ATRN-119 in Combination With Decitabine in Patients With TP53-Mutated AML or Higher-Risk MDS

November 3, 2026 updated by: Washington University School of Medicine

A Phase I Study of ATRN-119, an ATR Inhibitor, in Combination With Decitabine in Patients With TP53-Mutated AML or Higher-Risk MDS

This single-center, open-label, phase I study will evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary antileukemic activity of ATRN-119 (mosipasertib) alone and in combination with decitabine in patients with TP53-mutated AML or higher-risk myelodysplastic syndrome (HR-MDS). The primary objective is to identify the maximum tolerated dose (MTD) and recommended dose(s) for expansion (RDE) of ATRN-119 (mosipasertib) plus decitabine. The study is based on the hypothesis that ATR inhibition with ATRN-119 (mosipasertib) will enhance sensitivity to decitabine in TP53-mutated disease, resulting in deeper and more durable clinical responses.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
36

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Missouri
      • St Louis, Missouri, United States, 63110
        • Washington University School of Medicine
        • Principal Investigator:
          • Geoffrey L Uy, MD
        • Sub-Investigator:
          • Daniel C Link, MD
        • Sub-Investigator:
          • J Scott Beeler, MD, PhD
        • Sub-Investigator:
          • Fei Wan, PhD
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of AML or higher-risk MDS (HR-MDS) according to the World Health Organization (WHO) 5th Edition or International Consensus Classification (ICC) 2022 criteria.

    • HR-MDS is defined as:

      • IPSS-R (score > 3.5) or IPSS-M (score > 0.5) OR
      • ≥ 10% bone marrow blasts

  • At least one of the following demonstrated on standard of care testing:

    • A pathogenic or likely pathogenic TP53 mutation with a VAF ≥10%
    • A TP53 or chromosome 17p deletion detected in ≥10% of cells by a cytogenetic assay
    • >20% p53-positive cells by immunohistochemistry

  • Meeting R/R disease criteria for AML or HR-MDS:

    • Patients with R/R AML must have received at least 1 prior AML-directed treatment regimen appropriate for their disease and fitness. Patients with FLT3, IDH1, IDH2, or NPM1 mutations must also have previously received, or been deemed ineligible for, an approved targeted therapy directed against the relevant mutation. In addition, patients must meet at least one of the following criteria:

      • Disease progression during treatment with, or failure to achieve CR, CRh, or CRi after ≥ 2 cycles of a hypomethylating agent (HMA) plus venetoclax.
      • Disease progression during treatment with, or failure to achieve CR, CRh, or CRi after ≥ 4 cycles of HMA-based therapy when venetoclax was contraindicated, not tolerated, or otherwise considered clinically inappropriate.
      • First relapse with an initial remission duration < 12 months
      • First relapse following failed salvage chemotherapy
      • Relapse after allogeneic hematopoietic cell transplant
      • Second or subsequent relapse

    • Patients with R/R HR-MDS must have received at least 1 prior MDS-directed treatment regimen appropriate for their disease and fitness. Patients with IDH1 mutations must also have previously received, or been deemed ineligible for, an approved targeted therapy directed against the relevant mutation. Patients must meet at least one of the following criteria:

      • Disease progression during treatment with, or failure to achieve CR, CRh, or CRi after ≥ 4 cycles of HMA-based therapy or 2 cycles of HMA in combination with another agent, including an investigational agent as part of a clinical trial or in routine clinical care.
      • Relapse after allogeneic hematopoietic cell transplant
      • Second or subsequent relapse

  • At least 18 years of age.

  • ECOG performance status ≤ 2

  • Adequate organ function within 28 days prior to the first dose of mosipasertib as defined below:

    • Total bilirubin ≤ 2.0 x IULN; patients with known or suspected Gilbert's syndrome may have total bilirubin ≤ 3 x IULN
    • AST(SGOT)/ALT(SGPT) ≤ 2.5 x IULN
    • Creatinine clearance ≥ 45 mL/min/1.73 m^2 by Cockcroft-Gault formula

  • The effects of mosipasertib and decitabine on the developing human fetus are unknown. For this reason, people of childbearing potential and people able to father a child must agree to use adequate contraception prior to study entry, for the duration of study participation, and for 6 months after the last dose of mosipasertib or decitabine on study (whichever is later) for people of childbearing potential and 3 monthsafter the last dose of mosipasertib or decitabine on study (whichever is later) for people able to father a child.

  • Ability to understand and willingness to sign an IRB approved written informed consent document. Legally authorized representatives may sign and give informed consent on behalf of study participants.

