NCT01967940

Efficacy of Tenofovir Alafenamide Versus Placebo Added to a Failing Regimen Followed by Treatment With Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide Plus Atazanavir in HIV-1 Positive, Antiretroviral Treatment-Experienced Adults

A Phase 3, Two-Part Study to Evaluate the Efficacy of Tenofovir Alafenamide Versus Placebo Added to a Failing Regimen Followed by Treatment With Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide Plus Atazanavir in HIV-1 Positive, Antiretroviral Treatment-Experienced Adults

• Status: Completed
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 55 (actual)
• Sponsor: Gilead Sciences · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The primary objective of this study is to evaluate the efficacy of tenofovir alafenamide (TAF) versus placebo, each administered with the existing, failing antiretroviral (ARV) regimen. There are 2 parts to this study: Part 1 and Part 2. Part 1 consists of 2 cohorts, starting with a sentinel cohort, in which participants will be enrolled to receive open-label TAF in addition to their current failing ARV regimen. This cohort will then be followed by a randomized, double-blind, cohort to compare the addition of TAF or placebo in HIV-1 positive adults who are failing their current ARV regimen. In Part 2, all participants who complete Part 1 of the study will discontinue their failing ARV regimen and TAF or placebo for a 14-day washout period. Following the washout period, all participants who received TAF in Part 1 and have a \> 0.5 log10 decline in HIV-1 RNA will receive elvitegravir/cobicistat/emtricitabine/tenofovir alafenamide (E/C/F/TAF) single-tablet regimen (STR) plus atazanavir (ATV) once daily for 48 weeks. Participants who received TAF who have a ≤ 0.5 log10 decline in HIV-1 RNA will be discontinued from the study and will not be eligible to continue into Part 2 of the study. All participants who received placebo in Part 1 will be eligible to participate in Part 2 regardless of their viral load change. After completion of Part 2, all participants will be eligible to continue to receive E/C/F/TAF plus ATV in the extension phase until E/C/F/TAF becomes commercially available, or until Gilead Sciences terminates development of E/C/F/TAF in the applicable country.

Conditions

• HIV
• HIV Infections
• Acquired Immunodeficiency Syndrome

Interventions

Type	Name	Description
DRUG	TAF	25 mg tablet administered orally once daily with food
DRUG	Placebo	Tablets to match TAF administered orally once daily with food
DRUG	E/C/F/TAF	150/150/200/10 mg STR administered orally once daily with food
DRUG	Current failing ARV regimen	Participants will continue taking their current ARV regimen as prescribed in Part 1.
DRUG	ATV	300 mg tablet administered orally once daily.

Timeline

• Start date: 2013-10-25
• Primary completion: 2015-05-21
• Completion: 2017-07-31
• First posted: 2013-10-23
• Last updated: 2018-11-16
• Results posted: 2017-06-12

Locations

15 sites across 5 countries: United States, Dominican Republic, Russia, Thailand, Uganda

Regulatory

• FDA-regulated drug study