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  • Title: Elvitegravir: a once-daily inhibitor of HIV-1 integrase.
    Author: Wills T, Vega V.
    Journal: Expert Opin Investig Drugs; 2012 Mar; 21(3):395-401. PubMed ID: 22321026.
    Abstract:
    INTRODUCTION: Elvitegravir (EVG) is a potent inhibitor of HIV-1 integrase (IN) undergoing Phase III clinical trials. It blocks the strand-transfer step in a multi-step process that allows double-stranded cDNA to be irreversibly incorporated within the host DNA. It is the second member of the HIV-1 IN inhibitor class, following raltegravir. Co-administration with a CYP3A inhibitor, such as ritonavir or cobicistat, substantially increases EVG plasma exposure and prolongs elimination half-life. AREAS COVERED: A Medline review of Phase II and III trials involving EVG as well as a review of abstracts from major HIV and infectious disease conferences from 2010 to 2011 was conducted. EVG produces rapid and durable virologic suppression when combined with active background therapy. Trials investigating the efficacy of once-daily co-formulated elvitegravir/cobicistat/emtricitabine/tenofovir (EVG/COBI/FTC/TDF) demonstrate a high rate of virologic suppression with fewer CNS and psychiatric adverse events compared with co-formulated efavirenz/emtricitabine/tenofovir. The resistance profile for EVG is similar to raltegravir. EXPERT OPINION: Co-formulated EVG/COBI/FTC/TDF is an option for the treatment of antiretroviral naïve and experienced patients. Once-daily dosing offers an advantage over raltegravir, but the requirement for pharmacologic boosting increases regimen complexity. Dolutegravir in development offers a favorable resistance profile and no requirement for pharmacologic boosting.
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