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Safety and Effectiveness of TFV 1% Gel, TDF Tablets, and FTC/TDF Tablets in Preventing HIV in Women

HIV Infections Clinical Trial

Official title:
Phase 2B Safety and Effectiveness Study of Tenofovir 1% Gel, Tenofovir Disproxil Fumarate Tablet and Emtricitabine/Tenofovir Disoproxil Fumarate Tablet for the Prevention of HIV Infection in Women

Clinical Trial Summary

A new approach to HIV prevention currently being studied includes the use of microbicides, substances that kill microbes. Tenofovir disoproxil fumarate (TDF) and emtricitabine/tenofovir disoproxil fumarate (FTC/TDF) are oral, FDA-approved, anti-HIV drugs, and tenofovir gel is an experimental microbicide. The purpose of this study is to determine the safety and effectiveness of daily tenofovir 1% gel compared to a vaginal placebo gel, and the safety and effectiveness of oral TDF and oral FTC/TDF compared to an oral placebo in preventing HIV infection among women at risk for sexually transmitted infections.

Clinical Trial Description

It is necessary to monitor both the adherence and blood levels of microbicides in order to gauge its efficacy in a study population. Utilizing an experimental microbicide (tenofovir gel) and anti-HIV drugs (TDF, FTC/TDF), this study will measure the effectiveness and safety to and blood levels of the three interventions in three regimens given to HIV uninfected women. The expected duration of participation for each participant ranges from a minimum of 12 months to a maximum of 38 months. Study participants will be randomly assigned into one of five study groups, each with a different regimen. Group 1 participants will take one TDF tablet daily and one FTC/TDF placebo tablet daily. Group 2 participants will take one TDF placebo tablet daily and one FTC/TDF tablet daily. Group 3 participants will take one TDF placebo tablet daily and one FTC/TDF placebo tablet daily. Group 4 participants will apply tenofovir 1% gel vaginally once daily. Group 5 participants will apply tenofovir 1% placebo gel vaginally once daily. Study visits will occur every 28 days after enrollment. Medical history, a physical exam, behavioral and adherence assessment, urine and blood collection, and counseling will occur at all visits. Blood will also be collected and archived for future research at select visits. Pharmacokinetic studies will occur at some visits. A pap smear will occur at select visits. Some participants may have hair samples collected on an optional basis at study visits every 2 months. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00705679
Study type Interventional
Source National Institute of Allergy and Infectious Diseases (NIAID)
Contact
Status Completed
Phase Phase 2
Start date August 2009
Completion date August 2012
View Details
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