Efficacy of Vonoprazan for Gastroesophageal Reflux Symptoms in Patients with Proton Pump Inhibitor-resistant Non-erosive Reflux Disease.

Abstract

Objective Clinically, patients with proton pomp inhibitor (PPI)-resistant gastroesophageal reflux disease (GERD) are very challenging to treat. The aim of this study was to determine the rates of symptom relief and adverse events among PPI-resistant GERD patients that changed their therapy from a PPI to vonoprazan. Methods Patients with severe gastroesophageal reflux symptoms (total GERD-Q score ≥8) without endoscopic findings of mucosal breaks who changed their medication from a PPI to vonoprazan during a 12-week period from 2015 to 2016 at 2 hospitals were selected. The primary outcome was the self-reported relief of gastroesophageal reflux symptoms. The odds ratio (OR) for the improvement of symptoms was calculated based on an exact binomial distribution using a matched-pair analysis. The secondary outcome was the GERD-Q score and adverse events. Results Twenty-six patients (6 men) with a mean age of 67.5 years were analyzed. After the therapy was changed from a PPI to vonoprazan, 18 patients (69.2%) reported an improvement, 6 (23.1%) reported no change, and 2 (7.7%) reported an exacerbation of symptoms. A change in therapy was significantly associated with improved self-reported symptoms (OR 9.0, p<0.001). The mean total GERD-Q score during vonoprazan treatment was significantly lower than that during PPI therapy (11.96 vs. 8.92). There were no significant differences in the incidence of adverse events between the therapies. Conclusion Changing the medication from a PPI to vonoprazan was significantly associated with an improvement in gastroesophageal reflux symptoms. Vonoprazan is one of the most promising treatment options for patients with PPI-resistant GERD.

• Authors: Ryota Niikura, Atsuo Yamada, Yoshihiro Hirata, Yoku Hayakawa, Akihiro Takahashi, Tomohiro Shinozaki, Yoshinori Takeuchi, Mitsuhiro Fujishiro, Kazuhiko Koike
• Journal: Internal medicine (Tokyo, Japan) (Intern Med) Vol. 57 Issue 17 Pg. 2443-2450 (Sep 01 2018) ISSN: 1349-7235 [Electronic] Japan
• PMID: 29607951 (Publication Type: Journal Article)

Chemical References

• 1-(5-(2-fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl)-N-methylmethanamine
• Proton Pump Inhibitors
• Pyrroles
• Sulfonamides

Topics

• Adult
• Aged
• Female
• Gastroesophageal Reflux (drug therapy)
• Humans
• Male
• Middle Aged
• Odds Ratio
• Proton Pump Inhibitors (therapeutic use)
• Pyrroles (therapeutic use)
• Retrospective Studies
• Self Report
• Sulfonamides (therapeutic use)
• Treatment Outcome