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Hybrid therapy is a novel two-step treatment achieving a high eradication rate forHelicobacter pylori infection. Currently, whether this new therapy achieves a higher eradication rate than bismuth quadruple therapy remains an unanswered question. The aim of this prospective, randomized comparative study was to investigate the efficacies of 14-day hybrid therapy and bismuth quadruple therapy in the treatment ofH. pylori infection. From July 2013 to June 2015, eligibleH. pylori -infected subjects were randomly assigned to receive either 14-day bismuth quadruple therapy (pantoprazole, bismuth subcitrate, tetracycline, and metronidazole for 14 days) or 14-day hybrid therapy (a 7-day dual therapy with pantoprazole plus amoxicillin, followed by a 7-day quadruple therapy with pantoprazole plus amoxicillin, clarithromycin, and metronidazole).H. pylori status was examined 6 weeks after the end of treatment. Three hundred thirtyH. pylori -infected participants were randomized to receive 14-day bismuth quadruple therapy (n = 164) or 14-day hybrid therapy (n = 166). The eradication rates by intention-to-treat analysis were similar: 93.9% versus 92.8%, respectively (95% confidence interval [CI], −4.3% to 5.4%;P = 0.68). Per-protocol analysis yielded similar results (96.7% versus 94.9%, respectively;P = 0.44). However, bismuth quadruple therapy had a higher frequency of adverse events than hybrid therapy (55.5% versus 15.7%, respectively; 95% CI, 30.4% to 49.2%;P &lt; 0.001). The two treatments exhibited comparable drug adherence (93.9% versus 97%, respectively). The resistance rates of antibiotics were: clarithromycin, 16.7% of patients; amoxicillin, 1.3%; metronidazole, 25%; and tetracycline, 0%. In the bismuth quadruple therapy group, the eradication rate of metronidazole-resistant strains was lower than that of metronidazole-susceptible strains (70.0% versus 96.4%, respectively;P = 0.04). In the hybrid therapy group, no significant impact of clarithromycin or metronidazole resistance on eradication rates was identified. Both 14-day hybrid and bismuth quadruple therapies cure most patients withH. pylori infection in populations with moderate antibiotic resistance. However, the 14-day hybrid therapy has fewer adverse effects than the bismuth quadruple therapy. (This study has been registered at ClinicalTrials.gov under identifier NCT02541864.)

antimicrobial agents and chemotherapy

A Randomized Controlled Trial Shows that both 14-Day Hybrid and Bismuth Quadruple Therapies Cure Most Patients with Helicobacter pylori Infection in Populations with Moderate Antibiotic Resistance