Primary Outcomes

Description: The percentage of PAR with HIV-1 RNA virus <50 c/ml determined from a blood sample drawn at Week 84 was tabulated by treatment arm with stratification by baseline HIV-1 RNA (<100,000 c/ml and >=100,000 c/ml). Per TLOVR algorithm, responders were PAR with confirmed viral load <50 c/ml who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <50 c/ml, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 50 c/ml, or had an unconfirmed HIV RNA of at least 50 c/ml at last visit.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 Copies (c) /Milliliter (ml) at the Week 84 Visit

Time: Week 84

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Secondary Outcomes

Description: The mean age of participants randomized to treatment in the Randomized Phase was calculated at Baseline.

Measure: Mean Age at Baseline of Participants Randomized to Treatment for the 48-Week Randomized Phase

Time: Baseline of Randomized Phase

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Description: The percentage of PAR with HIV-1 RNA virus <50 c/ml from a Week 36 blood sample was tabulated. Per TLOVR algorithm, responders were PAR with confirmed viral load <50 c/ml who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <50 c/ml, prematurely discontinued (DC) study or study medication (any reason), had confirmed rebound to >=50 c/ml, or had an unconfirmed HIV RNA >=50 c/ml at last visit. ITT-E observed analysis (Obs): all observed data. ITT-E M/D=F analysis: PAR with missing data/data collected after study medication DC were failures.

Measure: Percentage of Participants Who Achieved Plasma HIV-1 RNA <50 c/ml at the Week 36 Visit

Time: Week 36

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Description: A blood sample was drawn to determine the amount of HIV-1 RNA virus in c/ml at Week 84. The percentage of participants with HIV-1 RNA <50 c/ml at Week 84 was tabulated. The secondary analysis methods were: Observed (Obs; uses all visits with data in the analysis period), and missing/discontinuation=failure (M/D=F) analyses. M/D=F: participants with missing data or data collected after study medication DC were considered failures.

Measure: Percentage of Participants Who Achieved Plasma HIV-1 RNA <50 c/ml at the Week 84 Visit

Time: Week 84

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Description: Percentage of PAR with HIV-1 RNA <50 c/ml at Week 144 was tabulated; stratified by baseline HIV-1 RNA (<100,000 and >=100,000 c/ml). Per TLOVR algorithm, responders were PAR with confirmed (CF) HIV RNA <50 c/ml who had not met any non-responder (NR) criterion. NR were PAR who never achieved CF HIV RNA <50 c/ml, prematurely discontinued (DC) study or study medication (Med), had CF rebound to >=50 c/ml, or had an unconfirmed HIV RNA >=50 c/ml at last visit. Observed analysis (Obs): all observed data. M/D=F analysis: PAR with missing data/data collected after study Med DC were failures.

Measure: Percentage of Participants Who Achieved Plasma HIV-1 RNA <50 c/ml at the Week 144 Visit

Time: Week 144

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Description: The percentage of PAR with HIV-1 RNA virus <400 c/ml from a Week 36 blood sample was tabulated. Per TLOVR algorithm, responders were PAR with confirmed (CF) HIV RNA <400 c/ml who had not met any non-responder criterion. Non-responders were PAR who never achieved CF HIV RNA <400 c/ml, prematurely discontinued (DC) study or study medication (Med; any reason), had CF rebound to >=400 c/ml, or had an unconfirmed HIV RNA >=400 c/ml at last visit. ITT-E observed analysis (Obs): all observed data. ITT-E M/D=F analysis: PAR with missing data/data collected after study Med DC were failures.

Measure: Percentage of Participants Who Achieved Plasma HIV-1 RNA <400 c/ml at the Week 36 Visit

Time: Week 36

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Description: Percentage of PAR with HIV-1 RNA <400 c/ml at Week 84 was tabulated; stratified by baseline HIV-1 RNA (<100,000 and >=100,000 c/ml). Per TLOVR algorithm, responders were PAR with confirmed (CF) HIV-RNA <400 c/ml who had not met any non-responder (NR) criterion. NR were PAR who never achieved CF HIV RNA <400 c/ml, prematurely discontinued (DC) study or study medication (Med), had CF rebound to >=400 c/ml, or had an unconfirmed HIV RNA >=400 c/ml at last visit. Observed analysis (Obs): all observed data. M/D=F analysis: PAR with missing data/data collected after study Med DC were failures.

Measure: Percentage of Participants Who Achieved HIV-1 RNA <400 c/ml at the Week 84 Visit

Time: Week 84

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Description: Percentage of PAR with HIV-1 RNA <400 c/ml at Week 144 was tabulated; stratified by baseline HIV-1 RNA (<100,000 and >=100,000 c/ml). Per TLOVR algorithm, responders were PAR with confirmed (CF) HIV-RNA <400 c/ml who had not met any non-responder (NR) criterion. NR were PAR who never achieved CF HIV RNA <400 c/ml, prematurely discontinued (DC) study or study medication (Med), had CF rebound to >=400 c/ml, or had an unconfirmed HIV RNA >=400 c/ml at last visit. Observed analysis (Obs): all observed data. M/D=F analysis: PAR with missing data/data collected after study Med DC were failures.

Measure: Percentage of Participants Who Achieved HIV-1 RNA <400 c/ml at the Week 144 Visit

Time: Week 144

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Description: The number of participants that failed to respond to therapy through 36 weeks on treatment, based on the protocol definition of virologic failure (PDVF), was tabulated. PDVF was defined as (a) failure to achieve plasma HIV-1 RNA <400 c/ml by Week 30 or (b) confirmed HIV-1 RNA rebound >=400 c/ml after achieving HIV-1 <400 c/ml.

Measure: Number of Participants Who Met the Protocol-defined Virologic Failure (PDVF) Criteria at Week 36

Time: Week 36

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Description: The number of participants that failed to respond to therapy from the time of treatment randomization through Week 84, based on the protocol definition of virologic failure (PDVF), was tabulated. PDVF was defined as (a) failure to achieve plasma HIV-1 RNA <400 c/ml by Week 30 or (b) confirmed HIV-1 RNA rebound >=400 c/ml after achieving HIV-1 <400 c/ml.

Measure: Number of Participants Who Met the PDVF Criteria at Week 84

Time: Week 84

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Description: The number of participants enrolled in the extension phase that failed to respond to therapy from Week 84 through Week 144, based on the protocol definition of virologic failure (PDVF) was tabulated,. PDVF was defined as (a) failure to achieve plasma HIV-1 RNA <400 c/ml by Week 30 or (b) confirmed HIV-1 RNA rebound >=400 c/ml after achieving HIV-1 <400 c/ml.

Measure: Number of Participants Who Met the PDVF Criteria at Week 144

Time: Week 144

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Description: Change from baseline was calculated as the Week 36 value minus the baseline value. Blood was drawn to analyze for plasma HIV viral load.

Measure: Change From Baseline in HIV-1 RNA at Week 36

Time: Baseline and Week 36

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Description: Change from baseline was calculated as the Week 84 value minus the baseline value. Blood was drawn to analyze for plasma HIV viral load.

