Clinical trial NCT01641367
Conditions: HIV-1 Infection
Sponsor: Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Start date: 2013-02-22; Completion date: 2018-12-31
Enrollment: 545 participants; Allocation: RANDOMIZED; Intervention model: PARALLEL

Brief summary:
The study was done to:

* test a strategy of using a resistance test to choose anti-HIV drugs
* see how well combinations of new anti-HIV drugs work to lower HIV infection
* see if taking new anti-HIV drugs together is safe and tolerable
* see if text messages improve people's anti-HIV drug-taking behavior (only at sites participating in the adherence study)
* in people taking certain combinations of anti-HIV drugs with an anti-TB drug, compare how these drugs act in the body
* to see how people do after they stop having frequent clinic visits as part of a research study

Detailed description:
A5288 was an open-label phase IV, prospective interventional, strategy study in resource-limited settings (RLS) for HIV-1 infected participants with triple-class experience or resistance to nucleoside reverse transcriptase inhibitors (NRTIs), non-NRTIs (NNRTIs), and protease inhibitors (PIs) and who were failing their current regimen. The use of novel agents and contemporary clinical decision management tools that include standard genotyping and plasma HIV viral load (VL) monitoring were evaluated. The screening genotype results and antiretroviral (ARV) history were used to allocate potential participants to one of four Cohorts (A, B, C or D) and to select an associated ARV regimen based on the Cohort assignment. In brief, individuals assigned to Cohort A continued on the same PI as in their second-line regimen, with the ability to modify NRTIs. Those assigned to Cohort B who were negative for hepatitis B were randomized to receive RAL and DRV/RTV with either the best available NRTIs (Cohort B1) or ETR (Cohort B2). If they were positive for hepatitis B they were assigned to Cohort B3 and received RAL, DRV/RTV and either FTC/TDF or 3TC/TDF. Individuals assigned to Cohort C received RAL and DRV/RTV with the best available NRTIs. Those ineligible for Cohorts A, B or C were assigned to Cohort D and received the best available regimen that included study provided drugs and any locally provided drugs.

At sites where feasible and relevant, the study evaluated an adherence support intervention. This involved a randomized comparison of a cell phone-based adherence support intervention plus local standard-of-care adherence support procedures (CPI+SOC) versus the SOC adherence support procedures.

Participants enrolled to the study in Step 1. If a participant experienced a confirmed virologic failure (defined as two consecutive HIV-1 RNA measures \>= 1000 copies/mL) at/after 22 weeks on their Step 1 regimen, they had another genotype test performed and cohort/regimen selected for Step 2. With the exception of one additional visit 4 weeks after enrollment to Step 2, the visit schedule for Step 2 followed the participant's original Step 1 schedule throughout the remainder of follow up.

Participants were followed in Steps 1 and 2 until 48 weeks after the last participant was enrolled to Step 1. During the first 48 weeks after Step 1 enrollment, clinic visits occurred at weeks 4, 12, 24, 36 and 48. After week 48, visits occurred every 12 weeks for adherence, safety and efficacy measures.

Participants had a final step 1/2 visit between November 22, 2016 and February 13, 2017. At the final step 1/2 visit, participants taking RAL, ETR, or DRV who were unable to obtain these drugs locally (e.g., through local treatment programs), and were otherwise eligible, entered Step 3 and continued to receive these drugs through the study for up to 96 additional weeks. Step 3 participants were dispensed ARVs every 12 weeks and had clinical assessments every 24 weeks. The purpose of Step 3 was to assist participants with the transition back to local care.

The primary analysis specified in the protocol and in the Statistical Analysis Plan was to estimate the proportion of participants in the overall study population who were virologically suppressed (HIV-1 RNA ≤200 copies/mL) at week 48 with a 95% confidence interval.

Arms: arm 1: Under Protocol version 1.0:

No resistance to NRTIs, PIs, or NNRTI

• Continue current second-line regimen; NRTIs could be modified

Changed under LOA#2 to:

No LPV/RTV resistance and susceptible to at least one NRTI, regardless of NNRTI resistance or prior RAL exposure

• Continue second-line regimen which may include LPV/RTV; NRTIs could be modified

Changed under LOA#3 to:

No LPV/RTV resistance and susceptible to at least one NRTI, regardless of NNRTI resistance or prior RAL exposure

• Continue PI backbone; NRTIs could be modified. If on a RAL-containing regimen, RAL must be discontinued. arm 2: Under Protocol version 1.0:

Susceptible to DRV/RTV and ETR with or without resistance to NRTIs (and may have resistance to other PIs) and without active hepatitis B infection at screening