Exclusion Criteria:

  • Active CNS involvement by AML requiring therapeutic intervention.
  • Active graft-versus-host disease (GVHD) requiring systemic immunosuppressive therapy except for low-dose steroids (prednisone ≤ 10 mg per day or other steroid equivalent)
  • Prior or concurrent malignancy whose natural history has the potential to interfere with the safety or efficacy assessment of the investigational regimen. Patients with prior or concurrent malignancy that does NOT meet that definition are eligible for this trial.
  • Currently receiving any other investigational agents.
  • Concomitant systemic treatment with inhibitors of BCRP, OATP1B1, OATP1B3, OAT1, OAT3, OCT2, MATE1, or MATE2-K. Patients may be eligible after a washout period of at least 7 days or 5 half-lives, whichever is longer, prior to the first dose of ATRN-119.
  • Concomitant systemic treatment with strong inhibitors or inducers of CYP enzymes. Patients may be eligible after a washout period of 5 half-lives or 14 days (whichever is longer) before PK Run-In Day 1 or C1D1 (whichever is applicable) for strong inducers, and 5 half-lives or 7 days (whichever is longer) before PK Run-In Day 1 or C1D1 (whichever is applicable) for strong inhibitors.
  • A history of allergic reactions attributed to or known hypersensitivity to compounds of similar chemical or biologic composition to mosipasertib, decitabine, or other agents used in the study.
  • Persistent corrected QT interval using Fridericia's formula (QTcF) >480 msec (CTCAE v6.0 ≥ grade 2), except in patients with bundle branch block and/or ventricular paced rhythm for whom QTc cannot be reliably assessed using standard correction methods.
  • Uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, clinically significant autoimmune disease requiring systemic therapy, symptomatic congestive heart failure, unstable angina pectoris, or clinically significant or uncontrolled cardiac arrhythmia. Patients with a known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Function Classification; to be eligible for this trial, patients should be a class 2B or better.
  • Conditions that may impair oral drug administration or absorption, including inability to swallow oral medications, malabsorption syndromes, or other clinically significant gastrointestinal disorders.
  • Pregnant and/or breastfeeding. Women of childbearing potential must have a negative pregnancy test within 7 days of PK Run-In Day 1/Cycle 1 Day 1.
  • HIV-infected if not on effective anti-retroviral therapy with undetectable viral load for 6 months. Patients with HIV who are receiving effective anti-retroviral therapy and have had an undetectable viral load for at least 6 months are eligible. HIV testing is not required in the absence of known history of infection.
  • Evidence of chronic hepatitis B virus (HBV) that is detectable on suppressive therapy. Patients with evidence of chronic HBV infection with undetectable HBV viral load by PCR on suppressive therapy are eligible. HBV testing is not required in the absence of known history of infection.
  • History of hepatitis C virus (HCV) infection that has not been cured or that has a detectable viral load. Patients with a history of HCV that has been treated and cured are eligible. Patients with HCV infection who are currently on treatment and have an undetectable HCV viral load are eligible. HCV testing is not required in the absence of known history of infection.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Part A Dose Escalation Dose Level 1: ATRN-119
  • Patients will take ATRN-119 at the assigned dose level by mouth once per day on Days 1-28 of each 28-day cycle.
  • Patients in Part A may (but are not required to) transition to the current dose level being evaluated in Part B (and thus receive decitabine concurrently with mosipasertib) following completion of the Cycle 1 DLT evaluation period for all patients in their assigned dose level, provided that dose level is determined to be safe. In order to transition from Part A to Part B, a patient must have persistent AML or HR-MDS (meaning they must NOT have achieved a CR without MRD) and must meet all eligibility criteria. In addition, both they and their physician must be in agreement that the decision to transition is desired and acceptable.
  • Patients may continue treatment for up to 24 total cycles across Parts A and B unless disease is considered refractory after Cycle 4, or until disease progression, unacceptable toxicity, or withdrawal, whichever occurs first.
Drug: ATRN-119

Provided in 50 mg and 100 mg capsules or 50 mg and 250 mg tablets and are administered by mouth.