Measure: Change From Baseline in HIV-1 RNA at Week 84

Time: Baseline and Week 84

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Description: Change from baseline was calculated as the Week 144 value minus the baseline value. Blood was drawn to analyze for plasma HIV viral load.

Measure: Change From Baseline in HIV-1 RNA at Week 144

Time: Baseline and Week 144

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Description: Blood was drawn to analyze for CD4+ cell count. A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from baseline was calculated as the Week 36 value minus the baseline value.

Measure: Change From Baseline in CD4+ Cell Count at Week 36

Time: Baseline and Week 36

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Description: A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from baseline was calculated as the Week 84 value minus the baseline value. Blood was drawn to analyze for CD4+ cell count.

Measure: Change From Baseline in CD4+ Cell Count at Week 84

Time: Baseline and Week 84

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Description: A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from baseline was calculated as the Week 144 value minus the baseline value. Blood was drawn to analyze for CD4+ cell count.

Measure: Change From Baseline in CD4+ Cell Count at Week 144

Time: Baseline and Week 144

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Description: A blood sample was drawn for participants failing to respond to therapy, and the mutations present in the virus were identified. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at baseline. New resistance-associated mutations (defined by the International AIDS Society-USA guidelines) that developed at the time of failure were tabulated by drug class. PAR, participants; VF, virologic failure; NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.

Measure: Number of Confirmed Virologic Failure Participants With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Baseline Through Week 36

Time: Baseline through Week 36

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Description: A blood sample was drawn for participants failing to respond to therapy, and the mutations present in the virus were identified. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at baseline. New International AIDs Society-USA defined resistance mutations that developed at the time of failure were tabulated by drug class. VF, virologic failure; NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.

Measure: Number of Confirmed Virologic Failure Participants With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Randomization at Week 36 Through Week 84

Time: Randomization at Week 36 through Week 84

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Description: A blood sample was drawn for participants failing to respond to therapy, and the mutations present in the virus were identified. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at baseline. New International AIDs Society-USA defined resistance mutations that developed at the time of failure were tabulated by drug class. VF, virologic failure; NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.

Measure: Number of Confirmed Virologic Failure Participants With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Week 84 Through Week 144

Time: Week 84 through Week 144

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Description: A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at baseline. PAR, participant.

Measure: Number of Confirmed Virologic Failure Participants From Baseline Through Week 36 With Treatment-emergent Reductions in Susceptibility to Abacavir, Lamivudine, Atazanavir, or Ritonavir

Time: Baseline through Week 36

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Description: A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at baseline. PAR, participant.

Measure: Number of Confirmed Virologic Failure Participants From Randomization at Week 36 Through Week 84 With Treatment-emergent Reductions in HIV Susceptibility to Abacavir, Lamivudine, Atazanavir, or Ritonavir

Time: Randomization at Week 36 through Week 84

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Description: A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at baseline. PAR, participant.

Measure: Number of Confirmed Virologic Failure Participants From Week 84 Through Week 144 With Treatment-emergent Reductions in HIV Susceptibility to Abacavir, Lamivudine, Atazanavir, or Ritonavir

Time: Week 84 through Week 144

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Description: Percent compliance is defined as the total number of pills taken divided by the total number of pills prescribed. The total number of pills taken was calculated by subtracting any returned pills from the total number of pills that were dispensed to each participant during this period. Compliance was calculated for each medication in the regimen.

Measure: Mean Percent Compliance at Week 36

Time: Week 36

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Description: Percent compliance is defined as the total number of pills taken divided by the total number of pills prescribed. The total number of pills taken was calculated by subtracting any returned pills from the total number of pills that were dispensed to each participant during this period. Compliance was calculated for each medication in the regimen.

Measure: Mean Percent Compliance at Week 84

Time: Week 84

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Description: Percent compliance is defined as the total number of pills taken divided by the total number of pills prescribed. The total number of pills taken was calculated by subtracting any returned pills from the total number of pills that were dispensed to each participant during this period. Compliance was calculated for each medication in the regimen.

Measure: Mean Percent Compliance at Week 144

Time: Week 144

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Primary Outcomes

Measure: HIV-1 RNA change from baseline over the first 14 days of study

Time: 14 days

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Secondary Outcomes

Measure: safety and tolerability; pharmacokinetics

Time: 14 days

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Primary Outcomes

Description: The primary study endpoint was the proportion of participants who achieved HIV-1 RNA <50 copies/ml at Week 24 of study participation. The per-protocol primary analysis was conducted intention-to-treat, with missing evaluations counted as failures. Achievement of HIV-1 viral load below 50 copies/ml was defined as having HIV-1 RNA <50 copies/ml during the Week 24 analysis window (>18 and <30 weeks post-entry).

Measure: The Antiretroviral Activity of Etravirine 400 mg Given Once Daily, With Fixed-dose Truvada Once Daily, Among Treatment-naïve HIV-1 Infected Adults as Measured by the Percentage of Participants With HIV RNA < 50 Copies/mL at Week 24

Time: 24 weeks

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Secondary Outcomes

Description: This secondary outcome assessed the proportion of participants who achieved HIV-1 RNA <50 copies/ml at Week 48 of study treatment. The per-protocol analysis was conducted intention-to-treat, with missing evaluations counted as failures.

Measure: The Proportion of Participants With HIV RNA <50 Copies/mL at Week 48 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: 48 weeks

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Description: This secondary outcome assessed the proportion of participants who achieved HIV-1 RNA <50 copies/ml at Week 96 of study treatment. The per-protocol analysis was conducted intention-to-treat, with missing evaluations counted as failures.

Measure: The Proportion of Participants With HIV RNA <50 Copies/mL at Week 96 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: 96 weeks

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Description: This secondary outcome assessed the proportion of participants who achieved HIV-1 RNA <200 copies/ml at Week 24 of study treatment. The per-protocol analysis was conducted intention-to-treat, with missing evaluations counted as failures.

Measure: The Proportion of Participants With HIV RNA <200 Copies/mL at Week 24 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: 24 weeks

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Description: This secondary outcome assessed the proportion of participants who achieved HIV-1 RNA <200 copies/ml at Week 48 of study treatment. The per-protocol analysis was conducted intention-to-treat, with missing evaluations counted as failures.

Measure: The Proportion of Participants With HIV RNA <200 Copies/mL at Week 48 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: 48 weeks

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Description: This secondary outcome assessed the proportion of participants who achieved HIV-1 RNA 200 copies/ml at Week 96 of study treatment. The per-protocol analysis was conducted intention-to-treat, with missing evaluations counted as failures.

Measure: The Proportion of Participants With HIV RNA <200 Copies/mL at Week 96 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: 96 weeks

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Description: The per-protocol analysis of change in CD4+ cell count from baseline to Week 24 was calculated using the measurement closest to schedule and within the analysis window, and quantified with an estimated median and distribution-free 95% confidence interval (CI).

