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Acute Myeloid LeukemiaPhase 2TRILLIUMNCT06456463

A Study of Tagraxofusp in Combination With Venetoclax and Azacitidine in Adults With Untreated CD123+ Acute Myeloid Leukemia Who Cannot Undergo Intensive Chemotherapy

A Phase 2 study testing Tagraxofusp, Venetoclax and Azacitidine in people with Acute Myeloid Leukemia, run by Stemline Therapeutics, Inc. at 32 sites in 2 countries.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

This study will be divided into 2 parts (Part 1 and Part 2). Part 1 will evaluate 2 doses of tagraxofusp (9 and 12 micrograms/kilogram/day [μg/kg/day]), used in combination with venetoclax and azacitidine, to determine the dose for Part 2. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Acute Myeloid Leukemia
What is being tested?
Tagraxofusp, Venetoclax and Azacitidine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
85 participants
Where
32 sitesin 2 countries
Study dates
14 Jan 2025to 11 Feb 2030
Phase
Phase 2
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Previously untreated with histological confirmation of AML by World Health Organization 2022 criteria and are ineligible for treatment with a standard cytarabine and anthracycline induction regimen due to age, or comorbidity.
  • Participant has any level of CD123 expression on blasts.
  • Participants must be considered ineligible for intensive chemotherapy, defined by the following:
  • ≥75 years of age; or
  • ≥18 to 74 years of age with at least 1 of the following:
  • Eastern Cooperative Oncology Group (ECOG) performance status of 2 or 3.
Show all 13Show fewer
  • Diffusing capacity of the lung for carbon monoxide of ≤65% or forced expiratory volume in 1 second ≤65%.
  • Baseline creatinine clearance ≥30 to <45 milliliters/minute calculated by the Cockcroft Gault formula or measured by 24-hour urine collection.
  • Hepatic disorder with total bilirubin >1.5 x upper limit of normal.
  • Any other condition for which the physician judges the participant to be unsuitable for intensive chemotherapy.
  • ECOG performance status:
  • 0 to 2 for participants ≥75 years of age, or
  • 0 to 3 for participants ≥18 to 74 years of age.

Who cannot join

  • Participant has received prior therapy for AML.
  • Participant is willing and able to receive standard induction therapy.
  • Participant has received treatment for an antecedent hematologic disease with a hypomethylating agent, venetoclax, tagraxofusp, purine analogue, cytarabine, intensive chemotherapy, SCT, chimeric antigen receptor-T therapy, or other experimental therapies.
  • Participant has AML with central nervous system involvement.
  • Note: Other inclusion/exclusion criteria may apply.

Trial locations and contacts

32 sites in 2 countries.

32 sites in 2 countries

United States24 sites
  • Dana Farber Cancer Institute (DFCI)

    Boston, Massachusetts, 02114

  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

  • Beth Israel Deaconess Medical Center

    Boston, Massachusetts, 02215

  • Roswell Park Cancer Institute

    Buffalo, New York, 14203

  • Novant Health Presbyterian Medical Center

    Charlotte, North Carolina, 28204

  • University of Chicago

    Chicago, Illinois, 60637

  • Cleveland Clinic Foundation

    Cleveland, Ohio, 44195

  • Baylor Scott & White Health

    Dallas, Texas, 75246

  • Henry Ford Health System Brigitte Harris Cancer Pavillion

    Detroit, Michigan, 48202

  • John Theurer Cancer Center - Hackensack Meridian Health

    Hackensack, New Jersey, 07601

  • University of Texas MD Anderson Cancer Center

    Houston, Texas, 77030

  • University of California, Los Angeles

    Los Angeles, California, 90095

  • North Shore University Hospital

    Manhasset, New York, 11030

  • University of Miami

    Miami, Florida, 33136

  • Sarah Cannon, the Cancer Institute of HCA Healthcare

    Nashville, Tennessee, 37203

  • Tennessee Oncology

    Nashville, Tennessee, 37203

  • Rutgers Cancer Institute

    New Brunswick, New Jersey, 08901

  • NYU Langone Health

    New York, New York, 10016

  • Columbia University Irving Medical Center

    New York, New York, 10032

  • AdventHealth Cancer Institute

    Orlando, Florida, 32804

  • Sydney Kimmel (Thomas Jefferson University)

    Philadelphia, Pennsylvania, 19107

  • Washington University - Siteman Cancer Center

    St Louis, Missouri, 63110

  • Stanford Health Care

    Stanford, California, 94305

  • Novant Health Derrick L Davis Cancer Center

    Winston-Salem, North Carolina, 27103

Other trials in United States

Australia8 sites
  • Royal Adelaide Hospital

    Adelaide, South Australia, 5000

  • Box Hill Hospital

    Box Hill, Victoria, 3128

  • Monash Medical Centre

    Clayton, Victoria, 3168

  • Concord Repatriation General Hospital

    Concord, New South Wales, 2139

  • Townsville Hospital

    Douglas, Queensland, 4814

  • St. Vincents Hospital

    Fitzroy, Victoria, 3065

  • Austin Hospital

    Heidelberg, Victoria, 3084

  • Royal Perth Hospital

    Perth, Western Australia, 6000

Other trials in Australia

About this study

Official title: A Phase II Multicenter Open-label Trial of Tagraxofusp (Tag) in Combination With Venetoclax and Azacitidine (Ven/Aza) in Adults With Previously Untreated CD123+ Acute Myeloid Leukemia (AML) Who Are Ineligible for Intensive Chemotherapy

This study will be divided into 2 parts (Part 1 and Part 2). Part 1 will evaluate 2 doses of tagraxofusp (9 and 12 micrograms/kilogram/day [μg/kg/day]), used in combination with venetoclax and azacitidine, to determine the dose for Part 2. This determined dose, in combination with venetoclax and azacitidine, will then be further evaluated in Part 2 in 2 cohorts (TP53 mutated and TP53 wild type). Both parts will be conducted in participants with previously untreated CD123+ AML who are ineligible for intensive chemotherapy.

Being tested
Tagraxofusp, Venetoclax, Azacitidine
Keywords
CD123+, Tagraxofusp, Venetoclax, Azacitidine
Medical subject headings
Leukemia, Myeloid, Acute

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TagraxofuspDrug

    Also called Tag, Elzonris

    Tagraxofusp will be administered by intravenous infusion for 3 consecutive days during each 28-day cycle.

  • VenetoclaxDrug

    Also called Ven, Venclexta

    Venetoclax will be administered as an oral tablet (400 milligrams [mg]) daily, with ramp up in Cycle 1, and should be continued at target dose (400 mg) for the remainder of Cycle 1 and subsequent cycles of 28 days each.

  • AzacitidineDrug

    Also called Aza, Vidaza

    Azacitidine will be administered subcutaneously or by intravenous infusion (75 milligrams/square meter) over 7 days of each 28-day cycle, per institutional guidelines/physician choice.

Study groups in NCT06456463
Study groupRoleWhat they receive
Part 1 - Tagraxofusp (9 μg/kg/day)ExperimentalParticipants will receive tagraxofusp in combination with venetoclax and azacitidine.
Receives: Drug: Tagraxofusp; Drug: Venetoclax; Drug: Azacitidine
Part 1 - Tagraxofusp (12 μg/kg/day)ExperimentalParticipants will receive tagraxofusp in combination with venetoclax and azacitidine.
Receives: Drug: Tagraxofusp; Drug: Venetoclax; Drug: Azacitidine
Part 2 - Tagraxofusp (Selected Dose) and TP53 Wild TypeExperimentalParticipants (TP53 wild type) will receive tagraxofusp in combination with venetoclax and azacitidine.
Receives: Drug: Tagraxofusp; Drug: Venetoclax; Drug: Azacitidine
Part 2 - Tagraxofusp (Selected Dose) and TP53 MutatedExperimentalParticipants (TP53 mutated) will receive tagraxofusp in combination with venetoclax and azacitidine.
Receives: Drug: Tagraxofusp; Drug: Venetoclax; Drug: Azacitidine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Part 1: Determination of Part 2 Selected Dose of Tagraxofusp When Administered in Combination with Venetoclax and Azacitidine

    Measured: Cycles 1-4 (up to 112 days; 28 days/cycle)

  2. Part 2: Number of Participants Achieving a Best Overall Response (BOR) of Complete Remission (CR)

    Measured: Cycles 1-4 (up to 112 days; 28 days/cycle)

Secondary outcomes (19)
  1. Parts 1 and 2: Number of Participants Achieving a BOR of CR

    Measured: Cycles 1-6 (up to 168 days; 28 days/cycle)

  2. Parts 1 and 2: Time to First CR

    The time to first CR will be defined as the time from randomization (Cycle 1, Day 1) to the date of first documented CR.

    Measured: Cycles 1-6 (up to 168 days; 28 days/cycle)

  3. Parts 1 and 2: Duration of Response

    Measured: Cycles 1-6 (up to 168 days; 28 days/cycle)

  4. Parts 1 and 2: Number of Participants Achieving a BOR of CR, CR with Incomplete Hematologic Recovery (CRi), or CR with Partial Hematologic Recovery (CRh)

    Measured: Cycles 1-4 (up to 112 days; 28 days/cycle)

  5. Parts 1 and 2: Time to First Composite CR

    The time to first composite CR will be defined as the time from randomization (Cycle 1, Day 1) to the date of first documented CR, CRi, or CRh.

    Measured: Cycles 1-4 (up to 112 days; 28 days/cycle)

  6. Parts 1 and 2: Number of Participants Achieving a BOR of CR or CRi

    Measured: Cycles 1-6 (up to 168 days; 28 days/cycle)

  7. Parts 1 and 2: Time to first CR/CRi

    The time to first CR/CRi will be defined as the time from randomization (Cycle 1, Day 1) to the date of first documented CR or CRi.

    Measured: Cycles 1-6 (up to 168 days; 28 days/cycle)

  8. Parts 1 and 2: Event-free Survival (EFS)

    EFS will be defined as the time from the date of randomization (Cycle 1, Day 1) until the date of treatment failure, hematologic relapse after CR/CRi/CRh, or death from any cause, whichever occurs first.

    Measured: Up to approximately 6 years

  9. Parts 1 and 2: CR with Minimal Residual Disease (MRD) Negative

    Defined as the number of participants with a presence of marrow MRD of less than 0.01% at the time of CR.

    Measured: Cycles 1-6 (up to 168 days; 28 days/cycle)

  10. Parts 1 and 2: Number of Participants Who Bridged to Stem Cell Transplant (SCT) Through Study Treatment

    Measured: Up to approximately 6 years

  11. Part 1: Plasma Concentration of Free Tagraxofusp, Venetoclax, and Azacitidine

    Measured: Predose, up to 8 hours post dose (Days 4, 5, 6, 7, 14; Cycles 1-4; 28 days/cycle)

  12. Part 2: Plasma Concentration of Free Tagraxofusp and Venetoclax

    Measured: Predose, up to 8 hours post dose (Days 4, 5, 6, 7, 14; Cycles 1-4; 28 days/cycle)

  13. Parts 1 and 2: Number of Participants With Serum Anti-drug Antibodies for Tagraxofusp, Venetoclax, and Azacitidine

    Measured: Day 4 of each cycle (each cycle is 28 days) up to the end of study (approximately 6 years)

  14. Parts 1 and 2: Exposure-response of Free Tagraxofusp When Administered in Combination with Venetoclax and Azacitidine

    The exposure-response relationship will be assessed utilizing the CR rate/composite CR rate and the number of participants experiencing adverse events of interest. This model-based analysis will be conducted to compare the exposure and response of free tagraxofusp, venetoclax, and azacitidine with venetoclax and azacitidine. Results will be reported as percent probability, wherein changes in the percent probability would indicate corresponding changes in the response rates with changes in exposure.

    Measured: Up to approximately 6 years

  15. Parts 1 and 2: Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)

    Measured: Up to approximately 6 years

  16. Parts 1 and 2: Overall Survival

    Measured: Up to approximately 6 years

  17. Parts 1 and 2: Maximum Plasma Concentration (Cmax) of Tagraxofusp and Venetoclax

    Measured: Predose, up to 8 hours post dose (Days 4, 5, 6, 7, 14; Cycles 1-4; 28 days/cycle)

  18. Parts 1 and 2: Time to Reach Cmax (Tmax) of Tagraxofusp and Venetoclax

    Measured: Predose, up to 8 hours post dose (Days 4, 5, 6, 7, 14; Cycles 1-4; 28 days/cycle)

  19. Parts 1 and 2: Area Under the Concentration-time Curve (AUC) of Tagraxofusp and Venetoclax

    Measured: Predose, up to 8 hours post dose (Days 4, 5, 6, 7, 14; Cycles 1-4; 28 days/cycle)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Jun 2024
  2. Study start14 Jan 2025
  3. Primary completion9 Feb 2028 (estimated)
  4. Study completion11 Feb 2030 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Sequential
Model description
Part 1 (randomized) will evaluate 2 dose levels of tagraxofusp in parallel. The decision to proceed to Part 2 (non-randomized) will be based upon review of cumulative data from Part 1.
Masking
None (open label)
Enrolment
85 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06456463
Sponsor's protocol ID
STML-401-0423
Other IDs
U1111-1290-9087, 2024-514660-48
Acronym
TRILLIUM
Status last verified
Aug 2026
First submitted
31 May 2024
Last updated
6 Aug 2026
Results posted
No
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Tagraxofusp, Venetoclax and Azacitidine in people with Acute Myeloid Leukemia, run by Stemline Therapeutics, Inc. at 32 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 13 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 6 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 32 sites in United States, Australia. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Part 1: Determination of Part 2 Selected Dose of Tagraxofusp When Administered in Combination with Venetoclax and Azacitidine (time frame: Cycles 1-4 (up to 112 days; 28 days/cycle)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Aug 2026.

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