Study to Evaluate Switching From a TDF-Containing Combination Regimen to a TAF-Containing Fixed Dose Combination (FDC) in Virologically-Suppressed, HIV-1 Positive Participants
HIV, HIV Infections

About this trial
This is an interventional treatment trial for HIV focused on measuring HIV, HIV 1 Infected, Virologically-Suppressed
Eligibility Criteria
Key Inclusion Criteria:
- Ability to understand and sign a written informed consent form, which must be obtained prior to initiation of study procedures
- Currently receiving antiretroviral therapy consisting of E/C/F/TDF, EFV/FTC/TDF, RTV+ATV+FTC/TDF, or COBI+ATV+FTC/TDF for ≥ 6 consecutive months preceding the final visit in their earlier study
- Completion of the Week 144 visit in studies GS-US-236-0102, GS-US-236-0103, GS-US-216-0114, or completion of the Week 96 visit in study GS-US-264-0110 (only participants on an EFV-based regimen), or completion of studies GS-US-236-0104, GS-US-216-0105
- Plasma human immunodeficiency virus type 1-ribonucleic acid (HIV-1 RNA) concentrations at undetectable levels for at least 6 consecutive months prior to the screening visit and have HIV RNA < 50 copies/mL at the screening visit
- Normal echocardiograph (ECG)
- Estimated glomerular filtration rate (GFR) ≥ 50 mL/min according to the Cockcroft-Gault formula for creatinine clearance
- Hepatic transaminases (aspartate aminotransferase [AST] and alanine aminotransferase [ALT]) ≤ 5 × upper limit of the normal range (ULN)
- Direct bilirubin ≤ 1.5 x ULN
- Adequate hematologic function
- Serum amylase ≤ 5 × ULN
- 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 12 weeks following the last dose of study drug if receiving EFV/FTC/TDF regimen, and 30 days for those assigned to all other regimens.
- Female participants 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
- Female participants 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
Key Exclusion Criteria:
- A new acquired immunodeficiency syndrome (AIDS)-defining condition diagnosed within the 30 days prior to screening
- Hepatitis B surface antigen position
- Hepatitis C antibody positive
- Participants 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 subject 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 subject unsuitable for the study or unable to comply with dosing requirements
- Participation in any other clinical trial without prior approval from the sponsor is prohibited while participating in this trial
- Participants receiving ongoing therapy with drugs not to be used with elvitegravir (EVG), COBI, FTC, TDF, ATV, RTV, EFV, and TAF or participants with any known allergies to the excipients of E/C/F/TDF, E/C/F/TAF, EFV/FTC/TDF, ATV, COBI, RTV, or FTC/TDF
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Sites / Locations
- University of Alabama at Birmingham
- Southwest Center for HIV/AIDS
- Spectrum Medical Group
- Health for Life Clinic PLLC
- AHF Research Center
- Michael Keith Wensley, MD, Inc., A Medical Corporation
- Living Hope Clinical Foundation
- Kaiser Permanente
- Jeffrey Goodman Special Care Clinic
- Peter J Ruane, MD, Inc
- Anthony Mills MD Inc
- Orange Coast Medical Group
- Alameda County Medical Center
- East Bay AIDS Center
- Stanford University
- University of California, Davis Medical Center
- Kaiser Permanente Medical Group
- La Playa Medical Group and Clinical Research
- Metropolis Medical Group
- Kaiser Permanente Medical Center, Clinical Trials Unit
- Kaiser Permanente Hospital
- Apex Research LLC
- Greenwich Hospital
- Yale University HIV Clinical Trials Program
- Dupont Circle Physicians Group
- Whitman Walker Clinic
- Capital Medical Associates, PC
- George Washington University Medical Faculty Associates
- Therafirst Medical Center
- Broward Health/Comprehensive Care Center
- Gary J. Richmond,M.D.,P.A.
- Midway Immunology and Research Center
- Wohlfeiler, Piperato and Associates, LLC
- The Kinder Medical Group
- Orlando Immunology Center
- IDOCF/ Value Health MD, LLC
- University of South Florida HIV Clinical Research Unit / Hillsborough County Health Department
- Infectious Disease Research Institute Inc.
- St. Joseph's Comprehensive Research Institute
- AIDS Research Consortium of Atlanta
- Atlanta ID Group, PC
- Infectious Disease Specialists of Atlanta
- Mercer University School of Medicine
- University of Hawaii - Hawaii Center for AIDS
- Ruth M. Rothstein CORE Center
- Howard Brown Health Center
- NorthStar Medical Center
- Community Research Initiative of New England
- The Research Institute
- Baystate Infectious Diseases Clinical Research
- Be Well Medical Center
- Henry Ford Health System
- Hennepin County Medical Center
- Central West Clinical Research
- Saint Louis University
- Southampton Healthcare
- ID Care
- Saint Michaels Medical Center
- South Jersey Infectious Disease
- SouthWest CARE Center
- Upstate ID Association
- Albany Medical College
- Jacobi Medical Center
- Montefiore Medical Center - AIDS Center
- New York Hospital Queens
- North Shore University Hospital, Divison of Infectious Diseases
- Greiger Clinic
- Beth Israel Medical Center- Division of Infectious Diseases
- Chelsea Village Medical, PC
- Ricky K. Hsu, MD
- University of NC AIDS Clinical Trials Unit
- Carolinas Medical Center-Myers Park
- Duke University Health System
- East Carolina University
- Rosedale Infectious Diseases
- Summa Health System
- University of Pennsylvania
- Thomas Jefferson University
- Palmetto Health Richland
- AIDS Arms, Inc./ Peabody Health Center
- Southwest Infectious Disease Clinical Research, Inc.
