Efficacy and Safety Study to Evaluate MT-6548 in Non-dialysis Subjects With Anemia Associated With Chronic Kidney Disease in Japan

March 16, 2026 updated by: Tanabe Pharma Corporation

A Phase III, Open-label, Confirmatory Study of MT-6548 Compared to Darbepoetin Alfa in Non-dialysis Subjects With Anemia Associated With Chronic Kidney Disease in Japan

For Non-dialysis subjects with anemia associated with chronic kidney disease, demonstrate non-inferiority of MT-6548 compared to darbepoetin alfa using Hb value and evaluate long-term safety of MT-6548.

For subjects not currently receiving ESAs, evaluate Hb correction and maintenance effect of MT-6548 and for subjects currently receiving ESAs, evaluate Hb conversion and maintenance effect of MT-6548

Study Overview

Status

Status

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

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 (Actual)

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.
304

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 3

Contacts and Locations

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

Study Locations

  • Japan
      • Aichi, Japan
        • Research Site
      • Chiba, Japan
        • Research Site
      • Fukui, Japan
        • Research Site
      • Fukuoka, Japan
        • Research Site
      • Fukushima, Japan
        • Research Site
      • Gunma, Japan
        • Research Site
      • Hiroshima, Japan
        • Research Site
      • Hokkaido, Japan
        • Research Site
      • Hyōgo, Japan
        • Research Site
      • Ibaraki, Japan
        • Research Site
      • Kagoshima, Japan
        • Research Site
      • Kanagawa, Japan
        • Research Site
      • Kochi, Japan
        • Research Site
      • Kumamoto, Japan
        • Research Site
      • Kyoto, Japan
        • Research Site
      • Miyagi, Japan
        • Research Site
      • Nagano, Japan
        • Research Site
      • Nagasaki, Japan
        • Research Site
      • Nara, Japan
        • Research Site
      • Niigata, Japan
        • Research Site
      • Okayama, Japan
        • Research Site
      • Okinawa, Japan
        • Research Site
      • Osaka, Japan
        • Research Site
      • Saga, Japan
        • Research Site
      • Saitama, Japan
        • Research Site
      • Shiga, Japan
        • Research Site
      • Shizuoka, Japan
        • Research Site
      • Tokyo, Japan
        • Research Site
      • Toyama, Japan
        • Research Site
      • Yamanashi, Japan
        • Research Site
      • Ōita, Japan
        • Research Site

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

20 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Diagnosis of CKD
  • eGFR < 60 mL/min/1.73m^2 during the screening period
  • Not receiving dialysis for 8 weeks prior to the screening period, and not expected to start dialysis during the treatment period
  • Correction group: Not being treated with ESAs for the recent 8 weeks prior to the screening period
  • Conversion group: Being treated with ESAs for the recent 8 weeks prior to the screening period
  • Mean of the two screening Hb levels closest in time to the baseline visit. Correction group: ≥8.0 g/dL and < 11.0 g/dL Conversion group: ≥9.0 g/dL and ≤12.5 g/dL
  • Fluctuation between the two Hb levels closest in time to the baseline visit during the screening period less than 1.5 g/dL
  • Serum ferritin ≥ 100 ng/mL, or TSAT ≥20% during the screening period
  • Folate and vitamin B12 ≥ lower limit of normal during the screening period

Exclusion Criteria:

  • Anemia due to a main cause other than CKD: sickle cell disease, myelodysplastic syndrome, bone marrow fibrosis, hematologic malignancy, hemolytic anemia, thalassemia, or pure red cell aplasia
  • Active bleeding or recent blood loss within 8 weeks prior to the screening period
  • RBC transfusion within 8 weeks prior to the screening period
  • Received testosterone enanthate or mepitiostane within 8 weeks prior to the screening period
  • AST, ALT, or total bilirubin >2.5 x upper limit of normal during the screening period
  • Uncontrolled hypertension (diastolic blood pressure >110 mm Hg or systolic blood pressure >180 mm Hg) during the screening period and Day 1

  • Ophthalmic examinations during the screening period correspond to either of the following criteria;

    • No available fundal findings
    • Findings indicating the presence of active fundal disease
  • Severe heart failure (New York Heart Association Class IV)
  • Cerebrovascular disorder or acute coronary syndrome (hospitalization due to unstable angina or myocardial infarction), requiring hospitalization due to urgent percutaneous intervention for coronary or heart failure within 12 weeks prior to the screening period
  • Current or history of malignancy. History of malignancy with no recurrence for the recent 5 years is not an exclusion criterion
  • New onset or recurrent event of deep vein thrombosis or pulmonary embolism within 12 weeks prior to the screening period
  • Current or history of hemosiderosis or hemochromatosis
  • History of prior organ transplantation or scheduled organ transplant, or prior transplantation of hematopoietic stem cell or bone marrow
  • Males and females of childbearing potential who are unwilling to use an acceptable method of contraception during the designated period (Males: during the study and 90 days after the last dose, females: during study and 30 days after the last dose)
  • Females who are pregnant or breast feeding, or are predicted to be pregnant

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: Randomized
  • Interventional Model: Parallel 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.
Active Comparator: Darbepoetin alfa
Drug: Darbepoetin alfa
Subcutaneous
Experimental: MT-6548
Drug: MT-6548
Oral tablet
Other Names:
  • AKB-6548
  • vadadustat

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
Time Frame
Mean Hb Level of Week 20 and Week 24
Time Frame: Up to Week 24
Up to Week 24

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
Time Frame
Rate of Increase in Hb Level in Correction Group Only
Time Frame: Up to Week 6
Up to Week 6
Mean Hb Level of Week 48 and Week 52
Time Frame: Up to Week 52
Up to Week 52
Hb Level at Each Assessment Time Point
Time Frame: Up to Week 52
Up to Week 52
Percentage of Subjects With Hb Level at Each Assessment Time Point Within the Target Range During the Treatment Period
Time Frame: Up to Week 52
Up to Week 52
Time to Reach the Target Hb Range in Correction Group Only
Time Frame: Up to Week 52
Up to Week 52

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.
Tanabe Pharma Corporation

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 Director: General Manager, Tanabe Pharma Corporation

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.
October 30, 2017

Primary Completion (Actual)

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.
January 8, 2019

Study Completion (Actual)

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 9, 2019

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).
October 30, 2017

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.
October 30, 2017

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.
November 1, 2017

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 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.
March 16, 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.
March 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.
  • MT-6548-J01

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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Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

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