# Efficacy and Safety of Vonoprazan Compared to Lansoprazole in Participants With Helicobacter Pylori Infection

> **NCT04167670** · PHASE3 · COMPLETED · sponsor: **Phathom Pharmaceuticals, Inc.** · enrollment: 1046 (actual)

## Conditions studied

- Helicobacter Pylori Infection

## Interventions

- **DRUG:** Vonoprazan
- **DRUG:** Amoxicillin
- **DRUG:** Clarithromycin
- **DRUG:** Lansoprazole

## Key facts

- **NCT ID:** NCT04167670
- **Lead sponsor:** Phathom Pharmaceuticals, Inc.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-12-10
- **Primary completion:** 2021-03-10
- **Final completion:** 2021-03-18
- **Target enrollment:** 1046 (ACTUAL)
- **Last updated:** 2022-04-05


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04167670

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04167670, "Efficacy and Safety of Vonoprazan Compared to Lansoprazole in Participants With Helicobacter Pylori Infection". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04167670. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*