The HIV integrase inhibitor, raltegravir (RAL), which was recently approved by the FDA, has been shown in several trials to be highly effective. The purpose of this trial is to estimate the viral load decay rate in treatment-naive HIV infected participants receiving RAL and emtricitabine/tenofovir disoproxil fumarate (FTC/TDF).
Recent data suggests that early virologic response to HIV interventions may be predictive of long-term virologic outcomes. Defining early decay in viral load through carefully performed studies of viral dynamics may be a useful tool for assessing the likely outcome of long-term treatment. It may also be a useful screening tool to define which combinations should be studied further. In this trial, the viral load decay rate will be estimated in HIV infected, treatment-naive participants receiving RAL and FTC/TDF. This study will last approximately 72 weeks. All participants will take RAL and FTC/TDF for 72 weeks. RAL will be provided by the study. FTC/TDF will not be provided. This study will consist of 16 study visits. These visits will occur at study entry, Days 2, 7, 10, 14, 21, 28, and 56, and Weeks 12, 16, 20, 24, 36, 48, 60, and 72. Blood collection and pharmacokinetic studies will occur at all study visits. Self-reported adherence assessments will be submitted at each visit. A targeted physical exam will occur at most visits. Liver function tests and urine collection will occur at select visits. Pregnancy tests will occur whenever pregnancy is suspected.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
40
400 mg tablet taken orally twice daily
Fixed dose tablet containing 200 mg emtricitabine and 300 mg tenofovir disoproxil fumarate taken once daily. FTC/TDF will not be provided by the study and must be obtained by the particpant's health care provider.
UCSD Antiviral Research Center CRS
San Diego, California, United States
University of Colorado Hospital CRS
Aurora, Colorado, United States
Viral load decay rates
Time frame: Through Day 56
Viral load decay rates
Time frame: From Weeks 24 to 72
Proportion of participants with a viral load less than 50 copies/ml
Time frame: At Weeks 24, 48, and 72
Safety and tolerability. More information on this criterion can be found in the protocol.
Time frame: Throughout study
CD4 and CD8 count
Time frame: Throughout study
Resistance mutations to RAL, FTC, and TDF
Time frame: Throughout study
Minimum concentration (Cmin) for RAL, FTC, and TDF
Time frame: Throughout study
Changes in viral load
Time frame: At Day 7
Self-reported adherence
Time frame: Throughout study
Cell-associated proviral DNA, LTR circular DNA, and integrated proviral DNA
Time frame: Throughout study
Viral load
Time frame: From Week 24 to Week 72
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