Safety, Tolerability and Pharmacokinetics of Milademetan Alone and With 5-Azacitidine (AZA) in Acute Myelogenous Leukemia (AML) or High-Risk Myelodysplastic Syndrome (MDS)
TerminatedPhase 1Results postedLast updated 11 October 2021
What this trial tests
Phase 1 trial testing Milademetan in Acute Myelogenous Leukemia in 74 participants. Terminated before completion.
18 and older, any sex, with Acute Myelogenous Leukemia or Myelodysplastic Syndrome. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Number of Participants With Dose-Limiting Toxicities (DLTs) Following Administration of Milademetan Alone and In Combination With 5-Azacitidine (AZA)Primary· From the date the participant signed the informed consent form up to 5 years of first participant enrolled
A DLT was defined as any treatment-emergent adverse event not attributable to disease or disease-related processes occurring during the observation period (Cycle 1) in each dose-level cohort and is Grade (Gr) 3 or higher according to NCI CTCAE Version 5.0 (Version 4.03 before 01 Apr 2018), with these exceptions: for elevations in hepatic function enzymes, a DLT is defined as: Gr ≥3 aspartate aminotransferase (AST)/alanine aminotransferase (ALT) levels lasting \>3 days; AST/ALT \>5 × ULN if accompanied by ≥Gr 2 elevation in bilirubin. Potential DLTs include: Participants who are unable to compl
Number of Participants (≥10%) With Treatment-emergent Adverse Events (TEAEs) Following Administration of Milademetan Alone and In Combination With 5-Azacitidine (AZA)Primary· From the date the participant signed the informed consent form up to 30 days after the last dose in the last participant, up to approximately 6 years of first participant enrolled
A treatment-emergent adverse event (TEAE) is defined as an adverse event that emerges during the treatment period (up to 30 days after last dose), having been absent at pre-treatment; or reemerges during treatment, having been present at baseline but stopped prior to treatment; or worsens in severity after starting treatment relative to the pre-treatment state, when the adverse event is continuous.
Maximum Plasma Concentration (Cmax) Following Administration of Milademetan AloneSecondary· Predose, 1 hour (hr), 2 hr, 3 hr, 6 hr, 8 hr, 10 hr of Cycle 1, Day 1 (Cohorts 1-9d) and Cycle 1, Day 15 (Cohorts 1-5 and 7c) (each cycle is 28 days)
Pharmacokinetic parameter maximum plasma concentration (Cmax) of milademetan was assessed at select time points and the geometric means (coefficient of variation %) are presented.
Cycle 1, Day 1
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
386.0
± 42.2
Cohort 2: Milademetan 90 mg
342.5
± 23.4
Cohort 3: Milademetan 120 mg
505.9
± 56.8
Cohort 4: Milademetan 160 mg
622.3
± 94.5
Cohort 5: Milademetan 210 mg
747.9
± 48.1
Cohort 6b: Milademetan 160 mg
440.0
± 74.7
Cohort 7c: Milademetan 160 mg
758.1
± 44.8
Cohort 8d: Milademetan 160 mg
657.0
± 27.2
Cohort 9d: Milademetan 220 mg
1607.4
± 34.4
Cycle 1, Day 15
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
498.5
± 40.3
Cohort 2: Milademetan 90 mg
562.6
± 58.6
Cohort 3: Milademetan 120 mg
614.3
± 55.3
Cohort 4: Milademetan 160 mg
753.8
± 79.8
Cohort 5: Milademetan 210 mg
1329.2
± 21.9
Cohort 6b: Milademetan 160 mg
NA
± NA
Cohort 7c: Milademetan 160 mg
669.2
± 46.0
Cohort 8d: Milademetan 160 mg
NA
± NA
Cohort 9d: Milademetan 220 mg
NA
± NA
Maximum Plasma Concentration (Cmax) Following Administration of Milademetan In Combination With 5-Azacitidine (AZA)Secondary· Predose, 0.5 hour (hr), 1 hr, 2 hr, 3 hr, 6 hr of Cycle 1, Day 1 (AZA); Predose, 0.5 hr, 1 hr, 2 hr, 3 hr, 4 hr, 6-10 hr of Day 5, Day 7 (predose) (Cohorts 10e and 12e), Day 8 (Cohorts 11f and 13f), and Day 14 (Cohorts 10e-13f) (each cycle is 28 days)
Pharmacokinetic parameter maximum plasma concentration (Cmax) was assessed at select time points and the geometric means (coefficient of variation %) are presented.
