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TerminatedNCT04478695Updated Mar 8, 2024Results posted

Study of AMG 330 in Combination With Pembrolizumab in Adult With Relapsed or Refractory Acute Myeloid Leukemia

A Phase 1 interventional study of AMG 330 and Pembrolizumab in Relapsed or Refractory Acute Myeloid Leukemia, sponsored by Amgen. Terminated at 2 sites in United States. Open to participants aged 18 Years to 120 Years. Per ClinicalTrials.gov, last updated 2024-03-08.

Sponsored by Amgen · Phase 1, Interventional, and Treatment

Why this study was terminated
Amgen Decision
Phase
Phase 1
Study type
Interventional
Enrollment
1
Allocation
Non-randomized
Ages
18 Years to 120 Years
Sex
All
01

Study summary

The primary objective of this study is to evaluate the safety and tolerability of AMG 330, administered in combination with pembrolizumab, in participants with relapsed or refractory acute myeloid leukemia (R/R AML).

Read the detailed description

This study will assess the safety and tolerability of AMG 330 in combination with pembrolizumab and whether pembrolizumab will enhance the anti-AML activity of AMG 330. Both cohort 1 and 2 will include AMG 330 and pembrolizumab with the difference being the initiation date for pembrolizumab treatment.

02

Conditions studied

  • Relapsed or Refractory Acute Myeloid Leukemia
03

In context

Leukemia

5,441 studies on the registry are indexed under Leukemia; 636 are open to participants now.

This study's enrollment of 1 is below the median of 38 across 4,247 interventional studies indexed under Leukemia.

Browse Leukemia studies →

Lead sponsor

Amgen is the lead sponsor of 1,015 studies on the registry; 49 are open to participants now.

Of its 245 completed or terminated interventional studies of FDA-regulated products, 159 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 120 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion criteria

  • AML as defined by the WHO Classification persisting or recurring following one or more treatment courses. Except APL
  • Eastern Cooperative Oncology Group (ECOG) ≤1

Key Exclusion criteria

  • Active extramedullary AML in the central nervous system.
  • Known hypersensitivity to immunoglobulins.
  • Non-manageable graft versus host disease.
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
1 participant (actual)

Study arms

  • Experimental
    Cohort 1

    Drug: AMG 330 · Drug: Pembrolizumab

  • Experimental
    Cohort 2

    Drug: AMG 330 · Drug: Pembrolizumab

Interventions

  • DrugAMG 330

    Continuous intravenous (IV) infusion.

  • DrugPembrolizumab

    Intravenous (IV) infusion.

06

What researchers measure

Primary outcomes

  1. Number of Participants Who Experienced Dose-limiting Toxicities (DLTs)

    A DLT was defined as any of the events described below occurring in a participant during the DLT window, unless clearly attributable to causes other than investigational product: Any treatment-related death, Grade 4 neutropenia, Grade 3-4 non hematologic toxicity not clearly resulting from the underlying leukemia, with some exceptions, cytokine release syndrome, and any Grade 5 toxicity.

    Time frame: 28 days

  2. Number of Participants Who Experienced Treatment-emergent Adverse Events (TEAEs)

    A TEAE was defined as any untoward medical occurrence in a clinical study participant irrespective of a causal relationship with the study treatment that occurred after first dose. Any clinically significant changes in vital signs, electrocardiograms (ECGs), and clinical laboratory tests that occurred after first dose were recorded as TEAEs.

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

  3. Number of Participants Who Experienced Treatment-related Adverse Events (TRAEs)

    A TRAE was defined as any untoward medical occurrence in a clinical study participant considered to have a possible causal relationship with the study treatment. Any clinically significant changes in vital signs, electrocardiograms (ECGs), and clinical laboratory tests that were considered to have a possible causal relationship with the study treatment were recorded as TRAEs.

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

Secondary outcomes

  1. Complete Remission Without Minimal Residual Disease (CRMRD-)

    CRMRD- was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). CRMRD- was defined as complete remission (CR) with negativity for a genetic marker by quantitative reverse transcription polymerase chain reaction (RT-qPCR), or CR with negativity by multiparametric flow cytometry (MFC). CR was defined as bone marrow blasts \<5%; absence of circulating blasts and blasts with Auer rods; absence of extramedullary disease; absolute neutrophil count (ANC) ≥ 1.0 x 109/L (1000/μL); platelet count ≥ 100 x 109/L (100 000/μL).

