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Study to Evaluate Efficacy and Safety of Darunavir/Cobicistat/Emtricitabine/Tenofovir Alafenamide (D/C/F/TAF) Regimen Versus Boosted Protease Inhibitor (bPI) Along With Emtricitabine/Tenofovir Disoproxil Fumarate (FTC/TDF) Regimen in Virologically-Suppressed, HIV-1 Infected Participants

A Phase 3, Randomized, Active-controlled, Open-label Study to Evaluate the Efficacy, Safety and Tolerability of Switching to a Darunavir/ Cobicistat/ Emtricitabine/ Tenofovir Alafenamide (D/C/F/TAF) Once-daily Single-tablet Regimen Versus Continuing the Current Regimen Consisting of a Boosted Protease Inhibitor (bPI) Combined With Emtricitabine/Tenofovir Disoproxil Fumarate (FTC/TDF) in Virologically-suppressed, Human Immunodeficiency Virus Type 1 (HIV-1) Infected Subjects

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02269917
Enrollment
1149
Registered
2014-10-21
Start date
2015-03-31
Completion date
2020-10-31
Last updated
2021-12-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Human Immunodeficiency Virus Type 1

Keywords

Human Immunodeficiency Virus Type 1, Emerald, Darunavir, Cobicistat, Emtricitabine, Tenofovir Alafenamide

Brief summary

The purpose of this study is to demonstrate non-inferiority in efficacy while switching to a once-daily single-tablet regimen containing darunavir (DRV)/ cobicistat (COBI)/ emtricitabine (FTC)/ tenofovir alafenamide (TAF) (D/C/F/TAF tablet) relative to continuing the current regimen consisting of a boosted protease inhibitor (bPI) combined with tenofovir disoproxil fumarate (FTC/TDF) in virologically-suppressed (human immunodeficiency virus type 1 ribonucleic acid \[HIV-1 RNA\] concentrations less than \[\<\] 50 copies per milliliter \[copies/mL\]) HIV-1 infected participants.

Detailed description

This is a randomized (study medication assigned to participants by chance), active-controlled (study in which the experimental treatment or procedure is compared to a standard treatment or procedure), open-label (participants and researchers are aware about the treatment, participants are receiving), multicenter (when more than 1 hospital or medical school team work on a medical research study), study in virologically-suppressed, HIV-1 infected adult participants. The study will include a Screening Period of approximately 30 days (up to maximum 6 weeks), a controlled Treatment Period of 48 weeks, an Extension Phase of 48 weeks. All eligible participants will be randomly assigned to receive either current treatment regimen - a bPI (limited to DRV with low-dose ritonavir \[rtv\] or COBI, atazanavir \[ATV\] with rtv or COBI, or lopinavir \[LPV\] with rtv) combined with FTC/TDF, or experimental treatment regimen - D/C/F/TAF once-daily single-tablet for 48 weeks. After completion of week 48, participants assigned to the experimental treatment will continue with D/C/F/TAF in the extension phase up to week 96 . Participants who continued their current regimen will receive the experimental treatment (if all criteria are fulfilled) at week 52 up to week 96. As from Week 96, all participants will be given the option to continue D/C/F/TAF treatment, if they wish and if they continue to benefit from it until D/C/F/TAF becomes commercially available and is reimbursed, or can be accessed through another source in the country where he/she is living,or until the sponsor terminates clinical development. A bone investigation substudy will be performed at selected study sites, to assess bone biomarkers and energy x-ray absorptiometry (DXA) scans, in approximately 300 participants (200 in the D/C/F/TAF treatment arm versus 100 in the control arm) who provide informed consent for the substudy.

Interventions

Once-daily single-tablet regimen containing darunavir (DRV) 800 milligram (mg)/ cobicistat (COBI) 150 mg/ emtricitabine (FTC) 200 mg/ tenofovir alafenamide (TAF) 10 mg.

DRUGBoosted Protease Inhibitor (bPI)

Boosted protease inhibitor (limited to darunavir \[DRV\] or atazanavir with low-dose ritonavir \[rtv\] or cobicistat \[COBI\], or lopinavir with rtv) as per current treatment regimen.

