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Experimental HIV Drugs

FDA Approves ViiV Single-Tablet Regimen Containing Dolutegravir

ViiV Healthcare announced today that the U.S. Food and Drug Administration (FDA) has approved its all-in-1 antiretroviral fixed-dose combination pill containing the HIV integrase inhibitor dolutegravir (Tivicay) plus abacavir and lamivudine (the drugs in Epzicom or Kivexa). The new coformulation -- with the brand name Triumeq -- is the first single-tablet regimen that does not contain tenofovir and emtricitabine, making it an option for people with impaired kidney function. HLA-B*5701 genetic screening should be done prior to starting Triumeq to test for abacavir hypersensitivity.

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Janssen and ViiV to Develop NRTI-free Single-tablet Regimen

Janssen R&D and ViiV Healthcare announced last week that they will collaborate on the development of a dual single-tablet regimen containing the non-nucleoside reverse transcriptase inhibitor (NNRTI) rilpivirine and the new integrase inhibitor dolutegravir, to be used as maintenance therapy for people who achieve viral suppression using a traditional regimen.

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CROI 2014: Novel 2-Drug Maintenance Combo Works Well, Stage Set for Long-lasting Injectables

An oral combination of 2 antiretroviral drugs -- the non-nucleoside reverse transcriptase inhibitor rilpivirine (Edurant, also in Complera or Eviplera) and the new integrase inhibitor GSK1265744 -- was at least as effective as a standard NRTIs-plus-efavirenz triple combination in keeping viral load undetectable, according to a report presented at the 21st Conference on Retroviruses and Opportunistic Infections (CROI 2014) last week in Boston.

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CROI 2014: New NNRTI Doravirine Matches Efavirenz for First-line HIV Treatment

The next-generation non-nucleoside reverse transcriptase inhibitor doravirine (formerly MK-1439) showed potent antiretroviral activity and good tolerability in combination with tenofovir/emtricitabine (the drugs in Truvada) in a dose-finding study presented at the 21st Conference on Retroviruses and Opportunistic Infections (CROI 2014) last week in Boston.

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CROI 2014: Long-Acting HIV Drugs for Maintenance Therapy [VIDEO]

A combination of 2 antiretrovirals used as maintenance therapy for people with undetectable viral load -- the next-generation integrase inhibitor GSK1265744 and the NNRTI rilpivirine (Edurant) -- led to continued viral suppression in more than 80% of treated patients, according to a report at the 21st Conference on Retroviruses and Opportunistic Infections (CROI 2014) last week in Boston.

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This study was done in preparation for a trial of long-acting injectable formulations of GSK1265744 (or GSK744 for short) and rilpivirine. These findings suggest that these drugs may be feasible for long-term maintenance therapy, though concerns remain about development of resistance under certain circumstances.

[David Margolis, CROI press conference, March 5, 2014]

See also: CROI 2014: Novel 2-Drug Maintenance Combo Works Well, Stage Set for Long-lasting Injectable [study report]

3/10/14

Reference

D Margolis, C Brinson, J Eron, et al. 744 and Rilpivirine as Two-Drug Oral Maintenance Therapy: LAI116482 (LATTE) Week 48 Results. 21st Conference on Retroviruses and Opportunistic Infections (CROI 2014). Boston, March 3-6. Abstract 91LB.