• Best available NRTIs, RAL, \& DRV/RTV

Changed under LOA#2 to:

Resistance to LPV/RTV but susceptible to DRV/RTV and ETR and with no prior RAL exposure and regardless of NRTI resistance (and without active hepatitis B infection at screening) OR Resistance to all NRTIs (i.e. susceptible to none) but susceptible to DRV/RTV and ETR and with no prior RAL exposure (and without active hepatitis B infection at screening)

• Best available NRTIs, RAL, \& DRV/RTV arm 3: Under Protocol version 1.0:

Susceptible to DRV/RTV and ETR with or without resistance to NRTIs (and may have resistance to other PIs) and without active hepatitis B infection at screening

• ETR, RAL, and DRV/RTV

Changed under LOA#2 to:

Resistance to LPV/RTV but susceptible to DRV/RTV and ETR and with no prior RAL exposure and regardless of NRTI resistance (and without active hepatitis B infection at screening) OR Resistance to all NRTIs (i.e. susceptible to none) but susceptible to DRV/RTV and ETR and with no prior RAL exposure (and without active hepatitis B infection at screening)

• ETR, RAL, and DRV/RTV arm 4: Under Protocol version 1.0:

Susceptible to DRV/RTV and ETR with or without resistance to NRTIs (and may have resistance to other PIs) and with active hepatitis B infection at screening

• RAL, DRV/RTV, and FTC/TDF or TDF+3TC

Changed under LOA#2 to:

Resistance to LPV/RTV but susceptible to DRV/RTV and ETR and with no prior RAL exposure and regardless of NRTI resistance (with active hepatitis B infection at screening) OR Resistance to all NRTIs (i.e. susceptible to none) but susceptible to DRV/RTV and ETR and with no prior RAL exposure (with active hepatitis B infection at screening)

• RAL, DRV/RTV, and FTC/TDF or TDF+3TC arm 5: Under Protocol version 1.0:

Resistance to NRTIs and ETR or resistance to ETR alone (and may have resistance to PIs other than DRV)

• Best available NRTIs, RAL, and DRV/RTV

Changed under LOA#2:

Resistance to LPV/RTV and ETR but susceptible to DRV/RTV and with no prior RAL exposure and regardless of NRTI resistance OR Resistance to ETR and to all NRTIs (i.e. susceptible to none) but susceptible to DRV/RTV and with no prior RAL exposure

• Best available NRTIs, RAL, and DRV/RTV arm 6: Under Protocol version 1.0:

Multiple NRTI resistance and/or DRV/RTV resistance or prior RAL exposure:

• Best available regimen, including study-provided and any locally available drugs

Changed under LOA#2:

Not eligible for Cohort A, B, or C:

• Best available regimen, including study-provided and any locally available drugs

Updated under protocol v2.0:

• Best available ART regimen, including study-provided and any locally available non-experimental drugs
Interventions: intervention 1: Darunavir intervention 2: Etravirine intervention 3: Emtricitabine/tenofovir disoproxil fumarate intervention 4: Raltegravir intervention 5: Second line ART regimens - based on a boosted protease inhibitor (bPI) plus two nucleoside analogues (NRTIs) intervention 6: Study provided drugs according to patient resistance profile (DRV, ETR, RTV, FTC/TDF) + any in country available drug as applicable & available intervention 7: SOC adherence versus SOC+CPI adherence
Intervention descriptions: intervention 1: Participants were administered darunavir orally as one 600 mg tablet twice a day (1200 mg per day) with food (taken with Ritonavir 100 mg twice a day \[200 mg per day\]) intervention 2: Patients were administered Etravirine orally as two 100 mg tablets or one 200 mg tablet twice a day (400 mg per day) following a meal. intervention 3: Patients were administered FTC/TDF orally as one fixed dose combination tablet (FTC 200 mg/TDF 300 mg) once daily, with or without food. intervention 4: Participants were administered Raltegravir orally as one 400 mg tablet twice daily (800 mg per day), with or without food intervention 5: LPV/r and ATV/r were the preferred bPIs for second-line ART. TDF + (3TC or FTC) or AZT + 3TC were the most frequent NRTI backbones. Cohort A did not include any of the new drugs; therefore, it is distinct from Cohorts B, C, and D. intervention 6: For Cohort D, in many situations a participant received the same regimen that patients are getting in Cohorts B and C if that was the best combination that can be obtained according to his/her resistance profile and drug availability (as for many countries there were no further drug options beyond the available study drugs). intervention 7: * not participating in the adherence randomization; OR
* randomized to SOC adherence; OR
* randomized to SOC+CPI adherence.

Protocol documents: