Table 2.

Virological End Points

    ITT-E (n = 130)B/F/TAF, 3DR (n = 43)DTG/3TC, 2DR (n = 87)
    Treatment Ratio 3DR/2DRWeek 48 Visit to Baseline RatioWeek 48 Visit to Baseline Ratio
End PointPopulationModelnEstimate95% LCL95% UCLEstimate95% LCL95% UCLEstimate95% LCL95% UCL
Total HIV-1 DNAITT-EMI1300.810.571.150.700.510.950.860.681.09
Total HIV-1 DNAPPMI1200.790.561.100.690.530.910.880.731.06
Total HIV-1 DNAaITT-EMI1300.790.551.140.480.250.930.610.331.14
Intact HIV-1 DNAITT-EMI1301.300.802.111.431.002.051.100.821.49
Intact HIV-1 DNAPPMI1201.300.822.051.350.931.961.040.801.34
Intact HIV-1 DNAaITT-EMI1301.290.782.130.680.301.540.530.251.13
Intact HIV-1 DNAbITT-EMI1301.400.882.221.501.062.141.080.811.43
Intact HIV-1 DNA without DSIITT-EMI1301.310.822.101.491.032.151.130.861.50
Intact HIV-1 DNA without DSIPPMI1201.320.842.091.400.972.031.060.821.37
Intact HIV-1 DNA without DSIaITT-EMI1301.310.802.130.720.321.630.550.261.17
Intact HIV-1 DNA without DSIbITT-EMI1301.420.902.241.571.092.251.110.841.45
Intact HIV-1 DNA DTG/ABC/3TCcITT-EMI491.630.863.101.510.932.450.930.611.41
Intact HIV-1 DNA B/F/TAFdITT-EMI801.070.522.191.340.772.311.250.851.85
TAR copies/µg RNAITT-ECCA741.130.831.551.140.881.471.000.851.18
Long LTR copies/µg RNAITT-ECCA741.110.781.560.970.731.290.870.731.05
Pol copies/µg RNAITT-ECCA740.830.551.250.810.581.140.980.791.22
TAR copies normalizedITT-ECCA741.420.912.211.731.192.501.220.961.54
Long LTR copies normalizedITT-ECCA740.960.681.371.150.851.541.190.981.43
Pol copies normalizedITT-ECCA740.870.571.320.940.661.331.080.871.35
    ITT-E (n = 130)B/F/TAF, 3DR (n = 43)DTG/3TC, 2DR (n = 87)
    Treatment Ratio 3DR/2DRWeek 48 Visit to Baseline RatioWeek 48 Visit to Baseline Ratio
End PointPopulationModelnEstimate95% LCL95% UCLEstimate95% LCL95% UCLEstimate95% LCL95% UCL
Total HIV-1 DNAITT-EMI1300.810.571.150.700.510.950.860.681.09
Total HIV-1 DNAPPMI1200.790.561.100.690.530.910.880.731.06
Total HIV-1 DNAaITT-EMI1300.790.551.140.480.250.930.610.331.14
Intact HIV-1 DNAITT-EMI1301.300.802.111.431.002.051.100.821.49
Intact HIV-1 DNAPPMI1201.300.822.051.350.931.961.040.801.34
Intact HIV-1 DNAaITT-EMI1301.290.782.130.680.301.540.530.251.13
Intact HIV-1 DNAbITT-EMI1301.400.882.221.501.062.141.080.811.43
Intact HIV-1 DNA without DSIITT-EMI1301.310.822.101.491.032.151.130.861.50
Intact HIV-1 DNA without DSIPPMI1201.320.842.091.400.972.031.060.821.37
Intact HIV-1 DNA without DSIaITT-EMI1301.310.802.130.720.321.630.550.261.17
Intact HIV-1 DNA without DSIbITT-EMI1301.420.902.241.571.092.251.110.841.45
Intact HIV-1 DNA DTG/ABC/3TCcITT-EMI491.630.863.101.510.932.450.930.611.41
Intact HIV-1 DNA B/F/TAFdITT-EMI801.070.522.191.340.772.311.250.851.85
TAR copies/µg RNAITT-ECCA741.130.831.551.140.881.471.000.851.18
Long LTR copies/µg RNAITT-ECCA741.110.781.560.970.731.290.870.731.05
Pol copies/µg RNAITT-ECCA740.830.551.250.810.581.140.980.791.22
TAR copies normalizedITT-ECCA741.420.912.211.731.192.501.220.961.54
Long LTR copies normalizedITT-ECCA740.960.681.371.150.851.541.190.981.43
Pol copies normalizedITT-ECCA740.870.571.320.940.661.331.080.871.35

