Active clinical trials for "HIV Infections"

A single dose escalation study to determine the safety, tolerability, and pharmacokinetic profile of intramuscular and subcutaneous injections of GSK1265744 long acting parenteral (LAP) in healthy subjects. This study consists of a screening visit, a single injection, and follow-up evaluations for a minimum of 12 weeks following the injection.

The purpose of the study is to compare the pharmacokinetics and bioequivalence of atazanavir in a fixed-dose combination with cobicistat with that of atazanavir coadministered with cobicistat as single agents.

The purpose of this study is to determine if there is an interaction in healthy subjects taking BMS-663068 with Darunavir/Ritonavir and/or Etravirine.

Approximately 21% of HIV infections in the U.S. are undiagnosed, but only about 40% of all adults have been tested. Thus, late diagnosis of HIV is common, and, furthermore, treatment delays and disruptions are widespread. Heterosexuals at high risk (HHR) are significantly less likely to test for HIV, are more likely to be diagnosed with HIV late, and experience serious barriers to entering care compared to other groups. The investigators research team has studied HHR in New York City (NYC) as part of the CDC's National HIV Behavioral Surveillance (NHBS) studies. The investigators found an HIV prevalence rate of 7.4% among HHR in NYC, and only 6% of these infections had been previously diagnosed. Further, in central Brooklyn, 10% were newly diagnosed with HIV. The proposed study will use NHBS methodology to target HHR in central Brooklyn. The primary goal of the proposed study is to evaluate the efficacy of a peer-driven intervention (PDI) to seek, test, treat and retain HHR. The investigators will also compare the effectiveness of two sampling methods to reach HHR: Respondent-driven sampling (a peer-based approach) versus venue-based sampling (a location-based approach). The two main study hypotheses are: (H1): Participants recruited by respondent-driven sampling (RDS) will be more likely to test positive for HIV compared to those recruited via venue-based sampling (VBS). H2): Participants in the "Test and Treat: phase of the peer-driven intervention (all of whom will be HIV-infected) will show a shorter time to an HIV clinical appointment, a shorter time to starting HIV medication (when medically indicated), higher rates of viral load suppression, and higher rates of retention in care compared to those in the control arm.

Dolutegravir (DTG, GSK1349572) is a next-generation integrase inhibitor (INI) currently in phase 3 clinical trials for human immunodeficiency virus (HIV). Fixed-dose combinations (FDCs) have greatly simplified the treatment of patients with HIV. While Atripla (an FDC of tenofovir (TDF), emtricitabine (FTC) and efavirenz (EFV)) has become the preferred first line regimen due in large part to its convenient presentation as a full treatment regimen in a single product, other options are needed. A fixed-dose combination of DTG/abacavir (ABC)/lamivudine (3TC) is one such opportunity. This is a single-center, randomized, open-label, 3-period crossover study in healthy adult subjects to evaluate the single-dose relative bioavailability of two experimental oral DTG 50 mg/ABC 600 mg/3TC 300 mg FDC tablet formulations compared to co-administration of the separate tablet formulations (DTG 50 mg tablet and EPZICOM), with each dose administered in the fasted state. Approximately 18 subjects will be enrolled and randomized to one of 6 different treatment sequences. There will be a screening visit within 30 days prior to the first dose of study drug and a follow up visit within 7-14 days after the last dose. There will be a 7 day washout between doses in each treatment period. The following PK parameters for DTG, ABC and 3TC will be measured: area under the concentration curve from time zero (pre-dose) extrapolated to infinite time (AUC(0-infinity)), Area under the concentration-time curve from time zero (pre-dose) to the time of the last quantifiable concentration (AUC (0-t)), maximum observed concentration (Cmax), lag time before observation of drug concentrations (tlag), time of occurrence of Cmax (tmax), terminal phase half-life (t½), apparent clearance following oral dosing (CL/F) and apparent terminal phase volume of distribution (Vz/F).

This is a cluster randomized trial to evaluate the effectiveness of integrated care centers (ICC) to improve access to HIV testing, prevention services, and treatment among high-risk populations of injection drug users (IDU) and men who have sex with men (MSM) in India. We will collect baseline ethnographic and survey data from approximately 27 IDU or MSM sites in India. We will use baseline data to select 22 sites for the trial (12 IDU and 10 MSM) and to stratify sites according to key baseline characteristics. We will perform stratified randomization to assign sites to either the ICC intervention or to standard services. ICCs, which will be either IDU or MSM-focused, will provide an accepting atmosphere in which members of vulnerable groups can drop-in, receive rapid HIV voluntary counselling and testing, risk reduction counseling and services, and antiretroviral therapy. ICCs will be scaled-up from existing governmental or non-governmental organizations and services provided at ICCs will be supported by the National AIDS Control Organization (NACO) of India. After providing services in communities for two years, we will conduct an evaluation survey (with biological and behavioral measures) of approximately 1000 subjects in the target populations in each of the 22 study sites. Integrated care centers have the potential to improve access to HIV prevention and treatment services among vulnerable, high-risk populations.