- Tarrant County Infectious Disease Associates
- Garcia's Family Health Group
- Therapeutic Concepts, P.A.
- Gordon E. Crofoot MD PA
- Research Access Network
- DCOL Center for Clinical Research
- Clinical Alliance for Research & Education, Infectious Diseases (CARE-ID)
- Peter Shalit, M.D.
- Premier Clinical Research
- Medical College of Wisconsin
- East Sydney Doctors
- Holdsworth House Medical practice
- St Vincent's Hospital, Sydney
- Taylor Square Private Clinic
- Albion Street Centre
- Melbourne Sexual Health Clinic
- Alfred Hospital
- Northside Clinic
- Prahran Market Clinic
- Medizinische Universität Graz
- Medizinische Universitat Wien
- SMZ Baumgartner Hoehe - Otto-Wagner-Spital
- CHU Saint-Pierre University Hospital
- Hôpital Universitaire Erasme - ULB
- Instituto De Pesquisa Clinica Evandro Chagas - Fundação Oswaldo Cruz
- Faculdade de Medicina do ABC
- São Paulo Secretaria da Saúde - Instituto De Infectologia Emilio Ribas
- São Paulo Secretaria da Saúde - Centro de Referência e Treinamento em DST/AIDS
- Ubc Downtown I.D. Clinic
- Winnipeg Regional Health Authority - Health Sciences Centre Winnipeg
- Ottawa Hospital
- Sunnybrook Health Sciences Centre
- Maple Leaf Research
- University Health Network, Toronto General Hospital
- Clinique medicale l'Actuel
- Clinique Medicale du Quartier Latin
- Clinique OPUS
- McGill University Health Centre (MUHC) - Montral Chest Institute
- Epidemiklinikken 5112, Rigshospitalet
- Instituto Dominicano de Estudios Virologicos - IDEV
- Hôpital de La Croix Rousse
- CHU Hotel Dieu
- Archet 1 CHU de Nice - 6ème Niveau
- Hôpital Saint Louis
- Hopital Saint Antoine
- Bichat Hospital
- Centre Hospitalier de Tourcoing
- EPIMED GmbH
- University of Bonn
- Center for HIV and Hepatogastroenterology
- Infektio Research GmbH / Infektiologikum Frankfurt
- Universitätsklinikum Frankfurt
- Universitatsklinikum Freiburg
- ICH Study Center Hamburg
- University Medical Center Hamburg-Eppendorf, Infectious Diseases Unit
- University of Cologne, Department of Internal Medicine
- MUC Research GmbH
- Azienda Ospedaliera Luigi Sacco 1° Divisione Malattie Infettive
- Fondazione Centro San Raffaele del Monte Tabor
- Istituto Nazionale Malattie Infettive "Lazzaro Spallanzani" IRCCS
- Comprensorio Amedeo Di Savoia Birago Di Vische
- Antiguo Hospital Civil de Guadalajara "Fray Antonio Alcalde"
- Onze Lieve Vrouwe Gasthuis, Afdeling Infectieziekten
- Erasmus MC
- Hospital de Santa Maria
- Servico De Doencas Infecciosas - Hospital De Sao Joao
- Clinical Research Puerto Rico
- HOPE Clinical Research
- VA Caribbean Healthcare System
- Hospital Universitari De Bellvitge
- Hospital Universitario La Paz
- Hospital Virgen del Rocio
- Södersjukhuset
- Universitätsklinik für Infektiologie, Universitätsspital Bern
- Centre Hospitalier Universitaire Vaudois
- University Hospital of Zurich
- HIV-NAT, Thai Red Cross AIDS Research Center and Faculty of Medicine Chulalongkorn University
- Ramathibodi Hospital, Mahidol University
- Siriraj HospitalDepartment of Preventive and Social Medicine, Faculty of Medicine
- Maharaj Nakorn Chiang Mai University, Faculty of Medicine, Department of Medicine
- Khon Kaen University
- Brighton and Sussex University Hospitals NHS Trust
- Barts and the London NHS Trust
- Chelsea and Westminster Hospital Foundation Trust
- Courtyard Clinic, St. Georges Hospital
- North Manchester General Hospital
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
E/C/F/TAF
Stay on Baseline Treatment Regimen (SBR)
Randomized Phase: Elvitegravir/cobicistat/emtricitabine/tenofovir alafenamide (E/C/F/TAF) for up to 96 weeks. Extension Phase: After completing 96 weeks of randomized treatment, all participants will be given the opportunity to receive open-label E/C/F/TAF until it becomes commercially available, or until Gilead elects to terminate the development of E/C/F/TAF.
Randomized Phase: Participants stayed on their baseline emtricitabine (FTC)/tenofovir disoproxil fumarate (TDF)-containing regimen E/C/F/TDF; efavirenz (EFV)/FTC/TDF; ritonavir (RTV)-boosted atazanavir (ATV)+FTC/TDF; or cobicistat (COBI-boosted ATV+FTC/TDF) administered according to prescribing information for up to 96 weeks. Extension Phase: After completing 96 weeks of randomized treatment (SBR), all participants will be given the opportunity to receive open-label E/C/F/TAF until it becomes commercially available, or until Gilead elects to terminate the development of E/C/F/TAF.