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Vonoprazan Test for PPI Refractory GERD
Sponsor: Fu Jen Catholic University Hospital
Summary
Among patients suffering from gastroesophageal reflux disease (GERD) symptoms, esophageal pH monitoring and the assessment of symptom-reflux correlation can identify two distinct subgroups characterized by normal acid exposure: functional heartburn and reflux hypersensitivity. Given the absence of abnormal acid exposure in these groups, conventional antacid therapies often yield unsatisfactory clinical outcomes. Therefore, in cases of PPI-refractory GERD, it is hypothesized that patients with underlying abnormal acid reflux will respond to Vonoprazan, a more potent potassium-competitive acid blocker (P-CAB). Conversely, those whose symptoms are unrelated to acid reflux are expected to show poor response. For future refractory patients without definitive endoscopic evidence of GERD (such as Los Angeles Grade B, C, or D esophagitis, peptic stricture, or histologically confirmed Barrett's esophagus), a Vonoprazan therapeutic trial could potentially bypass the need for invasive high-resolution manometry (HRM) and 24-hour pH-impedance monitoring. Evaluating the efficacy of Vonoprazan may offer diagnostic insights while minimizing patient discomfort and reducing overall healthcare expenditures.
Official title: Vonoprazan Test for Proton Pump Inhibitor Refractory Gastroesophageal Reflux Disease
Key Details
Gender
All
Age Range
20 Years - 75 Years
Study Type
INTERVENTIONAL
Enrollment
100
Start Date
2025-12-24
Completion Date
2026-10-28
Last Updated
2026-02-27
Healthy Volunteers
No
Conditions
Interventions
Patients received a 4-week treatment of vonoprazan 20 mg once daily (VOCINTI®)
Participants undergoing HRM and 24-hour pH-impedance monitoring were enrolled after providing informed consent. Baseline GERD-related questionnaires were administered on the day of the procedure. Patients then received a 4-week treatment of vonoprazan 20 mg once daily (VOCINTI®). After four weeks, patients returned for a follow-up visit to review their diagnostic reports and complete a second set of questionnaires. Final treatment strategies were adjusted according to the test findings.
Locations (1)
Fu Jen Catholic University Hospital
New Taipei City, Taiwan, Taiwan