Hematological MalignancyPhase 1/2NCT07873827
KATALYST-HEME-01: Study of the KAT6 Inhibitor MEN2312 in Heme Malignancies
A Phase 1/2 study testing MEN2312 in people with Hematological Malignancy, run by Stemline Therapeutics, Inc..
Trial summary
This study will evaluate safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and activity of MEN2312 in participants with hematological malignancies. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Hematological Malignancy
- What is being tested?
- MEN2312
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 115 participants
- Where
- No sites listed yet
- Study dates
- 30 Oct 2026to 12 May 2030
- Phase
- Phase 1/2
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
- Participant must have a diagnosis of relapsed or refractory acute myeloid leukemia (AML), including de novo or therapy-related AML (tAML) according to World Health Organization (WHO) 2022 and/or International Consensus Classification 2022 (ICC) 2022.
- Participants must have a leukocyte count < 25,000/microliters (μL) (< 25 × 10^9/liter [L]) prior to Cycle 1 Day 1.
- Adequate organ function defined as:
- Renal Function:
- Calculated creatinine clearance (CrCl) > 50 milliliters (mL)/minute for age-appropriate determination (for example, Cockcroft Gault formula)
- Hepatic Function:
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- Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 3 × upper limit of normal (ULN)
- Total serum bilirubin level < 1.5 × ULN (unless due to a known history of Gilbert's disease and Direct Bilirubin is within normal limits [≤ 1 ULN])
- Cardiac Function:
- Left ventricular ejection fraction (LVEF) ≥ 50 % or the institutional lower limit of normal, as determined by echocardiogram (ECHO) or multigated acquisition (MUGA) scan performed within 30 days before the first dose of MEN2312.
- No clinically significant uncontrolled cardiac arrhythmia or other clinically significant cardiac condition that, in the opinion of the Investigator, would increase the risk associated with study participation.
- Performance Status:
- Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2.
- Participants must have recovered to Grade ≤ 1 (or baseline, if clinically appropriate) from clinically significant toxicities of prior anticancer therapy, except for alopecia or toxicities considered irreversible and not expected to increase the risk associated with MEN2312, as determined by the Investigator.
- Participant is able and willing to adhere to the trial visit schedule and other protocol requirements.
Who cannot join
- Participant received prior treatment with KAT6 inhibitor.
- Participant has a concurrent malignancy or prior malignancy (except myelodysplastic syndromes [MDS]) and has not been in remission within the 1-year period before screening.
- Participant with relapsed/refractory (R/R) AML who had received previous Chimeric Antigen Receptor T-cell (CAR-T) treatment for an antecedent hematologic disease.
- Participant has a diagnosis of blastic transformation of chronic myeloid leukemia (CML) or acute promyelocytic leukemia (APL).
- Participants with active central nervous system (CNS) involvement by AML are excluded. Participants with a history of CNS leukemia are eligible provided that CNS disease has resolved before the first dose of MEN2312, as demonstrated by at least one negative cerebrospinal fluid (CSF) assessment obtained within 7 days before Cycle 1 Day 1.
- Any significant medical condition that, in the opinion of the Investigator, would place the participant at unacceptable risk if they were to participate in the trial.
- Participant is pregnant or breastfeeding.
- Note: Other protocol-defined inclusion/exclusion criteria may apply.
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: A Phase 1/2, Open-label, Multicenter Trial to Evaluate the Pharmacokinetics, Pharmacodynamics, Safety, Tolerability, and Efficacy of MEN2312 (KAT6 Inhibitor) in Participants With Hematological Malignancies
This study will evaluate safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and activity of MEN2312 in participants with hematological malignancies.
