Dose-escalation study of isoniazid in healthy volunteers with the rapid acetylator genotype of arylamine N-acetyltransferase 2
2007
Objective
Genetic polymorphisms of arylamine N-acetyltransferase 2 (NAT2) result in large interindividual differences in the plasma concentration of isoniazid (INH). We hypothesized that the internationally recommended dosage should be increased for patients with two active NAT2 alleles (RA type) in order to achieve appropriate antituberculous efficiency; however, the pharmacokinetic effects of the dose increase have not been fully addressed. To estimate an optimal dosage for RA-type patients, we conducted a dose escalation study in healthy male volunteers carrying NAT2*4/*4.
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