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
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ClinicalTrials.gov Identifier: NCT03110380 |
Recruitment Status :
Completed
First Posted : April 12, 2017
Results First Posted : November 20, 2019
Last Update Posted : January 11, 2022
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Condition or disease | Intervention/treatment | Phase |
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HIV-1-infection | Drug: B/F/TAF Drug: F/TAF Drug: DTG Drug: DTG Placebo Drug: F/TAF Placebo Drug: B/F/TAF Placebo | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 567 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A Phase 3, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Switching From a Regimen of Dolutegravir and Either Emtricitabine/Tenofovir Alafenamide or Emtricitabine/Tenofovir Disoproxil Fumarate to a Fixed Dose Combination of Bictegravir/ Emtricitabine/Tenofovir Alafenamide in HIV-1 Infected Subjects Who Are Virologically Suppressed |
Actual Study Start Date : | June 12, 2017 |
Actual Primary Completion Date : | December 4, 2018 |
Actual Study Completion Date : | February 10, 2021 |

Arm | Intervention/treatment |
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Experimental: B/F/TAF
Bictegravir/emtricitabine/tenofovir alafenamide (B/F/TAF) fixed-dose combination (FDC) tablet + dolutegravir (DTG) placebo tablet + emtricitabine/tenofovir alafenamide (F/TAF) placebo tablet administered without regard to food for at least 48 weeks.
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Drug: B/F/TAF
50/200/25 mg FDC tablet(s) administered orally once daily
Other Names:
Drug: DTG Placebo Tablet(s) administered orally once daily Drug: F/TAF Placebo Tablet(s) administered orally once daily |
Active Comparator: DTG + F/TAF
DTG 50 mg tablet + F/TAF FDC tablet + B/F/TAF placebo tablet administered without regard to food for at least 48 weeks.
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Drug: F/TAF
200/25 mg FDC tablet(s) administered orally once daily
Other Name: Descovy® Drug: DTG 50 mg tablet(s) administered orally once daily
Other Name: Tivicay® Drug: B/F/TAF Placebo Tablet(s) administered orally once daily |
Experimental: Open-label Phase B/F/TAF from B/F/TAF
Participants who received B/F/TAF in double-blind phase and from a country where B/F/TAF was not available were given the option to receive B/F/TAF orally once daily for up to 96 weeks in the open-label extension phase.
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Drug: B/F/TAF
50/200/25 mg FDC tablet(s) administered orally once daily
Other Names:
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Experimental: Open-label Phase B/F/TAF from DTG + F/TAF
Participants who received DTG + F/TAF in double-blind phase and from a country where B/F/TAF was not available were given the option to receive B/F/TAF orally once daily for up to 96 weeks in the open-label extension phase.
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Drug: B/F/TAF
50/200/25 mg FDC tablet(s) administered orally once daily
Other Names:
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- Percentage of Participants With HIV-1 RNA ≥ 50 Copies/mL at Week 48 as Defined by the US FDA-Defined Snapshot Algorithm [ Time Frame: Week 48 ]The percentage of participants with HIV-1 RNA ≥ 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
- Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 48 as Defined by the US FDA-Defined Snapshot Algorithm [ Time Frame: Week 48 ]The percentage of participants achieving HIV-1 RNA < 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
- Change From Baseline in CD4+ Cell Count at Week 48 [ Time Frame: Baseline; Week 48 ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
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Currently receiving an ARV regimen of DTG+F/TAF or DTG+F/TDF for the following minimum time periods:
- ≥ 6 months (if there is documented or suspected nucleoside/nucleotide reverse transcriptase inhibitor (NRTI) resistance prior to the screening visit)
- ≥ 3 months (if there is no documented or suspected NRTI resistance prior to the screening visit)
- Documented plasma HIV-1 ribonucleic acid (RNA) < 50 copies/mL during treatment with DTG+F/TAF or DTG+F/TDF (for a minimum period of ≥ 6 or ≥ 3 months, as applicable) preceding the screening visit
- Plasma HIV-1 RNA levels < 50 copies/mL at screening visit
- Estimated Glomerular Filtration Rate (eGFR) ≥ 30 mL/min according to the Cockcroft-Gault formula for creatinine clearance
- No documented resistance to integrase stand transfer inhibitors (INSTIs) or confirmed virologic failure
- Eligible adults with chronic hepatitis B virus (HBV) and/or hepatitis C virus (HCV) infection are permitted to enroll
NOTE: Other protocol defined Inclusion/ Exclusion criteria may apply.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03110380

Study Director: | Gilead Study Director | Gilead Sciences |
Documents provided by Gilead Sciences:
Responsible Party: | Gilead Sciences |
ClinicalTrials.gov Identifier: | NCT03110380 |
Other Study ID Numbers: |
GS-US-380-4030 2017-000308-17 ( EudraCT Number ) |
First Posted: | April 12, 2017 Key Record Dates |
Results First Posted: | November 20, 2019 |
Last Update Posted: | January 11, 2022 |
Last Verified: | December 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Qualified external researchers may request IPD for this study after study completion. For more information, please visit our website at https://www.gilead.com/science-and-medicine/research/clinical-trials-transparency-and-data-sharing-policy |
Supporting Materials: |
Study Protocol Statistical Analysis Plan (SAP) |
Time Frame: | 18 months after study completion |
Access Criteria: | A secured external environment with username, password, and RSA code. |
URL: | https://www.gilead.com/science-and-medicine/research/clinical-trials-transparency-and-data-sharing-policy |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Dolutegravir Emtricitabine tenofovir alafenamide HIV Integrase Inhibitors Integrase Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action |
Anti-HIV Agents Anti-Retroviral Agents Antiviral Agents Anti-Infective Agents Reverse Transcriptase Inhibitors Nucleic Acid Synthesis Inhibitors |