Omacetaxine + Azacitidine in Untreated Patients With High Grade MDS

NCT ID: NCT03564873

Last Updated: 2025-12-11

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: PHASE1/PHASE2
• Total Enrollment: 28 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2018-09-17
• Study Completion Date: 2027-06-30

Brief Summary

This study will treat patients with previously untreated high grade myleodysplastic syndromes (MDS) with both omacetaxine mepesuccinate and azacitidine.

Detailed Description

This is an open-label, phase I/II study for previously untreated patients with high grade MDS using omacetaxine and azacitidine with a small expansion cohort for relapsed and refractory MDS patients. Phase I features dose escalation, where patients will be assigned to one of three cohorts to receive different doses of omacetaxine with the standard dose and schedule of azacitidine, over a 28 day cycle. Phase II features the maximum tolerated dose from the Phase 1 study. An additional expansion cohort of 10 MDS patients who have failed to respond to or responded and relapsed after at least one line of therapy containing a hypomethylating agent therapy will also be accrued.

Conditions

High Grade Myelodysplastic Syndromes

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: SEQUENTIAL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Phase I

Up to 18 patients will be enrolled to one of three cohorts to receive various doses of omacetaxine over a 28 day cycle. Azacitidine will be given at the standard dose over a 28 day cycle.

Group Type: EXPERIMENTAL

Omacetaxine

Intervention Type: DRUG

Phase I is a dose escalation phase. Patients will be enrolled into one of three cohorts to receive omacetaxine subcutaneously (0.5, 0.75, 1.0, or 1.25 mg/m2) twice daily on days 1 to 7.

Azacitidine

Intervention Type: DRUG

Azacitidine will be given at the standard dose and schedule, 75 mg/m2 once daily, on days 1 to 7. The patients will then be monitored for 21 more days ( to complete one 28 day cycle) but no more medication will be administered during those 21 days.

Phase II

Up to 33 patients will be enrolled to receive the maximum tolerated dose (determined in phase I) over a 28 day cycle. Azacitidine will be given at the standard dose over a 28 day cycle.

Group Type: EXPERIMENTAL

Omacetaxine

Intervention Type: DRUG

Phase II is a maximum tolerated dose phase. Phase I will determine the maximum tolerated dose (highest amount that can be safely administered). Patients will receive omacetaxine subcutaneously at the maximum tolerated dose (0.5, 0.75, 1.0, or 1.25 mg/m2) twice daily on days 1 to 7.

Azacitidine

Intervention Type: DRUG

Azacitidine will be given at the standard dose and schedule, 75 mg/m2 once daily, on days 1 to 7. The patients will then be monitored for 21 more days ( to complete one 28 day cycle) but no more medication will be administered during those 21 days.

Interventions

Omacetaxine

Phase I is a dose escalation phase. Patients will be enrolled into one of three cohorts to receive omacetaxine subcutaneously (0.5, 0.75, 1.0, or 1.25 mg/m2) twice daily on days 1 to 7.

Intervention Type: DRUG

Azacitidine

Azacitidine will be given at the standard dose and schedule, 75 mg/m2 once daily, on days 1 to 7. The patients will then be monitored for 21 more days ( to complete one 28 day cycle) but no more medication will be administered during those 21 days.

Intervention Type: DRUG

Omacetaxine

Phase II is a maximum tolerated dose phase. Phase I will determine the maximum tolerated dose (highest amount that can be safely administered). Patients will receive omacetaxine subcutaneously at the maximum tolerated dose (0.5, 0.75, 1.0, or 1.25 mg/m2) twice daily on days 1 to 7.

Intervention Type: DRUG

Azacitidine

Azacitidine will be given at the standard dose and schedule, 75 mg/m2 once daily, on days 1 to 7. The patients will then be monitored for 21 more days ( to complete one 28 day cycle) but no more medication will be administered during those 21 days.

Intervention Type: DRUG

Other Intervention Names

Phase 1; Phase 1; Phase 2; Phase 2

Eligibility Criteria

Inclusion Criteria

A subject will be eligible for study participation if he/she meets the following criteria within 14 days prior to the first day of therapy (bone marrow biopsy can be performed 28 days prior to the first day of therapy).

