual disease (MRD) negativityFor at least 12 months following discontinuation of treatmentTo assess the CRc MRD negativity
Phases 1b and 2: Overall response rate (ORR) measurable residual disease (MRD) negativityFor at least 12 months following discontinuation of treatmentTo assess the ORR MRD negativity
Sub-study 2: Corrected QT (QTc) intervalsDuring Cycle 1Assessed by QTc intervals

Countries

Belgium, Canada, France, Germany, Italy, Poland, Spain, United Kingdom, United States

Contacts

Primary ContactKura Medical Information
medinfo@kuraoncology.com844-KURAONC (844-587-2662)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 17, 2026