DRUGFTC/TDF

Emtricitabine/tenofovir disoproxil fumarate (FTC/TDF).

Sponsors

Janssen R&D Ireland
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Currently being treated with a stable antiretroviral (ARV) regimen consisting of a boosted protease inhibitor (limited to darunavir \[DRV\] or atazanavir with low-dose ritonavir \[rtv\] or cobicistat \[COBI\], or lopinavir with rtv) combined with emtricitabine/tenofovir disoproxil fumarate (FTC/TDF) only, for at least 6 consecutive months preceding the Screening visit * On-treatment plasma human immunodeficiency virus type 1 ribonucleic acid (HIV-1 RNA) concentrations less than (\<) 50 copies per milliliter (copies/mL) or HIV-1 RNA undetectable by a local HIV-1 RNA test between 12 and 2 months prior to the Screening visit and have HIV-1 RNA \<50 copies/mL at the Screening visit * A single virologic elevation of greater than or equal to (\>=) 50 copies/mL after previously reaching viral suppression between 12 and 2 months prior to Screening is acceptable, provided a subsequent test prior to Screening was \<50 copies/mL * Absence of history of failure on DRV treatment and absence of DRV resistance-associated mutations (RAMs), if documented historical genotypes are available * Normal electrocardiogram (ECG) at Screening (or if abnormal, determined by the Investigator to be not clinically significant)

Exclusion criteria

* A new acquired immunodeficiency syndrome (AIDS) - defining condition diagnosed within the 30 days prior to Screening * Proven or suspected acute hepatitis within 30 days prior to study entry * Hepatitis C antibody positive; however, participants previously cured of hepatitis C virus (HCV) infection, with documented sustained virologic response, that is, undetectable HCV RNA 24 weeks after the last dose of HCV treatment, are allowed to participate * Hepatitis B surface antigen (HBsAg) positive * Participants with cirrhosis as diagnosed based on local practices

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 48Through Week 48Virologic rebound was defined as: confirmed plasma human immunodeficiency virus - 1 (HIV-1) Ribonucleic Acid (RNA) level greater than or equal to (\>=)50 copies per milliliter (copies/mL) up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=50 copies/mL at premature discontinuation (irrespective of reason). Percentage of participants with virologic rebound were reported.