Measure: Change in CD4+ Cell Count From Baseline to Week 24 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 24 weeks

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Description: The per-protocol intention-to-treat analysis of change in CD4+ cell count from baseline to Week 48 was calculated using the measurement closest to schedule and within the analysis window, and quantified with an estimated median and distribution-free 95% CI.

Measure: Change in CD4+ Cell Count From Baseline to Week 48 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 48 weeks

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Description: The per-protocol intention-to-treat analysis of change in CD4+ cell count from baseline to Week 96 was calculated using the measurement closest to schedule and within the analysis window, and quantified with an estimated median and distribution-free 95% CI.

Measure: Change in CD4+ Cell Count From Baseline to Week 96 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 96 weeks

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Description: Per-protocol, genotype testing was conducted at confirmation of virologic failure if the confirmatory HIV-1 RNA was above the laboratory-specified threshold of 500 copies/mL. HIV-1 genotype was determined using the TRUGENE® HIV-1 assay (Siemens Healthcare Diagnostics, Tarrytown, NY)

Measure: Resistance Mutations in the Subset of Patients With Confirmed Virologic Failure Who Have HIV RNA >500 Copies/mL and Genotype Resistance Results

Time: 96 weeks

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Description: The safety/tolerability endpoint was defined as the first grade 3 or higher sign, symptom or laboratory abnormality that was at least one grade higher than baseline among participants ever exposed to etravirine (regardless of treatment status), or permanent discontinuation of etravirine due to any toxicity (regardless of grade). Modification of tenofovir/emtricitabine was not a safety/tolerability event. The Kaplan-Meier method was used to estimate the proportion of participants ever exposed to etravirine who remained event-free through Week 96, with a 95% CI using Greenwood's variance estimate and a log-log transformation. Time was handled as continuous (weeks from treatment start to event or censoring).

Measure: Tolerability of Etravirine in HIV-1 Infected Adults Initiating Antiretroviral Therapy

Time: 96 weeks

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Description: The Kaplan-Meier method was used to estimate the proportion of participants ever exposed to etravirine who remained event-free through Week 96, with a 95% CI using Greenwood's variance estimate and a log-log transformation. Time was handled as continuous (weeks from treatment start to event or censoring).

Measure: Probability of Remaining Free of a Safety/Tolerability Event at 96 Weeks

Time: 96 weeks

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Description: Metabolic data analyses were conducted as-treated. Changes in total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, triglycerides, and fasting blood glucose from baseline to follow-up were calculated using the value closest to schedule and within the analysis window, and were quantified with the median and inter-quartile range.

Measure: Change in the Lipid Profile and Glucose Metabolism, in a Subgroup of up to 40 Participants, From Baseline to Week 24 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 24 weeks

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Description: Metabolic data analyses were conducted as-treated. Insulin resistance was estimated by the homeostasis model assessment of insulin resistance (HOMA-IR), and was calculated as [fasting insulin (µU/mL) × fasting glucose (mmol/L)]/22.5. Changes from baseline to follow-up were calculated using the value closest to schedule and within the analysis window, and were quantified with the median and inter-quartile range.

Measure: Change in Glucose Metabolism (Insulin Resistance), in a Subgroup of up to 40 Participants, From Baseline to Week 24 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 24 weeks

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Description: Metabolic data analyses were conducted as-treated. Changes in total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, triglycerides, and fasting blood glucose from baseline to follow-up were calculated using the value closest to schedule and within the analysis window, and were quantified with the median and inter-quartile range.

Measure: Change in the Lipid Profile and Glucose Metabolism, in a Subgroup of up to 40 Participants, From Baseline to Week 48 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 48 weeks

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Description: Metabolic data analyses were conducted as-treated. Insulin resistance was estimated by the homeostasis model assessment of insulin resistance (HOMA-IR), and was calculated as [fasting insulin (µU/mL) × fasting glucose (mmol/L)]/22.5. Changes from baseline to follow-up were calculated using the value closest to schedule and within the analysis window, and were quantified with the median and inter-quartile range.

Measure: Change in Glucose Metabolism (Insulin Resistance), in a Subgroup of up to 40 Participants, From Baseline to Week 48 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 48 weeks

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Description: Metabolic data analyses were conducted as-treated. Changes in total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, triglycerides, and fasting blood glucose from baseline to follow-up were calculated using the value closest to schedule and within the analysis window, and were quantified with the median and inter-quartile range. Insulin resistance was estimated by the homeostasis model assessment of insulin resistance (HOMA-IR), and was calculated as [fasting insulin (µU/mL) × fasting glucose (mmol/L)]/22.5.

Measure: Change in the Lipid Profile and Glucose Metabolism, in a Subgroup of up to 40 Participants, From Baseline to Week 96 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 96 weeks

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Description: Metabolic data analyses were conducted as-treated. Insulin resistance was estimated by the homeostasis model assessment of insulin resistance (HOMA-IR), and was calculated as [fasting insulin (µU/mL) × fasting glucose (mmol/L)]/22.5. Changes from baseline to follow-up were calculated using the value closest to schedule and within the analysis window, and were quantified with the median and inter-quartile range.

Measure: Change in Glucose Metabolism (Insulin Resistance), in a Subgroup of up to 40 Participants, From Baseline to Week 96 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 96 weeks

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Description: Changes from baseline to follow-up in limb fat, trunk fat, total body fat, and lean mass were calculated. Whole body Dual X-ray Absorptiometry (DEXA) scans (Hologic Discovery W, Hologic Inc., Bedford, MA) were conducted at baseline, Week 24, and Week 96 to assess body fat distribution. Calculations of change from baseline to follow-up used the value closest to schedule and within the analysis window, and were quantified with the estimated median and distribution-free 95% CI.

Measure: Change in Limb and Trunk Fat Distribution as Measured by DEXA Scan, in the Same Subgroup of up to 40 Participants (as in Aim 8), From Baseline to Week 24 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 24 weeks

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Description: Changes from baseline to follow-up in limb fat, trunk fat, total body fat, and lean mass were calculated. Whole body Dual X-ray Absorptiometry (DEXA) scans (Hologic Discovery W, Hologic Inc., Bedford, MA) were conducted at baseline, Week 24, and Week 96 to assess body fat distribution. Calculations of change from baseline to follow-up used the value closest to schedule and within the analysis window, and were quantified with the estimated median and distribution-free 95% CI.

Measure: Change in Limb and Trunk Fat Distribution as Measured by DEXA Scan, in the Same Subgroup of up to 40 Participants (as in Aim 8), From Baseline to Week 96 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 96 weeks

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Description: Change from baseline to follow-up in fat mass ratio was calculated. Whole body Dual X-ray Absorptiometry (DEXA) scans (Hologic Discovery W, Hologic Inc., Bedford, MA) were conducted at baseline, Week 24, and Week 96 to assess body fat distribution. Fat mass ratio was calculated as the ratio of trunk fat percentage and lower limb fat percentage (% trunk fat mass / % lower limb fat mass). Calculations of change from baseline to follow-up used the value closest to schedule and within the analysis window, and were quantified with the estimated median and distribution-free 95% CI.

