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Milademetan Tosylate and Low-Dose Cytarabine With or Without Venetoclax in Treating Participants With Recurrent or Refractory Acute Myeloid Leukemia

A Phase I/II Study of the Oral MDM2 Inhibitor DS-3032b (Milademetan) in Combination With Low Dose Cytarabine (LDAC) in Patients With Newly Diagnosed or Relapsed/Refractory Acute Myeloid Leukemia (AML)

Status
Terminated
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03634228
Enrollment
16
Registered
2018-08-16
Start date
2018-12-17
Completion date
2022-04-03
Last updated
2023-06-15

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

Conditions

Acute Myeloid Leukemia, Recurrent Acute Myeloid Leukemia, Refractory Acute Myeloid Leukemia

Brief summary

This phase I/II trial studies the side effects and best dose of milademetan tosylate and to see how well it works with cytarabine with or without ventoclax in treating participants with acute myeloid leukemia that has come back (recurrent) or that does not respond to treatment (refractory). Milademetan tosylate and ventoclax may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as 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. It is not yet known if giving milademetan tosylate and low-dose cytarabine with or without ventoclax will work better in treating participants with recurrent or refractory acute myeloid leukemia.

Detailed description

If you are found to be eligible to take part in this study, you will be assigned to a study group based on when you join this study. If you are enrolled in Phase 1, the dose of DS-3032b you receive will depend on when you join this study. If you are enrolled in Phase 2, you will receive DS-3032b at the highest dose that was tolerated in Phase 1. All participants will receive LDAC at a fixed dose (meaning the dose will not change). If you are assigned to receive it, your dose of venetoclax will not change either. However, if needed because you have side effects, your dose may be adjusted. Up to 58 participants will be enrolled in this study. All will take part at MD Anderson.

Interventions

DRUGCytarabine

Given SC

DRUGMilademetan Tosylate

Given PO

DRUGVenetoclax

Given PO

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Diagnosis of acute myeloid leukemia (AML) by World Health Organization (WHO) 2016 criteria. Patients will be divided into 2 arms during the phase 2 portion: * Arm A: Subjects must have newly diagnosed AML * Arm B: Subjects must have refractory or relapsed AML * TP53 wild-type status on molecular testing performed within the last 3 months * Eastern Cooperative Oncology Group (ECOG) performance status =\< 3 * Creatinine clearance \>= 60 mL/min, as calculated using the modified Cockcroft-Gault equation OR creatinine =\< 1.5 x upper limit of normal (ULN) * Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) =\< 3 x ULN * Bilirubin =\< 1.5 x ULN, unless resulting from hemolysis, Gilbert's disease or considered to be due to leukemic involvement * No gastrointestinal issues to interfere with oral medication absorption * No active uncontrolled infection or comorbidity that would interfere with therapy or place patient at increased risk * Subject (male and female) of childbearing/reproductive potential must agree to use double-barrier contraceptive measures or avoid intercourse during the study and for 90 days after the last dose of study drug * Subject must sign and date an Institutional Review Board-approved informed consent form (including Health Insurance Portability and Accountability Act authorization, if applicable) before performance of any study-specific procedures or tests * Able and willing to provide bone marrow biopsies/aspirates as requested by the protocol * Willing to undergo malignancy genotyping for TP53 mutation, insertion, or deletion at screening * Use of hydroxyurea is allowed prior to and during the first cycle of study treatment. 1-2 doses of cytarabine are also permitted if needed for cytoreduction prior to initiating study treatment

Exclusion criteria

* Patient with t(15;17) karyotypic abnormality or a diagnosis of acute promyelocytic leukemia * Patient with other malignancy that contains a non-synonymous mutation, insertion, or deletion in the TP53 gene determined previously or at screening * Prior treatment with an MDM2 inhibitor * Presence of central nervous system involvement of leukemia. History of prior leptomeningeal leukemia/disease that has fully resolved is eligible * A second concurrent primary malignancy that has required systemic anti-neoplastic treatment within the previous 6 months, except for localized cancers that have apparently been cured, for example non-melanoma skin cancer, superficial bladder cancer, or carcinoma in situ of the cervix or breast * Any condition that would preclude adequate absorption of DS-3032b, including refractory vomiting, malabsorption, biliary shunt, significant bowel resection, and/or graft-versus-host disease (GVHD) affecting the gut * Any active uncontrolled infection, known human immunodeficiency virus infection, or active hepatitis B or C infection * Any concomitant medical condition that would in the opinion of the investigator increase the risk of toxicity * Unresolved toxicities from previous anticancer therapy, defined as toxicities (other than alopecia) not yet resolved to National Cancer Institute (NCI)-Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5, grade =\< 1 or baseline. Subjects with chronic grade 2 toxicities may be eligible per discretion of the investigator and sponsor (e.g., grade 2 chemotherapy-induced neuropathy) * Patient having received hematopoietic stem cell transplantation (HSCT) within 60 days of the first dose of DS-3032b, is on immuno-suppressive therapy post-HSCT at the time of screening, or has clinically significant GVHD (use of topical steroids for ongoing skin GVHD will be permitted) * Prolongation of corrected QT interval using Fridericia's method (QTcF) at rest, where the mean QTcF interval is \>= 450 ms for males or \>= 470 ms for females based on electrocardiograms (ECGs). Patients with right bundle branch block (RBBB) will be eligible after discussion with principal investigator (PI) * Pregnant or breastfeeding * Substance abuse or medical, psychological, or social conditions that, in the opinion of the investigator, may interfere with the subject's participation in the clinical study or evaluation of the clinical study results

