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Pevonedistat, Azacitidine, Fludarabine Phosphate, and Cytarabine in Treating Patients With Relapsed or Refractory Acute Myeloid Leukemia or Myelodysplastic Syndrome

A Feasibility Trial of MLN4924 (Pevonedistat, TAK 924) Given in Combination With Azacitidine, Fludarabine, and Cytarabine, in Children, Adolescents, and Young Adults With Relapsed or Refractory Acute Myeloid Leukemia or Myelodysplastic Syndrome

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03813147
Enrollment
12
Registered
2019-01-23
Start date
2019-05-17
Completion date
2023-12-31
Last updated
2025-04-13

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

Conditions

Acute Myeloid Leukemia Arising From Previous Myelodysplastic Syndrome, Recurrent Acute Myeloid Leukemia, Recurrent Myelodysplastic Syndrome, Refractory Acute Myeloid Leukemia, Refractory Myelodysplastic Syndrome

Brief summary

This phase I trial studies the side effects and how well pevonedistat, azacitidine, fludarabine phosphate, and cytarabine work in treating patients with acute myeloid leukemia or myelodysplastic syndrome that has come back (relapsed) or has not responded to treatment (refractory). Pevonedistat may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Chemotherapy drugs, such as azacitidine, fludarabine phosphate, and cytarabine, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving more than one drug (combination chemotherapy) and pevonedistat may work better in treating patients with acute myeloid leukemia or myelodysplastic syndrome.

Detailed description

PRIMARY OBJECTIVES: I. To evaluate the tolerability and feasibility of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine phosphate (fludarabine), and cytarabine re-induction for pediatric patients with recurrent/refractory acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). II. To define and describe the toxicities of MLN4924 (pevonedistat) when given in combination with azacitidine, fludarabine, and cytarabine to pediatric patients with relapsed/refractory AML and MDS. III. To characterize the pharmacokinetics of MLN4924 (pevonedistat) in children with recurrent or refractory AML and MDS. SECONDARY OBJECTIVE: I. To describe the antitumor activity of MLN4924 (pevonedistat) in combination with azacitidine, fludarabine, and cytarabine within the confines of a feasibility study. EXPLORATORY OBJECTIVES: I. To describe the effect of MLN4924 (pevonedistat) administered on this schedule on messenger ribonucleic acid (mRNA) transcript levels of genes known to be induced by MLN4924 (pevonedistat) mediated NEDD8 activating enzyme (NAE) inhibition. II. To describe the effect of MLN4924 (pevonedistat) on NEDDylation of proteins in the NEDD8 pathway that are likely to be affected by NAE inhibition with MLN4924 (pevonedistat). OUTLINE: Patients receive cytarabine intrathecally on day 0 at least 24 hours prior to the start of each cycle. Patients then receive azacitidine intravenously (IV) over 15 minutes once daily (QD) on days 1-5, pevonedistat IV over 60 minutes on days 1, 3, and 5, and fludarabine phosphate IV over 30 minutes QD and cytarabine IV over 1-3 hours QD on days 6-10. Patients with central nervous system (CNS)2 or CNS3 receive cytarabine intrathecally or methotrexate intrathecally, hydrocortisone intrathecally, and cytarabine intrathecally on days 8 and 11-34. Cycles continue for 35 days in the absence of disease progression or unacceptable toxicity. Patients with stable or greater with non-hematologic toxicities probably or definitely related to pevonedistat may receive an additional cycle of treatment. After completion of study treatment, patients are followed up for 30 days.

