Active clinical trials for "HIV Infections"

To evaluate the antiviral activity and safety of two formulations of saquinavir in combination with licensed nucleoside antiretroviral drugs.

To evaluate the safety and tolerance of the combination of adefovir dipivoxil at two comparative doses and nelfinavir plus saquinavir SGC administered orally (Group 1) vs. the combination of adefovir dipivoxil and nelfinavir plus either zidovudine, lamivudine, or stavudine (Group 2) vs. the combination of adefovir dipivoxil and saquinavir SGC plus either zidovudine, lamivudine, or stavudine (Group 3) in HIV-infected patients with prior nucleoside reverse transcriptase inhibitor therapy but no prior exposure to protease inhibitors who have CD4 cell counts >= 100 cells/mm3 and an HIV-1 RNA baseline copy number >= 5000 copies/ml. To determine the proportion of patients whose plasma HIV-1 RNA level falls below the level of detection (<500 copies/ml) at 20 weeks of study therapy and the average reduction in HIV-1 RNA from baseline through study week 20. To evaluate the durability of the antiviral response through 48 weeks of study in patients who continue on study therapy after week 24.

To explore the antiviral efficacy, tolerability and safety of saquinavir plus zidovudine plus lamivudine.

To evaluate the potential pharmacokinetic interaction between nevirapine and clarithromycin, and to determine the effects of nevirapine on cytochrome P450 3A4 (CYP3A4) activity in vivo.

The purpose of this study is to see if it is safe and effective to add 141W94 to an anti-HIV regimen that includes retrovir plus epivir.

The purpose of this study is to compare the safety and effectiveness of taking lamivudine (3TC) plus zidovudine (ZDV) plus a protease inhibitor (PI) with taking the 3TC/ZDV combination tablet (Combivir) plus a PI. This study also examines how well patients follow the dosing schedules for these drugs. Doctors believe that taking Combivir plus a PI may be as effective as taking 3TC plus ZDV plus a PI.

The purpose of this study is to compare the effectiveness of taking didanosine (ddI) once a day plus stavudine (d4T) twice a day with taking ddI twice a day plus d4T twice a day. This study also examines the safety of giving ddI with d4T in the short-term.

PRIMARY: To compare the virologic activity (quantitative RNA PCR, quantitative PBMC) of the combination of nevirapine and zidovudine (AZT) versus AZT alone after 3 and 6 months of treatment. To compare the effects of these two regimens on CD4 T-cell count and percentage. SECONDARY: To compare and evaluate other markers of immunologic and virologic activity in patients receiving nevirapine/AZT versus AZT alone. To compare the effects of the two regimens on clinical signs and symptoms. To evaluate the safety and tolerance of the two regimens.

PRIMARY: To compare the effect of nevirapine versus placebo alone or in combination with zidovudine (AZT) on CD4 T-cell count and percentage after 3 and 6 months of treatment. To evaluate the safety and tolerance of nevirapine alone or in combination with AZT. SECONDARY: To compare the effects of the various treatment combinations on virologic and immunologic markers.

To evaluate the safety and tolerability of four doses of oral vesnarinone in patients with advanced HIV disease.