Secondary

MeasureTime frameDescription
Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=200 Copies/mL) Cumulative Through 48 WeeksThrough 48 WeeksVirologic rebound was defined as: confirmed plasma HIV-1 RNA \>=200 copies/mL up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=200 copies/mL at premature discontinuation (irrespective of reason). Percentage of participants with virologic rebound were reported.
Percentage of Participants With Non-Virologic Rebound at Week 48 by Kaplan-Meier EstimatesBaseline up to Week 48Virologic rebound was defined as: confirmed plasma HIV-1 RNA \>=50 copies/mL up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=50 copies/mL at premature discontinuation (irrespective of reason). Here Kaplan-Meier estimates percentage of participants with non-virologic rebound at week 48.
Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48Up to Week 48An AE is any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. Grade 3 (Severe) events were symptoms causing inability to perform usual social & functional activities. Grade 4 (Life-threatening) events were symptoms causing inability to perform basic self-care functions or medical or operative intervention indicated to prevent permanent impairment, persistent disability, or death.
Change From Baseline in Serum Creatinine Levels at Weeks 24 and 48Baseline and Weeks 24 and 48Change from baseline in serum creatinine levels at Weeks 24 and 48 was assessed.
Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Weeks 24 and 48Baseline, Weeks 24 and 48Change from baseline in eGFRcr (by Cockcroft-Gault formula) was assessed at Weeks 24 and 48. eGFRcr according to the Cockcroft Gault formula- Male: (140 - age in years)\*(weight in kilogram \[kg\])/72\*(serum creatinine in milligram per deciliter \[mg/dL\])=eGFRcr (milliliter per minute \[mL/min\]); Female: (140 - age in years)\*(weight in kg)/72\*(serum creatinine in mg/dL)\*0.85=eGFRcr (mL/min).
Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48Baseline, Weeks 24 and 48Change from baseline in eGFRcr (by CKD-EPI) was assessed at Weeks 24 and 48. eGFRcr per CKD-EPI formula - Female: 1) Serum creatinine (Scr) less than or equal to (\<=)0.7 mg/dL: 144\*(Scr/0.7)\^-0.329\*0.993age; 2) Scr greater than (\>)0.7 mg/dL: 144\*(Scr/0.7)\^-1.209\*0.993age. Male: 1) Scr \<=0.9 mg/dL: 141\*(Scr/0.9)\^-0.411\*0.993age; 2) Scr \>0.9 mg/dL: 141\*(Scr/0.9)\^-1.209\*0.993age.
Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (eGFRcyst, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48Baseline, Weeks 24 and 48Change from baseline in eGFRcyst (by CKD-EPI) was assessed at Weeks 24 and 48. eGFRcyst according to the CKD-EPI formula - 1) Serum Cystatin C (Scyst) \<=0.8 mg/L: 133\*(Scyst/0.8)\^-0.499\*0.996age (\*0.932 if female); 2) Scyst \>0.8 mg/L: 133\*(Scyst/0.8)\^-1.328\*0.996age (\*0.932 if female).
Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48Baseline, Weeks 24 and 48Change from baseline in UACR and UPCR was assessed at Weeks 24 and 48. Lower levels of albumin or protein in the urine indicates better proximal tubular function.
Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48Baseline, Weeks 24 and 48Change from baseline in URBPCR and UB2MGCR was assessed at Weeks 24 and 48. Retinol binding protein is a marker of proximal tubular function.
Percent Change From Baseline in Urine Fractional Excretion of Phosphate (FEPO4) at Weeks 24 and 48Baseline, Weeks 24 and 48Percent change from baseline in urine FEPO4 was assessed at Weeks 24 and 48.
Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot ApproachWeek 48Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 48 using FDA snapshot approach. FDA Snapshot approach analysis was based on the last observed viral load data: virologic response was defined as HIV-1 RNA \<20/50/200 copies/mL (observed case).
Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) AlgorithmWeek 48Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 48 using TLOVR algorithm approach. TLOVR was defined as sustained HIV-1 RNA \<20/50/200 copies/mL.
Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48Baseline, Weeks 24 and 48Change from baseline in CD4+ cell count was assessed at Weeks 24 and 48.
Percentage of Participants With Treatment Adherence of Greater Than (>)95 Percent (%) (Approach 1) Through Week 48Through Week 48Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative through Week 48 (Approach 1).
Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 48Through Week 48Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative treatment adherence up to time point where not more than one bottle was missing, or if available, through Week 48, whichever came sooner (Approach 2).
Number of Participants With Resistance to Study DrugUp to Week 48HIV-1 genotypes were analyzed from samples of participants with confirmed virologic rebound (virologic rebound was defined as: confirmed HIV-1 RNA \>=50 copies/mL up to, and including the upper bound of the Week 48 window) and with HIV-1 RNA value \>=400 copies/mL or who discontinued with last HIV-1 RNA \>=400 copies/mL. Number of participants who developed resistance to any of the study drug was determined.
Predose (Trough) Plasma Concentration (C0h) of DarunavirPredose at Weeks 2, 4, 8, 12, 24, 36, and 48Predose (trough) plasma concentration (C0h) of darunavir was determined. Pharmacokinetic (PK) data was only analyzed for participants in the D/C/F/TAF group as per planned analysis.
Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48Baseline, Weeks 24 and 48Percent change from baseline in bone biomarkers: P1NP and CTX was assessed at Weeks 24 and 48.
Percent Change From Baseline in Parathyroid Hormone (PTH) at Weeks 24 and 48Baseline, Weeks 24 and 48Percent change from baseline in bone biomarker: PTH was assessed at Weeks 24 and 48.
Percent Change From Baseline in 25-hydroxy Vitamin D at Weeks 24 and 48Baseline, Weeks 24 and 48Percent change from baseline in bone biomarker: 25-hydroxy vitamin D was assessed at Weeks 24 and 48.
Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Baseline, Weeks 24 and 48Percent change from baseline in spine and hip BMD was assessed at Weeks 24 and 48.
Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Baseline, Weeks 24 and 48Change from baseline in spine, hip, and femoral neck BMD T-Score was assessed at Week 24 and 48. T-score values \>= -1.0 were considered normal, T-score values \< -1.0 to -2.5 indicate osteopenia and T-score values \< -2.5 indicate osteoporosis.
Percentage of Participants With Virologic Rebound (HIV-1 RNA >=20 Copies/mL) Cumulative Through Week 96Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=20 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=20 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=20 copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Percentage of participants with virologic rebound were reported.
Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 96Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=50 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=50 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=50copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Percentage of participants with virologic rebound were reported.
Percentage of Participants With Virologic Rebound (HIV-1 RNA >=200 Copies/mL) Cumulative Through Week 96Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=200 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=200 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=200 copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Percentage of participants with virologic rebound were reported.
Percentage of Participants With Non-Virologic Rebound at Week 96 by Kaplan-Meier EstimatesBaseline to Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)Here Kaplan-Meier estimates percentage of participants with non-virologic rebound at Week 96.
Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot ApproachWeek 96 (Comprising up to Week 96 for D/C/F/TAF and 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52 up to Week 96])Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 96 using FDA snapshot approach. FDA Snapshot approach analysis was based on the last observed viral load data: virologic response was defined as having last available HIV-1 RNA \<20/50/200 copies/mL (observed case).
Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR AlgorithmWeek 96 (Comprising up to Week 96 for D/C/F/TAF and 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52 up to Week 96])Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 96 using TLOVR algorithm approach. TLOVR was defined as sustained HIV-1 RNA \<20/50/200 copies/mL.
Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot ApproachWeek 96 (Comprising up to Week 96 for D/C/F/TAF and 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52 up to Week 96])Percentage of participants with virologic failure based on HIV-1 RNA \>=20, \>=50, and \>=200 copies/mL threshold were analyzed at Week 96 using FDA snapshot approach. FDA Snapshot approach analysis was based on the last observed viral load data: virologic failure was defined by the FDA snapshot approach as having last available HIV-1 RNA \>=20/50/200 copies/mL at Week 96; virologic failure - leading to discontinuation; virologic failure - discontinued due to other reason and last available HIV-1 RNA \>=20/50/200 copies/mL.
Change From Reference in CD4+ Cell Count at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF (Comprising 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52])Change from reference in CD4+ cell count was assessed at Week 96. The change from reference in CD4+ count at a given time point is defined as: CD4+ at a given time point minus reference CD4+. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Number of Participants With Resistance to Study Drug Through Week 96Through Week 96 (D/C/F/TAF arm), up to Week 48 (Control arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)HIV-1 genotypes were analyzed from samples of participants with confirmed virologic rebound in case they had HIV-1 RNA values \>=400 copies/mL at failure or at later time points, including participants who discontinued with last HIV-1 RNA \>=400 copies/mL. Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=20 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=20 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=20 copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Number of participants who developed resistance to any of the study drug (DRV, FTC, and TFV/TAF) were reported.
Percentage of Participants With Treatment Adherence of >95 (Approach 1) Through Week 96Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative through Week 96 (Approach 1).
Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 96Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative treatment adherence up to time point where not more than one bottle was missing, or if available, through Week 96, whichever came sooner (Approach 2).
Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)AE is any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. Grade 3 (Severe) events were symptoms causing inability to perform usual social & functional activities. Grade 4 (Life-threatening) events were symptoms causing inability to perform basic self-care functions or medical or operative intervention indicated to prevent permanent impairment, persistent disability, or death. SAE is any AE that results in: death, persistent or significant disability/incapacity, requires inpatient hospitalization or prolongation of existing hospitalization, is life-threatening experience, is a congenital anomaly/birth defect and may jeopardize participant and/or may require medical or surgical intervention to prevent one of the outcomes listed above.
Change From Reference in Serum Creatinine Levels at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in serum creatinine levels at Week 96 was assessed. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in eGFRcr (by Cockcroft-Gault formula) was assessed at Week 96. eGFRcr according to the Cockcroft Gault formula- Male: (140 - age in years)\*(weight in kilogram \[kg\])/72\*(serum creatinine in milligram per deciliter \[mg/dL\])=eGFRcr (milliliter per minute \[mL/min\]); Female: (140 - age in years)\*(weight in kg)/72\*(serum creatinine in mg/dL)\*0.85=eGFRcr (mL/min). For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (by CKD-EPI) at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in eGFRcr (by CKD-EPI) was assessed at Week 96. eGFRcr per CKD-EPI formula - Female: 1) Serum creatinine (Scr) less than or equal to (\<=)0.7 mg/dL: 144\*(Scr/0.7)\^-0.329\*0.993\^age; 2) Scr greater than (\>)0.7 mg/dL: 144\*(Scr/0.7)\^-1.209\*0.993\^age. Male: 1) Scr \<=0.9 mg/dL: 141\*(Scr/0.9)\^-0.411\*0.993\^age; 2) Scr \>0.9 mg/dL: 141\*(Scr/0.9)\^-1.209\*0.993\^age. . For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (by CKD-EPI) at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in eGFRcyst (by CKD-EPI) was assessed at Week 96. eGFRcyst according to the CKD-EPI formula - 1) Serum Cystatin C (Scyst) \<=0.8 mg/L: 133\*(Scyst/0.8)\^-0.499\*0.996\^age (\*0.932 if female); 2) Scyst \>0.8 mg/L: 133\*(Scyst/0.8)\^-1.328\*0.996\^age (\*0.932 if female). For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Change From Reference in UACR at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in UACR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Change From Reference in URBPCR at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in URBPCR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Change From Reference in UPCR at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in UPCR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Change From Reference in UB2MGCR at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFChange from reference in UB2MGCR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Percent Change From Reference in FEPO4 at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFPercent change from reference in FEPO4 at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Percent Change From Reference in Levels of Serum P1NP at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFPercent change from reference in serum P1NP levels at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Percent Change From Reference in Levels of Serum CTX at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFPercent change from reference in serum CTX at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Percent Change From Reference in Levels of PTH at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFPercent change from reference in PTH at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Percent Change From Reference in Levels of 25-OH Vitamin D at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFPercent change from reference in 25-OH Vitamin D at Week 96 were reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Percent Change From Reference in Hip and Spine BMD at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFThe BMD is the amount of mineral in gram per square centimeter of bone, which was assessed by DXA scan. Positive values are best values and negative values are worst values of change. Percent change from reference in hip and spine BMD was assessed. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).
Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=20 Copies/mL) Cumulative Through 48 WeeksThrough 48 WeeksVirologic rebound was defined as: confirmed plasma HIV-1 RNA \>=20 copies/mL up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=20 copies/mL at premature discontinuation (irrespective of reason). Percentage of participants with virologic rebound were reported.
Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 to end of extension (at every 6 months, up to 42 months)Virologic rebound is defined as participants who show confirmed HIV-1 RNA \>=50 copies/mL, or for which the last available (single) HIV-1 RNA value on treatment was \>=50 copies/mL. Here, Kaplan-Meier estimates (%) of non-virologic rebound at every 6 months interval are presented.
Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 to end of extension (up to 42 months)Percentage of participants with non-treatment failure by Kaplan-Meier Estimates were reported. Treatment failure was defined as having either protocol-defined virologic rebound or having discontinued for reasons other than alternate access to D/C/F/TAF (or other antiretroviral \[ARV\]).
Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 to end of extension (up to 42 months)Percentage of participants with HIV RNA \<50, \<20, \<200 copies/mL post Week 96 to end of extension were reported.
CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 to end of extension (up to 42 months)The immunologic change was determined by Cluster of CD4+ cell count. CD4+ cell count post-Week 96 to end of extension were assessed.
Percentage of Participants With Treatment Adherence of >95% From Week 96 to End of ExtensionWeek 96 to end of extension (up to 42 months)Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability and was calculated cumulative from start of treatment/switch to last study drug intake by determination of the cumulative treatment adherence in participants who returned all dispensed bottles prior to or at the last visit in the study from Week 96 to end of extension.
Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionFrom Week 96 to end of extension (up to 42 months)AE is any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. Grade 3 (Severe) events were symptoms causing inability to perform usual social & functional activities. Grade 4 (Life-threatening) events were symptoms causing inability to perform basic self-care functions or medical or operative intervention indicated to prevent permanent impairment, persistent disability, or death. SAE is any AE that results in: death, persistent or significant disability/incapacity, requires inpatient hospitalization or prolongation of existing hospitalization, is life-threatening experience, is a congenital anomaly/birth defect and may jeopardize participant and/or may require medical or surgical intervention to prevent one of the outcomes listed above.
Change From Reference in BMD T-score of Hip and Spine at Week 96From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAFBMD status was assessed using BMD T-scores; normal bone status was defined by a BMD T-score \>= -1, osteopenia by a T-score \>= -2.5 to \<-1.0, and osteoporosis by a T-score \<-2.5. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Countries

