Switch Study to Evaluate Dolutegravir Plus Lamivudine in Virologically Suppressed Human Immunodeficiency Virus Type 1 Positive Adults (TANGO)

• Status: Active, not recruiting
• Trial end date: 2022-04-28

Summary

The aim of the study is to establish if human immunodeficiency virus type 1 (HIV-1) infected adult subjects with current virologic suppression on a ≥3-drug tenofovir alafenamide (TAF) based regimen (TBR) remain suppressed upon switching to a two-drug regimen of dolutegravir (DTG) 50 milligram (mg) + lamivudine (3TC) 300 mg. This study will also provide important information regarding the safety and subject satisfaction with this two-drug regimen. The primary objective of this trial is to demonstrate the non-inferior antiviral activity of switching to DTG + 3TC once daily compared to continuation of TBR over 48 weeks in HIV-1 infected, ART-experienced, virologically suppressed subjects. This study also will characterize the long-term antiviral activity, tolerability and safety of DTG + 3TC compared to TBR through Week 144 and characterize the long-term antiviral activity, tolerability and safety of DTG + 3TC through Week 200.

This will be a 200-week, Phase III, randomized, open-label, active-controlled, multicenter, parallel-group study. The study will include a screening phase (up to 28 days), a randomized early switch phase (Day 1 up to Week 148), a randomized late switch phase (Week 148 up to Week 200), and a continuation phase (post Week 200). Approximately 550 HIV-1 infected adults on stable TBR will be randomized 1:1 to switch to DTG + 3TC once daily for up to 200 weeks, or to continue their TBR for 148 weeks, at which time and if HIV-1 ribonucleic acid (RNA) <50 copies per milliliter (c/mL) at Week 144, these subjects will switch to DTG + 3TC up to Week 200.

• Phase: Phase 3

Details

• Lead Sponsor: ViiV Healthcare
• Collaborator: GlaxoSmithKline
• Treatments: Dolutegravir; Lamivudine