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ClinicalTrials.gov public records Last synced Oct 6, 2026, 6:30 PM EDT

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Showing 1–24 of 44 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: placebo for emtricitabine/tenofovir Clear all
Completed Phase 3 Interventional Results available

Safety and Efficacy of E/C/F/TDF Versus RTV-Boosted ATV Plus FTC/TDF in HIV-1 Infected, Antiretroviral Treatment-Naive Women

NCT01705574
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, HIV Infections
Interventions
E/C/F/TDF, ATV, RTV, FTC/TDF, E/C/F/TDF Placebo, ATV Placebo, RTV Placebo, FTC/TDF Placebo, E/C/F/TAF
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older · Female only
Enrollment
583 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
41
States / cities
Los Angeles, California • Sacramento, California • Washington D.C., District of Columbia + 31 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2019 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Botswana TDF/FTC Oral HIV Prophylaxis Trial

NCT00448669
View directory record Official record
Conditions
HIV Infections
Interventions
Tenofovir Disoproxil Fumarate 300 mg + Emtricitabine 200 mg, Placebo Oral Tablet
Drug
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 39 Years
Enrollment
1,219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Switch to Doravirine/Islatravir (DOR/ISL) in Human Immunodeficiency Virus 1 (HIV-1) Participants Treated With Bictegravir/Emtricitabine/Tenofovir Alafenamide (BIC/FTC/TAF) (MK-8591A-018)

NCT04223791
View directory record Official record
Conditions
HIV Infection
Interventions
DOR/ISL, BIC/FTC/TAF, Placebo to BIC/FTC/TAF, Placebo to FDC DOR/ISL
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
643 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
28
States / cities
Phoenix, Arizona • Beverly Hills, California • Los Angeles, California + 24 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Switch Study to Evaluate the Safety and Efficacy of Emtricitabine/Rilpivirine/Tenofovir Alafenamide (FTC/RPV/TAF) Fixed Dose Combination (FDC) in HIV-1 Positive Adults Who Are Virologically Suppressed on Emtricitabine/Rilpivirine/Tenofovir Disoproxil Fumarate (FTC/RPV/TDF)

NCT02345252
View directory record Official record
Conditions
HIV-1 Infection
Interventions
FTC/RPV/TAF, FTC/RPV/TDF Placebo, FTC/RPV/TDF, FTC/RPV/TAF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
632 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
75
States / cities
Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 56 more
Source: ClinicalTrials.gov public record
Updated Jan 2, 2020 · Synced Oct 6, 2026, 6:30 PM EDT
Active, not recruiting Phase 2Phase 3 Interventional

Study of Oral Weekly Lepetegravir (Formerly GS-1720) and Lenacapavir Pacfosacil (Formerly GS-4182) Versus Biktarvy in People With HIV-1 Who Are Virologically Suppressed

NCT06544733
View directory record Official record
Conditions
HIV-1-Infection
Interventions
Lepetegravir, Lenacapavir pacfosacil, Placebo to Match BVY, Bictegravir/emtricitabine/tenofovir alafenamide, Lepetegravir/Lenacapavir pacfosacil FDC, Placebo to Match GS1720/GS-4182 FDC
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
675 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
35
States / cities
Birmingham, Alabama • Beverly Hills, California • Los Angeles, California + 30 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

PrEP-Pod-IVR (TDF-FTC/Placebo IVR 28 Day Crossover Study)

NCT03255915
View directory record Official record
Conditions
HIV Prevention
Interventions
Tenofovir Disoproxil Fumarate (TDF)-Emtricitabine (FTC), Placebo
Drug · Other
Lead sponsor
Oak Crest Institute of Science
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Oral Islatravir (MK-8591) Once-Monthly as Preexposure Prophylaxis (PrEP) in Men and Transgender Women Who Are at High Risk for HIV-1 Infection (MK-8591-024)

NCT04652700
View directory record Official record
Conditions
HIV Preexposure Prophylaxis
Interventions
ISL, FTC/TDF, FTC/TAF, Placebo to ISL, Placebo to FTC/TDF, Placebo to FTC/TAF
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
16 Years and older · Male only
Enrollment
494 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
15
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 11 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Safety and Efficacy of Emtricitabine and Tenofovir Alafenamide (F/TAF) Fixed-Dose Combination Once Daily for Pre-Exposure Prophylaxis in Men and Transgender Women Who Have Sex With Men and Are At Risk of HIV-1 Infection

