Active clinical trials for "HIV Infections"

Specific Aim: To conduct a randomized, placebo-controlled trial of extended release-naltrexone (XR-NTX) among Human Immunodeficiency Virus (HIV) infected prisoners meeting Diagnostic Statistical Manual IV (DSM-IV) criteria for opioid dependence who are transitioning from the structure of a correctional setting to the community. Hypotheses: i. XR-NTX will result in improved HIV clinical outcomes, including lower changes in HIV-1 RNA levels, higher CD4 counts and higher rates of retention in care. ii. XR-NTX will result in improved opioid treatment outcomes, including longer time to opioid relapse, lower addiction severity and lower craving for opioid. iii. XR-NTX will result in reduced drug- and sex-related HIV risk behaviors compared to the control group. iv. XR-NTX will result in decreased rates of reincarceration after 12 months of release to the community.

The purpose of this study is to compare the efficacy, safety and tolerability of darunavir/ritonavir 800/100 mg monotherapy with a triple combination therapy containing darunavir/ritonavir 800/100 mg and 2 nucleoside/nucleotide reverse transcriptase inhibitors (N[t]RTIs) in approximately 260 Human Immunodeficiency Virus-1 (HIV-1) infected patients who have been on Highly Active AntiRetroviral Therapy (HAART) medication and have a plasma Viral Load below 50 copies/mL for at least 48 weeks. Also the changes in neurocognitive function will be compared throughout the study.

This study will be conducted in approximately 468 HIV-1 infected antiretroviral therapy (ART)-naïve subjects. Subjects will be randomized 1:1 to receive dolutegravir (DTG) 50 mg once daily (approximately 234 subjects) or darunavir/ritonavir (DRV/r) 800 mg/100 mg once daily (approximately 234 subjects), each in combination with fixed-dose dual nucleoside reverse transriptase inhibitor (NRTI) therapy (either abacavir/lamivudine (ABC/3TC) or tenofovir/emtricitabine (TDF/FTC). Subjects will be stratified by screening HIV-1 RNA and background NRTI selection. The primary analysis will take place after the last subject completes 48 weeks on therapy; an additional analysis will be conducted after the last subject completes Week 96 on study.

The investigators' in vitro data suggest that Neurokinin-1 receptor antagonists like aprepitant will decrease the expression of CCR5, an essential co-receptor in the life cycle of HIV, in the surface of macrophages and lymphocytes to levels at least similar to those observed in patients heterozygous for the CCR5 32 mutation. Together with a direct potential antiviral effect this could alter disease progression in patients with HIV infection. The investigators' hypothesis is that aprepitant is safe, tolerable and has antiviral activity in HIV infected individuals. This is randomized, placebo controlled, double blind study to determine the safety and antiviral activity of aprepitant by comparing the change in HIV RNA viral load after 2 weeks of aprepitant monotherapy. 18 HIV infected males and females ≥ 18 years old who have early infection with CD4 cell counts ≥ 350 cells/mm3. Subjects will be randomized 1:1 to receive 375 mg of aprepitant (Emend®) or placebo.

A switch to a regimen consisting of ATV/RTV 300/100 mg QD + 3TC 300 mg QD in HIV-1 infected subjects in their first antiretroviral regimen and who are virologically suppressed on a regimen which consists of 2 NRTIs + any 3rd agent, is non-inferior to continue or switch to ATV/RTV 300/100 mg QD + 2 optimized NRTIs for maintenance of virological suppression.

The main objective of this clinical trial in randomizing HIV infected patients under good HIV control with tenofovir (TDF), emtricitabine (or lamivudine) plus lopinavir/ritonavir (LPV/r) into switching the regimen to raltegravir (RAL) with darunavir/ritonavir (DRV/r) or continuing the ongoing regimen to compare these two groups' estimated glomerular filtration rate (eGFR) is to investigate whether anti-HIV treatment that does not contain TDF or other reverse-transcriptase inhibitors (NTRI sparing regimen) can be protective of patients' renal functions and has the same virological efficacy in comparison with a standard treatment with TDF, or not.

The purpose of this study is to investigate the effect of steady-state concentrations of raltegravir (administered as 400 mg, twice daily) on the steady-state pharmacokinetics of TMC278 (25 mg, once daily), and vice versa. Steady state is a term that means that the drug has been given long enough so that the plasma levels will remain at about the same level with each subsequent dose. TMC278 is being investigated for the treatment of human immunodeficiency virus (HIV) infection. Raltegravir is a commercially available antiretroviral drug for treatment of HIV infection. Pharmacokinetics (PK) means how the drug is absorbed into the bloodstream, distributed in the body and eliminated from the body.

The objective of this study is to evaluate the drug-drug interaction potential between BI 201335 and concomitantly administered tenofovir which is used in treatment regimens for HIV infection and/or Hepatitis B infection. Results of this study will serve as a basis for guidance of dose adjustments or other precautionary measures when BI201335 and tenofovir are coadministered.

The purpose of this study is to compare change of brachial artery flow mediated vasodilatation using Darunavir/Ritonavir (DRV/r) 800/100 mg once daily as a monotherapy (use of a single medication) versus a triple combination therapy containing 2 nucleoside reverse transcriptase inhibitors (NRTIs) and DRV/r in Human immunodeficiency virus-1 (HIV-1) infected participants.

The purpose of this study is to investigate the safety and pharmacokinetics of KM-023 after single/multiple dosing.