1. Subject must have confirmation of high grade MDS (MDS with excess blasts by WHO criteria) or chronic myelomonocytic leukemia with greater than 5% bone marrow blasts

2. Subjects in the newly-diagnosed Phase 2 cohort must have received no prior treatment with a hypomethylating agent for MDS. Subjects in the relapsed/refractory Phase 2 cohort must have received at least 1 prior line of an HMA-containing regimen. "Refractory" is defined as having received at least four cycles of any HMA or HMA-containing regimen with >5-19% bone marrow blasts. "Relapsed" is defined as having >5-19% bone marrow blasts after having achieved a morphologic remission (≤5% bone marrow blasts) after at least one cycle of any HMA or HMA-containing regimen.

3. Subject must be ≥ 18 years of age

4. Subject must have a projected life expectancy of at least 12 weeks

5. Subject must have an Eastern Cooperative Oncology Group (ECOG) Performance status of ≤2

6. Subject must have adequate renal function as demonstrated by a calculated creatinine clearance ≥ 30 mL/min; determined via urine collection for 24-hour creatinine clearance or by the Cockcroft Gault formula

7. Subject must have adequate liver function as demonstrated by:

• aspartate aminotransferase (AST) ≤ 3.0 × ULN
• alanine aminotransferase (ALT) ≤ 3.0 × ULN
• direct bilirubin ≤ 3.0 × ULN

8. Non-sterile male subjects must use contraceptive methods with partner(s) from time of enrollment and continuing up to 90 das after the last dose of study drug. Male subjects must agree to refrain from sperm donation from initial study drug administration until 90 days after the last dose of study drug.

9. Female subjects must agree to use two reliable forms of contraception simultaneously or to practice complete abstinence from heterosexual intercourse during the following time periods related to this study: 1) for at least 28 days before starting omacetaxine; 2) throughout the entire duration of omacetaxine treatment; 3) during dose interruptions; and 4) for at least 90 days after omacetaxine discontinuation.

10. Subject must voluntarily sign and date an informed consent, approved by an Institutional Review Board (IRB), prior to the initiation of any screening or study-specific procedures.

Exclusion Criteria

A subject will not be eligible for study participation if he/she meets any of the following criteria:

1. Subject is known to be positive for HIV. HIV testing is not required.

2. Subject is known to be positive for hepatitis B or C infection with the exception of those with an undetectable viral load. Hepatitis B or C testing is not required and subjects with serologic evidence of prior vaccination to HBV (i.e., HBs Ag, anti-HBs+ and anti-HBc-) may participate.

3. Subject has any history of clinically significant condition(s) that in the opinion of the investigator would adversely affect his/her participating in this study including, but not limited to:

• New York Heart Association heart failure > class 2
• Renal, neurologic, psychiatric, endocrine, metabolic, immunologic, hepatic, cardiovascular disease, or bleeding disorder independent of leukemia

4. Subject exhibits evidence of uncontrolled systemic infection requiring therapy (viral, bacterial or fungal). Patients on antibiotics with controlled systemic symptoms will not be excluded.

5. Subject has uncontrolled diabetes

6. Subject has had a recent major hemorrhage or has a bleeding diathesis associated with a high risk of bleeding

7. Pregnant and breastfeeding females.

8. Subject has a history of other malignancies prior to study entry, except for:

• Adequately treated in situ carcinoma of the breast or cervix uteri
• Basal cell carcinoma of the skin or localized squamous cell carcinoma of the skin
• Prostate cancer with no plans for therapy of any kind
• Previous malignancy confined and surgically resected (or treated with other modalities) with curative intent.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

University of Colorado, Denver

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Daniel Pollyea, MD

Role: PRINCIPAL_INVESTIGATOR

University of Colorado, Denver

Locations

Universtiy of Colorado Denver

Aurora, Colorado, United States

Countries

United States

References

Pollyea DA, Stevens BM, Abbott D, Amaya M, Gutman JA, Kent A, McMahon C, Schwartz M, Smith C, Dell-Martin J, Sohalski C, Ellis A, Haag M, Schowinsky J, Pan Z, Patel SB, Ransom M, Gillen A, Jordan CT, Pietras EM. Omacetaxine and azacitidine for untreated patients with myelodysplastic syndromes and excess blasts: a phase I/II clinical trial. EClinicalMedicine. 2025 Oct 10;89:103546. doi: 10.1016/j.eclinm.2025.103546. eCollection 2025 Nov.

Reference Type: DERIVED

PMID: 41140451 (View on PubMed)

Provided Documents

Document Type: Study Protocol, Statistical Analysis Plan, and Informed Consent Form

View Document

Other Identifiers

17-2215.cc

Identifier Type: -

Identifier Source: org_study_id