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

  2. Complete Remission (CR)

    CR was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). CR was defined as bone marrow blasts \<5%; absence of circulating blasts and blasts with Auer rods; absence of extramedullary disease; absolute neutrophil count (ANC) ≥ 1.0 x 109/L (1000/μL); platelet count ≥ 100 x 109/L (100 000/μL).

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

  3. CR With Incomplete Recovery (CRi)

    CRi was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). CRi was defined as all CR criteria (bone marrow blasts \<5%; absence of circulating blasts and blasts with Auer rods; absence of extramedullary disease; absolute neutrophil count (ANC) ≥ 1.0 x 109/L (1000/μL); platelet count ≥ 100 x 109/L \[100 000/μL\]), except for residual neutropenia (\< 1.0 x 109/L \[1000/μL\]) or thrombocytopenia (\< 100 x 109/L \[100 000/μL\]).

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

  4. Morphological Leukemia-free State (MLFS)

    MLFS was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). MLFS was defined as bone marrow blasts \< 5%; absence of blasts with Auer rods; absence of extramedullary disease; no hematologic recovery required.

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

  5. Partial Remission (PR)

    PR was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). PR was defined as all hematologic criteria of CR; decrease of bone marrow blast percentage to 5 to 25%; and decrease of pre-treatment bone marrow blast percentage by at least 50%.

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

  6. Duration of Response (DoR)

    DoR was calculated for participants who achieved overall response (CRMRD-, CR, CRi, PR or MLFS). DoR was defined as time from the first observation indicating an objective response to the subsequent date of disease progression or death, whichever is earlier.

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

  7. Plasma Concentration of AMG 330

    Time frame: Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

  8. Half-life of AMG 330

    Time frame: Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

  9. Steady State Concentration of AMG 330

    Time frame: Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

  10. Volume of Distribution of AMG 330

    Time frame: Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

  11. Clearance of AMG 330

    Time frame: Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

  12. Number of Participants With Anti-AMG 330 Antibody Formation

    Time frame: From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

07

Results

Posted Mar 8, 2024
Limitations and caveats
This study was early terminated, leading to a small number of participants enrolled and analyzed.

Participant flow

1 participant was enrolled into this study at 1 center in the United States.

Participant flow — Overall Study
MilestoneCohort 1Cohort 2
Started10
Received amg 33010
Received pembrolizumab00
Received dexamethasone10
Completed00
Not completed10
Withdrew: Death10

Outcome measures

PrimaryNumber of Participants Who Experienced Dose-limiting Toxicities (DLTs)

A DLT was defined as any of the events described below occurring in a participant during the DLT window, unless clearly attributable to causes other than investigational product: Any treatment-related death, Grade 4 neutropenia, Grade 3-4 non hematologic toxicity not clearly resulting from the underlying leukemia, with some exceptions, cytokine release syndrome, and any Grade 5 toxicity.

Time frame:
28 days

No measurements were reported for this outcome.

PrimaryNumber of Participants Who Experienced Treatment-emergent Adverse Events (TEAEs)

A TEAE was defined as any untoward medical occurrence in a clinical study participant irrespective of a causal relationship with the study treatment that occurred after first dose. Any clinically significant changes in vital signs, electrocardiograms (ECGs), and clinical laboratory tests that occurred after first dose were recorded as TEAEs.

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

PrimaryNumber of Participants Who Experienced Treatment-related Adverse Events (TRAEs)

A TRAE was defined as any untoward medical occurrence in a clinical study participant considered to have a possible causal relationship with the study treatment. Any clinically significant changes in vital signs, electrocardiograms (ECGs), and clinical laboratory tests that were considered to have a possible causal relationship with the study treatment were recorded as TRAEs.

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

SecondaryComplete Remission Without Minimal Residual Disease (CRMRD-)

CRMRD- was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). CRMRD- was defined as complete remission (CR) with negativity for a genetic marker by quantitative reverse transcription polymerase chain reaction (RT-qPCR), or CR with negativity by multiparametric flow cytometry (MFC). CR was defined as bone marrow blasts \<5%; absence of circulating blasts and blasts with Auer rods; absence of extramedullary disease; absolute neutrophil count (ANC) ≥ 1.0 x 109/L (1000/μL); platelet count ≥ 100 x 109/L (100 000/μL).

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

SecondaryComplete Remission (CR)

CR was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). CR was defined as bone marrow blasts \<5%; absence of circulating blasts and blasts with Auer rods; absence of extramedullary disease; absolute neutrophil count (ANC) ≥ 1.0 x 109/L (1000/μL); platelet count ≥ 100 x 109/L (100 000/μL).

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

SecondaryCR With Incomplete Recovery (CRi)

CRi was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). CRi was defined as all CR criteria (bone marrow blasts \<5%; absence of circulating blasts and blasts with Auer rods; absence of extramedullary disease; absolute neutrophil count (ANC) ≥ 1.0 x 109/L (1000/μL); platelet count ≥ 100 x 109/L \[100 000/μL\]), except for residual neutropenia (\< 1.0 x 109/L \[1000/μL\]) or thrombocytopenia (\< 100 x 109/L \[100 000/μL\]).

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

SecondaryMorphological Leukemia-free State (MLFS)

MLFS was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). MLFS was defined as bone marrow blasts \< 5%; absence of blasts with Auer rods; absence of extramedullary disease; no hematologic recovery required.

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

SecondaryPartial Remission (PR)

PR was measured according to the 2017 European Leukemia Net (ELN) criteria (Döhner et al, 2017). PR was defined as all hematologic criteria of CR; decrease of bone marrow blast percentage to 5 to 25%; and decrease of pre-treatment bone marrow blast percentage by at least 50%.

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

SecondaryDuration of Response (DoR)

DoR was calculated for participants who achieved overall response (CRMRD-, CR, CRi, PR or MLFS). DoR was defined as time from the first observation indicating an objective response to the subsequent date of disease progression or death, whichever is earlier.

Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

SecondaryPlasma Concentration of AMG 330
Time frame:
Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

No measurements were reported for this outcome.

SecondaryHalf-life of AMG 330
Time frame:
Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

No measurements were reported for this outcome.

SecondarySteady State Concentration of AMG 330
Time frame:
Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

No measurements were reported for this outcome.

SecondaryVolume of Distribution of AMG 330
Time frame:
Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

No measurements were reported for this outcome.

SecondaryClearance of AMG 330
Time frame:
Pre-dose, 6hrs post-dose Day 1 to 71 of Cycle 1 (Cycle 1=77 days), pre-dose, 6hrs post-dose Day 1 to 50 of Cycles 2+ (Cycle 2+=57 days); end of infusion,0.5,2,4 and 8hrs post-infusion on Days 78 and 57 of Cycle 1 and 2 infusion-free periods respectively

No measurements were reported for this outcome.

SecondaryNumber of Participants With Anti-AMG 330 Antibody Formation
Time frame:
From first dose of study treatment until 30 days after last dose, or end of study, whichever was earlier; median (min, max) duration was 0.79 (0.79, 0.79) months.

No measurements were reported for this outcome.

Adverse events

Collected over Mortality reporting was from enrollment until end of study; median (min, max) duration was 0.82 (0.82, 0.82) months.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Cohort 11/1 (100%)——

Baseline characteristics

The study was terminated with only 1 participant enrolled into Cohort 1 (0 participants were enrolled into Cohort 2). No data are reported here to maintain participant confidentiality.

Age, Continuous
Age, Continuous(years)Cohort 1Cohort 2Total
Sex: Female, Male
Sex: Female, Male(participants)Cohort 1Cohort 2Total
Female———
Male———
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(participants)Cohort 1Cohort 2Total
Hispanic or Latino———
Not Hispanic or Latino———
Unknown or Not Reported———
Race (NIH/OMB)
Race (NIH/OMB)(participants)Cohort 1Cohort 2Total
American Indian or Alaska Native———
Asian———
Native Hawaiian or Other Pacific Islander———
Black or African American———
White———
More than one race———
Unknown or Not Reported———
08

Study locations

2 sites
  • City of Hope National Medical Center
    Duarte, California 91010, United States
  • University of Texas MD Anderson Cancer Center
    Houston, Texas 77030, United States
09

References and documents

Study documents

  • Study protocol · May 4, 2020
  • Statistical analysis plan · Aug 25, 2020

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Yes — De-identified individual patient data for variables necessary to address the specific research question in an approved data sharing request.

Supporting information: Study protocol, Sap, Icf, Csr

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 8, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04478695
Lead sponsor
Amgen
Collaborators
Merck Sharp & Dohme LLC
Responsible party
Sponsor
First posted
Jul 21, 2020
Start date
Sep 29, 2020
Primary completion
Oct 23, 2020
Completion
Oct 23, 2020
Results posted
Mar 8, 2024
Last update
Mar 8, 2024

Study contacts

MD
study director · Amgen

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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