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Helicobacter pylori Eradication with Proton Pump Inhibitors or Potassium-Competitive Acid Blockers: The Effect of Clarithromycin Resistance

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Abstract

Background

Vonoprazan is a novel potassium-competitive acid blocker (P-CAB) recently approved for Helicobacter pylori eradication therapy in Japan.

Aims

To compare PPI- and P-CAP-containing triple therapy and vonoprazan-based triple therapy.

Methods

Two hundred ninety-five initial subjects received a PPI-containing triple therapy; the next 125 subjects received vonoprazan-containing triple therapy. Two sequential groups received 7-day eradication regimens consisting of amoxicillin 750 mg, clarithromycin 200 mg both twice a day with standard dose PPI or vonoprazan (20 mg) each twice daily. H. pylori eradication was confirmed by a 13C-UBT. Clarithromycin susceptibility was evaluated by 23S rRNA PCR.

Results

Population cure rates with clarithromycin susceptible strains were 89.6 versus 100 % for PPI and vonoprazan therapies, respectively. Cure rates with resistant strains were 40.2 % with PPI therapy versus 76.1 % with vonoprazan triple therapy. There was no difference in side effects.

Conclusions

Although 7-day P-CAB triple therapy was superior to 7-day PPI triple therapy, neither was highly effective, or can be recommended, in the presence of clarithromycin-resistant infections.

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Correspondence to Akiko Shiotani.

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Matsumoto, H., Shiotani, A., Katsumata, R. et al. Helicobacter pylori Eradication with Proton Pump Inhibitors or Potassium-Competitive Acid Blockers: The Effect of Clarithromycin Resistance. Dig Dis Sci 61, 3215–3220 (2016). https://doi.org/10.1007/s10620-016-4305-0

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  • DOI: https://doi.org/10.1007/s10620-016-4305-0

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