Ivosidenib as Maintenance Therapy in Transplant-Ineligible IDH1-mutated AML and HR-MDS

May 19, 2026 updated by: Zhang sujiang, Ruijin Hospital

A Phase II, Multicenter, Open-label Clinical Study of Ivosidenib as Maintenance Therapy in Patients With IDH1-mutated AML and High-risk MDS Who Are Ineligible for Transplantation (IVORY-MAST)

This study will explore the efficacy and safety of ivosidenib as maintenance therapy in patients with IDH1-mutated AML and high-risk MDS who are ineligible for transplantation, along with accompanying molecular biomarker research. Patients who meet the eligibility criteria will receive ivosidenib treatment until disease progression or unacceptable toxicity. This study will provide an effective maintenance treatment option for transplant-ineligible patients with IDH1-mutated AML and high-risk MDS.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
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.
20

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 2

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

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China, 200025
        • Recruiting
        • Ruijin Hospital
        • 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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age ≥18 years, male or female.
  • Molecularly confirmed diagnosis of IDH1-mutated acute myeloid leukemia (AML) or high-risk myelodysplastic syndrome (MDS).
  • Achieved complete remission (CR) or partial remission (PR) after induction therapy.
  • Ineligible for allogeneic hematopoietic stem cell transplantation (allo-HSCT).
  • Eastern Cooperative Oncology Group (ECOG) performance status score ≤2.
  • Signed informed consent.
  • For women of childbearing potential: must have practiced contraception for at least one month prior to screening and commit to using contraception throughout the study period and for the required period after study completion.
  • Female participants of childbearing potential and male participants with female partners of childbearing potential must agree to use highly effective methods of contraception from the time of signing informed consent until 180 days after the last dose of the study drug.

Exclusion Criteria:

Participants with any of the following criteria will be excluded from the study:

  • Prior treatment with an IDH1 inhibitor.
  • Diagnosis of M3 subtype (acute promyelocytic leukemia, APL).
  • Presence of severe hepatic or renal dysfunction.
  • Active infection or other serious comorbidities.
  • Major surgery within 28 days prior to the first dose, or planned surgery during the study period.
  • Diagnosis of any other malignancy within 5 years prior to the first dose, with the exception of early-stage malignancies that have been cured by radical treatment, such as carcinoma in situ of the lung, non-melanoma skin cancer, basal cell or squamous cell carcinoma of the skin, or cervical carcinoma in situ. Whether to exclude such patients will be determined by the investigator's assessment.
  • Severe cardiovascular disease, such as New York Heart Association (NYHA) class 2 heart failure, unstable angina, unstable arrhythmia, myocardial infarction or cerebrovascular accident within 3 months prior to randomization.
  • Human immunodeficiency virus (HIV) infection or known acquired immunodeficiency syndrome (AIDS); active hepatitis B (HBV DNA≥1000 IU/ml); hepatitis C (positive for anti-HCV antibodies and HCV-RNA above the lower limit of detection of the assay); or co-infection with hepatitis B and hepatitis C.
  • Known history of psychoactive substance abuse or drug addiction.
  • Presence of any other serious physical or mental illness, or abnormal laboratory findings that may increase the risk of study participation, interfere with the study results, or make the patient unsuitable for study participation in the opinion of the investigator.
  • Inability to swallow, intestinal obstruction, or other factors affecting drug administration or absorption.
  • Previous concomitant treatment with both drugs of the combination therapy targeting the same pathway as in this study.
  • History of allergy to the study drug or any of its excipients.

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: N/A
  • Interventional Model: Single Group 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: Ivosidenib
Drug: Ivosidenib
Ivosidenib: 500 mg, PO, QD, 28-day cycles

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
Disease free survival (DFS)
Time Frame: 12 months
The time from surgery to the onset of tumor recurrence or death from any cause.
12 months

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
Complete response (CR)
Time Frame: 4 months
The proportion of patients achieved complete response (CR).
4 months
Overall survival (OS)
Time Frame: 36 months
The time from randomization to the time of death from any cause.
36 months
Adverse events
Time Frame: 12 months
The severity of adverse events will be evaluated according to the NCI CTCAE 5.0 standard.
12 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.
Ruijin Hospital

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.
May 22, 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.
May 30, 2027

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.
December 30, 2027

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 19, 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 19, 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.
May 26, 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.
May 26, 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.
May 19, 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.
April 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.
  • 2026 (38)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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