A Phase 1 interventional study of Gemtuzumab Ozogamicin and Liposome-encapsulated Daunorubicin-Cytarabine in Acute Myeloid Leukemia Arising From Previous Myelodysplastic Syndrome, Recurrent Acute Myeloid Leukemia and Refractory Acute Myeloid Leukemia, sponsored by M.D. Anderson Cancer Center. Completed at 1 site in United States. Open to participants aged Up to 21 Years. Per ClinicalTrials.gov, last updated 2026-05-20.
Sponsored by M.D. Anderson Cancer Center · Phase 1, Interventional, and Treatment
This phase I trial studies the best dose and side effects of liposomal cytarabine, daunorubicin, and gemtuzumab ozogamicin in treating pediatric patients with acute myeloid leukemia that has returned after treatment (relapsed) or does not respond to treatment (refractory). Chemotherapy drugs, such as liposomal cytarabine and daunorubicin, 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. Gemtuzumab ozogamicin is a monoclonal antibody, called gemtuzumab, linked to a toxic agent called ozogamicin. Gemtuzumab attaches to CD33 positive cancer cells in a targeted way and delivers ozogamicin to kill them. Giving liposomal cytarabine and daunorubicin and gemtuzumab ozogamicin may help to control the disease.
PRIMARY OBJECTIVE:
I. To determine the maximum tolerated dose (MTD) and safety of liposomal cytarabine and daunorubicin (CPX-351) in combination with gemtuzumab ozogamicin (GO) in relapsed refractory pediatric patients with acute myeloid leukemia (AML).
SECONDARY OBJECTIVE:
I. To determine the preliminary assessment of efficacy by overall response (OR), including complete remission (CR), CR with incomplete blood count recovery and partial remission), overall survival (OS), event-free survival (EFS) and duration of response (DOR) of pediatric patients treated with this combination.
EXPLORATORY OBJECTIVES:
I. To determine the minimal residual disease (MRD) after treatment with this combination and its impact in long-term outcome (OS and EFS).
II. To determine the effect of the level of pre-treatment expression of CD33 with response to this combination.
III. To determine the effect of this treatment combination on responding pediatric patients transitioning to hematopoietic stem cell transplant (HSCT) i.e., number and percentage of patients that are able to transition to HSCT.
OUTLINE:
INDUCTION 1 (28 days): Patients receive CPX-351 intravenously (IV) over 90 minutes on days 1, 3, and 5 and GO IV over 2 hours on day 1 in the absence of disease progression or unacceptable toxicity.
INDUCTION 2: Patients who do not attain a defined clinical response after cycle Induction 1 receive CPX-351 IV on days 1 and 3 and GO IV over 2 hours on day 1 in the absence of disease progression or unacceptable toxicity.
CONSOLIDATION: Beginning 4 weeks after last induction, patients receive CPX-351 IV over 90 minutes on days 1 and 3 and GO IV over 2 hours on day 1 in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up at 28 days.
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This study's enrollment of 1 is below the median of 41 across 2,509 interventional studies indexed under Leukemia, Myeloid, Acute.
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Pediatric patients with diagnosis of CD33 positive (> 3%),
Females of childbearing potential must have a negative serum or urine beta human chorionic gonadotropin (beta-HCG) pregnancy test result within 14 days prior to the first dose of study drugs and must agree to use one of the following effective contraception methods during the study and for 30 days following the last dose of study drug. Effective methods of birth control include:
Exclusion Criteria:
Prior chemotherapy/radiotherapy/investigational therapy within 2 weeks before the start of study drugs with the following exception:
INDUCTION 1 (28 days): Patients receive CPX-351 IV over 90 minutes on days 1, 3, and 5 and GO IV over 2 hours on day 1 in the absence of disease progression or unacceptable toxicity. INDUCTION 2: Patients who do not attain a defined clinical response after cycle Induction 1 receive CPX-351 IV on days 1 and 3 and GO IV over 2 hours on day 1 in the absence of disease progression or unacceptable toxicity. CONSOLIDATION: Beginning 4 weeks after last induction, patients receive CPX-351 IV over 90 minutes on days 1 and 3 and GO IV over 2 hours on day 1 in the absence of disease progression or unacceptable toxicity.
Drug: Gemtuzumab Ozogamicin · Drug: Liposome-encapsulated Daunorubicin-Cytarabine
Given IV
Also known as: Calicheamicin-Conjugated Humanized Anti-CD33 Monoclonal Antibody, CDP-771, CMA-676, gemtuzumab, hP67.6-Calicheamicin, Mylotarg, WAY-CMA-676
Given IV
Also known as: CPX-351, Cytarabine-Daunorubicin Liposome for Injection, Daunorubicin and Cytarabine (Liposomal), Liposomal AraC-Daunorubicin CPX-351, Liposomal Cytarabine-Daunorubicin, Liposome-encapsulated Combination of Daunorubicin and Cytarabine, Vyxeos
Maximum tolerated dose
Will employ the Bayesian optimal interval (BOIN) design.
Time frame: Up to 28 days
Incidence of adverse events
The overall incidence and severity of all adverse events using Common Toxicity Criteria version 4.0.
Time frame: Up to 28 days
Objective response
Will be summarized using descriptive statistics overall and per dose levels.
Time frame: Up to 28 days
Duration of response
Will be summarized using descriptive statistics overall and per dose levels.
Time frame: Number of days from the date of initial response (partial response or better) to the date of first documented disease progression/relapse or death, whichever occurs first, assessed p to 28 days
Overall survival
Will be estimated using Kaplan-Meier method.
Time frame: Number of days from study enrollment to death due to any cause, assessed up to 28 days
Event free survival
Will be estimated using Kaplan-Meier method.
Time frame: Number of days from the date of treatment initiation to the date of documented treatment failure, relapses from complete response, or death from any cause, whichever occurs first, assessed up to 28 days
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M.D. Anderson Cancer Center