Tegaserod Treatment for Dysmotility-Like Functional Dyspepsia: Results of Two Randomized, Controlled Trials

Vakil, Nimish; Laine, Loren; Talley, Nicholas J.; Zakko, Salam F.; Tack, Jan; Chey, William D.; Kralstein, Jeffrey; Earnest, David L.; Ligozio, Gregory; Cohard-Radice, Marielle
August 2008
American Journal of Gastroenterology;Aug2008, Vol. 103 Issue 8, p1906
Academic Journal
OBJECTIVES: Therapies for dysmotility-like functional dyspepsia (FD) are limited. We studied tegaserod, a selective serotonin type 4 receptor agonist, in patients with FD. METHODS: Two identical multicenter, double-blind, randomized, placebo-controlled trials enrolled women ≥18 yr with recurring mid-upper abdominal discomfort characterized by postprandial fullness, early satiety, and/or bloating. Patients were randomized to tegaserod 6 mg b.i.d. or placebo. Two patient-reported primary variables were assessed: percentage of days with satisfactory symptom relief, and symptom severity using the composite average daily severity score (CADSS). RESULTS: In total, 2,667 women were randomized with no differences between trials in terms of recruitment method, Helicobacter pylori status, heartburn, or medication use. Mean percentage of days with satisfactory symptom relief for tegaserod versus placebo in Trial 1: 32.2% versus 26.6% (95% CI of treatment difference 2.82, 9.27; P < 0.01), Trial 2: 31.9% versus 29.4% (95% CI of treatment difference −0.21, 6.53; P= 0.066). Mean CADSS in Trial 1: 3.14 versus 3.35 (95% CI of treatment difference −0.29, −0.10; P < 0.0001), Trial 2: 3.15 versus 3.23 (95% CI of treatment difference −0.18, 0.01; P= 0.094). Meta-analysis showed significant benefit for both end points: increase in days with satisfactory relief 4.6% (95% CI 2.29, 6.96); decrease in CADSS 0.14 (95% CI 0.21, 0.07). Treatment effect was greater in patients with severe baseline symptoms. Diarrhea requiring study discontinuation was more common with tegaserod than placebo (4.1% vs 0.3%). CONCLUSIONS: Some improvement in dysmotility-like FD was observed with tegaserod treatment. The clinical implication of this improvement is uncertain.


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