Phase 3, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Stribild Versus Atripla in Human Immunodeficiency Virus, Type 1 (HIV-1) Infected, Antiretroviral Treatment-Naive Adults

This study has been completed.
Information provided by (Responsible Party):
Gilead Sciences Identifier:
First received: March 17, 2010
Last updated: September 12, 2014
Last verified: September 2014
Results First Received: September 20, 2012  
Study Type: Interventional
Study Design: Allocation: Randomized;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Parallel Assignment;   Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor);   Primary Purpose: Treatment
Conditions: HIV
HIV Infections
Interventions: Drug: Stribild
Drug: Atripla

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
Participants were enrolled at 97 sites in the United States and 5 sites in Puerto Rico. The first participant was screened on 16 March 2010. The last participant observation for the Week 48 analysis was on 10 August 2011.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
917 participants were screened; 707 were randomized (353 to the Stribild group and 354 to the Atripla group) of which 66.5% (470) had screening HIV-1 ribonucleic acid (RNA) ≤ 100,000 copies/mL. A total of 700 randomized participants received at least 1 dose of study medication and comprised the safety and intent-to treat (ITT) analysis sets.

Reporting Groups
Stribild Double-blind Stribild (elvitegravir [EVG] 150 mg/GS-9350 [cobicistat; COBI] 150 mg/emtricitabine [FTC] 200 mg/tenofovir disoproxil fumarate [TDF] 300 mg) once daily (QD) and placebo to match Atripla once daily prior to bedtime (QHS)
Atripla Double-blind Atripla (efavirenz [EFV] 150 mg/FTC 200 mg/TDF 300 mg) QHS and placebo to match Stribild QD

Participant Flow:   Overall Study
    Stribild     Atripla  
STARTED     348     352  
COMPLETED     0     0  
NOT COMPLETED     348     352  
Adverse Event                 12                 18  
Death                 1                 1  
Pregnancy                 1                 0  
Lack of Efficacy                 5                 4  
Physician Decision                 1                 0  
Withdrawal by Subject                 3                 5  
Lost to Follow-up                 10                 12  
Participant Noncompliance                 3                 6  
Protocol Violation                 1                 0  
Subjects Still on Study Treatment                 311                 306  

  Baseline Characteristics

  Outcome Measures
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1.  Primary:   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 ]

2.  Secondary:   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 ]

3.  Secondary:   The Change From Baseline in Cluster Determinant 4 (CD4) Cell Count at Week 48   [ Time Frame: Baseline to Week 48 ]

4.  Secondary:   The Percentage of Participants With HIV-1 RNA < 50 Copies/mL   [ Time Frame: Week 48 ]

  Serious Adverse Events

  Other Adverse Events

  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
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