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Oral Fosamprenavir for GERD

A Phase 2, Randomized, Double-blind, Placebo-controlled Trial of Fosamprenavir Administered Orally for 8 Weeks in Older Adults With Proton Pump Inhibitor Refractory Gastroesophageal Reflux Disease

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06704100
Enrollment
60
Registered
2024-11-25
Start date
2027-10-01
Completion date
2029-03-01
Last updated
2026-09-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Gastroesophageal Reflux Disease, Refractory Gastroesophageal Reflux Disease

Keywords

PPI-refractory GERD, Proton pump inhibitor refractory gastroesophageal reflux disease, Fosamprenavir

Brief summary

The goal of this clinical trial is to learn if study drug Fosamprenavir administered orally improves symptoms for Proton Pump Inhibitor (PPI)-refractory Gastro Esophageal Reflux Disease (GERD). The main questions it aims to answer are: 1. Does fosamprenavir significantly improve heartburn severity over the 8-week treatment period 2. Does fosamprenavir significantly improve regurgitation frequency over the 8-week treatment period 3. Does fosamprenavir significantly improve symptoms of persistent GERD over the 8-week treatment period Researchers will compare fosamprenavir to a placebo (a look-alike substance that contains no active drug) to see if fosamprenavir works to treat PPI-refractory GERD. Participants will: 1. Take fosamprenavir or placebo every day BID (twice a day) for 8 weeks 2. Visit the Adult Translational Research Unit (ATRU) seven times for consenting, screening, and checkups and tests 3. Keep a daily diary of their symptoms of persistent GERD

Interventions

DRUGFosamprenavir Calcium 700 MG Oral Tablet

1400 mg fosamprenavir BID

OTHERPlacebo

Placebo pill

Sponsors

Medical College of Wisconsin
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

We have partnered with Froedtert Hospital's Investigative Drug Services (FH IDS) in order to randomize subjects to either treatment or placebo. Only FH IDS will have the key linking subjects to treatment groups, and the power to conduct an emergency un-blinding.

Intervention model description

Proof-of-Concept

Eligibility

Sex/Gender
ALL
Age
50 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Patient aged 50-65 selected as candidate for anti-reflux surgery by study providers. 2. Patient has received, and continued having GERD symptoms during, standard-labeled dose, daily, PPI therapy for a minimum of 8 weeks before the Screening Visit. 3. Patient has a diagnosis of GERD with endoscopy and/or pH-metry test within the past two years demonstrating 1 or more of the following: 1. Erosive esophagitis (Grade A or greater based on the Los Angeles classification of esophagitis; Appendix 3) 2. Evidence of pathological acid reflux (pH \< 4 for ≥ 4-6% off therapy or ≥ 1-4% on therapy) during a 24-hour time interval of pH testing 4. Patient reports heartburn severity (HS, Item #1 on mRESQ-eD) ≥ 3 (moderate) on at least 2 days and has an average HS of ≥ 2 (mild) during the last 7 days of the Pretreatment Period before Randomization.

Exclusion criteria

1. Patient is suspected of having, functional upper gastrointestinal disorders such as functional dyspepsia or functional heartburn diagnosed by the Rome IV criteria; Appendix 4. 2. Patient has endoscopically confirmed eosinophilic esophagitis (EE).

Design outcomes

Primary

MeasureTime frameDescription
Weekly Heartburn Severity ScoreBaseline to Treatment Week 8 (End of Treatment)The absolute change from baseline (Pretreatment) in heartburn severity as indicated by Weekly Heartburn Severity Score (WHSS; based on items 1 and 2 of the modified Reflux Symptom Questionnaire Electronic Diary, mRESQ-eD) over time, with the primary treatment comparison at Week 8 (End of Treatment)

Secondary

MeasureTime frameDescription
Weekly Regurgitation Frequency ScoreBaseline to Treatment Week 8 (End of Treatment)The absolute change from baseline in regurgitation frequency as indicated by Weekly Regurgitation Frequency Score (WRFS; based on items 6 and 7 of the mRESQ-eD) over time, with the primary treatment comparison at Week 8.
Weekly Heartburn-free DaysBaseline to Treatment Week 8 (End of Treatment)The absolute change from baseline in weekly heartburn-free days as indicated by Weekly Heartburn-Free Days (WHFD; i.e. the total number of symptom-free days per week, with symptom-free defined as "Did not have" response to items 1 and 2 of the mRESQ-eD), over time, with the primary treatment comparison at Week 8.
Weekly Overall Reflux Symptom-free DaysBaseline to Treatment Week 8 (End of Treatment)The absolute change from baseline in weekly overall reflux symptom-free days as indicated by Weekly Symptom-Free Days (WSFD; i.e. the total number of symptom-free days per week, with symptom-free defined as "Did not have" or "Never" response to all items of the mRESQ-eD), over time, with the primary treatment comparison at Week 8.

Countries

United States

Contacts

CONTACTAlly Lesnick, BSc
alesnick@mcw.edu414-955-2659
CONTACTNikki Johnston, PhD.
njohnston@mcw.edu414-955-4075
PRINCIPAL_INVESTIGATORNikki Johnston, PhD.

Medical College of Wisconsin

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 11, 2026