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Clinical Trials List

Protocol NumberTAK-438_304
NCT Number(ClinicalTrials.gov Identfier)NCT03050359

2017-03-01 - 2019-09-30

Phase III

Terminated5

ICD-10K26.4

Chronic or unspecified duodenal ulcer with hemorrhage

ICD-10K26

Duodenal ulcer

A Randomized Double-Blind, Double-Dummy, Phase 3 Study to Evaluate the Efficacy and Safety of Oral TAK-438 20 mg Compared to Lansoprazole 30 mg Once- or Twice-Daily in the Treatment of Endoscopically confirmed Duodenal Ulcer Subjects with or without Helicobacter pylori infection

  • Trial Applicant

    IQVIA RDS Taiwan Ltd.

  • Sponsor

    Takeda Development Center Asia Pte. Ltd.

  • Trial scale

    Multi-Regional Multi-Center

  • Update

    2025/08/20

Investigators and Locations

Principal Investigator 謝財源 Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Principal Investigator Jiing-Chyuan Luo Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Principal Investigator Ken-Sheng Cheng Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Principal Investigator Ken-Sheng Cheng 未分科
China Medical University Hospital-Taipei

Taiwan National PI

鄭庚申

Co-Principal Investigator

Audit

None

Principal Investigator Cheng-Tang Chiu Division of General Internal Medicine
Linkou Chang Gung Medical Foundation

Taiwan National PI

邱正堂

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

1 Terminated

Audit

None

Principal Investigator Ming-Shiang Wu Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Terminated

Audit

None

Condition/Disease

Duodenal Ulcer

Objectives

Primary Objective: To demonstrate the noninferior efficacy of TAK-438 versus lansoprazole in the treatment of subjects with duodenal ulcer. Secondary Objectives: To demonstrate the noninferiority of H pylori eradication with TAK-438 versus lansoprazole. To compare the safety of TAK-438 versus lansoprazole in subjects with duodenal ulcer.

Test Drug

TAK-438

Active Ingredient

vonoprazan

Dosage Form

Tablets

Dosage

20

Endpoints

1. Primary Endpoint:
 The primary endpoint for this study is the percentage of subjects with endoscopically confirmed healing* of
duodenal ulcer(s) at Week 4 or 6*.
*Rate of endoscopic healing: defined as the proportion of subjects in whom the disappearance of all white
coats associated with duodenal ulcers has been endoscopically confirmed.
2. Secondary Endpoints:
 Percentage of HP+ subjects with successful H pylori eradication after 4 or 6 weeks of treatment, as
determined by 13C UBT at F-2.
 Percentage of subjects with endoscopic healing of duodenal ulcer at Week 4.
 Percentage of subjects with posttreatment resolution of gastrointestinal symptoms associated with duodenal
ulcer (epigastric pain [postprandial, fasting, nocturnal], abdominal bloating, nausea/vomiting, heartburn,
lack of appetite) at Weeks 2 through 6.

Inclution Criteria

Main Criteria for Inclusion:
Subjects with endoscopic evidence of one or more active duodenal ulcer(s) (ie, mucosal defects with white
coating [including cases associated with blood coagula]) measuring 5 mm or larger in longest diameter within 14
days prior to randomization, who have provided (or when applicable their legally acceptable representative has
provided) informed consent, who are capable of understanding and complying with the study procedures and
who agree to use appropriate contraception.

Exclusion Criteria

Main Criteria for Exclusion:
Subjects who have hypersensitivity to TAK-438, or related compounds or to proton pump inhibitors (PPIs),
clarithromycin, amoxicillin, bismuth or lansoprazole; or who have a significant history of CNS, cardiovascular,
pulmonary, hepatic, renal, metabolic, gastrointestinal, urological, endocrine or hematological disease; or subjects
with a liver function test > upper limit of normal; or who have any significant results from physical
examinations, or clinical laboratory results as deemed by the investigator. Subjects that have received HP
eradication therapy 30 days prior to visit 2 or endoscopic therapy within 30 days prior to visit 1 or also have
active gastric ulcer(s) are also excluded.

The Estimated Number of Participants

  • Taiwan

    75 participants

  • Global

    530 participants