Belgium, Canada, France, Poland, Puerto Rico, Spain, Sweden, Switzerland, United Kingdom, United States

Participant flow

Participants by arm

ArmCount
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])
Participants received a single fixed dose combination (FDC) tablet containing darunavir (DRV) 800 milligram (mg)/ cobicistat (COBI) 150 mg/ emtricitabine (FTC) 200 mg/ tenofovir alafenamide (TAF) 10 mg (D/C/F/TAF tablet), orally once daily up to Week 48. After Week 48, all participants continued to receive D/C/F/TAF treatment (that is, initial switch to D/C/F/TAF group) up to Week 96. After Week 96, participants were given the opportunity to continue D/C/F/TAF treatment until D/C/F/TAF became commercially available up to 42 months (end of extension).
763
Control (Baseline to Switch)
Participants received a boosted protease inhibitor (bPI) (limited to darunavir \[DRV\] or atazanavir with low-dose ritonavir \[rtv\] or cobicistat \[COBI\], or lopinavir with rtv) combined with emtricitabine/tenofovir disoproxil fumarate (F/TDF) up to Week 48.
378
Total1,141

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
BL to EOE-Test and BL to Switch-ControlAdverse Event2440
BL to EOE-Test and BL to Switch-ControlDeath400
BL to EOE-Test and BL to Switch-ControlLost to Follow-up2570
BL to EOE-Test and BL to Switch-ControlNon-compliance with study drug400
BL to EOE-Test and BL to Switch-ControlOther1940
BL to EOE-Test and BL to Switch-ControlPhysician Decision400
BL to EOE-Test and BL to Switch-ControlProtocol Violation210
BL to EOE-Test and BL to Switch-ControlRandomized but not treated350
BL to EOE-Test and BL to Switch-ControlWithdrawal by Subject32100
Switch to D/C/F/TAF (Until EOE)Adverse Event0011
Switch to D/C/F/TAF (Until EOE)Death001
Switch to D/C/F/TAF (Until EOE)Lost to Follow-up0010
Switch to D/C/F/TAF (Until EOE)Other008
Switch to D/C/F/TAF (Until EOE)Physician Decision001
Switch to D/C/F/TAF (Until EOE)Pregnancy002
Switch to D/C/F/TAF (Until EOE)Withdrawal by Subject005