Measure: Change in Fat Mass Ratio as Measured by DEXA Scan, in the Same Subgroup of up to 40 Participants (as in Aim 8), From Baseline to Week 24 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 24 weeks

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Description: This secondary outcome measure assessed the ratio of semen:plasma concentration of etravirine in paired semen and plasma samples collected from 14 male participants at Week 4 of treatment with etravirine and fixed dose tenofovir/emtricitabine.

Measure: Pharmacokinetics of Etravirine in Genital Secretions of up to 10 Men and up to 10 Women at Week 4 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: 4 weeks

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Description: Change from baseline to follow-up in fat mass ratio was calculated. Whole body Dual X-ray Absorptiometry (DEXA) scans (Hologic Discovery W, Hologic Inc., Bedford, MA) were conducted at baseline, Week 24, and Week 96 to assess body fat distribution. Fat mass ratio was calculated as the ratio of trunk fat percentage and lower limb fat percentage (% trunk fat mass / % lower limb fat mass). Calculations of change from baseline to follow-up used the value closest to schedule and within the analysis window, and were quantified with the estimated median and distribution-free 95% CI.

Measure: Change in Fat Mass Ratio as Measured by DEXA Scan, in the Same Subgroup of up to 40 Participants (as in Aim 8), From Baseline to Week 96 of Treatment With Etravirine and Fixed-dose Tenofovir/Emtricitabine

Time: Baseline to 96 weeks

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Description: Population pharmacokinetics were calculated using sparse sampling. Plasma concentrations of etravirine measured in samples from participants who provided blood samples at multiple study visits, with variation in sampling times relative to dosing of etravirine used to cover the spectrum of the dosing schedule. Model simulations and fitting were performed with NONMEM ® 7.3. (ICON, plc) and model exploration was performed with Berkeley Madonna (Berkeley, CA, USA)

Measure: Population Pharmacokinetics of Etravirine 400 mg Once Daily, in Combination With Fixed-dose Emtricitabine-tenofovir Among Treatment-naïve HIV-1 Infected Adults

Time: At or after 4 weeks

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Description: Population pharmacokinetics were calculated using sparse sampling. Plasma concentrations of etravirine measured in samples from participants who provided blood samples at multiple study visits, with variation in sampling times relative to dosing of etravirine used to cover the spectrum of the dosing schedule. Model simulations and fitting were performed with NONMEM ® 7.3. (ICON, plc) and model exploration was performed with Berkeley Madonna (Berkeley, CA, USA)

Measure: Population Pharmacokinetics of Etravirine 400 mg Once Daily, in Combination With Fixed-dose Emtricitabine-tenofovir Among Treatment-naïve HIV-1 Infected Adults: Etravirine AUC-24 Hours at Steady State

Time: At or after 4 weeks

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Primary Outcomes

Measure: Variations in the immune status of patients in each group throughout follow-up.

Time: 48 weeks

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Secondary Outcomes

Measure: Percentage of patients that increase viral load by > 0.5 log

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of patients that increase viral load by > 100,000 copies/mL

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of patients that present some clinical event, B or C classification according to the CDC.

Time: during the 48 weeks of follow-up

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Measure: Percentage of patients that present clinical or analytical adverse effects degree > 2 according to the WHO classification.

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of patients that drop out of treatment.

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of patients that drop out of the study due to intolerance or adverse effects.

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of change in lipid determinations.

Time: weeks 12, 24, 36 and 48 with regard to baseline

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Measure: Percentage of patients that report changes, improvement or worsening in redistribution of body fat.

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of patients that present adherence to the antiretroviral treatment > 95%.

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of patients that present improvement in the quality of life (MOS-HIV) and satisfaction questionnaires.

Time: weeks 12, 24, 36 and 48

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Measure: Percentage of patients that present an increase in the number of active drugs.

Time: at the end of the study

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Primary Outcomes

Description: The primary outcome is sustained Virologic response, defined as HIV-1 RNA <500 copies/mL until trial completion at 96 weeks.

Measure: Number of Participants With Sustained Virologic Response

Time: 96 Weeks

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Secondary Outcomes

Description: The number of participants with grades 2,3 and 4 adverse events and laboratory toxicities.

Measure: Patients With Grade 2, 3 and 4 Adverse Events and Laboratory Toxicities

Time: Protocol length is 96 weeks

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Description: The number of participants with plasma HIV RNA < 50 copies/mL

Measure: Patients With Plasma HIV RNA < 50 Copies/mL

Time: 96 weeks.

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Description: The number of participants with plasma HIV RNA < 400 copies/mL

Measure: Patients With Plasma HIV RNA < 400 Copies/mL

Time: 96 weeks

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Description: Percent Change From Baseline in Plasma HIV RNA at 96 weeks

Measure: Change in Plasma HIV RNA From Baseline to Week 96

Time: Baseline to week 96

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Description: To determine the mean change from Baseline in CD4 cell count to week 96.

Measure: Changes in CD4 Cell Count From Baseline and Week 96

Time: Baseline to week 96

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Primary Outcomes

Description: The percentage of participants who had HIV-1 RNA ≥ 50 copies/mL at Week 24 were analyzed using the snapshot algorithm, which defined 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.

Measure: Percentage of Participants Who Had HIV-1 RNA ≥ 50 Copies/mL at Week 24 as Defined by the US FDA-Defined Snapshot Algorithm: Full Analysis Set

Time: Week 24

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Secondary Outcomes

Description: The percentage of participants who had HIV-1 RNA ≥ 50 copies/mL at Week 48 were analyzed using the snapshot algorithm, which defined 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. By Week 48, participants in B/F/TAF had received 48 weeks of treatment with B/F/TAF, while those in the Delayed B/F/TAF group had received only 24 weeks of treatment with B/F/TAF.

Measure: Percentage of Participants Who Had HIV-1 RNA ≥ 50 Copies/mL at Week 48 as Defined by the US FDA-Defined Snapshot Algorithm: Full Analysis Set

Time: Week 48

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Description: The percentage of participants who had HIV-1 RNA < 50 copies/mL at Week 24 were analyzed using the snapshot algorithm, which defined 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.

Measure: Percentage of Participants Who Had HIV-1 RNA < 50 Copies/mL at Week 24 as Defined by the US FDA-Defined Snapshot Algorithm: Full Analysis Set

Time: Week 24

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Description: The percentage of participants who had HIV-1 RNA < 50 copies/mL at Week 24 were analyzed using the snapshot algorithm, which defined 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.

Measure: Percentage of Participants Who Had HIV-1 RNA < 50 Copies/mL at Week 24 as Defined by the US FDA-Defined Snapshot Algorithm: Week 24 Per Protocol Analysis Set

Time: Week 24

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Description: The percentage of participants who had HIV-1 RNA < 50 copies/mL at Week 48 were analyzed using the snapshot algorithm, which defined 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. By Week 48, participants in B/F/TAF had received 48 weeks of treatment with B/F/TAF, while those in the Delayed B/F/TAF group had received only 24 weeks of treatment with B/F/TAF.

