Variants *1, *2, *3 and *17 of CYP2C19 Cytochrome among Helicobacter Pylori Carriers from Manaus, Amazonas State, Brazil.

Even though the percentage of allele *3 was higher than expected, the percentage of allele *17, a possible contributor to H. pylori eradication failure, was also significant. The population that self-declared as brown showed a unique genotypic pattern, unlike any other population described in previous studies. Our results show that small populations may have genetic particularities that are relevant to therapeutic outcomes.
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