Active clinical trials for "HIV Infections"

The purpose of this study is to compare the proportion of subjects with HIV-1 RNA viral load < 50 c/mL through Week 48 of the Maintenance Phase among HIV-infected subjects with an initial undetectable viral load following an Induction Phase with an ATV/RTV containing HAART regimen, when switched to ATV versus remaining on ATV/RTV, whilst continuing their previous NRTI backbone.

In 1999, when initiating antiretroviral treatment in HIV infected adults, a triple combination with protease inhibitor is recommended. Such therapy induces side effects and the number of pills may reduce therapy adherence. The aim of this study is to evaluate the efficacy and the safety of a once daily FTC, ddI, efavirenz combination, in HIV patients with CD4 cell count over 100/mm3, antiretroviral naive.

The combination of two nucleoside analogues and one protease inhibitor is a highly active antiretroviral therapy (HAART) in HIV infected adults. In those with an undetectable viral load, a once daily combination of FTC, ddI, efavirenz would be easier to take, with less side effects and the same efficacy. The aim of the study was to evaluate if the once daily combination presents the same efficacy than the HAART therapy with less side effects and a better adherence.

HIV infected patients are treated with highly active antiretroviral therapy (HAART). Side effects and the great number of pills reduces adherence to the treatment, and induces therapeutic failure. In order to maintain efficacy of HAART, new combination is evaluated. The aim of the study is to compare the antiviral efficacy of this salvage therapy combining lopinavir and amprenavir with 200 mg/d or 400 mg/d ritonavir, together with nucleoside reverse transcriptase inhibitors, over a 26-week period in HIV-infected patients in whom multiple antiretroviral regimens had failed.

The purpose of this study is to learn whether the study vaccine and adjuvants (drugs that are used to help improve immune responses) have an acceptable safety profile in treating individuals with HIV. A second purpose of this study is to understand how the immune system responds to the study vaccine and adjuvants.

Combination antiretroviral therapy for the treatment of HIV has a high pill burden. Two dual-tablets, abacavir-lamivudine and tenofovir-emtricitabine, are now licensed in the United States and will be available in Australia in December 2005. Data available suggest that the potency of these tablets are similar in controlling replication of the HIV virus, but not have not been directly compared in regard to clinically significant toxicities. We therefore aim to compare the overall safety and efficacy of the two dual-tablets over a 2 year period in HIV infected adults. We hypothesise that the two dual-NRTI treatments will be similar in efficacy and safety.

The purpose of this clinical trial is to characterize drug interactions between one medicinal herb widely used by HIV infected patients: Echinacea sp. and the protease inhibitor darunavir/ritonavir.

The objective of this study is to discover a new approach in which human immunodeficiency virus (HIV) can be eradicated from an infected individual by intensified antiretroviral treatment coupled with immunomodulation. The hypothesis is that eradication is possible only if very potent antiretroviral drugs are delivered in conjunction with an immunomodulatory agent that simultaneously attack the viral reservoirs.

The licensed dose of raltegravir is 400 mg twice daily with or without food. Raltegravir is metabolized predominantly through glucuronidation by UGT1A1. Atazanavir increases the plasma concentrations of raltegravir 400 mg twice daily by 72% due to inhibition of UGT 1A1. This suggests that combined use of atazanavir and a lower dose frequency of raltegravir, once daily for example, is possible. Another reason why raltegravir most likely can be applied is that its pharmacodynamic effect is not related to Cmin but to AUC which is expected to be similar for an 800mg QD dose when compared to 400mg BD. Phase III clinical trials evaluating QD dosing of raltegravir are currently ongoing and interim results are expected to be published in mid 2009. A regimen of atazanavir and raltegravir in combination with lamivudine or emtricitabine may be a well tolerated and effective NNRTI-, and ritonavir-sparing regimen that could be an attractive option for both first and second line (after NRTI/NNRTI failure) treatment regimens.

This is a phase I, open-label, controlled drug interaction study to determine the effects of darunavir plus ritonavir on the pharmacokinetics of the hydroxymethylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, rosuvastatin, in HIV-1-seronegative subjects.