Other Names:
  • Mosipasertib
Experimental: Part A Dose Escalation Dose Level 2: ATRN-119
  • Patients will take ATRN-119 at the assigned dose level by mouth once per day on Days 1-28 of each 28-day cycle.
  • Patients in Part A may (but are not required to) transition to the current dose level being evaluated in Part B (and thus receive decitabine concurrently with mosipasertib) following completion of the Cycle 1 DLT evaluation period for all patients in their assigned dose level, provided that dose level is determined to be safe. In order to transition from Part A to Part B, a patient must have persistent AML or HR-MDS (meaning they must NOT have achieved a CR without MRD) and must meet all eligibility criteria. In addition, both they and their physician must be in agreement that the decision to transition is desired and acceptable.
  • Patients may continue treatment for up to 24 total cycles across Parts A and B unless disease is considered refractory after Cycle 4, or until disease progression, unacceptable toxicity, or withdrawal, whichever occurs first.
Drug: ATRN-119

Provided in 50 mg and 100 mg capsules or 50 mg and 250 mg tablets and are administered by mouth.

Other Names:
  • Mosipasertib
Experimental: Part A Dose Escalation Dose Level 3: ATRN-119
  • Patients will take ATRN-119 at the assigned dose level by mouth once per day on Days 1-28 of each 28-day cycle.
  • Patients in Part A may (but are not required to) transition to the current dose level being evaluated in Part B (and thus receive decitabine concurrently with mosipasertib) following completion of the Cycle 1 DLT evaluation period for all patients in their assigned dose level, provided that dose level is determined to be safe. In order to transition from Part A to Part B, a patient must have persistent AML or HR-MDS (meaning they must NOT have achieved a CR without MRD) and must meet all eligibility criteria. In addition, both they and their physician must be in agreement that the decision to transition is desired and acceptable.
  • Patients may continue treatment for up to 24 total cycles across Parts A and B unless disease is considered refractory after Cycle 4, or until disease progression, unacceptable toxicity, or withdrawal, whichever occurs first.
Drug: ATRN-119

Provided in 50 mg and 100 mg capsules or 50 mg and 250 mg tablets and are administered by mouth.

Other Names:
  • Mosipasertib
Experimental: Part B Dose Escalation Dose Level 1: ATRN-119 + Decitabine
  • Patients will take ATRN-119 at the assigned dose level by mouth once per day on Days 1-28 and 20 mg/m^2 of decitabine given intravenously (IV) on Days 1-5 of each 28-day cycle.
  • Patients may continue treatment for up to 24 total cycles unless disease is considered refractory after Cycle 4, or until disease progression, unacceptable toxicity, or withdrawal, whichever occurs first.
Drug: ATRN-119

Provided in 50 mg and 100 mg capsules or 50 mg and 250 mg tablets and are administered by mouth.

Other Names:
  • Mosipasertib
Drug: Decitabine

Decitabine is provided as a 50 mg injection in a single-dose vial.

Other Names:
  • Dacogen
Experimental: Part B Dose Escalation Dose Level 2: ATRN-119 + Decitabine
  • Patients will take ATRN-119 at the assigned dose level by mouth once per day on Days 1-28 and 20 mg/m^2 of decitabine given intravenously (IV) on Days 1-5 of each 28-day cycle.
  • Patients may continue treatment for up to 24 total cycles unless disease is considered refractory after Cycle 4, or until disease progression, unacceptable toxicity, or withdrawal, whichever occurs first.
Drug: ATRN-119

Provided in 50 mg and 100 mg capsules or 50 mg and 250 mg tablets and are administered by mouth.

Other Names:
  • Mosipasertib
Drug: Decitabine

Decitabine is provided as a 50 mg injection in a single-dose vial.

Other Names:
  • Dacogen
Experimental: Part B Dose Escalation Dose Level 3: ATRN-119 + Decitabine
  • Patients will take ATRN-119 at the assigned dose level by mouth once per day on Days 1-28 and 20 mg/m^2 of decitabine given intravenously (IV) on Days 1-5 of each 28-day cycle.
  • Patients may continue treatment for up to 24 total cycles unless disease is considered refractory after Cycle 4, or until disease progression, unacceptable toxicity, or withdrawal, whichever occurs first.
Drug: ATRN-119

Provided in 50 mg and 100 mg capsules or 50 mg and 250 mg tablets and are administered by mouth.

Other Names:
  • Mosipasertib
Drug: Decitabine

Decitabine is provided as a 50 mg injection in a single-dose vial.

