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Randomized controlled trial: PPI-based triple therapy containing metronidazole versus clarithromycin as first-line treatment for Helicobacter pylori in adolescents and young adults in Japan.

Randomized controlled trial: PPI-based triple therapy containing metronidazole versus clarithromycin as first-line treatment for Helicobacter pylori in adolescents and young adults in Japan.
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Mabe K, Okuda M, Kikuchi S, Amagai K, Yoshimura R, Kato M, Sakamoto N, Asaka M, ,


Mabe K, Okuda M, Kikuchi S, Amagai K, Yoshimura R, Kato M, Sakamoto N, Asaka M, , (click to view)

Mabe K, Okuda M, Kikuchi S, Amagai K, Yoshimura R, Kato M, Sakamoto N, Asaka M, ,

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Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy 2018 03 28() pii S1341-321X(18)30078-3
Abstract
BACKGROUND/AIMS
Treating Helicobacter pylori infection in young people is effective for preventing gastric cancer. This study compares the efficacy of triple therapies in adolescents and young adults in Japan.

METHODS
This multicenter, randomized trial was conducted between February 2012 and March 2015. Infected participants were stratified into adolescents (13-19 years) and young adults (20-39 years). They were randomly assigned to a clarithromycin based (PAC) or metronidazole based (PAM) triple therapy for 1 week.

RESULTS
Overall, 137 and 169 participants received the PAC and PAM treatments, respectively. In adolescents, the H. pylori eradication rates were 60.5% and 63.4% for PAC, and 98.3% and 100% for PAM in the intention-to-treat (ITT) and per-protocol (PP) analyses, respectively. In young adults, the eradication rates were 67.0% and 66.7% for PAC, and 95.5% and 96.3% for PAM in ITT and PP analyses, respectively. The eradication rate of PAM was significantly higher than that of PAC in both strata. No severe adverse events were observed.

CONCLUSION
In Japan, PAM may be selected as a first-line treatment for young people with H. pylori if antibiotic susceptibility tests cannot be performed.

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