Pre-exposure prophylaxis (PrEP) is a method of preventing HIV infection through the use of antiretroviral (ARV) medications before exposure to HIV. This study will assess the potential of MVC as a "on demand" pre-exposure prophylaxis, within a strategy for the prevention of HIV infection in men who have sex with men (MSM).

This study is a Phase I, open-label, single-sequence drug interaction study to evaluate the effect of repeated doses of GSK2248761 on the pharmacokinetics of simvastatin, atorvastatin, and rosuvastatin in healthy adult subjects. In this study, approximately 14 subjects will receive single doses of simvastatin, atorvastatin, and rosuvastatin on two occasions, once alone and once following administration of repeated doses of GSK2248761. Safety evaluations and serial PK samples will be collected during each treatment period. A follow-up visit will occur 7-14 days after the last dose of study drug.

Dolutegravir (DTG, GSK1349572 is an integrase inhibitor that is currently in Phase 3 clinical development for the treatment of human immunodeficiency virus (HIV) infection. DTG is primarily metabolized by UDP-glucuronosyltransferase (UGT1A1) with cytochrome P450 (CYP)3A4 pathway as a minor route. Corticosteroids have demonstrated induction effects on UGTs and CYP3A4. Corticosteroids are often used in HIV-infected subjects and have the potential to reduce DTG exposure due to enzyme induction when co-administered. The primary objective of this study is to determine whether concomitant prednisone administration can affect the pharmacokinetics (PK) of DTG. The study is a two part, two period, open label study. Part 1 will evaluate the effect of a high prednisone dose on DTG PK with the potential for an additional Part 2 depending on the results from Part 1. In Part 1, approximately 12 healthy subjects will receive DTG 50mg q24h for 5 days in Period 1. Subjects will then be administered DTG 50mg q24h in combination with prednisone 60mg for 5 days followed by a 5 day taper (total duration of 10 days) in Period 2. PK data of DTG will be obtained from Part 1 and used to inform decision making on the need for Part 2. If DTG exposure is reduced by more than 50% in Part 1, Part 2 will be carried out where a second cohort of subjects will receive DTG 50mg q24h DTG for 5 days in Period 1 followed by DTG 50mg q24h in combination with prednisone 20mg for 5 days followed by a 5 day taper (total duration of 10 days) in Period 2. Safety evaluations and serial PK samples for DTG will be collected during each treatment period. A follow-up visit will occur 7-14 days after the last dose of study drug. All doses of study drugs will be taken following a moderate fat meal. This study will be conducted at one center in the United States, with healthy adult male and female subjects.

Dolutegravir (DTG, GSK1349572) is a next-generation integrase inhibitor (INI) currently in phase 3 clinical trials for human immunodeficiency virus (HIV). Fixed-dose combinations (FDCs) have greatly simplified the treatment of patients with HIV. While Atripla (an FDC of tenofovir (TDF), emtricitabine (FTC) and efavirenz (EFV)) has become the preferred first line regimen due in large part to its convenient presentation as a full treatment regimen in a single product, other options are needed. A fixed-dose combination of DTG/abacavir (ABC)/lamivudine (3TC) is one such opportunity. Part A of this study will be a single-dose, two-treatment crossover pivotal bioequivalence (BE) evaluation of the DTG/ABC/3TC FDC tablet in 66 healthy subjects. The reference formulations in this trial will be the 50 mg DTG tablet that is currently being used in the Phase 3 clinical trials and the already marketed FDC tablet product EPZICOM™ (ABC 600 mg/3TC 300 mg).It is intended that the results of this pivotal bioequivalence study will show that the proposed commercial DTG/ABC/3TC FDC tablet formulation is bioequivalent to DTG plus EPZICOM administered as separate tablets. Part B of this study will evaluate the effect of a high fat meal on the FDC tablet in 12 healthy subjects that have already participated in Part A of the study. There will be a screening visit within 30 days prior to the first dose of study drug and a follow up visit within 7-14 days after the last dose. There will be a 7 day washout between doses in each treatment period. The following PK parameters for DTG, ABC and 3TC will be measured: area under the concentration curve from time zero (pre-dose) extrapolated to infinite time (AUC(0-infinity)), Area under the concentration-time curve from time zero (pre-dose) to the time of the last quantifiable concentration (AUC (0-t)), maximum observed concentration (Cmax), lag time before observation of drug concentrations (tlag), time of occurrence of Cmax (tmax), terminal phase half-life (t½), terminal elimination phase rate constant (λz), percentage of AUC obtained by extrapolation (%AUCex),apparent clearance following oral dosing (CL/F) and apparent terminal phase volume