Virological changes after 48 weeks, corrected for baseline response value, CD4 nadir and time on ART. The estimated geometric mean ratio of the groups’ (3DR/2DR) relative change from baseline (week 48/D1) is reported with 95% CI, calculated using an ordinary linear regression model applied to change from baseline in natural log-transformed imputed data (MICE, number of multiple imputations = 50). Analysis was performed on both the ITT-E and PP analysis set. Model for missing data handling: MI and CCA. RNA transcripts were normalized by dividing copies HIV RNA by the geometric mean of 3–4 reference genes per patient (B2M, HPRT1, and YWHAZ for TAR, B2M + HPRT + YWHAZ + TBP for the others). Tat-rev multiple-spliced transcripts (surrogate for productive infection) were undetectable in 91% of the samples.

Abbreviations: 2DR, 2-drug regimen; 3DR, 3-drug regimen; 3TC, lamivudine; ABC, abacavir; ART, antiretroviral therapy; B, bictegravir; CCA, complete case analysis; CI, confidence interval; DSI, DNA shearing index; DTG, dolutegravir; F, emtricitabine; HIV, human immunodeficiency virus; ITT-E, intention to treat exposed; LCL, lower confidence interval limit; LTR, long terminal repeat; MI, multiple imputation; PP, per protocol; TAF, tenofovir alafenamide; TAR, trans-activation response element; UCL, upper confidence interval limit.

aAdditionally corrected for baseline regimen and peak viral load.

bAdditionally corrected for total HIV DNA at baseline.

cAnalysis for the subgroup with DTG/ABC/3TC as baseline regimen.

dAnalysis for the subgroup with B/F/TAF as baseline regimen.

Table 2.

