Trial participants received either once-daily elvitegravir (150 mg or 85 mg) or twice-daily raltegravir (400 mg). Patients’ background regimens were based on the results of resistance testing and included a fully-active ritonavir-boosted protease inhibitor, and a second agent that was permitted to be a nucleoside or nucleotide reverse transcriptase inhibitor, etravirine, maraviroc or enfuvirtide. Due to known pharmacokinetic interactions, patients randomized to elvitegravir whose background protease inhibitor was either atazanavir or lopinavir received an 85 mg dose of elvitegravir.In January 2011, Gilead announced that it would extend the blinded, randomized period of Study 145 from the originally planned 48 weeks to 96 weeks in order to obtain longer-term safety and efficacy data. Based on the achievement of the non-inferiority endpoint at 48 weeks, patients continued to receive the regimen to which they were originally randomized in a blinded fashion through 96 weeks. Secondary endpoints included additional measures of the efficacy, safety and tolerability of the two treatment regimens.
Gilead’s HIV Integrase Inhibitor Elvitegravir Dosed Once Daily As Effective As Twice-Daily Raltegravir Over Two Years Of Therapy In Pivotal Phase 3 Study
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