Last updated on August 2019

Comparison of TAK-438 (Vonoprazan) to Lansoprazole in the Treatment of Gastric Ulcer Participants With or Without Helicobacter Pylori Infection


Brief description of study

The purpose of this study is to demonstrate the non-inferior efficacy of TAK-438 versus lansoprazole in the treatment of participants with gastric ulcer.

Detailed Study Description

The drug being tested in this study is called TAK-438. TAK-438 is being tested to treat people who have stomach ulcers and also may or may not have Helicobacter pylori (HP) infection. This study will look at stomach ulcer healing and also the elimination of HP in people who take TAK-438 versus lansoprazole.

The study will enroll approximately 830 patients.

Participants will be randomly assigned (by chance, like flipping a coin) to one of the two treatment groupswhich will remain undisclosed to the participants and study doctor during the study (unless there is an urgent medical need):

  • TAK-438 20 mg
  • Lansoprazole 30 mg

Study treatment will depend upon the Helicobacter pylori infection status of the participant, and include bismuth-containing quadruple therapy for the first 2 weeks in H pylori infected (HP+) participants. HP+ participants will be asked to take a TAK- 438 tablet or a lansoprazole capsule twice daily in conjunction with bismuth-containing quadruple therapy for 2 weeks, followed up by a TAK-438 tablet or a lansoprazole capsule once daily for up to 6 weeks. HP- participants will be asked to take a TAK-438 tablet or a lansoprazole capsule once daily for up to 8 weeks.

This multi-center trial will be conducted in China, Korea, Taiwan and Philippines. The overall time to participate in this study is up to 16 weeks. Participants will make multiple visits plus final visit at 2 weeks or 4 weeks after last dose of study drug for a follow-up assessment.

Clinical Study Identifier: NCT03050307

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De La Salle University Medical Center

Dasmarinas City, Cavite, Philippines
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