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  • Title: Clinical trial: clarithromycin vs. levofloxacin in first-line triple and sequential regimens for Helicobacter pylori eradication.
    Author: Molina-Infante J, Perez-Gallardo B, Fernandez-Bermejo M, Hernandez-Alonso M, Vinagre G, Dueñas C, Mateos-Rodriguez JM, Gonzalez-Garcia G, Abadia EG, Gisbert JP.
    Journal: Aliment Pharmacol Ther; 2010 May; 31(10):1077-84. PubMed ID: 20180787.
    Abstract:
    BACKGROUND: Helicobacter pylori eradication rates with standard triple therapy have declined to unacceptable levels. AIM: To compare clarithromycin and levofloxacin in triple and sequential first-line regimens. METHODS: A total of 460 patients were randomized into four 10-day therapeutic schemes (115 patients per group): (i) standard OCA, omeprazole, clarithromycin and amoxicillin; (ii) triple OLA, omeprazole, levofloxacin and amoxicillin; (iii) sequential OACM, omeprazole plus amoxicillin for 5 days, followed by omeprazole plus clarithromycin plus metronidazole for 5 days; and (iv) modified sequential OALM, using levofloxacin instead of clarithromycin. Eradication was confirmed by 13C-urea breath test. Adverse effects and compliance were assessed by a questionnaire. RESULTS: Per protocol cure rates were: OCA (66%; 95% CI: 57-74%), OLA (82.6%; 75-89%), OACM (80.8%; 73-88%) and OALM (85.2%; 78-91%). Intention-to-treat cure rates were: OCA (64%; 55-73%), OLA (80.8%; 73-88%), OACM (76.5%; 69-85%) and OALM (82.5%; 75-89%). Eradication rates were lower with OCA than with all the other regimens (P < 0.05). No differences in compliance or adverse effects were demonstrated among treatments. CONCLUSIONS: Levofloxacin-based and sequential therapy are superior to standard triple scheme as first-line regimens in a setting with high clarithromycin resistance. However, all of these therapies still have a 20% failure rate.
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