Measure: Percentage of Participants Who Had HIV-1 RNA < 50 Copies/mL at Week 48 as Defined by the US FDA-Defined Snapshot Algorithm: Full Analysis Set

Time: Week 48

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Description: The analysis includes values up to 1 day after permanent discontinuation of study treatment.

Measure: Change From Baseline in CD4+ Cell Count at Week 24: Full Analysis Set

Time: Baseline to Week 24

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Description: The analysis includes values up to 1 day after permanent discontinuation of study treatment.

Measure: Change From Baseline in CD4+ Cell Count at Week 24: Week 24 Per Protocol Analysis Set

Time: Baseline to Week 24

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Description: The analysis includes values up to 1 day after permanent discontinuation of study treatment. By Week 48, participants in B/F/TAF had received 48 weeks of treatment with B/F/TAF, while those in the Delayed B/F/TAF group had received only 24 weeks of treatment with B/F/TAF.

Measure: Change From Baseline in CD4+ Cell Count at Week 48: Full Analysis Set

Time: Baseline to Week 48

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Primary Outcomes

Description: The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <50 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <50 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 50 c/mL, or had an unconfirmed HIV RNA of at least 50 c/mL at the last visit.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 Copies (c)/Milliliter (mL) at the Week 24 Visit: TLOVR Analysis

Time: Week 24

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Secondary Outcomes

Description: The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn through Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 c/mL at the Week 24 Visit: Observed, M/D=F, and SNAPSHOT Analyses

Time: Week 24

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Description: The percentage of PAR with HIV-1 RNA virus <50 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <50 c/mL at the Week 48 Visit: TLOVR, Observed, M/D=F, and SNAPSHOT Analyses

Time: Week 48

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Description: The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <400 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <400 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 400 c/mL, or had an unconfirmed HIV RNA of at least 400 c/mL at the last visit.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 24 Visit: TLOVR Analysis

Time: Week 24

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Description: The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment. Per TLOVR algorithm, responders were PAR with confirmed viral load <400 c/mL who had not met any non-responder criterion. Non-responders were PAR who never achieved confirmed HIV RNA <400 c/mL, prematurely discontinued study or study medication for any reason, had confirmed rebound to at least 400 c/mL, or had an unconfirmed HIV RNA of at least 400 c/mL at the last visit.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 48 Visit: TLOVR Analysis

Time: Week 48

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Description: The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 24 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 24 Visit: Observed, MD=F, and SNAPSHOT Analyses

Time: Week 24

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Description: The percentage of PAR with HIV-1 RNA virus <400 c/mL determined from blood samples drawn at Week 48 was tabulated by treatment arm with stratification by initial antiretroviral treatment using specific analysis methods.

Measure: Percentage of Participants (PAR) Who Achieved Plasma HIV-1 RNA <400 c/mL at the Week 48 Visit: Observed, MD=F, and SNAPSHOT Analyses

Time: Week 48

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Description: Change from Baseline was calculated as the Week 24 value minus the Baseline value. Blood was drawn to analyze for plasma HIV viral load.

Measure: Change From Baseline in HIV-1 RNA at Week 24

Time: Baseline and Week 24

---

Description: Change from Baseline was calculated as the Week 48 value minus the Baseline value. Blood was drawn to analyze for plasma HIV viral load.

Measure: Change From Baseline in HIV-1 RNA at Week 48

Time: Baseline and Week 48

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Description: Blood was drawn to analyze for CD4+ cell count. A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from Baseline was calculated as the Week 24 value minus the Baseline value.

Measure: Change From Baseline in CD4+ Cell Count at Week 24

Time: Baseline and Week 24

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Description: Blood was drawn to analyze for CD4+ cell count. A CD4+ cell is a T lymphocyte that carries the CD4 antigen. Immunologic response was assessed by CD4+ counts. Change from Baseline was calculated as the Week 48 value minus the Baseline value.

Measure: Change From Baseline in CD4+ Cell Count at Week 48

Time: Baseline and Week 48

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Description: Triglycerides, total cholesterol, HDL cholesterol, and LDL cholesterol levels were measured at Week 24. A Fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 24 value minus the Baseline value for each parameter.

Measure: Change From Baseline in Fasting Triglycerides, Total Cholesterol, High-density Lipoprotein (HDL) Cholesterol, and Low-density Lipoprotein (LDL) Cholesterol at Week 24

Time: Baseline and Week 24

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Description: A Fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 24 value minus the Baseline value.

Measure: Change From Baseline in Cholesterol/HDL Ratio at Week 24

Time: Baseline and Week 24

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Description: Triglycerides, total cholesterol, HDL cholesterol, and LDL cholesterol levels were measured or calculated at Week 48. A fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 48 value minus the Baseline value for each parameter.

Measure: Change From Baseline in Fasting Triglycerides, Total Cholesterol, High-density Lipoprotein (HDL) Cholesterol, and Low-density Lipoprotein (LDL) Cholesterol at Week 48

Time: Baseline and Week 48

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Description: A fasting blood sample was drawn to analyze for lipids. Change from Baseline was calculated as the Week 48 value minus the Baseline value for each parameter.

Measure: Change From Baseline in Cholesterol/HDL Ratio at Week 48

Time: Baseline and Week 48

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Description: The number of participants that failed to remain virologically suppressed through 24 weeks on treatment was assessed. Viral failure is defined per protocol as confirmed HIV-1 RNA >=400 c/mL.

Measure: Number of Participants Who Met the Protocol-defined Confirmed Viral Failure Criteria Through Week 24

Time: From Baseline to Week 24

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Description: The number of participants that failed to remain virologically suppressed from baseline through 48 weeks on treatment was assessed. Viral failure is defined per protocol as confirmed HIV-1 RNA >=400 c/mL.

Measure: Number of Participants Who Met the Protocol-defined Confirmed Viral Failure Criteria Through Week 48

Time: From Baseline to Week 48

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Description: Death and clinical disease progression (as per CDC classification) were assessed from Baseline through Week 48. Disease progression is defined as progression from CDC Class A to B, Class A to C, or from Class B to C. AIDS CDC classifications are: Class A, Asymptomatic/lymphadenopathy/acute HIV; Class B, Symptomatic, not AIDS; Class C, AIDS indicator conditions. The CDC categorization of HIV/AIDS is based on the lowest documented CD4 cell count (Class A, >=500 cells per microliter [µl]; Class B, 200-499 cells/µl; Class C, <200 cells/µl) and on previously diagnosed HIV-related conditions.

Measure: Number of Participants Who Experienced Death and/or Disease Progression

Time: From Baseline to Week 48

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Description: A blood sample was drawn for particiapants with confirmed VF >=400 c/mL. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at Baseline. New resistance-associated viral mutations defined by the International Acquired Immunodeficiency Syndrome Society-United States of America guidelines present at the time of failure were tabulated by drug class. NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.