Interventions

DRUGAzacitidine

Given IV

DRUGCytarabine

Given intrathecally and IV

DRUGFludarabine Phosphate

Given IV

DRUGMethotrexate

Given intrathecally

DRUGPevonedistat

Given IV

DRUGTherapeutic Hydrocortisone

Given intrathecally

Sponsors

Children's Oncology Group
CollaboratorNETWORK
National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
1 Months to 21 Years
Healthy volunteers
No

Inclusion criteria

* Patients must have had histologic verification of AML at the original diagnosis. Patients must have one of the following: * Recurrent disease in \>= 1st relapse with \>= 5% blasts in the bone marrow (M2/M3) marrow OR immunophenotypic evidence of disease with \>= 0.1% blasts detected by flow cytometry, OR evidence of recurrent cytogenetic or molecular abnormalities consistent with relapse, with or without extramedullary disease * Refractory AML is defined as \>= 5% blasts in the bone marrow (M2/M3) after \>= 2 induction attempts (i.e., 2 cycles of chemotherapy) * Patients with advanced MDS, including MDS that has progressed to AML, and have experienced relapse or are refractory after \>= 1 course of induction therapy, are eligible * Karnofsky \>= 50% for patients \> 16 years of age and Lansky \>= 50 for patients =\< 16 years of age * Patients must have fully recovered from the acute toxic effects of all prior anti-cancer therapy and must meet the following minimum duration from prior anti-cancer directed therapy prior to enrollment. If after the required timeframe, the numerical eligibility criteria are met, e.g., blood count criteria, the patient is considered to have recovered adequately * Cytotoxic chemotherapy or other anti-cancer agents known to be myelosuppressive * \>= 14 days must have elapsed after the completion of other cytotoxic therapy, with the exception of hydroxyurea, for patients not receiving standard maintenance therapy. Additionally, patients must have recovered from all acute toxic effects of prior therapy * NOTE: Cytoreduction with hydroxyurea must be discontinued \>= 24 hours prior to the start of protocol therapy * Anti-cancer agents not known to be myelosuppressive (e.g. not associated with reduced platelet or absolute neutrophil \[ANC\] counts): \>= 7 days after the last dose of agent * Antibodies: \>= 21 days must have elapsed from infusion of last dose of antibody, and toxicity related to prior antibody therapy must be recovered to grade =\< 1 * Hematopoietic growth factors: \>= 14 days after the last dose of a long-acting growth factor (e.g. pegfilgrastim) or 7 days for short-acting growth factor. For agents that have known adverse events occurring beyond 7 days after administration, this period must be extended beyond the time during which adverse events are known to occur. The duration of this interval must be discussed with the study chair and the study-assigned research coordinator * Interleukins, interferons and cytokines (other than hematopoietic growth factors): \>= 21 days after the completion of interleukins, interferon or cytokines (other than hematopoietic growth factors) * Stem cell Infusions (with or without traumatic brain injury \[TBI\]): * Allogeneic (non-autologous) bone marrow or stem cell transplant, or any stem cell infusion including donor leukocyte infusion (DLI) or boost infusion: \>= 84 days after infusion and no evidence of graft versus host disease (GVHD) * Autologous stem cell infusion including boost infusion: \>= 42 days * Cellular Therapy: \>= 30 days after the completion of any type of cellular therapy (e.g. modified T cells, natural killer \[NK\] cells, dendritic cells, etc.) * Radiation therapy (XRT)/external beam irradiation including protons: \>= 14 days after local XRT; \>= 42 days after TBI, craniospinal XRT or if radiation to \>= 50% of the pelvis; \>= 42 days if other substantial brain metastases (BM) radiation * Radiopharmaceutical therapy (e.g., radiolabeled antibody, 131 iodine \[I\]-metaiodobenzylguanidine \[MIBG\]): \>= 42 days after systemically administered radiopharmaceutical therapy * Patients must not have received prior exposure to MLN4924 (pevonedistat) * Creatinine clearance or radioisotope glomerular filtration rate (GFR) \>= 60 ml/min/1.73 m\^2 or a serum creatinine based on age/gender as follows: * 1 month to \< 6 months; 0.4 (male and female) * 6 months to \< 1 year; 0.5 (male and female) * 1 to \< 2 years; 0.6 (male and female) * 2 to \< 6 years; 0.8 (male and female) * 6 to \< 10 years; 1 (male and female) * 10 to \< 13 years; 1.2 (male and female) * 13 to \< 16 years; 1.5 (male) and 1.4 (female) * \>= 16 years; 1.7 (male) and 1.4 (female) * Bilirubin (sum of conjugated + unconjugated) =\< upper limit of normal (ULN) for age * Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) =\< 2.5 x ULN. For the purpose of this study, the ULN for serum glutamate pyruvate transaminase (SGPT) is 45 U/L * Shortening fraction of \>= 27% by echocardiogram, or * Ejection fraction of \>= 50% by echocardiogram or radionuclide angiogram * No ventricular or supraventricular arrhythmia on electrocardiogram (EKG) * Prolonged rate corrected QT (QTc) interval \< 500 msec * Pulse oximetry \> 94% on room air if there is clinical indication for determination (e.g. dyspnea at rest) * International normalized ratio (INR) =\< 1.5 * Hemoglobin \> 8.0 g/dL (may receive red blood cell \[RBC\] transfusions) * All patients and/or their parents or legally authorized representatives must sign a written informed consent. Assent, when appropriate, will be obtained according to institutional guidelines

Exclusion criteria

* Pregnant or breast-feeding women will not be entered on this study due to risks of fetal and teratogenic adverse events as seen in animal/human studies, OR because there is yet no available information regarding human fetal or teratogenic toxicities. Pregnancy tests must be obtained in girls who are post-menarchal. Males or females of reproductive potential may not participate unless they have agreed to use 1 highly effective and 1 additional effective (barrier) method of contraception at the same time for the duration of study therapy and for 4 months after the completion of MLN4924 (pevonedistat) administration. True abstinence, when this is in line with the preferred and usual lifestyle of the subject, is acceptable. Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods), withdrawal, spermicides only, and lactational amenorrhea are not acceptable methods of contraception * Investigational drugs: Patients who are currently receiving another investigational drug are not eligible * Anti-cancer agents: Patients who are currently receiving other anti-cancer agents are not eligible (except hydroxyurea, which may be continued until 24 hours prior to start of protocol therapy) * Anti-GVHD agents post-transplant: Patients who are receiving cyclosporine, tacrolimus or other systemic agents to prevent graft-versus-host disease post bone marrow transplant are not eligible for this trial. Topical immunosuppressive agents (e.g. topical steroids) are allowed. Physiologic replacement of hydrocortisone is allowed * Patients who are taking drugs that are strong CYP3A4 inducers and cannot be switched to alternative drugs 14 days prior to enrollment are not eligible. Strong inducers of CYP34 are not permitted during the study * Patients with known hepatitis B surface antigen seropositive or known or suspected active hepatitis C infection are not eligible. NOTE: Patients who have isolated positive hepatitis B core antibody (i.e. in the setting of negative hepatitis B surface antigen and negative hepatitis B surface antibody) must have an undetectable hepatitis B viral load. Patients who have positive hepatitis C antibody may be included if they have an undetectable hepatitis C viral load * Patients with known hepatic cirrhosis or severe pre-existing hepatic impairment are not eligible * Patients with uncontrolled high blood pressure (i.e., \>= 99% for age) are not eligible * Patients with any of the following diagnoses: * Acute promyelocytic leukemia * Down syndrome * Juvenile myelomonocytic leukemia * Patients who have a documented active uncontrolled infection are not eligible * History of allergic reactions attributed to compounds of similar chemical or biologic composition as the study agent * Patients with human immunodeficiency virus (HIV) are not eligible unless they meet all of the following criteria: * CD4 count \> 350 cell/mm\^3 * Undetectable viral load * Maintained on modern therapeutic regimens utilizing non-CYP-interactive agents * No history of acquired immunodeficiency syndrome (AIDS)-defining opportunistic infections * Female patients who intend to donate eggs (ova) during the course of this study or 4 months after receiving their last dose of study drug(s) are not eligible * Male patients who intend to donate sperm during the course of this study or 4 months after receiving their last dose of study drug(s) are not eligible

Design outcomes

Primary

MeasureTime frameDescription
Maximum Time to Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDSUp to 5 daysMedian (Range) of the maximum time to concentration of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.
Elimination Half-life of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDSUp to 5 daysMedian (Range) of the elimination half-life of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.
Maximum Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDSUp to 5 daysMedian (Range) of the maximum concentration of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.
Number of Participants With Dose Limiting Toxicities of MLN4924 (Pevonedistat)Up to 35 daysFrequency of patients with dose limiting toxicity in the first cycle of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level among patients in the dose escalation cohort.
Number of Participants With Adverse Events Attributable to MLN4924 (Pevonedistat)Up to 70 daysFrequency of patients with at least one grade 3 adverse event at least possibly attributable to MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level.
Area Under the Plasma Concentration Versus Time Curve of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDSUp to 5 daysMedian (Range) of the area under the plasma concentration versus time curve of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.
Total Plasma Clearance of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDSUp to 5 daysMedian (Range) of the total plasma clearance of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.

Secondary

MeasureTime frameDescription
Number of Participants With Antitumor Activity of MLN4924 (Pevonedistat)Up to 1 yearFrequency of participants with best overall response by dose level of PR or CR for MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction Per Response Evaluation Criteria for CR (M1 bone marrow (\< 5% blasts) with no evidence of circulating blasts or extramedullary disease and with recovery of peripheral blood counts (ANC \> 1000/uL and platelet count \> 100,000/uL), CRp (M1 bone marrow (\< 5% blasts) and no evidence of circulating blasts or extramedullary disease and with recovery of ANC \> 1000/uL and platelet transfusion independence), CRi (M1 bone marrow (\<5% blasts) and no evidence of circulating blasts or extramedullary disease and with ANC \< 1000/uL or platelet count \< 100,000/uL without platelet transfusion independence), or PR (M2 marrow status (\> 5% or \< 25% blasts cells) and at least 50% decrease in bone marrow blast percent from baseline.

Other

MeasureTime frameDescription
Messenger Ribonucleic Acid (mRNA) Transcript Levels of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDSUp to 5 daysMedian (IQR) transcript levels of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level.

Countries

United States

Participant flow

Pre-assignment details

All patients were treated at the 20 mg/m2 dosing. An initial 6 patients were treated in this stratum to ensure this dose was feasible with the backbone therapy and then an additional 6 patients were treated in the PK stratum at this same dose to gain additional PK data.

Participants by arm

ArmCount
Stratum 1 With 20 mg/m^2
Treatment (cytarabine, azacitidine, pevonedistat, fludarabine)
6
PK With 20 mg/m^2
Treatment (cytarabine, azacitidine, pevonedistat, fludarabine)
6
Total12

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLack of Efficacy44
Overall StudyPhysician Decision21

Baseline characteristics

CharacteristicStratum 1 With 20 mg/m^2PK With 20 mg/m^2Total
Age, Categorical
<=18 years
6 Participants5 Participants11 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants1 Participants1 Participants
Age, Continuous9.5 years16.5 years13 years
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants3 Participants4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
5 Participants3 Participants8 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
2 Participants0 Participants2 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants1 Participants3 Participants
Race (NIH/OMB)
White
2 Participants5 Participants7 Participants
Sex: Female, Male
Female
3 Participants4 Participants7 Participants
Sex: Female, Male
Male
3 Participants2 Participants5 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 6
other
Total, other adverse events
6 / 66 / 6
serious
Total, serious adverse events
6 / 66 / 6

Outcome results

Primary

Area Under the Plasma Concentration Versus Time Curve of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS

Median (Range) of the area under the plasma concentration versus time curve of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.

Time frame: Up to 5 days

Population: All eligible patients

ArmMeasureValue (MEDIAN)
Stratum 1 With 20 mg/m^2Area Under the Plasma Concentration Versus Time Curve of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS1004.9 hr*ng/mL
PK With 20 mg/m^2Area Under the Plasma Concentration Versus Time Curve of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS1047.4 hr*ng/mL
Primary

Elimination Half-life of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS

Median (Range) of the elimination half-life of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.

Time frame: Up to 5 days

Population: All eligible patients

ArmMeasureValue (MEDIAN)
Stratum 1 With 20 mg/m^2Elimination Half-life of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS4.7 Hour
PK With 20 mg/m^2Elimination Half-life of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS5.5 Hour
Primary

Maximum Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS

Median (Range) of the maximum concentration of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.

Time frame: Up to 5 days

Population: All eligible patients

ArmMeasureValue (MEDIAN)
Stratum 1 With 20 mg/m^2Maximum Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS248.5 ng/mL
PK With 20 mg/m^2Maximum Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS213 ng/mL
Primary

Maximum Time to Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS

Median (Range) of the maximum time to concentration of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.

Time frame: Up to 5 days

Population: All eligible patients

ArmMeasureValue (MEDIAN)
Stratum 1 With 20 mg/m^2Maximum Time to Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS1.2 Hour
PK With 20 mg/m^2Maximum Time to Concentration of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS1.1 Hour
Primary

Number of Participants With Adverse Events Attributable to MLN4924 (Pevonedistat)

Frequency of patients with at least one grade 3 adverse event at least possibly attributable to MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level.

Time frame: Up to 70 days

Population: All eligible patients

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Stratum 1 With 20 mg/m^2Number of Participants With Adverse Events Attributable to MLN4924 (Pevonedistat)6 Participants
PK With 20 mg/m^2Number of Participants With Adverse Events Attributable to MLN4924 (Pevonedistat)6 Participants
Primary

Number of Participants With Dose Limiting Toxicities of MLN4924 (Pevonedistat)

Frequency of patients with dose limiting toxicity in the first cycle of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level among patients in the dose escalation cohort.

Time frame: Up to 35 days

Population: All eligible patients

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Stratum 1 With 20 mg/m^2Number of Participants With Dose Limiting Toxicities of MLN4924 (Pevonedistat)1 Participants
PK With 20 mg/m^2Number of Participants With Dose Limiting Toxicities of MLN4924 (Pevonedistat)2 Participants
Primary

Total Plasma Clearance of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS

Median (Range) of the total plasma clearance of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level measured pre-dose, end of infusion, 4-6 hours, and 24 hours post-dose infusion on Days 1 and 5.

Time frame: Up to 5 days

Population: All eligible patients

ArmMeasureValue (MEDIAN)
Stratum 1 With 20 mg/m^2Total Plasma Clearance of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS20.1 L/h/m^2
PK With 20 mg/m^2Total Plasma Clearance of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS19.2 L/h/m^2
Secondary

Number of Participants With Antitumor Activity of MLN4924 (Pevonedistat)

Frequency of participants with best overall response by dose level of PR or CR for MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction Per Response Evaluation Criteria for CR (M1 bone marrow (\< 5% blasts) with no evidence of circulating blasts or extramedullary disease and with recovery of peripheral blood counts (ANC \> 1000/uL and platelet count \> 100,000/uL), CRp (M1 bone marrow (\< 5% blasts) and no evidence of circulating blasts or extramedullary disease and with recovery of ANC \> 1000/uL and platelet transfusion independence), CRi (M1 bone marrow (\<5% blasts) and no evidence of circulating blasts or extramedullary disease and with ANC \< 1000/uL or platelet count \< 100,000/uL without platelet transfusion independence), or PR (M2 marrow status (\> 5% or \< 25% blasts cells) and at least 50% decrease in bone marrow blast percent from baseline.

Time frame: Up to 1 year

Population: All eligible patients

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Stratum 1 With 20 mg/m^2Number of Participants With Antitumor Activity of MLN4924 (Pevonedistat)1 Participants
PK With 20 mg/m^2Number of Participants With Antitumor Activity of MLN4924 (Pevonedistat)2 Participants
Other Pre-specified

Messenger Ribonucleic Acid (mRNA) Transcript Levels of MLN4924 (Pevonedistat) Added to the 3-drug Backbone of Azacitidine (Aza), Fludarabine, and Cytarabine Re-induction for Pediatric Patients With Recurrent/Refractory AML and MDS

Median (IQR) transcript levels of MLN4924 (pevonedistat) added to the 3-drug backbone of azacitidine (aza), fludarabine, and cytarabine re-induction for pediatric patients with recurrent/refractory AML and MDS by dose level.

Time frame: Up to 5 days

Source: ClinicalTrials.gov · Data processed: Feb 15, 2026