Design outcomes

Primary

MeasureTime frameDescription
Maximum Tolerated Dose (MTD) (Phase I)Up to 28 daysAs determined by dose limiting toxicity (DLT). MTD is defined the highest dose at which no more than one patient out of 6 patients experience DLTs in the first cycle. A 3+3 algorithm will be applied for dose escalation or dose de-escalation.
Participants With a ResponseUp to 3 years, 4 monthsResponse is Complete Response (CR) + Complete Response with Incomplete Blood Count Recovery (CRi) + Partial Response (PR) + Morphologic Leukemia -Free State (MLFS: CR is Bone marrow blasts \< 5%; absence of circulating blasts and blasts with Auer rods; absence of extra-medullary disease; ANC \>/= 1.0 x 10\^9/L; platelet count \>/= 100 x 10\^9/L. CRi is CR except for ANC \< 1.0 x 10\^9 or platelet count , 100 x 10\^9/L. PR is decreased bone marrow blast % by at least 50% to a value of 5% to 25% and ANC \>/= 1.0 x 10\^9/L; platelet count \>/= 100 x 10\^9/L. MLFS is Bone marrow blasts \< 5%; abcence of blasts with Auer rods; absence of extra-medullary disease; no hematologic recovery required.

Secondary

MeasureTime frameDescription
Overall SurvivalUp to 3 years, 4 monthsTime from date of treatment start until date of death due to any cause or last Follow-up.
Event Free Survival (EFS)Up to 3 years, 4 monthsTime from date of treatment start until the date of first objective documentation of disease-relapse.

Countries

United States

Participant flow

Participants by arm

ArmCount
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 0
Patients receive low dose cytarabine SC BID on days 1-10 and milademetan tosylate PO QD on days 8-14, 8-21, or 5-7 and 15-17. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Cytarabine: Given SC Milademetan Tosylate: Given 120 mg PO
3
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 1
Patients receive low dose cytarabine SC BID on days 1-10 and milademetan tosylate PO QD on days 8-14, 8-21, or 5-7 and 15-17. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Cytarabine: Given SC Milademetan Tosylate: Given 200 mg PO
6
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 2
Patients receive low dose cytarabine SC BID on days 1-10 and milademetan tosylate PO QD on days 8-14, 8-21, or 5-7 and 15-17. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Cytarabine: Given SC Milademetan Tosylate: Given 260 mg PO
7
Total16

Baseline characteristics

CharacteristicPhase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 1Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 2TotalPhase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 0
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
4 Participants3 Participants9 Participants2 Participants
Age, Categorical
Between 18 and 65 years
2 Participants4 Participants7 Participants1 Participants
Age, Continuous70 years53 years70 years72 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants1 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants3 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants0 Participants
Race (NIH/OMB)
White
4 Participants5 Participants11 Participants2 Participants
Region of Enrollment
United States
6 participants7 participants16 participants3 participants
Sex: Female, Male
Female
6 Participants4 Participants11 Participants1 Participants
Sex: Female, Male
Male
0 Participants3 Participants5 Participants2 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
2 / 34 / 61 / 7
other
Total, other adverse events
2 / 30 / 60 / 7
serious
Total, serious adverse events
3 / 36 / 67 / 7

Outcome results

Primary

Maximum Tolerated Dose (MTD) (Phase I)

As determined by dose limiting toxicity (DLT). MTD is defined the highest dose at which no more than one patient out of 6 patients experience DLTs in the first cycle. A 3+3 algorithm will be applied for dose escalation or dose de-escalation.

Time frame: Up to 28 days

ArmMeasureValue (NUMBER)
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b)Maximum Tolerated Dose (MTD) (Phase I)260 Milligrams
Primary

Participants With a Response

Response is Complete Response (CR) + Complete Response with Incomplete Blood Count Recovery (CRi) + Partial Response (PR) + Morphologic Leukemia -Free State (MLFS: CR is Bone marrow blasts \< 5%; absence of circulating blasts and blasts with Auer rods; absence of extra-medullary disease; ANC \>/= 1.0 x 10\^9/L; platelet count \>/= 100 x 10\^9/L. CRi is CR except for ANC \< 1.0 x 10\^9 or platelet count , 100 x 10\^9/L. PR is decreased bone marrow blast % by at least 50% to a value of 5% to 25% and ANC \>/= 1.0 x 10\^9/L; platelet count \>/= 100 x 10\^9/L. MLFS is Bone marrow blasts \< 5%; abcence of blasts with Auer rods; absence of extra-medullary disease; no hematologic recovery required.

Time frame: Up to 3 years, 4 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b)Participants With a Response0 Participants
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 1Participants With a Response1 Participants
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 2Participants With a Response1 Participants
Secondary

Event Free Survival (EFS)

Time from date of treatment start until the date of first objective documentation of disease-relapse.

Time frame: Up to 3 years, 4 months

ArmMeasureValue (MEDIAN)
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b)Event Free Survival (EFS)1.9 Months
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 1Event Free Survival (EFS)2.4 Months
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 2Event Free Survival (EFS)1.8 Months
Secondary

Overall Survival

Time from date of treatment start until date of death due to any cause or last Follow-up.

Time frame: Up to 3 years, 4 months

ArmMeasureValue (MEDIAN)
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b)Overall Survival2.1 Months
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 1Overall Survival4.3 Months
Phase I (Low Dose Cytarabine, MDM2 Inhibitor DS-3032b) Cohort 2Overall Survival7.6 Months

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026