Other Names:
  • Dacogen

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number and grade of treatment-emergent adverse events (TEAEs) as assessed via CTCAE v6.0 (All Patients)
Time Frame: From start of treatment until 30 days after last dose of ATRN-119 (approximately 23 months)
From start of treatment until 30 days after last dose of ATRN-119 (approximately 23 months)
Incidence of dose-limiting toxicities (DLTs) during Cycle 1 as assessed via CTCAE v6.0 (All Patients)
Time Frame: From Cycle 1 Day 1 to end of Cycle 1 Day 28/Cycle 1 Day 42 (total time 28-42 days)

The DLT evaluation period is 28 days from initiation of study treatment (Cycle 1), except in cases of persistent neutropenia meeting hematologic DLT criteria, for which the observation window will extend to 42 days from treatment initiation. DLTs are defined in the protocol.
From Cycle 1 Day 1 to end of Cycle 1 Day 28/Cycle 1 Day 42 (total time 28-42 days)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Rate of Complete Remission (CR) (All Patients)
Time Frame: Through completion of treatment (estimated total time 22 months)

European LeukemiaNet (ELN) 2022 Response Criteria assesses AML and the International Working Group (IWG) 2023 Response Criteria assesses Higher-Risk MDS (HR-MDS).

CR AML: Bone marrow blasts < 5%; absence of circulating blasts; absence of extramedullary disease; ANC ≥ 1.0 x 10^9/L (1,000/μL); platelet count ≥ 100 x 10^9/L (100,000/μL).

CR HR-MDS: Bone marrow: < 5% myeloblasts; dysplasia may persist and peripheral blood: hemoglobin ≥ 10 g/dL, platelets ≥ 100 x 10^9/L, neutrophils ≥ 1.0 x 10^9/L, blasts 0%
Through completion of treatment (estimated total time 22 months)
Rate of Complete Remission with partial hematologic recovery (CRh) (All Patients)
Time Frame: Through completion of treatment (estimated total time 22 months)

European LeukemiaNet (ELN) 2022 Response Criteria assesses AML and the International Working Group (IWG) 2023 Response Criteria assesses Higher-Risk MDS (HR-MDS).

CRh is defined according to the ELN 2022 Response Criteria: ANC ≥ 0.5 x 10^9/L (500 μL) and platelet count ≥ 50 x 10^9/L (50,000/μL), otherwise all other CR criteria met

CRh is defined according to the IWG 2023 Response Criteria: Bone marrow: < 5% myeloblasts; dysplasia may persist; Peripheral blood: not meeting criteria for CR or CRL; no hemoglobin threshold required, platelets ≥ 50 x 10^9/L, neutrophils ≥ 0.5 x 10^9/L, blasts 0%
Through completion of treatment (estimated total time 22 months)
Rate of Partial Remission (PR) (All Patients)
Time Frame: Through completion of treatment (estimated total time 22 months)

European LeukemiaNet (ELN) 2022 Response Criteria assesses AML and the International Working Group (IWG) 2023 Response Criteria assesses Higher-Risk MDS (HR-MDS).

PR is defined according to the ELN 2022 Response Criteria: 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%

PR is defined according to the IWG 2023 Response Criteria: All CR criteria except: Bone marrow blasts decreased by ≥ 50% over pretreatment but still ≥ 5% and Cellularity and morphology not relevant
Through completion of treatment (estimated total time 22 months)
Duration of Response (DoR) (All Patients)
Time Frame: From first documented response until disease progression or death (up to 48 months)

DoR will be measured from the first documented response until earliest date of disease progression or death from any cause, as defined in the protocol or disease-specific criteria (ELN 2022 for AML and IWG 2023 for HR-MDS). DOR will be summarized among responders only. Individuals who do not exhibit any disease progression or death during the follow-up period are censored at the last date of the response assessment.
From first documented response until disease progression or death (up to 48 months)
Event-free Survival (EFS) (All Patients)
Time Frame: From Cycle 1 Day 1 to treatment failure, relapse after response, progression, or death (up to 48 months)

EFS will be measured from Cycle 1 Day 1 to treatment failure, relapse after response, progression, or death from any cause, consistent with protocol definitions and disease-specific response criteria (ELN 2022 for AML and IWG 2023 for HR-MDS). EFS will be summarized in the efficacy-evaluable population. Participants without an event will be censored at the last disease assessment date at which they were known to be event-free.
From Cycle 1 Day 1 to treatment failure, relapse after response, progression, or death (up to 48 months)
Overall Survival (OS) (All Patients)
Time Frame: From Cycle 1 Day 1 to death from any cause (up to 48 months)

OS will be measured from Cycle 1 Day 1 to death from any cause. Participants alive at last follow-up will be censored on the date last known alive. OS will be summarized in all treated participants.
From Cycle 1 Day 1 to death from any cause (up to 48 months)
Rate of Complete Remission with incomplete count recovery (CRi) (AML Patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

Response is assessed according to the ELN 2022 Response Criteria for AML.

