NCT02938520

Study to Evaluate the Efficacy, Safety, and Tolerability of Long-acting Intramuscular Cabotegravir and Rilpivirine for Maintenance of Virologic Suppression Following Switch From an Integrase Inhibitor in HIV-1 Infected Therapy Naive Participants

A Phase III, Randomized, Multicenter, Parallel-group, Open-Label Study Evaluating the Efficacy, Safety, and Tolerability of Long-Acting Intramuscular Cabotegravir and Rilpivirine for Maintenance of Virologic Suppression Following Switch From an Integrase Inhibitor Single Tablet Regimen in HIV-1 Infected Antiretroviral Therapy Naive Adult Participants

• Status: Active Not Recruiting
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 631 (actual)
• Sponsor: ViiV Healthcare · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The First Long-Acting Injectable Regimen (FLAIR) study is being conducted to establish if human immunodeficiency virus type-1 (HIV-1) infected adult participants whose virus is virologically suppressed on an integrase inhibitor single tablet regimen (INI STR) will remain suppressed after switching to a two-drug intramuscular (IM) long-acting (LA) regimen of cabotegravir (CAB) and rilpivirine (RPV). In this study, the INI STR will be limited to abacavir/dolutegravir/lamivudine (ABC/DTG/3TC). FLAIR is a Phase 3, multi-phase, randomized, open label, active-controlled, multicenter, parallel-group, non-inferiority study in HIV-1, anti-retroviral therapy (ART)-naïve adult participants. This study is designed to demonstrate the non-inferior antiviral activity of switching to a two drug CAB LA 400 mg + RPV LA 600 mg regimen every 4 weeks (Q4W: monthly) compared to remaining on ABC/DTG/3TC over 48 weeks (4 weeks oral CAB + RPV, 44 weeks LA therapy). Participants who are HLA-B\*5701 positive at Screening may enroll into the study and receive DTG plus a non-abacavir containing dual nucleoside reverse transcriptase inhibitor (NRTI) regimen. Eligible participants will enroll into the Induction Phase of the study and receive ABC/DTG/3TC for 20 weeks (Week \[-20\] to Day 1). Participants who have an HIV 1 ribose nucleic acid (RNA) \<50 copies per milliliter (c/mL) at Week (-4) will be randomized (1:1) into the Maintenance Phase at Day 1 to either continue ABC/DTG/3TC or to discontinue ABC/DTG/3TC and begin oral therapy with CAB 30 mg + RPV 25 mg once daily for approximately 4 Weeks, followed by monthly CAB LA + RPV LA injections from visit Week 4b until study completion or withdrawal. Participants who successfully complete Week 100 (without meeting study defined withdrawal criteria and who remain virologically suppressed through Week 96: HIV-1 RNA \<50 c/mL) will be given the option to switch to the LA arm in the Extension Phase (using an optional oral lead-in with CAB + RPV) or be withdrawn from the study. Participants will continue to receive injections every 4 weeks during the Extension Phase until CAB LA and RPV LA are either locally approved and commercially available, the participant no longer derives clinical benefit, the participant meets a protocol-defined reason for discontinuation, or until development of either CAB LA or RPV LA is terminated.

Conditions

• HIV Infections

Interventions

Type	Name	Description
DRUG	Cabotegravir (CAB) tablet	It is a white oval shaped film coated 30 mg tablets for oral administration. CAB Tablet is composed of cabotegravir sodium, lactose monohydrate, microcrystalline cellulose, hypromellose, sodium starch glycolate, magnesium stearate, and white film-coat.
DRUG	Rilpivirine (RPV) tablet	It is a 25 mg tablet with off-white, round, biconvex, film-coated and debossed on one side with "TMC" and the other side with "25". Each tablet contains RPV hydrochloride, and the inactive ingredients croscarmellose sodium, lactose monohydrate, magnesium stearate, polysorbate 20, povidone K30 and silicified microcrystalline cellulose.
DRUG	Cabotegravir - Injectable Suspension (CAB LA)	It is a sterile white to slightly pink suspension containing 200 mg/mL of CAB as free acid for administration by intramuscular (IM) injection. Each vial is for single-dose use containing a withdrawable volume of 2.0 mL, and does not require dilution prior to administration. CAB LA is composed of cabotegravir free acid, polysorbate 20, polyethylene glycol 3350, mannitol, and water for injection.
DRUG	Rilpivirine - Injectable Suspension (RPV LA)	It is a sterile white suspension containing 300 mg/mL of RPV as the free base. The route of administration is by intramuscular (IM) injection. Each vial contains a nominal fill of 2.0 mL, and does not require dilution prior to administration. RPV LA requires refrigeration and must be protected from light. RPV LA is composed of RPV free base, poloxamer 338, sodium dihydrogen phosphate monohydrate, citric acid monohydrate, glucose monohydrate, sodium hydroxide, water for injection.
DRUG	ABC/DTG/3TC STR - Tablet	It is a purple, biconvex, oval, tablet debossed with "572 Tri" on one side, film-coated tablet contains abacavir sulphate equivalent to 600 mg of abacavir, dolutegravir sodium equivalent to 50 mg dolutegravir, and 300 mg of lamivudine. The inactive ABC/DTG/3TC tablet ingredients include D-mannitol, magnesium stearate, microcrystalline cellulose, povidone, and sodium starch glycolate.
DRUG	DTG Tablet	It is a yellow, round, biconvex, 50 mg film-coated tablet debossed with "SV 572" on one side and "50" on the other side. Each tablet of DTG also contains the following inactive ingredients: D-mannitol, microcrystalline cellulose, povidone K29/32, sodium starch glycolate, and sodium stearyl fumarate.

Timeline

• Start date: 2016-10-27
• Primary completion: 2018-08-30
• Completion: 2029-12-31
• First posted: 2016-10-19
• Last updated: 2026-03-19
• Results posted: 2019-10-29

Locations

44 sites across 6 countries: United States, Japan, Russia, South Africa, Spain, United Kingdom

Regulatory

• FDA-regulated drug study