Measure: Number of Confirmed Virologic Failure (VF) Participants (PAR) With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Baseline Through Week 24

Time: From Baseline to Week 24

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Description: A blood sample was drawn for particiapants with confirmed VF >=400 c/mL. For each participant, the mutations found at the time of failure were compared with any mutations found in the blood sample at Baseline. New resistance-associated viral mutations defined by the International Acquired Immunodeficiency Syndrome Society-United States of America guidelines present at the time of failure were tabulated by drug class. NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, non-nucleoside reverse transcriptase inhibitor; PI, protease inhibitor.

Measure: Number of Confirmed Virologic Failure (VF) Participants (PAR) With Treatment-emergent HIV Genotypic Resistance in Reverse Transcriptase and Protease From Baseline Through Week 48

Time: From Baseline to Week 48

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Description: A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at Baseline.

Measure: Number of Confirmed Virologic Failure Participants (PAR) From Baseline Through Week 24 With the Indicated Treatment-emergent Reductions in Susceptibility to Abacavir, Lamivudine, Tenofovir, Emtricitabine, Atazanavir, or Ritonavir

Time: From Baseline to Week 24

---

Description: A blood sample was drawn for participants failing to respond to therapy, and changes in drug susceptibility for HIV isolated from the participants for each drug used in the study were assessed. For each participant, the changes in drug susceptibility detected by phenotypic assay in virus from the sample collected at the time of failure was compared with drug susceptibility in the virus from the blood sample at Baseline.

Measure: Number of Confirmed Virologic Failure Participants (PAR) From Baseline Through Week 48 With the Indicated Treatment-emergent Reductions in Susceptibility to Abacavir, Lamivudine, Tenofovir, Emtricitabine, Atazanavir, or Ritonavir

Time: From Baseline to Week 48

---

Description: The National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) Version 3.0 is a descriptive terminology that can be utilized for AE reporting. A grading (severity) scale is provided for each AE. Grade refers to the severity of the adverse event (AE). The CTCAE v3.0 displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1, mild AE; Grade 2, moderate AE; Grade 3, severe AE; Grade 4, life-threatening or disabling AE; Grade 5, death related to the AE.

Measure: Number of Participants With the Indicated Grade 2 to Grade 4 Adverse Events (AEs) Occurring at a Frequency of >=3% in Either Treatment Group

Time: From Baseline to Week 24

---

Description: The National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) Version 3.0 is a descriptive terminology that can be utilized for AE reporting. A grading (severity) scale is provided for each AE. Grade refers to the severity of the adverse event (AE). The CTCAE v3.0 displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1, mild AE; Grade 2, moderate AE; Grade 3, severe AE; Grade 4, life-threatening or disabling AE; Grade 5, death related to the AE.

Measure: Number of Participants With the Indicated Grade 2 to Grade 4 Adverse Events (AEs) Occurring at a Frequency of >=3% in Either Treatment Group

Time: From Baseline to Week 48

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Primary Outcomes

Description: Subjects were randomized and initiated treatment on one of the antiretroviral arms(FPV/r or EFV) at study Entry visit. Subjects would be switched for the follwing reasons: To resolve a Grade 3 or 4 Adverse Event The subject experienced a virologic failure (as defined in section 3.6.2) The investigator believes the subject is at a significant risk for failing to comply with the protocol AND the investigator believes a regimen substitution is likely to resolve the compliance issue The investigator believes there is any other significant safety concern for the subject associated with remaining on the current regimen (e.g., hypersensitivity reaction, increased risk of suicide)

Measure: Number of Subjects Needing to Switch Comparator Drugs (FPV/r or EFV)

Time: 96 weeks

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Measure: Number of Subjects Developing Any Treatment-related Grade 3-4 Adverse Events

Time: 96 weeks

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Primary Outcomes

Description: Sustained Virologic Response (SVR12) was defined as HCV RNA < the lower limit of quantitation (LLOQ) at 12 weeks after stopping LDV/SOF treatment.

Measure: Percentage of Participants With HCV RNA < LLOQ at 12 Weeks After Discontinuation of LDV/SOF Treatment (SVR12)

Time: HCV Posttreatment Week 12

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Secondary Outcomes

Description: SVR4 was defined as HCV RNA < LLOQ at 4 weeks after stopping LDV/SOF treatment.

Measure: Percentage of Participants With HCV RNA < LLOQ at 4 Weeks After Discontinuation of LDV/SOF Treatment (SVR4)

Time: HCV Posttreatment Week 4

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Description: The percentage of participants with HIV-1 RNA ≥ 50 copies/mL 24 weeks after start of the F/TAF-based regimen were 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.

Measure: Percentage of Participants With HIV-1 RNA ≥ 50 Copies/mL (Virologic Failure) 24 Weeks After Start of the F/TAF-Based Regimen Using Modified FDA Snapshot Algorithm

Time: 24 weeks after start of HIV treatment

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Measure: Percentage of Participants Experiencing Grades 1 Through 4 Adverse Events After Switch to E/C/F/TAF or F/R/TAF Throughout the Study and During Coadministeration With LDV/SOF Treatment

Time: Up to 32 weeks plus 30 days

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Primary Outcomes

Measure: Viral load in plasma, genital tract (vaginal secretions), and gut (by in situ hybridization)

Time: 48 weeks

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Measure: Latent viral reservoir (pro-viral DNA) in the peripheral blood and genital tract

Time: 48 weeks

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Measure: Immune effects (CD4/CD8 immunophenotypes) in gut and PBMCs and plasma cytokine profiles

Time: 48 weeks

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Secondary Outcomes

Measure: Determine the pharmacokinetics of Raltegravir in blood and gut tissue; relative tissue/compartment penetration compared to Efavirenz

Time: 48 weeks

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Primary Outcomes

Description: The percentage of participants with PVR for HIV-1 RNA cutoff at 50 copies/mL at Week 12 was summarized. PVR was the percentage of participants who did not have a confirmed virologic rebound. Virologic rebound was defined as 2 consecutive HIV-1 RNA values ≥ 50 copies/mL or the last available HIV-1 RNA value ≥ 50 copies/mL during the study followed by premature discontinuation from the study.

Measure: Percentage of Participants With Human Immunodeficiency Virus-1 Ribonucleic Acid (HIV-1 RNA) < 50 Copies/mL at Week 12 as Defined by Pure Virologic Response (PVR)

Time: Week 12

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Secondary Outcomes

Description: Development of new resistance mutations was assessed in participants who developed virologic failure, defined as 2 consecutive HIV-1 RNA result ≥ 50 copies/mL at any point in the study or with HIV-1 RNA ≥ 50 copies/mL at last visit.