Time to Maximum Concentration (Tmax) Following Administration of Milademetan AloneSecondary· Predose, 1 hour (hr), 2 hr, 3 hr, 6 hr, 8 hr, 10 hr of Cycle 1, Day 1 (Cohorts 1-9d) and Cycle 1, Day 15 (Cohorts 1-5 and 7c) (each cycle is 28 days)
Pharmacokinetic parameter time to maximum concentration (Tmax) of milademetan was assessed at select time points.
Cycle 1, Day 1
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
3.00
2.00 – 6.25
Cohort 2: Milademetan 90 mg
4.39
1.98 – 6.08
Cohort 3: Milademetan 120 mg
3.00
2.00 – 6.25
Cohort 4: Milademetan 160 mg
4.50
1.90 – 6.07
Cohort 5: Milademetan 210 mg
3.00
3.00 – 8.07
Cohort 6b: Milademetan 160 mg
3.00
2.05 – 10.00
Cohort 7c: Milademetan 160 mg
3.08
2.00 – 6.00
Cohort 8d: Milademetan 160 mg
4.50
3.00 – 6.00
Cohort 9d: Milademetan 220 mg
4.56
3.00 – 6.17
Cycle 1, Day 15
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
3.00
2.00 – 3.28
Cohort 2: Milademetan 90 mg
2.99
2.00 – 6.00
Cohort 3: Milademetan 120 mg
3.00
2.00 – 6.00
Cohort 4: Milademetan 160 mg
2.96
1.08 – 6.00
Cohort 5: Milademetan 210 mg
4.50
2.92 – 6.00
Cohort 6b: Milademetan 160 mg
NA
NA – NA
Cohort 7c: Milademetan 160 mg
3.04
3.00 – 3.08
Cohort 8d: Milademetan 160 mg
NA
NA – NA
Cohort 9d: Milademetan 220 mg
NA
NA – NA
Time to Maximum Concentration (Tmax) Following Administration of Milademetan In Combination With 5-Azacitidine (AZA)Secondary· Predose, 0.5 hour (hr), 1 hr, 2 hr, 3 hr, 6 hr of Cycle 1, Day 1 (AZA); Predose, 0.5 hr, 1 hr, 2 hr, 3 hr, 4 hr, 6-10 hr of Day 5, Day 7 (predose) (Cohorts 10e and 12e), Day 8 (Cohorts 11f and 13f), and Day 14 (Cohorts 10e-13f) (each cycle is 28 days)
Pharmacokinetic parameter time to maximum concentration (Tmax) was assessed at select time points.
Trough Plasma Concentration (Ctrough) Following Administration of Milademetan AloneSecondary· Predose, 1 hour (hr), 2 hr, 3 hr, 6 hr, 8 hr, 10 hr of Cycle 1, Day 15 (Cohorts 1-5 and 7c) (each cycle is 28 days)
Pharmacokinetic parameter plasma concentration before next dose (Ctrough) of milademetan was assessed at Cycle 1, Day 15 and the geometric means (coefficient of variation %) are presented.
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
197.13
± 23.2
Cohort 2: Milademetan 90 mg
229.28
± 82.0
Cohort 3: Milademetan 120 mg
292.60
± 59.7
Cohort 4: Milademetan 160 mg
184.60
± 279.1
Cohort 5: Milademetan 210 mg
507.07
± 24.0
Cohort 7c: Milademetan 160 mg
NA
± NA
Area Under the Plasma Concentration Curve up to 24 Hours (AUC0-24) Following Administration of Milademetan AloneSecondary· Predose, 1 hour (hr), 2 hr, 3 hr, 6 hr, 8 hr, 10 hr of Cycle 1, Day 1 (Cohorts 1-9d) and Cycle 1, Day 15 (Cohorts 1-5 and 7c) (each cycle is 28 days)
Pharmacokinetic parameter area under the plasma concentration curve up to 24 hours (AUC0-24) of milademetan was assessed at select time points and the geometric means (coefficient of variation %) are presented.
Cycle 1, Day 1
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
4646.7
± 47.7
Cohort 2: Milademetan 90 mg
4478.1
± 31.2
Cohort 3: Milademetan 120 mg
6585.4
± 54.8
Cohort 4: Milademetan 160 mg
8315.1
± 101.2
Cohort 5: Milademetan 210 mg
9794.0
± 39.4
Cohort 6b: Milademetan 160 mg
7222.5
± 43.1
Cohort 7c: Milademetan 160 mg
10165.6
± 64.6
Cohort 8d: Milademetan 160 mg
8973.9
± 28.1
Cohort 9d: Milademetan 220 mg
20893.9
± 23.2
Cycle 1, Day 15
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
7244.6
± 28.9
Cohort 2: Milademetan 90 mg
8392.9
± 56.5
Cohort 3: Milademetan 120 mg
9854.9
± 54.6
Cohort 4: Milademetan 160 mg
10710.8
± 54.2
Cohort 5: Milademetan 210 mg
20330.2
± 15.9
Cohort 6b: Milademetan 160 mg
NA
± NA
Cohort 7c: Milademetan 160 mg
7714.3
± 30.5
Cohort 8d: Milademetan 160 mg
NA
± NA
Cohort 9d: Milademetan 220 mg
NA
± NA
Area Under the Plasma Concentration Curve up to 24 Hours (AUC0-24) Following Administration of Milademetan In Combination With 5-Azacitidine (AZA)Secondary· Predose, 0.5 hr, 1 hr, 2 hr, 3 hr, 4 hr, 6-10 hr of Cycle 1, Day 5 (Cohorts 10e and 12e) and Predose of Cycle 1, Day 14 (Cohorts 10e, 11f, and 12e) (each cycle is 28 days)
Pharmacokinetic parameter area under the plasma concentration curve up to 24 hours (AUC0-24) was assessed at select time points and the geometric means (coefficient of variation %) are presented.
Serum Macrophage Inhibitory Cytokine-1 (MIC-1) Fold Change From Baseline Following Administration of Milademetan AloneSecondary· Day 1 (6 hours postdose) up to Day 21-22 (predose), up to approximately 6 years of first participant enrolled
Pharmacodynamic biomarker serum macrophage inhibitory cytokine-1 (MIC-1) concentrations of milademetan were assessed for Cohorts 1 though 9d. Fold change is the ratio of post-baseline MIC-1 values with respect to the baseline values and is the measure of change of MIC-1 from baseline.