- Conditions
- Hematological Malignancy
- Being tested
- MEN2312
- Keywords
- Small molecule inhibitor of K (lysine) acetyltransferase (KAT) 6, KAT6, MEN2312, Acute myeloid leukemia, AML, Hematological malignancy
- Medical subject headings
- Hematologic Neoplasms, Leukemia, Myeloid, Acute
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
MEN2312Drug
Oral tablets
| Study group | Role | What they receive |
|---|---|---|
| Part A: MEN2312 Dose Escalation | Experimental | Participants will receive escalating doses of MEN2312 orally once daily (QD) for all days of a 28-day treatment cycle. Receives: Drug: MEN2312 |
| Part B: MEN2312 Dose Optimization | Experimental | Participants will receive MEN2312 (at a dose selected based on dose escalation Part A data) orally QD for all days of a 28-day treatment cycle. Receives: Drug: MEN2312 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Part A: Number of Participants With Dose-limiting Toxicities (DLTs)
Measured: Cycle 1 (28 days)
Part A: Number of Participants Experiencing Severe Toxicity
Measured: Cycle 1 Day 1 through the completion of Cycle 4 (each cycle length = 28 days) (maximum duration: 112 days)
Part B: Overall Response Rate (ORR) per Central Laboratory Assessment
Measured: Up to approximately 1.5 years
Part B: Number of Participants With Treatment-emergent Adverse Events (TEAEs)
Measured: Up to approximately 1.5 years
Secondary outcomes (20)
Part A: Number of Participants With TEAEs
Measured: Up to approximately 3.5 years
Part A: ORR Assessed Locally by the Investigator
Measured: Up to approximately 3.5 years
Part A: Rate of Composite Complete Remission (CRc)
Measured: Up to approximately 3.5 years
Part B: Rate of Complete Remission (CR)/Complete Remission With Partial Hematologic Recovery (CRh) per Central Laboratory Assessment
Measured: Up to approximately 3.5 years
Part B: Rate of CRc per Central Laboratory Assessment
Measured: Up to approximately 3.5 years
Part B: Time to First CR
Measured: Up to approximately 3.5 years
Part B: Duration of CR
Measured: Up to approximately 3.5 years
Part B: Time to First CR/CRh
Measured: Up to approximately 3.5 years
Part B: Duration of CR/CRh
Measured: Up to approximately 3.5 years
Part B: Time to First CRc
Measured: Up to approximately 3.5 years
Part B: Duration of CRc
Measured: Up to approximately 3.5 years
Part B: Time to First Overall Response
Measured: Up to approximately 3.5 years
Part B: Duration of Overall Response
Measured: Up to approximately 3.5 years
Part B: Rate of Measurable Residual Disease (MRD) Negativity as Assessed Locally
Measured: Up to approximately 3.5 years
Part B: Event-free Survival (EFS)
Measured: Up to approximately 3.5 years
Part B: Overall Survival (OS)
Measured: Up to approximately 3.5 years
Part B: Percentage of Participants who Proceed to Hematopoietic Stem Cell Transplantation (HSCT)
Measured: Up to approximately 3.5 years
Part A and Part B: Area Under the Curve (AUC) of MEN2312
Measured: Cycle 1 Day 1 (during Part A only), Cycle 2 Day 8, and Cycle 1 Day 15 (each cycle length = 28 days)
Part A and Part B: Maximum Plasma Concentration (Cmax) of MEN2312
Measured: Cycle 1 Day 1 (during Part A only), Cycle 2 Day 8, and Cycle 1 Day 15 (each cycle length = 28 days)
Part A and Part B: Time to Reach Cmax (Tmax) of MEN2312
Measured: Cycle 1 Day 1 (during Part A only), Cycle 2 Day 8, and Cycle 1 Day 15 (each cycle length = 28 days)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Oct 2026
- Study start30 Oct 2026 (estimated)
- Primary completion12 May 2028 (estimated)
- Study completion12 May 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hematological MalignancyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 1/2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Sequential
- Model description
- Participants will be randomly assigned into Part B dose optimization cohorts to receive a dose of MEN2312 selected based on dose escalation Part A data.
- Masking
- None (open label)
- Enrolment
- 115 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Stemline Therapeutics, Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Medical Director, Study director, Stemline Therapeutics, Inc.
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07873827
- Sponsor's protocol ID
- MEN2312-02
- Other IDs
- U1111-1326-7878
- Status last verified
- Oct 2026
- First submitted
- 8 Oct 2026
- Last updated
- 14 Oct 2026
- Results posted
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No