Measure: Percentage of Participants With Emergence of New Mutations in HIV-1 Reverse Transcriptase and Integrase

Time: Day 1 up to 48 weeks

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Description: The percentage of participants with PVR for HIV-1 RNA cutoff at 50 copies/mL at Week 24 was summarized. PVR was the percentage of participants who did not have a confirmed virologic rebound. Virologic rebound was defined as 2 consecutive HIV-1 RNA values ≥ 50 copies/mL or the last available HIV-1 RNA value ≥ 50 copies/mL during the study followed by premature discontinuation from the study.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24 Using PVR

Time: Week 24

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Description: The percentage of participants with PVR for HIV-1 RNA cutoff at 50 copies/mL at Week 48 was summarized. PVR was the percentage of participants who did not have a confirmed virologic rebound. Virologic rebound was defined as 2 consecutive HIV-1 RNA values ≥ 50 copies/mL or the last available HIV-1 RNA value ≥ 50 copies/mL during the study followed by premature discontinuation from the study.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 48 Using PVR

Time: Week 48

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 12 was also 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. Week 12 window was between Day 71 and 98 (inclusive).

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 12 Using the FDA Snapshot Analysis

Time: Week 12

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 24 was also 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. Week 24 window was between Day 141 and 210 (inclusive).

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24 Using the FDA Snapshot Analysis

Time: Week 24

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 48 was also 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. Week 12 window was between Day 295 and 378 (inclusive).

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 48 Using the FDA Snapshot Analysis

Time: Week 48

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Description: The percentage of participants with HIV-1 RNA < 20 copies/mL at Week 12 was also 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. Week 12 window was between Day 71 and 98 (inclusive).

Measure: Percentage of Participants With HIV-1 RNA < 20 Copies/mL at Week 12 Using the FDA Snapshot Analysis

Time: Week 12

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Description: The percentage of participants with HIV-1 RNA < 20 copies/mL at Week 24 was also 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. Week 24 window was between Day 141 and 210 (inclusive).

Measure: Percentage of Participants With HIV-1 RNA < 20 Copies/mL at Week 24 Using the FDA Snapshot Analysis

Time: Week 24

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Description: The percentage of participants with HIV-1 RNA < 20 copies/mL at Week 48 was also 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. Week 12 window was between Day 295 and 378 (inclusive).

Measure: Percentage of Participants With HIV-1 RNA < 20 Copies/mL at Week 48 Using the FDA Snapshot Analysis

Time: Week 48

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 12 was analyzed using the M = F approach. In this approach, all missing data was treated as HIV-1 RNA ≥ 50 copies/mL.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 12 Using the Missing = Failure (M = F) Approach

Time: Week 12

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 24 was analyzed using the M = F approach. In this approach, all missing data was treated as HIV-1 RNA ≥ 50 copies/mL.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24 Using the M = F Approach

Time: Week 24

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 48 was analyzed using the M = F approach. In this approach, all missing data was treated as HIV-1 RNA ≥ 50 copies/mL.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 48 Using the M = F Approach

Time: Week 48

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 12 was also analyzed using the M = E approach. In this approach, all missing data was excluded in the computation of the proportions.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 12 Using the Missing = Excluded (M = E) Approach

Time: Week 12

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 24 was also analyzed using the M = E approach. In this approach, all missing data was excluded in the computation of the proportions.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24 Using the M = E Approach

Time: Week 24

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 48 was also analyzed using the M = E approach. In this approach, all missing data was excluded in the computation of the proportions.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 48 Using the M = E Approach

Time: Week 48

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Measure: Change From Baseline in Cluster Determinant 4+ (CD4+) Cell Count at Week 12

Time: Baseline (Day 1); Week 12

---

Measure: Change From Baseline in CD4+ Cell Count at Week 24

Time: Baseline (Day 1); Week 24

---

Measure: Change From Baseline in CD4+ Cell Count at Week 48

Time: Baseline (Day 1); Week 48

---

Measure: Change From Baseline in CD4 Percentage (%) at Week 12

Time: Baseline (Day 1); Week 12

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Measure: Change From Baseline in CD4 % at Week 24

Time: Baseline (Day 1); Week 24

---

Measure: Change From Baseline in CD4 % at Week 48

Time: Baseline (Day 1); Week 48

---

Primary Outcomes

Measure: Percent Change From Baseline to Week 48 in Spine BMD

Time: Baseline; Week 48

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Measure: Percent Change From Baseline to Week 48 in Hip BMD

Time: Baseline; Week 48

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Secondary Outcomes

Measure: Percent Change From Baseline to Week 24 in Spine BMD

Time: Baseline; Week 24

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Measure: Percent Change From Baseline to Week 24 in Hip BMD

Time: Baseline; Week 24

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Description: The percentage of participants with HIV-1 RNA < 50 copies/mL at Week 24 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.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24 as Defined by the US FDA-Defined Snapshot Algorithm

Time: Week 24

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Description: 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.

Measure: Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 48 as Defined by the US FDA-Defined Snapshot Algorithm

Time: Week 48

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Measure: Change From Baseline in CD4+ Cell Count at Week 24

Time: Baseline; Week 24

---

Measure: Change in Baseline in CD4+ Cell Count at Week 48

Time: Baseline; Week 48

---

Primary Outcomes

Description: The percentage of participants achieving HIV-1 RNA < 50 copies/mL at Week 24 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.

Measure: Percentage of Participants Who Have HIV-1 RNA < 50 Copies/mL as Defined by the FDA Snapshot Algorithm at Week 24

Time: Week 24

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Secondary Outcomes

Description: The percentage of participants achieving HIV-1 RNA < 50 copies/mL at week 12 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.

Measure: Percentage of Participants Who Have HIV-1 RNA < 50 Copies/mL as Defined by the FDA Snapshot Algorithm at Week 12

Time: Week 12

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Description: 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.

Measure: Percentage of Participants Who Have HIV-1 RNA < 50 Copies/mL as Defined by the FDA Snapshot Algorithm at Week 48

Time: Week 48

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Measure: Change From Baseline in CD4+ Cell Count at Week 24

Time: Baseline; Week 24

---

Measure: Change From Baseline in CD4+ Cell Count at Week 48

Time: Baseline; Week 48

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Primary Outcomes

Description: percentage with HIV-1 RNA ≥50 copies/mL at Week 48 in each treatment arm

Measure: The Primary outcome measure is to evaluate the efficacy of switching from B/F/TAF to DTG/3TC versus continuing B/F/TAF as determined by the proportion of participants with HIV-1 RNA ≥50 copies/mL at Week 48

Time: 48 weeks

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Secondary Outcomes

Description: percentage with HIV-1 RNA ≥50 copies/mL at Weeks 12 and 24 in each treatment arm

Measure: The Secondary outcome measure is to evaluate the efficacy of switching to DTG/3TC from B/F/TAF as determined by the proportion of participants with HIV-1 RNA≥ 50 copies/mL at Weeks 12 and 24

Time: 12 and 24 weeks

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Description: percentage with HIV-1 RNA<50 copies/mL at Weeks 12, 24 and 48 in each treatment arm

Measure: The secondary outcome measure is to evaluate the efficacy of switching to DTG/3TC from B/F/TAF as determined by the proportion of participants with HIV-1 RNA<50 copies/mL at Weeks 12, 24 and 48

