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Completed Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation of Effect of Vonoprazan on Midazolam Pharmacokinetics in Healthy Participants

ClinicalTrials.gov ID: NCT04545944

Public ClinicalTrials.gov record NCT04545944. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 2, 2026, 4:17 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

An Open-Label, Fixed Sequence, Clinical Drug Interaction Study to Evaluate the Time-Dependent Inhibition Potential of Vonoprazan on a Sensitive CYP3A4 Substrate, Midazolam, in Healthy Volunteers

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

To determine the time-dependent inhibition potential of repeated doses of oral vonoprazan on the pharmacokinetics (PK) of a single oral dose of midazolam, a sensitive cytochrome P450 3A4 (CYP3A4) substrate, in healthy participants.

Study identification

NCT ID
NCT04545944
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1
Lead sponsor
Phathom Pharmaceuticals, Inc.
Industry
Enrollment
20 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years to 45 Years
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Sep 14, 2020
Primary completion
Nov 12, 2020
Completion
Nov 24, 2020
Last update posted
Mar 16, 2023

2020

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
PPD Development, LP Austin Texas 78744

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04545944, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Mar 16, 2023 · Synced Sep 2, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT04545944 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →