Examining the safety of vonoprazan in pregnant women and their babies
Official title: Vonoprazan Pregnancy Registry: An Observational Study of the Safety of Vonoprazan Exposure in Pregnant Women and Their Offspring
Run by Phathom Pharmaceuticals, Inc. · NCT06660342 · Data updated 2026-11-12
This study is testing whether taking vonoprazan during pregnancy is safe for both mothers and their babies by comparing outcomes between those who took the medication and those who didn’t.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 15 Years to 50 Years |
| Sex | Women only |
| Enrollment | 728 (estimated) |
| Sponsor | Phathom Pharmaceuticals, Inc. Industry-sponsored |
| Locations | 1 site (Wilmington, North Carolina) |
| Status | Recruiting |
| Started | May 15, 2025 |
| Main results expected | September 2034 |
| Study ends | September 2034 |
| Registry record updated | September 18, 2026 |
| Trial ID | NCT06660342 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are pregnant women aged 15 to 50 who have either been exposed to vonoprazan or are part of a comparison group that has not been exposed.
✕Probably not a fit
Patients who have experienced pregnancy outcomes prior to the study's initial contact or those exposed to known teratogens may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study aims to assess the safety of vonoprazan exposure in pregnant women by comparing maternal, fetal, and infant outcomes between those who have taken vonoprazan and those who have not. The study will include women aged 15 to 50 who are currently or recently pregnant, with one group having been exposed to vonoprazan and another serving as a comparison cohort. Data will be collected from healthcare providers to evaluate the effects of the medication on both mothers and their offspring.
Why it matters
Potential benefit: If successful, this study could provide critical insights into the safety of vonoprazan for pregnant women and their children.
How similar studies have gone: While this study focuses on a specific medication in a unique population, similar observational studies have provided valuable safety data for other medications during pregnancy.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Women 15 to 50 years of age. * Currently or recently pregnant. * Consent to participate. * Authorization for her health care provider(s) (HCP\[s\]) to provide data to the registry. * Exposed cohort: Exposure to at least one dose of vonoprazan during pregnancy. * Unexposed cohort: Unexposed to vonoprazan and diagnosis of any condition for which vonoprazan may be prescribed. Exclusion Criteria: * Occurrence of pregnancy outcome prior to first contact with the virtual research coordination center (VRCC) (retrospectively enrolled). * Exposure to known tetratogens and/or investigational medications during pregnancy. * Lost to follow-up.
Where it's running
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Ppd
Wilmington, North Carolina, United States Recruiting
Study contacts
- Study coordinator: VOQUEZNA Pregnancy Registry
- Email: DLVOQUEZNAPregnancyRegistry@ppd.com
- Phone: 1-866-609-1612
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.