Time: 12, 24 and 48 weeks

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Description: AEs and lab abnormalities graded using DAIDS grading scale

Measure: The secondary outcome measure is to measure the Incidence and severity of adverse events and laboratory abnormalities (graded using DAIDs grading scale) through 48 weeks

Time: 48 weeks

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Description: Number of participants who discontinue study treatment and reasons for discontinuation

Measure: The secondary outcome measure is to evaluate the proportion of participants that discontinue treatment through 48 weeks in each treatment arm and reasons for discontinuation

Time: 48 weeks

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Description: Change from Baseline in fasting lipids at Weeks 24, and 48

Measure: The secondary outcome measure is to evaluate the effects of DTG/3TC once daily on fasting lipids over time compared to B/F/TAF through 48 weeks

Time: 48 weeks

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Description: Change from Baseline in weight (kg) measured at Weeks 12, 24, and 48

Measure: The secondary outcome measure is to evaluate changes in weight (kg) in those treated with DTG/3TC vs. B/F/TAF over time

Time: 12, 24 and 48 weeks

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Description: Change from Baseline in waist circumference (measured in inches) at Weeks 12, 24, and 48

Measure: The secondary outcome measure is to evaluate changes in waist circumference (inches) in those treated with DTG/3TC vs. B/F/TAF over time

Time: 12, 24 and 48 weeks

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Description: Change from Baseline in weight (kg) and height (meters) will be used to assess changes in BMI (kg/m2) measured at Weeks 12, 24, and 48

Measure: The secondary outcome measure is to evaluate changes in BMI (kg/m2) in those treated with DTG/3TC vs. B/F/TAF over time

Time: 12, 24 and 48 weeks

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Description: Change from Baseline in health status using the HIV-Symptoms Index questionnaire (validated 20-item questionnaire which asks subjects to rate the degree of bother they experience for each symptom in the past two weeks, the rating scale for each item ranges from 0-4 with higher values indicating greater symptom distress). This questionnaire will be administered on paper at Weeks 4, 12, 24 and 48 (or Withdrawal from the study)

Measure: The secondary outcome measure is to assess health related quality of life for subjects treated with DTG/3TC compared to B/F/TAF over time using the HIV-Symptoms Index questionnaire

Time: 4, 12, 24 and 48 weeks (or at study withdrawal)

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Description: Change from baseline in treatment satisfaction using the HIV Treatment Satisfaction Questionnaire (validated 10-item questionnaire which asks subjects to rate how satisfied they are with different aspects of their HIV treatment, each item utilizes a rating scale of 0-6 with higher numbers indicating greater satisfaction). This survey will be administered on paper at Weeks 4, and 24 (or withdrawal from the study)

Measure: To assess treatment satisfaction in subjects treated with DTG/3TC compared to B/F/TAF over time using the HIV-Treatment Satisfaction Questionnaire

Time: 4 and 24 weeks (or at study withdrawal)

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Description: to measure the incidence of observed genotypic resistance to ARVs for subjects meeting Virologic Rebound Criteria

Measure: To assess the number of subjects with genotypic mutations affecting any component of the treatment regimen among subjects meeting Virologic Rebound Criteria (HIV-1 RNA≥50 copies/mL X2) using HIV genotypic and ARCHIVE HIV-DNA testing

Time: 48 weeks

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Primary Outcomes

Measure: To evaluate the efficacy and safety of RTG and ABC/3TC over 48 weeks in ART-naive HIV-infected subjects.

Time: 48 weeks

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Secondary Outcomes

Measure: To assess the immunologic response, changes in fasting lipids, renal function, and development of resistance of the study regimen

Time: 48 weeks

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Primary Outcomes

Description: The percentage of participants with Plasma Human Immunodeficiency Virus-1 (HIV-1) <50 c/mL at Week 48 will be assessed using Missing, Switch or Discontinuation = Failure (MSDF), as codified by the Food and Drug Administration (FDA) "snapshot" algorithm. This algorithm treated all participants without HIV-1 RNA data at Week 48 as nonresponders, Otherwise, virologic success or failure will be determined by the last available HIV-1 RNA assessment while the participant was on-treatment in the snapshot window (Week 48 +/- 6 weeks).

Measure: Percentage of patients with HIV-1 RNA levels of less than 50 copies/mL at week 48

Time: 48 weeks

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Secondary Outcomes

Description: The percentage of participants with Plasma Human Immunodeficiency Virus-1 (HIV-1) <400 c/mL at Week 24 will be assessed using Missing, Switch or Discontinuation = Failure (MSDF), as codified by the Food and Drug Administration (FDA) "snapshot" algorithm.

Measure: Percentage of patients with HIV-1 RNA <400 copies/mL at week 24

Time: 24 weeks

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Description: An genotiping test will be made at time to virological failure to detect mutation across reverse transcriptase (RT), and Protease (PRO). Protocol defined virological failure was defined as confirmed plasma HIV-1 RNA levels >=400 copies/mL on or after Week 24 or confirmed plasma HIV-1 RNA levels >=50 copies/mL at week 48

Measure: Number and type of resistance mutations in case of virologic failure

Time: from week 24 to week 48

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Description: Change from Baseline in CD4+ cell counts will be assessed at Weeks 24 and 48.

Measure: CD4+ lymphocyte count and change between baseline (defined as the average between screening and baseline visit values) and weeks 24 and 48

Time: week 24 and 48

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Description: Number of Participants With Abnormal Laboratory Values and/or Adverse Events That Are Related to Treatment

Measure: Frequency, type and severity of adverse events and laboratory abnormalities.

Time: week 24 and 48

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Description: Clinical disease progression (CDP) was assessed according to the Centers for Disease Control and Prevention (CDC) HIV-1 classification system. Category (CAT) A: one or more of the following conditions (CON), without any CON listed in Categories B and C: asymptomatic HIV infection, persistent generalized lymphadenopathy, acute (primary) HIV infection with accompanying illness or history of acute HIV infection. CAT B: symptomatic CON that are attributed to HIV infection or are indicative of a defect in cell-mediated immunity; or that are considered by physicians to have a clinical course or to require management that is complicated by HIV infection; and not included among CON listed in clinical CAT C. CAT C: the clinical CON listed in the AIDS surveillance case definition. Indicators of CDP were defined as: CDC CAT A at Baseline (BS) to a CDC CAT C event (EV); CDC CAT B at BS to a CDC CAT C EV; CDC CAT C at BS to a new CDC CAT C EV; or CDC CAT A, B, or C at BS to death.

Measure: Clinical disease progression (CDP)

Time: week 24 and 48

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Description: The evaluation of quality of life will be done through two validated instruments: the Medical Outcomes Study HIV Health Survey ( MOS - HIV) and EuroQol 5D (EQ - 5D ) . Both instruments will be administered to patients at baseline , week 24 and week 48 .

Measure: Changes in quality of life

Time: baseline, week 24 and week 48

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