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Purpose Camptothecin analogues are anticancer drugs effective when dosed in protracted schedules. Such treatment is best suited for oral formulations. AR-67 is a novel lipophilic analogue with potent efficacy in preclinical models. Here we assessed factors that may influence its oral bioavailability in rats. Methods Plasma pharmacokinetic (PK) studies were conducted following administration of AR-67...
Purpose The narrow efficacy-toxicity window of anticancer agents necessitates understanding of factors contributing to their disposition. This is especially true for camptothecins as they exist in the lactone and carboxylate forms with each moiety differentially interacting with efflux or uptake transporters. Here we determined the disposition of the lactone and carboxylate forms of AR-67, a 3rd generation...
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