Comparison of Vonoprazan to Esomeprazole in Participants With Symptomatic GERD Who Responded Partially to a High Dose of Proton Pump Inhibitor (PPI)

2016-04-19 17:53:21 | BioPortfolio


The purpose of this study is to determine the effect of vonoprazan compared to esomeprazole for preventing heartburn symptoms over a 4-week treatment period in participants who have a partial response to treatment with esomeprazole.


The drug being tested in this study is called vonoprazan. Vonoprazan is being tested to treat people who have symptomatic gastroesophageal reflux disease (GERD) with a partial response to treatment with a high dose of esomeprazole. This study will look at improvement in heartburn symptoms in participants who take vonoprazan compared to esomeprazole.

The study will enroll approximately 213 patients. All participants will receive esomeprazole or esomeprazole placebo-matching capsules (this is a capsule that looks like esomeprazole but has no active ingredient) during a 7-week run-in period. Participants will then be randomly assigned (by chance, like flipping a coin) to one of the three treatment groups—which will remain undisclosed to the patient and study doctor during the study (unless there is an urgent medical need):

- Vonoprazan 20 mg

- Vonoprazan 40 mg

- Esomeprazole 40 mg

All participants will be asked to take one capsule at the same time each day throughout the study. All participants will be asked to record heartburn symptoms in a diary every morning upon waking and every evening before going to sleep.

This multi-center trial will be conducted in Europe. The overall time to participate in this study is 12 weeks. Participants will make multiple visits to the clinic, and will be contacted by telephone 1 week after the last dose of study drug for a follow-up assessment.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Gastroesophageal Reflux


Vonoprazan, Esomeprazole, Esomeprazole Placebo


Not yet recruiting



Results (where available)

View Results


Published on BioPortfolio: 2016-04-19T17:53:21-0400

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Medical and Biotech [MESH] Definitions

The S-isomer of omeprazole.

Retrograde bile flow. Reflux of bile can be from the duodenum to the stomach (DUODENOGASTRIC REFLUX); to the esophagus (GASTROESOPHAGEAL REFLUX); or to the PANCREAS.

Back flow of gastric contents to the LARYNGOPHARYNX where it comes in contact with tissues of the upper aerodigestive tract. Laryngopharyngeal reflux is an extraesophageal manifestation of GASTROESOPHAGEAL REFLUX.

Chronic ESOPHAGITIS characterized by esophageal mucosal EOSINOPHILIA. It is diagnosed when an increase in EOSINOPHILS are present over the entire esophagus. The reflux symptoms fail to respond to PROTON PUMP INHIBITORS treatment, unlike in GASTROESOPHAGEAL REFLUX DISEASE. The symptoms are associated with IgE-mediated hypersensitivity to food or inhalant allergens.

The R-isomer of lansoprazole that is used to treat severe GASTROESOPHAGEAL REFLUX DISEASE.

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