CRi is defined as all CR criteria except for residual neutropenia < 1.0 x 10^9/L (500/μL) or thrombocytopenia < 100 x 10^9/L (50,000/μL); CRi should only include patients not meeting the definition of CRh.
Through completion of treatment (estimated total time 22 months)
Rate of morphologic leukemia-free state (MLFS) (AML Patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

Response is assessed according to the ELN 2022 Response Criteria for AML.

MLFS is defined as bone marrow blasts < 5%; absence of circulating blasts; absence of extramedullary disease; no hematologic recovery required.
Through completion of treatment (estimated total time 22 months)
Rate of composite Complete Remission (cCR) (AML Patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

Response is assessed according to the ELN 2022 Response Criteria for AML.

cCR is defined as complete remission (CR) + complete remission with partial hematologic recovery (CRh) + complete remission with incomplete hematologic recovery (CRi)
Through completion of treatment (estimated total time 22 months)
Overall Response Rate (ORR) (AML Patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

Response is assessed according to the ELN 2022 Response Criteria for AML. ORR is defined as complete remission (CR) + complete remission with partial hematologic recovery (CRh) + complete remission with incomplete hematologic recovery (CRi) + partial remission (PR) + morphologic leukemia-free state (MLFS)
Through completion of treatment (estimated total time 22 months)
Rate of Complete Remission (CR) equivalent (HR-MDS patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

CR is assessed according to the IWG 2023 Response Criteria for HR-MDS.

CR: Bone marrow: < 5% myeloblasts; dysplasia may persist; Peripheral blood: hemoglobin ≥ 10 g/dL, platelets ≥ 100 x 10^9/L, neutrophils ≥ 1.0 x 10^9/L, blasts 0%
Through completion of treatment (estimated total time 22 months)
Rate of Complete Remission with limited count recovery (CRL) (HR-MDS patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

CRL is assessed according to the IWG 2023 Response Criteria for HR-MDS.

CRL (CRuni and CRbi): Bone marrow: < 5% myeloblasts; dysplasia may persist; Peripheral blood: blasts 0%; Complete remission unilineage (CRuni): peripheral blood not meeting CR but only one of the following: hemoglobin ≥ 10 g/dL, platelets ≥ 100 x 10^9/L, neutrophils ≥ 1.0 x 10^9/L Complete remission bilineage (CRbi): peripheral blood not meeting CR but only two of the following: hemoglobin ≥ 10 g/dL, platelets ≥ 100 x 10^9/L, neutrophils ≥ 1.0 x 10^9/L
Through completion of treatment (estimated total time 22 months)
Rate of Hematological Improvement (HI) (HR-MDS patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

HI is assessed according to the IWG 2018 Response Criteria for HR-MDS.

HI: Not meeting criteria for complete remission (CR) (or CR equivalent) or complete remission unilineage (CRuni) or complete remission with limited count recovery (CRL); HIerythroid (HI-E); HIplatelets (HI-P); HIneutrophils (HI-N).
Through completion of treatment (estimated total time 22 months)
Rate of composite Complete Remission (cCR) (HR-MDS patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

cCR is assessed according to the IWG 2023 Response Criteria for HR-MDS.

cCR is defined as complete remission (CR) + complete remission (CR) equivalent + complete remission with limited count recover (CRL) + complete remission with partial hematologic recovery (CRh)
Through completion of treatment (estimated total time 22 months)
Overall Response Rate (ORR) (HR-MDS patients only)
Time Frame: Through completion of treatment (estimated total time 22 months)

Response is assessed via the IWG 2023 Response Criteria for HR-MDS. ORR is defined as complete remission (CR) + complete remission (CR) equivalent + complete remission with limited count recover (CRL) + complete remission with partial hematologic recovery (CRh) + partial remission (PR) + hematological improvement (HI)
Through completion of treatment (estimated total time 22 months)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Washington University School of Medicine

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Cancer Institute (NCI)
Aprea Therapeutics
The V Foundation for Cancer Research

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Geoffrey L Uy, MD, Washington University School of Medicine

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 30, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 31, 2029

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 30, 2031

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 20, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 20, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 1, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 6, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 3, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 202609141
  • P50CA171963 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

De-identified individual participant data underlying the results reported in publications arising from this study will be made available to qualified investigators.

IPD Sharing Time Frame

Data will become available beginning 6 months after publication of the primary study results and will remain available for at least 5 years thereafter.

IPD Sharing Access Criteria

De-identified individual participant data will be made available upon reasonable request to the Principal Investigator following publication of the primary study results. Requests must include a scientifically sound proposal and may require execution of a data use agreement and approval by Washington University and other applicable oversight bodies.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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