1. Esomeprazole 40 mg once a day in patients with functional dyspepsia: the randomized, placebo-controlled "ENTER" trial.
- Author
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van Zanten SV, Armstrong D, Chiba N, Flook N, White RJ, Chakraborty B, and Gasco A
- Subjects
- Administration, Oral, Adult, Aged, Anti-Ulcer Agents therapeutic use, Dose-Response Relationship, Drug, Double-Blind Method, Dyspepsia diagnosis, Endoscopy, Gastrointestinal, Esomeprazole therapeutic use, Female, Follow-Up Studies, Humans, Male, Middle Aged, Quality of Life, Severity of Illness Index, Treatment Outcome, Anti-Ulcer Agents administration & dosage, Dyspepsia drug therapy, Esomeprazole administration & dosage
- Abstract
Objective: The etiologies of functional dyspepsia (FD) are unclear, but in some studies, treatment with a proton pump inhibitor has been beneficial. The objective of this study was to evaluate the efficacy of esomeprazole 40 mg once a day compared to placebo in achieving symptom relief in primary care patients with FD., Methods: This was a randomized, placebo-controlled trial in adult FD patients, who had at least moderate severity of symptoms, defined as a score of > or =4 on a 7-point Global Overall Symptom (GOS) scale. Patients were excluded if they had predominant symptoms of heartburn or regurgitation; after a normal baseline endoscopy, patients were randomized to esomeprazole 40 mg once daily or placebo for 8 wk. The primary outcome measure was symptom relief (GOS < or =2) at 8 wk., Results: Of the 502 enrolled patients, 224 were randomized. The main reasons for exclusion were abnormal endoscopic findings, especially esophagitis. A significantly greater proportion of patients in the esomeprazole group achieved symptom relief at 4 but not at 8 wk compared to placebo: 4 wk esomeprazole 50.5% versus placebo 32.2%, p= 0.009; 8 wk esomeprazole 55.1% versus placebo 46.1%, p= 0.16. A similar relationship at 4 and 8 wk was seen for symptom resolution (GOS = 1) and improvement (DeltaGOS > or =2)., Conclusion: For the primary outcome measure of symptom relief at 8 wk, there was no statistically significant difference between esomeprazole 40 mg once a day and placebo. However, at 4 wk, esomeprazole was significantly more effective than placebo for symptom relief. The difference in therapeutic gain between 4 and 8 wk was largely due to a higher placebo response rate at 8 wk.
- Published
- 2006
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