Day 1 (6 hours postdose)
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
3.14
± 1.23
Cohort 2: Milademetan 90 mg
2.78
± 0.95
Cohort 3: Milademetan 120 mg
3.36
± 1.38
Cohort 4: Milademetan 160 mg
3.00
± 0.88
Cohort 5: Milademetan 210 mg
4.25
± 1.41
Cohort 6b: Milademetan 160 mg
2.64
± 0.91
Cohort 7c: Milademetan 160 mg
3.36
± 1.49
Cohort 8d: Milademetan 160 mg
2.64
± 0.87
Cohort 9d: Milademetan 220 mg
4.94
± 2.22
Day 2 (predose)
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
2.53
± 0.83
Cohort 2: Milademetan 90 mg
3.31
± 1.25
Cohort 3: Milademetan 120 mg
3.97
± 2.71
Cohort 4: Milademetan 160 mg
3.44
± 1.63
Cohort 5: Milademetan 210 mg
5.06
± 2.62
Cohort 6b: Milademetan 160 mg
2.57
± 0.81
Cohort 7c: Milademetan 160 mg
3.84
± 1.74
Cohort 8d: Milademetan 160 mg
3.68
± 2.13
Cohort 9d: Milademetan 220 mg
8.09
± 3.27
Day 8 (predose)
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
4.13
± 2.46
Cohort 2: Milademetan 90 mg
6.35
± 4.61
Cohort 3: Milademetan 120 mg
7.41
± 7.17
Cohort 4: Milademetan 160 mg
5.13
± 2.64
Cohort 5: Milademetan 210 mg
9.70
± 7.96
Cohort 6b: Milademetan 160 mg
4.93
± 3.32
Cohort 7c: Milademetan 160 mg
1.44
± 0.36
Cohort 8d: Milademetan 160 mg
5.63
± 3.99
Cohort 9d: Milademetan 220 mg
13.68
± 10.72
Day 15 (predose)
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
2.88
± 0.64
Cohort 2: Milademetan 90 mg
5.64
± 4.94
Cohort 3: Milademetan 120 mg
6.04
± 3.49
Cohort 4: Milademetan 160 mg
5.54
± 3.49
Cohort 5: Milademetan 210 mg
9.28
± 7.26
Cohort 6b: Milademetan 160 mg
1.33
± 0.98
Cohort 7c: Milademetan 160 mg
1.13
± 0.41
Cohort 8d: Milademetan 160 mg
5.02
± 2.20
Cohort 9d: Milademetan 220 mg
6.61
± 4.64
Day 21-22 (predose)
Group
Value
95% CI
Cohort 1: Milademetan 60 mg
3.49
± 1.88
Cohort 2: Milademetan 90 mg
4.61
± 2.66
Cohort 3: Milademetan 120 mg
4.57
± 3.53
Cohort 4: Milademetan 160 mg
6.57
± 4.22
Cohort 5: Milademetan 210 mg
5.88
± 2.75
Cohort 6b: Milademetan 160 mg
0.48
± NA
Cohort 7c: Milademetan 160 mg
1.24
± NA
Cohort 8d: Milademetan 160 mg
0.83
± 0.45
Cohort 9d: Milademetan 220 mg
1.18
± 0.60
Serum Macrophage Inhibitory Cytokine-1 (MIC-1) Fold Change From Baseline Following Administration of Milademetan In Combination With 5-Azacitidine (AZA)Secondary· Day 5 (predose) up to Day 22 (predose), up to approximately 6 years of first participant enrolled
Pharmacodynamic biomarker serum macrophage inhibitory cytokine-1 (MIC-1) concentrations were assessed for Cohorts 10e though 13f. Fold change is the ratio of post-baseline MIC-1 values with respect to the baseline values and is the measure of change of MIC-1 from baseline.
Time frame: Treatment-emergent adverse events (TEAEs) were collected from the date the participant signed the informed consent form up to 30 days after the last dose of study drug, up to approximately 6 years of first participant enrolled..
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
This study will take place in parts:
* Dose Escalation (Part 1): Participants receive milademetan alone with different dose schedules
* Dose Escalation (Part 1A): Participants receive milademetan in combination with 5-azacytidine (AZA), with different dose schedules
The recommended dose for Part 2 will be selected.
* Dose Expansion (Part 2): After Part 1A, participants will receive the recommended Part 2 dose schedule. There will be three groups - those with:
1. refractory or relapsed acute myelogenous leukemia (AML)
2. newly diagnosed AML unfit for intensive chemotherapy
3. high-risk myelodysplastic syndrome (MDS)
* End-of-Study Follow-Up: Safety information will be collected until 30 days after the last treatment. This is the end of the study.
The recommended dose for the next study will be selected.
Publications & conference data
8 peer-reviewed publications reference this trial (live from Europe PMC):
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Daiichi Sankyo
Last refreshed: 11 October 2021
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT02319369.