Abstract
Gastritis is one of the most frequently diagnosed diseases requiring medical treatment in South Korea. Fexuprazan, a novel potassium-competitive acid blocker, has been approved for treating gastritis and erosive esophagitis. Meanwhile, rebamipide is the most commonly used mucoprotective agent for acute and chronic gastritis in real-world settings in South Korea. However, there have been no studies comparing the efficacy of these two drugs yet. To compare the efficacy of fexuprazan with that of rebamipide for acute and chronic gastritis. This was a matching-adjusted indirect comparison. Individual patient data from a phase III study of fexuprazan (10 mg BID) were compared with cumulative data from two matching studies of rebamipide (100 mg TID). Erosion improvement and healing rates were compared between two weeks of fexurapan, two weeks of rebamipide, and four weeks of rebamipide. The two main outcome variables were presented as percentages, and the risk differences (RD) and 95% confidence intervals (CI) were calculated for the relative treatment effects. In the primary analysis, the erosion improvement and healing rates after a two-week treatment with fexuprazan were 64.5% and 53.2%, respectively, while a two-week treatment with rebamipide resulted in erosion improvement and healing rates of 43.6% (RD: 21.0%; 95%CI: 9.6-32.3; P < 0.01) and 35.6% (RD: 17.6%; 95%CI: 6.1-29.2; P = 0.003), respectively. In the additional analysis, the erosion improvement and healing rates for the two-week fexuprazan treatment (64.2% and 51.2%, respectively) were similar to those obtained during a four-week treatment with rebamipide (60.6%; RD: 3.6%; 95%CI: -9.8, 17.0; P = 0.600 and 53.5%; RD: -2.3%; 95%CI: -16.1, 11.5; P = 0.744, respectively). The two-week fexuprazan treatment was superior to the two-week rebamipide treatment and similar to the four-week rebamipide treatment for patients with gastritis.
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