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RecruitingNCT06969430Updated Oct 23, 2026

A Study to Assess the Safety, Tolerability, and Antileukemic Activity of Debio 1562M in Participants With Acute Myeloid Leukemia (AML)

A Phase 1/2 interventional study of Debio 1562M in Acute Myeloid Leukemia, sponsored by Debiopharm International SA. Recruiting at 7 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-23.

Sponsored by Debiopharm International SA (part of Debiopharm) · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started May 2025; still recruiting 1 year 5 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
154
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The primary purpose of Phase 1 is to characterize the safety and tolerability to identify the recommended dose (RD) of Debio 1562M for further development.

The primary objective of Phase 2 is to evaluate the antileukemic activity of Debio 1562M.

02

Conditions studied

  • Acute Myeloid Leukemia
03

In context

Leukemia, Myeloid, Acute

3,667 studies on the registry are indexed under Leukemia, Myeloid, Acute; 816 are open to participants now.

This study's planned enrollment of 154 is above the median of 40 across 3,005 interventional studies indexed under Leukemia, Myeloid, Acute.

Browse Leukemia, Myeloid, Acute studies →

Lead sponsor

Debiopharm International SA is the lead sponsor of 51 studies on the registry; 6 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 6 (67%) have results posted.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • For Phase 1-Dose escalation: (R/R) AML (excluding acute promyelocytic leukemia) based on World Health Organization (WHO) Classification 2022 and relapsed/refractory higher-risk myelodysplastic syndrome (R/R HR -MDS) (includes high- and very high-risk MDS) as confirmed by the Revised International Prognostic Scoring System (IPSS-R) for whom no standard therapy of proven benefit is available.
  • For Phase1-Dose optimization and Phase 2: R/R AML (excluding acute promyelocytic leukemia) based on world health organization (WHO) classification 2022 for whom no standard therapy of proven benefit is available.
  • performance (ECOG PS) status ≤2.
  • Previous treatment-related toxicities must be resolved to ≤Grade 1 (excluding alopecia).
  • Individuals with prior autologous or allogeneic bone marrow (BM) transplant are eligible.
  • Prior transplant must meet the following conditions: the transplant must have been performed more than 120 days before the first administration of Debio 1562M, the participant must not have ≥Grade 1 active (GvHD) at the time of trial treatment start and must be off all for at least 2 weeks prior to starting treatment with Debio 1562M. use [equivalent to ≤20 milligrams (mg) prednisone] before and during the trial is allowed as long as this is not being used as post-transplant immunosuppression or graft versus host disease (GVHD) directed therapy.
  • Adequate renal and hepatic function defined as:

    1. Estimated (eGFR) ≥60 milliliter per minute (mL/min) based on the chronic kidney disease-Epidemiology Collaboration based on creatinine (CKD-EPIcr) 2021 equation.
    2. (AST) and alanine aminotransferase (ALT) ≤3 × (ULN).
    3. Serum total level ≤1.5× ULN (for participants with Gilbert's syndrome or chronic blood transfusions, total bilirubin ≤3.0× ULN).

Exclusion criteria

Exclusion criteria:

  • Any prior exposure to cluster of differentiation (CD) 37 targeting agents.
  • Clinically active infection including known active or C, infection, or cytomegalovirus or any other known concurrent infectious disease that, in the judgment of the Investigator, would make a participant inappropriate for enrollment into this trial (retesting not required).
  • cardiac dysfunction within 6 months before enrollment including Class III or IV heart failure, uncontrolled angina, myocardial infraction, severe uncontrolled ventricular arrhythmias, corrected for HR according to Fridericia's formula (QTcF) >470 ms.
  • Clinically significant and active cardiopulmonary disease.
  • Other , except of:

    1. Hematologic malignancies other than those being investigated for which individuals are not on active antineoplastic therapy
    2. Nonhematologic malignancies in remission and for which individuals must have completed all antineoplastic therapy at least 6 months before trial treatment start and all treatment-related toxicities must have resolved to ≤Grade 1.
  • Evidence for active central nervous system (CNS) leukemia involvement. If the participant has a prior history of CNS AML, the participant must have at least 2 negative cerebrospinal fluid (CSF) analyses and either a magnetic resonance imaging (MRI) or computed tomography (CT) (if MRI is not feasible) of the brain demonstrating no evidence of CNS disease.
  • Evidence of peripheral neuropathy Grade ≥2.
  • History of to Debio 1562M (including its components), or any of its .
  • Treatment with any antileukemic therapy including chemotherapy, immunotherapy, radiotherapy, hormonal, biologic, or any agent within 14 days or within 5 half-lives of the investigational treatment prior to first dose of trial treatment, whichever is shorter. Hydroxyurea may be given prior to and after trial treatment start for control of leukocytosis.
  • Major surgery within 4 weeks prior to the start of treatment, or participant who have not recovered from side effects of the surgery.
  • Pregnancy or breastfeeding.

