A Study of Treatment-free Remission in Chronic Phase Chronic Myeloid Leukemia (AsterA)

April 1, 2026 updated by: Korean Society of Hematology

A Study of Treatment-free Remission in Chronic Phase Chronic Myeloid Leukemia in Combination With Asciminib and Tyrosine Kinase Inhibitors

To evaluate the efficacy of asciminib adding on tyrosine-kinase inhibitors (TKI) to achieve treatment-free remission (TFR) in chronic myeloid leukemia (CML) patients in chronic phase who failed prior cessation study of TKI

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.

Detailed Description

We expect that patients who lost MR3.0 after stopping TKIs, thus failed to maintain treatment-free remission can achieve second sustainable MR4.5 by sustainable MR4.5 for more than 3 years once regained and prolong MRFS by adding asciminib to TKIs. Patients will be restarted on TKIs when they fail sustaining MR3.0 after cessation because restarting TKIs when loss of MR3.0 is reasonable in this situation.

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.
69

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 Contact Backup

Study Locations

  • South Korea
    • Incheon
      • Incheon, Incheon, South Korea, 21565
        • Recruiting
        • Gachon University Gil Medical Center
        • 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:

  1. 19 year or older
  2. CP-CML patients who are taking current TKIs (imatinib, nilotinib or dasatinib) for 5 years or more
  3. Patients who have failed maintaining MR3.0 after 1 or more cessation trial of TKIs.
  4. Patients who regained MR3.0 or deeper molecular response by TKIs retrial after TKI cessation failure at the time of screening
  5. Taking TKIs over 12 weeks for the retrial of TKIs after TKI cessation failure
  6. Patients who agree with stopping asciminib and TKIs after maintaining 23 year-duration of MR4.5

  7. Adequate end organ function as defined by:

    • Total bilirubin (TBL) < 3 x upper limit of normal (ULN); patients with Gilbert's syndrome may only be included if TBL ≤ 3.0 x ULN or direct bilirubin ≤ 1.5 x ULN
    • Creatinine clearance (ClCr) ≥ 30 mL/min as calculated using Cockcroft-Gault formula
    • Serum lipase ≤ 1.5 x ULN. For serum lipase > ULN - ≤ 1.5 x ULN, value must be considered not clinically significant and not associated with risk factors for acute pancreatitis
  8. Patients who can sign the informed consent of their own free will

Exclusion Criteria:

  1. Patients who experienced grade 3 or higher adverse events with TKIs (imatinib, dasatinib, and nilotinib).
  2. Patients who are receiving any other investigational agents.
  3. Patients who currently have uncontrolled infections
  4. Patients who previously received Chimeric antigen receptor T-cell (CAR-T cell) therapy, allogeneic hematopoietic stem cell transplantation (allo-HSCT) or biologic therapy.
  5. Patients with clinically significant cardiovascular disease or gastrointestinal dysfunction.
  6. Patients who have a history of thromboembolic episodes within 3 months prior to the study enrollment.
  7. Patients with active hepatitis B or C with uncontrolled disease activity.
  8. Patients who have active malignancies requiring treatment other than CML.
  9. Patients with any severe and/or uncontrolled medical conditions or other conditions that could adversely impact on patients' ability to participate in the study.
  10. Patients with psychiatric illness/social situations that would limit compliance with study requirements.
  11. Pregnant women are excluded from this study Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with asciminib and TKIs, breastfeeding should be discontinued if the mother is treated with asciminib and TKIs.

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.
Other: Asciminib arm
Drug: Asciminib
that patients who lost MR3.0 after stopping TKIs, thus failed to maintain treatment-free remission can achieve second sustainable MR4.5 by sustainable MR4.5 for more than 3 years once regained and prolong MRFS by adding asciminib to TKIs. Patients will be restarted on TKIs when they fail sustaining MR3.0 after cessation because restarting TKIs when loss of MR3.0 is reasonable in this situation

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
MR3.0 or less by 1 year
Time Frame: by 1 year
To evaluate the cumulative incidence of sustained MR3.0 or less by 1 year of cessation of TKI and asciminib
by 1 year

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.
Korean Society of Hematology

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.
  • Study Chair: Hawk Kim, Korean Society of Hematology

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.

General Publications

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 (Actual)

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.
March 11, 2024

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.
August 31, 2028

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.
August 31, 2028

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).
April 11, 2024

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.
April 11, 2024

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.
April 16, 2024

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.
April 2, 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.
April 1, 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.
  • KCMLWP-2021-04

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.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings