Phase 4 Study of Sto M Tab. in Acute or Chronic Gastritis

June 1, 2026 updated by: Mather's Pharm. Co., Ltd.

A Randomized, Double-blinded, Active Controlled, Non-Inferiority, Multicenter, Phase IV Clinical Trial to Evaluate the Efficacy and Safety of Sto M Tab. in Patients With Acute or Chronic Gastritis

This Phase 4, multicenter, randomized, double-blind, active-controlled, non-inferiority study aims to evaluate the non-inferiority of Stoem Tab. compared to Stillen Tab. (Dong-A ST Co., Ltd.) in patients with acute or chronic gastritis. Participants will receive either Stoem Tab. or Stillen Tab. for 2 weeks. The primary outcome is the effective rate of gastric mucosal erosion at Week 2, assessed by upper gastrointestinal endoscopy and evaluated by an independent reviewer, defined as the proportion of participants achieving at least a 50% improvement in erosion score compared to baseline.

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.

Detailed Description

This Phase 4 clinical trial will assess the efficacy and safety of Stoem Tab. compared to Stillen Tab. in adults with acute or chronic gastritis. Participants will be randomized in a double-blind, parallel, active-controlled design to receive either Stoem Tab. or Stillen Tab. for 2 weeks. The primary endpoint is the effective rate of gastric mucosal erosion at Week 2, assessed by upper gastrointestinal endoscopy and evaluated by an independent reviewer. A responder is defined as a participant whose erosion score at Week 2 has improved by at least 50% compared to baseline (i.e., a decrease from grade 4 to grade 2 or 1, or from grade 3 or 2 to grade 1). The effective rate is calculated as the proportion of responders among the evaluable participants. Secondary endpoints include additional efficacy and safety evaluations. The study aims to demonstrate the non-inferiority of Stoem Tab. to Stillen Tab. All participants will be monitored for efficacy, safety, and medication compliance, and standard eligibility criteria will be applied.

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.
470

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 4

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. Male or female adults aged 19 to 75 years at the time of screening.
  2. Participants diagnosed with acute or chronic gastritis by upper gastrointestinal endoscopy performed within 7 days prior to randomization (Visit 2), with at least one gastric erosion confirmed. Erosions of the esophagus and duodenum are excluded.
  3. Female participants of childbearing potential or male participants who agree to maintain sexual abstinence or use appropriate contraceptive methods during the study period and for 2 weeks after the last administration of the investigational product. Periodic abstinence, such as calendar, ovulation, symptothermal, or post-ovulation methods, is not considered an acceptable contraceptive method.
  4. Participants who voluntarily provide written informed consent to participate in this clinical trial.

Exclusion Criteria:

  1. Participants with any of the following lesions confirmed or accompanied by upper gastrointestinal endoscopy at screening (Visit 1): active or healing peptic ulcer; reflux esophagitis; Barrett's esophagus greater than 3 cm; gastroesophageal varices; esophageal stricture; or other clinically relevant lesions. Participants with ulcer scars may be enrolled.
  2. Participants who have a history of gastric acid secretion-inhibiting surgery or gastric or esophageal surgery at screening (Visit 1).
  3. Participants who have been diagnosed with or have a history of Zollinger-Ellison syndrome at screening (Visit 1).
  4. Participants with inflammatory bowel disease, such as Crohn's disease, ulcerative colitis, or intestinal Behcet's disease; primary esophageal motility disorder; or pancreatitis at screening (Visit 1).
  5. Participants with a history of malignancy within 5 years prior to screening (Visit 1). However, participants who have been completely treated and have had no recurrence for at least 5 years may be enrolled at the investigator's discretion. Participants with gastrointestinal malignancy are excluded regardless of the time since diagnosis. Participants with basal cell carcinoma, squamous cell carcinoma of the skin, thyroid cancer, or carcinoma in situ of other sites may be enrolled at the investigator's discretion if they have been completely treated and have had no recurrence for at least 3 years.
  6. Participants with current or prior thrombotic disease at screening (Visit 1), such as cerebral thrombosis, myocardial infarction, thrombophlebitis, or venous thrombosis.
  7. Participants diagnosed with disseminated intravascular coagulation at screening (Visit 1).
  8. Participants with concomitant hepatic, renal, cardiac, pulmonary, hematologic, or other diseases that, in the investigator's judgment, may affect the efficacy or safety evaluations.
  9. Participants with current or prior lipid metabolism disorders at screening (Visit 1), such as hyperlipidemia or diabetic hyperlipidemia, or participants who require cautious administration of lipid nutritional products. However, participants whose condition is adequately controlled with medication may be enrolled at the investigator's discretion.
  10. Participants with hereditary problems such as galactose intolerance, Lapp lactase deficiency, or glucose-galactose malabsorption.
  11. Participants with a history of hypersensitivity to soybean, peanut, or soybean oil.
  12. Participants with a history of hypersensitivity to any component of the investigational products, such as tartrazine.
  13. Participants with clinically significant psychiatric disease at screening (Visit 1).
  14. Participants who meet any other exclusion criteria related to prior or concomitant medications specified in the protocol.

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: Quadruple

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: Sto M Tab. Group
Drug: Sto M Tab.
Sto M Tab., oral, three times daiy, 2 weeks
Active Comparator: Stillen Tab. Group
Drug: Stillen Tab.
Stillen Tab., oral, three times daily, 2 weeks

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
Effective Rate of Gastric Mucosal Erosion Assessed by an Independent Reviewer
Time Frame: Baseline and Week 2
Proportion of participants whose erosion score improved by at least 50% from baseline to Week 2, as assessed by upper gastrointestinal endoscopy and evaluated by an independent reviewer.
Baseline and Week 2

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
Effective Rate of Gastric Mucosal Erosion Assessed by the Investigator
Time Frame: Baseline and Week 2
Proportion of participants whose erosion score improved by at least 50% from baseline to Week 2, as assessed by upper gastrointestinal endoscopy.
Baseline and Week 2
Complete Cure Rate of Gastric Mucosal Erosion Assessed by the Investigator
Time Frame: Week 2
Proportion of participants with complete resolution of gastric mucosal erosion at Week 2, as assessed by upper gastrointestinal endoscopy.
Week 2
Complete Cure Rate of Gastric Mucosal Edema Assessed by the Investigator
Time Frame: Week 2
Proportion of participants with complete resolution of gastric mucosal edema at Week 2, as assessed by upper gastrointestinal endoscopy.
Week 2
Effective Rate of Gastric Mucosal Redness Assessed by the Investigator
Time Frame: Baseline and Week 2
Proportion of participants whose redness score improved by at least 50% from baseline to Week 2, as assessed by upper gastrointestinal endoscopy.
Baseline and Week 2
Effective Rate of Gastric Mucosal Hemorrhage Assessed by the Investigator
Time Frame: Baseline and Week 2
Proportion of participants whose hemorrhage score improved by at least 50% from baseline to Week 2, as assessed by upper gastrointestinal endoscopy.
Baseline and Week 2
Improvement Rate of Subjective Symptom Score Assessed by the Investigator
Time Frame: Baseline and Week 2
Proportion of participants whose total subjective symptom score improved by at least 50% from baseline to Week 2, as assessed by a self-reported questionnaire.
Baseline and Week 2

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.
Mather's Pharm. 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 (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.
June 1, 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.
February 1, 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.
February 1, 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).
June 1, 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.
June 1, 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 5, 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.
June 5, 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.
June 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.
May 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.
  • MTS-STO-401

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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