Acute Myeloid Leukemia Clinical Trial

Gemtuzumab Ozogamicin With G-CSF, Cladribine, Cytarabine & Mitoxantrone for Untreated AML & High-Grade Myeloid Neoplasm

Summary

This phase I/II trial studies the side effects and best dosing frequency of gemtuzumab ozogamicin when given in combination with granulocyte colony stimulating factor (G-CSF), cladribine, cytarabine and mitoxantrone (GCLAM) and to see how well they work in treating participants with acute myeloid leukemia or high-grade myeloid tumors (neoplasms) that have not been previously treated. Antibody-drug conjugates, such as gemtuzumab ozogamicin, act by directly delivering toxic chemotherapy to cancer cells. Granulocyte colony stimulating factor is a growth factor used to stimulate leukemia cells and render them more sensitive to chemotherapy drugs. Drugs used in chemotherapy, such as cladribine, cytarabine and mitoxantrone, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving gemtuzumab ozogamicin in combination with G-CSF, cladribine, cytarabine and mitoxantrone hydrochloride may work better in treating participants with acute myeloid leukemia or high-grade myeloid neoplasm.

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Full Description

PRIMARY OBJECTIVES:

I. To determine the maximum-tolerated dose (MTD) of gemtuzumab ozogamicin (GO) when added to GCLAM in patients with newly-diagnosed AML requiring induction chemotherapy. (Phase I) II. To evaluate the 6-month and 1-year event-free survival (EFS) rate with GO + GCLAM treated at the MTD. (Phase II)

SECONDARY OBJECTIVES:

I. Describe, within the limits of a phase 1/2 study, the toxicity profile of the study regimen.

II. Compare, within the limits of a phase 1/2 study, measurable residual disease (MRD) rates with GO + GCLAM at the MTD to patients treated previously with GCLAM alone.

III. Estimate, within the limits of a phase 1/2 study, the relationship between MRD status after induction therapy and relapse risk/time to relapse as well as relapse-free and overall survival.

IV. Compare, within the limits of a phase 1/2 study, complete remission rates with GO + GCLAM at the MTD to patients treated previously with GCLAM alone.

V. Compare, within the limits of a phase 1/2 study, overall survival rates with GO + GCLAM at the MTD to patients treated previously with GCLAM alone VI. Evaluate, within the limits of a phase 1/2 study, the impact of GO dosing regimens on the duration of cytopenias.

VII. Collect biological specimens for use for the future laboratory investigation of biomarkers for response to GO.

OUTLINE: This is a phase I dose escalation study of gemtuzumab ozogamicin followed by a phase II study.

INDUCTION THERAPY: Participants receive gemtuzumab ozogamicin intravenously (IV) either as a single dose on day 1, or as three doses on days 1, 4, and 7. Participants also receive G-CSF subcutaneously (SC) on days 0-5, cladribine IV over 2 hours on days 1-5, cytarabine IV over 2 hours on days 1-5, and mitoxantrone hydrochloride IV on days 1-3. Patients who do not achieve a CR or CRi following the first cycle of induction are eligible for a second cycle, which is given without gemtuzumab ozogamicin. Participants with a complete remission (CR) or complete remission with incomplete count recovery (CRi) may then proceed to Post-Remission Therapy.

POST-REMISSION THERAPY: Participants receive G-CSF, cladribine, and cytarabine as in Induction Therapy during cycle 1, and cytarabine IV every 12 hours on days 1-6 of cycles 2-3. Treatment repeats every month for up to 3 cycles in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, participants are followed up every 3 months for 5 years.

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Eligibility Criteria

Inclusion Criteria:

Diagnosis of untreated "high-grade" myeloid neoplasm (≥ 10% blasts in blood or bone marrow) or acute myeloid leukemia (AML) other than acute promyelocytic leukemia (APL) with t(15;17)(q22;q12) or variants according to the 2016 World Health Organization (WHO) classification; outside diagnostic material is acceptable to establish diagnosis; submission of peripheral blood specimen for flow cytometry performed at the study institution should be considered; diagnostic material must have been submitted for cytogenetic and/or molecular testing as clinically appropriate
Medically fit, as defined by treatment-related mortality (TRM) score ≤13.1 calculated with simplified model
The use of hydroxyurea prior to study registration is allowed; patients with symptoms/signs of hyperleukocytosis or white blood cells (WBC) > 100,000/uL can be treated with leukapheresis or may receive up to 2 doses of cytarabine (up to 500 mg/m^2/dose) prior to enrollment
Patients may have received low-intensity treatment (e.g. azacitidine/decitabine, lenalidomide, growth factors) for antecedent low-grade myeloid neoplasm (i.e. < 10% blasts in blood and bone marrow)
Bilirubin ≤ 2.5 x institutional upper limit of normal (IULN) unless elevation is thought to be due to hepatic infiltration by AML, Gilbert's syndrome, or hemolysis (assessed within 14 days prior to study day 0)
Serum creatinine ≤ 2.0 mg/dL (assessed within 14 days prior to study day 0)
Left ventricular ejection fraction ≥ 45%, assessed within 12 months prior to study day 0, e.g. by multigated acquisition (MUGA) scan or echocardiography, or other appropriate diagnostic modality and no clinical evidence of congestive heart failure
Women of childbearing potential and men must agree to use adequate contraception
Provide written informed consent

Exclusion Criteria:

Myeloid blast crisis of chronic myeloid leukemia (CML), unless patient is not considered candidate for tyrosine kinase inhibitor treatment
Concomitant illness associated with a likely survival of < 1 year
Active systemic fungal, bacterial, viral, or other infection, unless disease is under treatment with anti-microbials, and/or controlled or stable (e.g. if specific, effective therapy is not available/feasible or desired [e.g. known chronic viral hepatitis, human immunodeficiency virus (HIV)]); patient needs to be clinically stable as defined as being afebrile and hemodynamically stable for 24 hours; patients with fever thought to be likely secondary to leukemia are eligible
Known hypersensitivity to any study drug
Confirmed or suspected pregnancy or active breast feeding
Treatment with any other investigational anti-leukemia agent; in phase 2, treatment with a tyrosine kinase inhibitor for patients with FLT3-mutated AML is permissible

Study is for people with:

Acute Myeloid Leukemia

Phase:

Phase 1

Estimated Enrollment:

66

Study ID:

NCT03531918

Recruitment Status:

Active, not recruiting

Sponsor:

Fred Hutchinson Cancer Center

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There is 1 Location for this study

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Fred Hutch/University of Washington Cancer Consortium
Seattle Washington, 98109, United States

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Study is for people with:

Acute Myeloid Leukemia

Phase:

Phase 1

Estimated Enrollment:

66

Study ID:

NCT03531918

Recruitment Status:

Active, not recruiting

Sponsor:


Fred Hutchinson Cancer Center

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