Virological End Points

    ITT-E (n = 130)B/F/TAF, 3DR (n = 43)DTG/3TC, 2DR (n = 87)
    Treatment Ratio 3DR/2DRWeek 48 Visit to Baseline RatioWeek 48 Visit to Baseline Ratio
End PointPopulationModelnEstimate95% LCL95% UCLEstimate95% LCL95% UCLEstimate95% LCL95% UCL
Total HIV-1 DNAITT-EMI1300.810.571.150.700.510.950.860.681.09
Total HIV-1 DNAPPMI1200.790.561.100.690.530.910.880.731.06
Total HIV-1 DNAaITT-EMI1300.790.551.140.480.250.930.610.331.14
Intact HIV-1 DNAITT-EMI1301.300.802.111.431.002.051.100.821.49
Intact HIV-1 DNAPPMI1201.300.822.051.350.931.961.040.801.34
Intact HIV-1 DNAaITT-EMI1301.290.782.130.680.301.540.530.251.13
Intact HIV-1 DNAbITT-EMI1301.400.882.221.501.062.141.080.811.43
Intact HIV-1 DNA without DSIITT-EMI1301.310.822.101.491.032.151.130.861.50
Intact HIV-1 DNA without DSIPPMI1201.320.842.091.400.972.031.060.821.37
Intact HIV-1 DNA without DSIaITT-EMI1301.310.802.130.720.321.630.550.261.17
Intact HIV-1 DNA without DSIbITT-EMI1301.420.902.241.571.092.251.110.841.45
Intact HIV-1 DNA DTG/ABC/3TCcITT-EMI491.630.863.101.510.932.450.930.611.41
Intact HIV-1 DNA B/F/TAFdITT-EMI801.070.522.191.340.772.311.250.851.85
TAR copies/µg RNAITT-ECCA741.130.831.551.140.881.471.000.851.18
Long LTR copies/µg RNAITT-ECCA741.110.781.560.970.731.290.870.731.05
Pol copies/µg RNAITT-ECCA740.830.551.250.810.581.140.980.791.22
TAR copies normalizedITT-ECCA741.420.912.211.731.192.501.220.961.54
Long LTR copies normalizedITT-ECCA740.960.681.371.150.851.541.190.981.43
Pol copies normalizedITT-ECCA740.870.571.320.940.661.331.080.871.35
    ITT-E (n = 130)B/F/TAF, 3DR (n = 43)DTG/3TC, 2DR (n = 87)
    Treatment Ratio 3DR/2DRWeek 48 Visit to Baseline RatioWeek 48 Visit to Baseline Ratio
End PointPopulationModelnEstimate95% LCL95% UCLEstimate95% LCL95% UCLEstimate95% LCL95% UCL
Total HIV-1 DNAITT-EMI1300.810.571.150.700.510.950.860.681.09
Total HIV-1 DNAPPMI1200.790.561.100.690.530.910.880.731.06
Total HIV-1 DNAaITT-EMI1300.790.551.140.480.250.930.610.331.14
Intact HIV-1 DNAITT-EMI1301.300.802.111.431.002.051.100.821.49
Intact HIV-1 DNAPPMI1201.300.822.051.350.931.961.040.801.34
Intact HIV-1 DNAaITT-EMI1301.290.782.130.680.301.540.530.251.13
Intact HIV-1 DNAbITT-EMI1301.400.882.221.501.062.141.080.811.43
Intact HIV-1 DNA without DSIITT-EMI1301.310.822.101.491.032.151.130.861.50
Intact HIV-1 DNA without DSIPPMI1201.320.842.091.400.972.031.060.821.37
Intact HIV-1 DNA without DSIaITT-EMI1301.310.802.130.720.321.630.550.261.17
Intact HIV-1 DNA without DSIbITT-EMI1301.420.902.241.571.092.251.110.841.45
Intact HIV-1 DNA DTG/ABC/3TCcITT-EMI491.630.863.101.510.932.450.930.611.41
Intact HIV-1 DNA B/F/TAFdITT-EMI801.070.522.191.340.772.311.250.851.85
TAR copies/µg RNAITT-ECCA741.130.831.551.140.881.471.000.851.18
Long LTR copies/µg RNAITT-ECCA741.110.781.560.970.731.290.870.731.05
Pol copies/µg RNAITT-ECCA740.830.551.250.810.581.140.980.791.22
TAR copies normalizedITT-ECCA741.420.912.211.731.192.501.220.961.54
Long LTR copies normalizedITT-ECCA740.960.681.371.150.851.541.190.981.43
Pol copies normalizedITT-ECCA740.870.571.320.940.661.331.080.871.35

Virological changes after 48 weeks, corrected for baseline response value, CD4 nadir and time on ART. The estimated geometric mean ratio of the groups’ (3DR/2DR) relative change from baseline (week 48/D1) is reported with 95% CI, calculated using an ordinary linear regression model applied to change from baseline in natural log-transformed imputed data (MICE, number of multiple imputations = 50). Analysis was performed on both the ITT-E and PP analysis set. Model for missing data handling: MI and CCA. RNA transcripts were normalized by dividing copies HIV RNA by the geometric mean of 3–4 reference genes per patient (B2M, HPRT1, and YWHAZ for TAR, B2M + HPRT + YWHAZ + TBP for the others). Tat-rev multiple-spliced transcripts (surrogate for productive infection) were undetectable in 91% of the samples.

Abbreviations: 2DR, 2-drug regimen; 3DR, 3-drug regimen; 3TC, lamivudine; ABC, abacavir; ART, antiretroviral therapy; B, bictegravir; CCA, complete case analysis; CI, confidence interval; DSI, DNA shearing index; DTG, dolutegravir; F, emtricitabine; HIV, human immunodeficiency virus; ITT-E, intention to treat exposed; LCL, lower confidence interval limit; LTR, long terminal repeat; MI, multiple imputation; PP, per protocol; TAF, tenofovir alafenamide; TAR, trans-activation response element; UCL, upper confidence interval limit.

aAdditionally corrected for baseline regimen and peak viral load.

bAdditionally corrected for total HIV DNA at baseline.

cAnalysis for the subgroup with DTG/ABC/3TC as baseline regimen.

dAnalysis for the subgroup with B/F/TAF as baseline regimen.

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