NCT02842086
View directory record Official record
Conditions
Pre-Exposure Prophylaxis of HIV-1 Infection
Interventions
F/TAF, F/TDF, F/TAF Placebo, F/TDF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
5,399 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
54
States / cities
Beverly Hills, California • Los Angeles, California • Newport Beach, California + 38 more
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Injectable Cabotegravir Compared to TDF/FTC For PrEP in HIV-Uninfected Men and Transgender Women Who Have Sex With Men

NCT02720094
View directory record Official record
Conditions
HIV Infections
Interventions
Cabotegravir Oral Tablet, TDF/FTC tablets, Placebo for TDF/FTC tablets, Placebo for cabotegravir oral tablet, CAB LA, Placebo for CAB LA
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
4,570 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2025
U.S. locations
27
States / cities
Birmingham, Alabama • Los Angeles, California • Oakland, California + 20 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

A Study to Compare Tenofovir Disoproxil Fumarate Versus Adefovir Dipivoxil for the Treatment of HBeAg-Negative Chronic Hepatitis B

NCT00117676
View directory record Official record
Conditions
Chronic Hepatitis B
Interventions
TDF, ADV, TDF placebo, ADV placebo, FTC/TDF
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 69 Years
Enrollment
382 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2016
U.S. locations
17
States / cities
La Jolla, California • Pasadena, California • San Diego, California + 12 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2017 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Switch Study to Evaluate F/TAF in HIV-1 Infected Adults Who Are Virologically Suppressed on Regimens Containing ABC/3TC

NCT02469246
View directory record Official record
Conditions
HIV-1 Infection
Interventions
F/TAF, ABC/3TC, ABC/3TC Placebo, F/TAF Placebo, 3rd ARV agent
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
34
States / cities
Phoenix, Arizona • Beverly Hills, California • La Jolla, California + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2019 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 4 Interventional Results available

Abacavir/Lamivudine Versus Emtricitabine/Tenofovir Both In Combination With Lopinavir/Ritonavir For The Treatment Of HIV

NCT00244712
View directory record Official record
Conditions
HIV Infection
Interventions
emtricitabine/tenofovir, abacavir/lamivudine
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
688 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
72
States / cities
Phoenix, Arizona • Tucson, Arizona • Beverly Hills, California + 52 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2010 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Switching to a Fixed Dose Combination of Bictegravir/Emtricitabine/Tenofovir Alafenamide (B/F/TAF) in Human Immunodeficiency Virus Type 1 (HIV-1) Infected Adults Who Are Virologically Suppressed

NCT03110380
View directory record Official record
Conditions
HIV-1-infection
Interventions
B/F/TAF, F/TAF, DTG, DTG Placebo, F/TAF Placebo, B/F/TAF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
66
States / cities
Phoenix, Arizona • Los Angeles, California • Oakland, California + 47 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2022 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

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

NCT01797445
View directory record Official record
Conditions
HIV, HIV Infections
Interventions
E/C/F/TAF, E/C/F/TDF, E/C/F/TDF Placebo, E/C/F/TAF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
872 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
79
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 54 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2020 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Switch Study to Evaluate F/TAF in HIV-1 Positive Participants Who Are Virologically Suppressed on Regimens Containing FTC/TDF

NCT02121795
View directory record Official record
Conditions
HIV-1 Infection
Interventions
FTC/TDF, F/TAF, Allowed third antiretroviral agent, FTC/TDF Placebo, F/TAF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
668 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
57
States / cities
Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 40 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2020 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 2 Interventional Results available

A Study to Compare Tenofovir DF Versus the Combination of Emtricitabine Plus Tenofovir DF for the Treatment of Chronic Hepatitis B in Patients With Normal Alanine Aminotransferase (ALT)

NCT00507507
View directory record Official record
Conditions
Chronic Hepatitis B
Interventions
Tenofovir DF, FTC, Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 69 Years
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
10
States / cities
Los Angeles, California • San Diego, California • San Francisco, California + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 17, 2015 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate the Safety and Efficacy of Bictegravir/Emtricitabine/Tenofovir Alafenamide Versus Dolutegravir + Emtricitabine/Tenofovir Alafenamide in Human Immunodeficiency Virus (HIV-1) Infected, Antiretroviral Treatment-Naive Adults

