A Phase I Study of TS-172 in Healthy Adult Subjects (Single and Multiple Doses)

February 26, 2025 updated by: Taisho Pharmaceutical Co., Ltd.

A Phase 1, Single-Center, Randomized, Double-blind, Placebo-Controlled Study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of Single Ascending and Multiple Dose of TS-172 in Healthy Adult Subjects

A Phase 1, Single-Center, Randomized, Double-blind, Placebo-Controlled Study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of Single Ascending and Multiple Dose of TS-172 in Healthy Adult Subjects

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.
41

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 Locations

  • Japan
      • Toshima-ku, Japan
        • Taisho Pharmaceutical Co., Ltd selected 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

16 years to 35 years (Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. Japanese healthy males aged 20 years or older but less than 40 years at the time of informed consent
  2. Those with a BMI of 18.5 or more and less than 25.0 at screening test
  3. Those who are able to receive the explanation before participating in the study, understand the content of the study, and provide written informed consent by the subjects themselves.

Exclusion Criteria:

  1. Subjects who have any disease and are not considered healthy subjects based on the medical judgment of the principal investigator or sub-investigator.

  2. Those who correspond to any of the following about bowel movements;

    • Repeated diarrhea (Bristol Stool Form Score [BSFS] score of 6 or higher) on a daily basis
    • Repeated constipation (no defecation for 2 days or more in a week) on a daily basis

  3. Those who correspond to any of the following about bowel movements in the 7 days before administration;

    • Diarrhea on 2 or more days in 7 days
    • 2 or more days without a bowel movement in 7 days
  4. Those who have a history of gastrointestinal ulceration

  5. Those who correspond to any of the following about infection;

    • Positive for SARS-CoV-2 in the nucleic acid amplification test performed at the time of admission
    • Suspected of having COVID-19

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: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

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 (single dose) : Step 1 to 4: TS-172 10 mg, 30 mg, 90 mg, 270 mg
Single dose of TS-172 or placebo before breakfast
Drug: TS-172
  • Single doses of TS-172 10 mg, 30 mg, 90 mg, 270 mg before breakfast in each period (only 30 mg administered before breakfast and fasting)
  • Multiple dose of TS-172 90 mg before breakfast and dinner
Drug: Placebo
  • Single doses of TS-172 placebo before breakfast in each period (only placebo administered before breakfast and fasting in step 2)
  • Multiple dose of TS-172 placebo before breakfast and dinner
Experimental: Part B (multiple dose) : Step 5: TS-172 90 mg
Multiple dose of TS-172 or placebo before breakfast and dinner
Drug: TS-172
  • Single doses of TS-172 10 mg, 30 mg, 90 mg, 270 mg before breakfast in each period (only 30 mg administered before breakfast and fasting)
  • Multiple dose of TS-172 90 mg before breakfast and dinner
Drug: Placebo
  • Single doses of TS-172 placebo before breakfast in each period (only placebo administered before breakfast and fasting in step 2)
  • Multiple dose of TS-172 placebo before breakfast and dinner

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
Incidence of treatment-emergent adverse events (TEAEs) and serious AEs (SAEs)
Time Frame: Part A (Step 1): Day 1 up to Day 8, Part A (Step 2, 3, 4): Day 1 up to Day 4, Part B: Day 1 up to Day 11
Part A (Step 1): Day 1 up to Day 8, Part A (Step 2, 3, 4): Day 1 up to Day 4, Part B: Day 1 up to Day 11

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
Concentration of unchanged form in plasma, urine and stool
Time Frame: Part A: Day 1 up to Day 4, Part B: Day 1 up to Day 11
Part A: Day 1 up to Day 4, Part B: Day 1 up to Day 11
Area under the plasma concentration-time curve (AUC) of unchanged form
Time Frame: Part A: Day 1 up to Day 4, Part B: Day 1 up to Day 11
Part A: Day 1 up to Day 4, Part B: Day 1 up to Day 11
Mean daily urinaly excretion of sodium and phosphorus
Time Frame: Part A (Step 1): Day 1 up to Day 8, Part A (Step 2, 3, 4): Day 1 up to Day 4, Part B: Day 1 up to Day 11
Part A (Step 1): Day 1 up to Day 8, Part A (Step 2, 3, 4): Day 1 up to Day 4, Part B: Day 1 up to Day 11
Mean daily Bristol Stool Form Scale (BSFS)
Time Frame: Part A (Step 1): Day 1 up to Day 8, Part A (Step 2, 3, 4): Day 1 up to Day 4, Part B: Day 1 up to Day 11
BSFS is a scale between 1-7, where 1 correlates with the firmest stool and 7 correlates with entirely liquid stool
Part A (Step 1): Day 1 up to Day 8, Part A (Step 2, 3, 4): Day 1 up to Day 4, Part B: Day 1 up to Day 11

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.
Taisho Pharmaceutical Co., Ltd.

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: Taisho Director, Taisho Pharmaceutical Co., Ltd.

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.
August 16, 2021

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 26, 2022

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.
January 26, 2022

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).
July 5, 2021

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.
July 27, 2021

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.
July 28, 2021

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.
March 25, 2025

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.
February 26, 2025

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, 2022

More Information

Terms related to this study

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.
  • TS172-101

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

product manufactured in and exported from the U.S.

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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