Note: Other Inclusion/Exclusion criteria may apply.

Terms in these criteria, in plain language(19)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

GVHD (graft-versus-host disease)

After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
154 participants (estimated)

Study arms

  • Experimental
    Phase 1 (Dose Escalation): Debio 1562M

    Participants will receive Debio 1562M intravenously in escalating doses, once in every 3 weeks (Q3W) and once in every week (QW), during each 21-day treatment cycle until progression of disease, unacceptable toxicity, participant's withdrawal, or Investigator's decision, or end of study whichever occurs first.

    Drug: Debio 1562M

  • Experimental
    Phase 1 (Dose Optimization): Debio 1562M

    Participants will be randomised 1:1 to receive 1 of the 2 Debio 1562M dose(s) and/or dosing schedule(s) selected based on the results from the Phase 1-Dose escalation for further investigation.

    Drug: Debio 1562M

  • Experimental
    Phase 2: Debio 1562M

    Participants will receive RD of Debio 1562M based on the results from Phase 1-Dose optimization.

    Drug: Debio 1562M

Interventions

  • DrugDebio 1562M

    Administered as intravenous (IV) infusion

06

What researchers measure

Primary outcomes

  1. Phase 1 (Dose Escalation): Number of Participants Experiencing Dose-Limiting Toxicities (DLTs)

    Time frame: Up to Day 28

  2. Phase 1: Number of Participants With at Least One Treatment-Emergent Adverse Event (TEAE)

    Time frame: Up to Day 219

  3. Phase 1 (Dose Optimization): Recommended Dose (RD) of Debio 1562M

    Time frame: Up to Day 198

  4. Phase 2: Percentage of Participants With Complete Remission (CR) + CR with partial hematological recovery (CRh)

    Time frame: Up to Day 198

Secondary outcomes

  1. Phases 1 and 2: Overall Response (OR)

    Time frame: Up to Day 198

  2. Phases 1 and 2: Percentage of Participants with CR

    Time frame: Up to Day 198

  3. Phase 1: Percentage of Participants With CR+ CRh

    Time frame: Up to Day 198

  4. Phases 1 and 2: Percentage of Participants With Composite Complete Remission (cCR)

    Time frame: Up to Day 198

  5. Phases 1 and 2: Percentage of Participants With Allogeneic Hematopoietic Stem Cell Transplant (ASCT)

    Time frame: Up to Day 198

  6. Phases 1 and 2: Change From Baseline in Blood Blast Count

    Time frame: Baseline upto Day 198

  7. Phases 1 and 2: Duration of Remission (DOR)

    Time frame: Up to Day 198

  8. Phases 1 and 2: Relapse Free Survival (RFS)

    Time frame: Up to Day 198

  9. Phase 1 (Dose Optimization) and Phase 2: Event Free Survival (EFS)

    Time frame: Up to Day 198

  10. Phase 1 (Dose Optimization) and Phase 2: Overall Survival (OS)

    Time frame: Up to Day 198

  11. Phases 1 and 2: Plasma Concentration of Debio 1562M and its Metabolites

    Time frame: Pre-dose and at multiple time points up to Day 198

  12. Phase 1 (Dose Optimization) and Phase 2: Number of Participants With at Least One Treatment-Emergent Adverse Event (TEAE)

    Time frame: Up to Day 219

07

Study locations

7 of 7 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

1 registry update since Sep 25, 2026
Minor edits
Nothing that changes what the study is or who can join. Edited: verification date
1 update, last Oct 23, 2026
Show all 1 update
  1. Oct 23, 2026
    Minor edits only
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT06969430
Responsible party
Sponsor
First posted
May 13, 2025
Start date
May 30, 2025
Primary completion
Nov 2031 (estimated)
Completion
Nov 2031 (estimated)
Last update
Oct 23, 2026

Study contacts

Debiopharm International S.A
Contact
clinicaltrials@debiopharm.com
+41 213210111

Oversight

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

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