NCT02607956
View directory record Official record
Conditions
HIV-1 Infection
Interventions
DTG, F/TAF, B/F/TAF, DTG Placebo, F/TAF Placebo, B/F/TAF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
657 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
74
States / cities
Phoenix, Arizona • Beverly Hills, California • Los Angeles, California + 53 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2022 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Study of Doravirine/Islatravir (DOR/ISL 100 mg/0.75 mg) to Evaluate the Antiretroviral Activity, Safety, and Tolerability in Treatment-Naïve Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Infection (MK-8591A-020)

NCT04233879
View directory record Official record
Conditions
HIV-1 Infection
Interventions
DOR/ISL, BIC/FTC/TAF, Placebo to BIC/FTC/TAF, Placebo to DOR/ISL
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
599 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
17
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Oral ISL QM as PrEP in Cisgender Women at High Risk for HIV-1 Infection (MK-8591-022)

NCT04644029
View directory record Official record
Conditions
HIV-I, Human Immunodeficiency Virus Type 1, Prophylaxis
Interventions
Islatravir, Placebo to FTC/TDF, FTC/TDF, Placebo to ISL
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
16 Years to 45 Years · Female only
Enrollment
730 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
13
States / cities
Birmingham, Alabama • Washington D.C., District of Columbia • Miami, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers Results available

Pre-Exposure Prophylaxis Study of Lenacapavir in Cisgender Men, Transgender Women, Transgender Men, and Gender Nonbinary People at Risk for HIV Infection

NCT04925752
View directory record Official record
Conditions
Pre-Exposure Prophylaxis of HIV Infection
Interventions
Oral Lenacapavir (LEN), F/TDF, Sub-cutaneous (SC) Lenacapavir (LEN), Placebo SC LEN, PTM F/TDF, PTM Oral LEN, F/TAF (for US participants only)
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
16 Years and older
Enrollment
3,292 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
60
States / cities
Birmingham, Alabama • Loma Linda, California • Los Angeles, California + 43 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Cobicistat-boosted Atazanavir Compared to Ritonavir-boosted Atazanavir in Combination With Emtricitabine/Tenofovir Disoproxil Fumarate in HIV-1 Infected, Antiretroviral Treatment-Naive Adults

NCT00892437
View directory record Official record
Conditions
HIV-1 Infection
Interventions
COBI, RTV, ATV, FTC/TDF, COBI placebo, RTV placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
31
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Beverly Hills, California + 23 more
Source: ClinicalTrials.gov public record
Updated Feb 15, 2016 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of Switching From Dolutegravir and ABC/3TC or ABC/DTG/3TC to B/F/TAF in HIV-1 Infected Adults Who Are Virologically Suppressed

NCT02603120
View directory record Official record
Conditions
HIV-1 Infection
Interventions
ABC/DTG/3TC, B/F/TAF, ABC/DTG/3TC Placebo, B/F/TAF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
61
States / cities
Phoenix, Arizona • Beverly Hills, California • Los Angeles, California + 48 more
Source: ClinicalTrials.gov public record
Updated Nov 12, 2020 · Synced Oct 6, 2026, 6:30 PM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of Bictegravir/Emtricitabine/Tenofovir Alafenamide Versus Dolutegravir + Emtricitabine/Tenofovir Disoproxil Fumarate in Treatment Naive, HIV-1 and Hepatitis B Co-Infected Adults

NCT03547908
View directory record Official record
Conditions
HIV-1/HBV Co-Infection
Interventions
B/F/TAF, Placebo to match DTG, Placebo to match F/TDF, DTG, F/TDF, Placebo to match B/F/TAF
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
244 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
4
States / cities
Ft. Pierce, Florida • West Palm Beach, Florida • Berkley, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2025 · Synced Oct 6, 2026, 6:30 PM EDT
Recruiting Phase 2 Interventional

Antiviral Clinical Trial for Long Covid-19

NCT06511063
View directory record Official record
Conditions
Long Covid
Interventions
tenofovir disoproxil/emtricitabine, Selzentry, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 6, 2026, 6:30 PM EDT