Study to Evaluate the Safety and Efficacy of Stribild Versus Ritonavir-Boosted Atazanavir Plus Truvada in Human Immunodeficiency Virus, Type 1 (HIV-1) Infected, Antiretroviral Treatment-Naive Adults
To evaluate the safety and efficacy of Stribild, a single tablet regimen (STR) containing fixed doses of elvitegravir (EVG)/GS-9350 (cobicistat; COBI)/emtricitabine (FTC)/tenofovir disoproxil fumarate (TDF) versus ritonavir-boosted atazanavir (ATV/r) plus the standard of care nucleoside reverse transcriptase inhibitor (NRTI) backbone FTC/TDF (Truvada). Ritonavir-boosted atazanavir + Truvada was selected as the active comparator for this study as it is a preferred protease inhibitor-based regimen in guidelines for the treatment of HIV-1 infected, antiretroviral treatment-naive adults.
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||A Phase 3, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Elvitegravir/Emtricitabine/Tenofovir Disoproxil Fumarate/GS-9350 Versus Ritonavir-Boosted Atazanavir Plus Emtricitabine/Tenofovir Disoproxil Fumarate in HIV-1 Infected, Antiretroviral Treatment-Naive Adults|
- The Percentage of Participants With Virologic Success Using the Food and Drug Administration (FDA)-Defined Snapshot Analysis as Determined by the Achievement of HIV-1 Ribonucleic Acid (RNA) < 50 Copies/mL [ Time Frame: Week 48 ] [ Designated as safety issue: No ]The percentage of participants with virologic success assessed using the FDA-defined snapshot analysis for an HIV-1 RNA cutoff of 50 copies/mL was summarized.
- The Percentage of Participants Achieving and Maintaining Confirmed HIV-1 RNA < 50 Copies/mL Using the FDA-defined Time to Loss of Virologic Response (TLOVR) Algorithm [ Time Frame: Week 48 ] [ Designated as safety issue: No ]The percentage of participants achieving and maintaining confirmed HIV-1 RNA < 50 copies/mL using the FDA-defined TLOVR algorithm was summarized.
- The Change From Baseline in Cluster Determinant 4 (CD4) Cell Count at Week 48 [ Time Frame: Baseline to Week 48 ] [ Designated as safety issue: No ]Change = Week 48 value minus baseline value.
- The Percentage of Participants With HIV-1 RNA < 50 Copies/mL [ Time Frame: Week 48 ] [ Designated as safety issue: No ]The percentage of participants with plasma HIV-1 RNA < 50 copies/mL was summarized.
|Study Start Date:||April 2010|
|Estimated Study Completion Date:||June 2014|
|Primary Completion Date:||September 2011 (Final data collection date for primary outcome measure)|
Stribild (EVG 150 mg/COBI 150 mg/FTC 200 mg/TDF 300 mg) STR + placebos to match ritonavir-boosted atazanavir (ATV/r) and Truvada once daily (QD)
|Active Comparator: ATV/r + Truvada||
Drug: ATV/r + Truvada
Atazanavir 300 mg/Ritonavir 100 mg (ATV/r) and FTC 200 mg/TDF 300 mg (Truvada) + placebo to match Stribild STR QD
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|Study Director:||Marshall Fordyce, MD||Gilead Sciences|