Baseline characteristics

CharacteristicControl (Baseline to Switch)TotalD/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])
Age, Continuous44.8 years
STANDARD_DEVIATION 10.77
45.1 years
STANDARD_DEVIATION 10.83
45.3 years
STANDARD_DEVIATION 10.86
Ethnicity (NIH/OMB)
Hispanic or Latino
59 Participants170 Participants111 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
317 Participants966 Participants649 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants5 Participants3 Participants
Race/Ethnicity, Customized
Asian
9 Participants26 Participants17 Participants
Race/Ethnicity, Customized
Black or African American
82 Participants237 Participants155 Participants
Race/Ethnicity, Customized
Hispanic or Latino
56 Participants151 Participants95 Participants
Race/Ethnicity, Customized
Other
6 Participants26 Participants20 Participants
Race/Ethnicity, Customized
White Non-Hispanic
225 Participants701 Participants476 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants7 Participants5 Participants
Race (NIH/OMB)
Asian
9 Participants26 Participants17 Participants
Race (NIH/OMB)
Black or African American
82 Participants237 Participants155 Participants
Race (NIH/OMB)
More than one race
1 Participants6 Participants5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants2 Participants2 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants8 Participants6 Participants
Race (NIH/OMB)
White
282 Participants855 Participants573 Participants
Region of Enrollment
Belgium
20 Participants52 Participants32 Participants
Region of Enrollment
Canada
21 Participants66 Participants45 Participants
Region of Enrollment
France
28 Participants97 Participants69 Participants
Region of Enrollment
Poland
35 Participants126 Participants91 Participants
Region of Enrollment
Spain
52 Participants169 Participants117 Participants
Region of Enrollment
Sweden
5 Participants28 Participants23 Participants
Region of Enrollment
Switzerland
13 Participants39 Participants26 Participants
Region of Enrollment
United Kingdom
23 Participants70 Participants47 Participants
Region of Enrollment
United States
181 Participants494 Participants313 Participants
Sex: Female, Male
Female
65 Participants205 Participants140 Participants
Sex: Female, Male
Male
313 Participants936 Participants623 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
4 / 7630 / 3781 / 352
other
Total, other adverse events
584 / 763222 / 378213 / 352
serious
Total, serious adverse events
114 / 76318 / 37842 / 352

Outcome results

Primary

Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 48

Virologic rebound was defined as: confirmed plasma human immunodeficiency virus - 1 (HIV-1) Ribonucleic Acid (RNA) level greater than or equal to (\>=)50 copies per milliliter (copies/mL) up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=50 copies/mL at premature discontinuation (irrespective of reason). Percentage of participants with virologic rebound were reported.

Time frame: Through Week 48

Population: Intent-to-treat (ITT) analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 482.5 Percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 482.1 Percentage of participants
p-value: <0.00195% CI: [-1.5, 2.2]Stratum-adjusted Mantel-Haenszel (MH)
Secondary

CD4+ Cell Count Post-Week 96 to End of Extension

The immunologic change was determined by Cluster of CD4+ cell count. CD4+ cell count post-Week 96 to end of extension were assessed.

Time frame: Week 96 to end of extension (up to 42 months)

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment in the study. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure and n (number analyzed) signifies participants analyzed at specified timepoints

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 30 months730.4 cells/mm^3Standard Error 23.24
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 24 months712.7 cells/mm^3Standard Error 15.98
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 12 months707.6 cells/mm^3Standard Error 11.93
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 36 months732.0 cells/mm^3Standard Error 33.1
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 6 months706.4 cells/mm^3Standard Error 10.51
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 42 months714.3 cells/mm^3Standard Error 56.26
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 18 months713.3 cells/mm^3Standard Error 12.16
Control (Baseline to Switch)CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 42 months705.6 cells/mm^3Standard Error 112.99
Control (Baseline to Switch)CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 6 months681.3 cells/mm^3Standard Error 14.99
Control (Baseline to Switch)CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 12 months676.2 cells/mm^3Standard Error 14.57
Control (Baseline to Switch)CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 18 months686.1 cells/mm^3Standard Error 17.05
Control (Baseline to Switch)CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 30 months685.8 cells/mm^3Standard Error 28.61
Control (Baseline to Switch)CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 36 months733.3 cells/mm^3Standard Error 54.73
Control (Baseline to Switch)CD4+ Cell Count Post-Week 96 to End of ExtensionWeek 96 + 24 months686.4 cells/mm^3Standard Error 21.2
Secondary

Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48

Change from baseline in spine, hip, and femoral neck BMD T-Score was assessed at Week 24 and 48. T-score values \>= -1.0 were considered normal, T-score values \< -1.0 to -2.5 indicate osteopenia and T-score values \< -2.5 indicate osteoporosis.

