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Gilead Submits Request for FDA Approval of Tenofovir Alafenamide Coformulation

Gilead Sciences this week announced that it has submitted an application to the U.S. Food and Drug Administration (FDA) seeking approval of a single-tablet regimen containing tenofovir alafenamide (TAF) -- a new version of the widely used antiretroviral that causes less kidney and bone toxicity -- coformulated with its new integrase inhibitor elvitegravir, cobicistat, and emtricitabine.

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HIV Drug Therapy: Truvada PrEP Use Rising, Especially Among Men

The number of people using Truvada for pre-exposure prophylaxis (PrEP) in the U.S. is increasing, and a growing proportion of users are men, according to an analysis of data from approximately half of American pharmacies presented this week at the HIV Drug Therapy 2014 conference in Glasgow.

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HIV Drug Therapy: Efavirenz Compromises Hormonal Contraceptive Implant

The widely prescribed non-nucleoside reverse transcriptase inhibitor (NNRTI) efavirenz substantially reduces levels of the hormonal contraceptive levonorgestrel, a component of a progesterone contraceptive implant widely used in developing countries, according to findings from a study conducted in Uganda presented this week at the HIV Drug Therapy Glasgow conference.

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HIV Drug Therapy: Australia Performs Best in HIV Treatment Cascade -- 62% Undetectable Viral Load

Australia and northern European countries are doing far better than North America at retaining people living with HIV in care and achieving viral suppression, according to a comprehensive survey of treatment cascades in high-income countries presented this week at the International Congress on Drug Therapy in HIV Infection in Glasgow.

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HIV R4P: Vaginal Rings Show Promise for HIV Prevention

A silicone intravaginal ring that releases the antiretroviral drugs dapivirine and darunavir was shown to reach levels expected to be effective in vaginal and cervical fluid and tissues in monkeys, researchers reported at the HIV Research for Prevention meeting last week in Cape Town. A related study found that a single ring can potentially serve multiple purposes, preventing HIV, genital herpes, HPV, and pregnancy.

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HIV Drug Therapy: Do Emtricitabine and Lamivudine Have Similar Efficacy for First-line ART?

First-line antiretroviral regimens containing emtricitabine have superior virological efficacy to combinations containing lamivudine when combined with tenofovir and either nevirapine or efavirenz, Dutch investigators report in the October 1 online edition of Clinical Infectious Diseases and at the HIV Drug Therapy Glasgow conference taking place this week. Lamivudine was associated a significantly increased risk of virological failure when used in these regimens.

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HIV R4P: Injectable Rilpivirine Shows Promise, May Work Better for Anal than Vaginal Sex

A Phase 1 dose-finding and safety study in humans of TMC278-LA, a long-acting, injectable formation of the antiretroviral drug rilpivirine, found that a single 1200 mg dose could produce sustained drug levels in rectal tissues that could offer protection against HIV for 3 months, and did in fact suppress viral replication in so-called explants (biopsies of rectal mucosal cells) for that length of time. However -- and to the surprise of researchers presenting this study at the HIV Research for Prevention conference last week in Cape Town -- drug levels in vaginal and cervical cells were only about half of those seen in rectal cells, and viral replication was not suppressed in vaginal and cervical biopsies taken from women given TMC278-LA.

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