[Study of gene polymorphism responsible for metabolism of proton pump inhibitors in children with H. pylori infection: is there a correlation with efficacy of eradication treatment?].

UNLABELLED: THE AIM of this study was to determine the effects of CYP2C19 polymorphism on H. pylori eradication in pediatric population in the Republic of Bashkortostan. METHODS: Fifty-nine children were entered into the study (age range: 12 to 17; 22 female). All the patients were infected with H. pylori and received the combination of omeprazole (1 mg/kg/day), furazolidone (10 mg/kg/day) and amoxicilline (25 mg/kg/day) or clarithromycin (7.5 mg/kg/day) for 10 days. The participants were classified into 3 groups according to CYP2C19 genotype; rapid metabolizers (RM) (54.2%), intermediate metabolizers (IM) (35.6%) and poor metabolizers (PM) (10.2%). H. pylori infection status was assessed before and after the treatment. RESULTS: The eradication rate was 65.6% for RM, 71.4% for IM, and 83.3% for PM. CONCLUSION: The present study confirmed the low eradication rate for RM and for the IM groups. Alternative regimens expected to be with a higher eradication rate should be recommended (rabeprazole-based treatment).