Study to Evaluate the Safety and Efficacy of E/C/F/TAF Versus E/C/F/TDF in HIV-1 Positive, Antiretroviral Treatment-Naive Adults

Trial ID or NCT#



not recruiting iconNOT RECRUITING


The primary objective of this study is to evaluate the efficacy of elvitegravir/cobicistat/emtricitabine/tenofovir alafenamide (E/C/F/TAF) fixed-dose combination (FDC) versus elvitegravir/cobicistat/emtricitabine/tenofovir disoproxil fumarate (E/C/F/TDF) in HIV-1 positive, antiretroviral treatment-naive adults.

Official Title

A Phase 3, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide Versus Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Disoproxil Fumarate in HIV-1 Positive, Antiretroviral Treatment-Naïve Adults

Eligibility Criteria

Ages Eligible for Study: Older than 18 Years
Sexes Eligible for Study: All
Accepts Healthy Volunteers: No
Inclusion Criteria:
  1. - Ability to understand and sign a written informed consent form, which must be obtained prior to initiation of study procedures - Plasma HIV-1 RNA levels ≥ 1,000 copies/mL at screening - No prior use of any approved or investigational antiretroviral drug for any length of time, except the use for pre-exposure prophylaxis (PREP), or post-exposure prophylaxis (PEP) up to 6 months prior to screening - Screening genotype report must show sensitivity to elvitegravir, emtricitabine, tenofovir DF - Normal electrocardiogram (ECG) - Estimated glomerular filtration rate (eGFR) ≥ 50 mL/min according to the Cockcroft-Gault formula for creatinine clearance - Hepatic transaminases (AST and ALT) ≤ 5 × upper limit of normal (ULN) - Total bilirubin ≤ 1.5 mg/dL, or normal direct bilirubin - Adequate hematologic function - Serum amylase ≤ 5 × ULN - Males and females of childbearing potential must agree to utilize highly effective contraception methods or be non-heterosexually active or practice sexual abstinence from screening throughout the duration of study treatment and for 30 days following the last dose of study drug - Females who utilize hormonal contraceptive as one of their birth control methods must have used the same method for at least three months prior to study dosing - Females who have stopped menstruating for ≥ 12 months but do not have documentation of ovarian hormonal failure must have a serum follicle stimulating hormone (FSH) level at screening within the post-menopausal range based on the Central Laboratory reference range - Age ≥ 18 years Key
Exclusion Criteria:
  1. - A new AIDS-defining condition diagnosed within the 30 days prior to screening - Hepatitis B surface antigen (HBsAg) positive - Hepatitis C antibody positive - Individuals experiencing decompensated cirrhosis - Females who are breastfeeding - Positive serum pregnancy test - Have an implanted defibrillator or pacemaker - Current alcohol or substance use judged by the Investigator to potentially interfere with study compliance - History of malignancy within the past 5 years or ongoing malignancy other than cutaneous Kaposi's sarcoma, basal cell carcinoma, or resected, noninvasive cutaneous squamous carcinoma - Active, serious infections (other than HIV-1 infection) requiring parenteral antibiotic or antifungal therapy within 30 days prior to baseline - Any other clinical condition or prior therapy that, in the opinion of the Investigator, would make the individual unsuitable for the study or unable to comply with dosing requirements - Participation in any other clinical trial (including observational trials) without prior approval - Receiving ongoing therapy with drugs not to be used with elvitegravir, cobicistat, emtricitabine, tenofovir DF, and TAF or participants with any known allergies to the excipients of E/C/F/TDF or E/C/F/TAF Note: Other protocol defined Inclusion/Exclusion criteria may apply.


Philip Grant
Philip Grant
Positive care doctor, Infectious disease doctor
Clinical Associate Professor, Medicine - Infectious Diseases
Andrew Zolopa

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Debbie Slamowitz