Time frame: Baseline, Weeks 24 and 48

Population: The bone investigation substudy (BIS) analysis set included all participants who were randomized and received at least 1 dose of study drug in the study, and had at least one postbaseline value for BMD data. Here 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Spine BMD T-score: Change at Week 240.102 Units on a scaleStandard Error 0.0172
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Hip BMD T-score: Change at Week 480.095 Units on a scaleStandard Error 0.0122
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Hip BMD T-score: Baseline-0.575 Units on a scaleStandard Error 0.0643
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Femoral Neck BMD T-score: Baseline-0.782 Units on a scaleStandard Error 0.0625
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Spine BMD T-score: Change at Week 480.132 Units on a scaleStandard Error 0.0217
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Femoral Neck BMD T-score: Change at Week 240.019 Units on a scaleStandard Error 0.0128
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Hip BMD T-score: Change at Week 240.037 Units on a scaleStandard Error 0.0108
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Femoral Neck BMD T-score: Change at Week 480.039 Units on a scaleStandard Error 0.0146
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Spine BMD T-score: Baseline-0.713 Units on a scaleStandard Error 0.085
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Femoral Neck BMD T-score: Change at Week 48-0.039 Units on a scaleStandard Error 0.0214
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Spine BMD T-score: Baseline-0.467 Units on a scaleStandard Error 0.126
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Spine BMD T-score: Change at Week 24-0.033 Units on a scaleStandard Error 0.0253
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Spine BMD T-score: Change at Week 48-0.063 Units on a scaleStandard Error 0.0264
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Hip BMD T-score: Baseline-0.484 Units on a scaleStandard Error 0.0839
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Hip BMD T-score: Change at Week 24-0.024 Units on a scaleStandard Error 0.0144
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Hip BMD T-score: Change at Week 48-0.016 Units on a scaleStandard Error 0.0139
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Femoral Neck BMD T-score: Baseline-0.699 Units on a scaleStandard Error 0.0899
Control (Baseline to Switch)Change From Baseline in Bone Mineral Density (BMD) T-Score at Weeks 24 and 48Femoral Neck BMD T-score: Change at Week 24-0.044 Units on a scaleStandard Error 0.0183
Secondary

Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48

Change from baseline in CD4+ cell count was assessed at Weeks 24 and 48.

Time frame: Baseline, Weeks 24 and 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48Change at Week 4821.0 Cells per cubic millimeter (cells/mm^3)Standard Error 5.97
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48Baseline653.3 Cells per cubic millimeter (cells/mm^3)Standard Error 9.12
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48Change at Week 2414.3 Cells per cubic millimeter (cells/mm^3)Standard Error 5.99
Control (Baseline to Switch)Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48Change at Week 248.5 Cells per cubic millimeter (cells/mm^3)Standard Error 7.76
Control (Baseline to Switch)Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48Change at Week 489.1 Cells per cubic millimeter (cells/mm^3)Standard Error 8.41
Control (Baseline to Switch)Change From Baseline in Cluster of Differentiation 4 Plus (CD4+) Cell Count at Weeks 24 and 48Baseline641.7 Cells per cubic millimeter (cells/mm^3)Standard Error 13.15
Secondary

Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48

Change from baseline in eGFRcr (by CKD-EPI) was assessed at Weeks 24 and 48. eGFRcr per CKD-EPI formula - Female: 1) Serum creatinine (Scr) less than or equal to (\<=)0.7 mg/dL: 144\*(Scr/0.7)\^-0.329\*0.993age; 2) Scr greater than (\>)0.7 mg/dL: 144\*(Scr/0.7)\^-1.209\*0.993age. Male: 1) Scr \<=0.9 mg/dL: 141\*(Scr/0.9)\^-0.411\*0.993age; 2) Scr \>0.9 mg/dL: 141\*(Scr/0.9)\^-1.209\*0.993age.

Time frame: Baseline, Weeks 24 and 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates number of participants evaluable for this endpoint; and 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48Change at Week 24-1.67 mL/min/1.73 m^2Standard Error 0.359
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48Change at Week 48-1.97 mL/min/1.73 m^2Standard Error 0.369
Control (Baseline to Switch)Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48Change at Week 48-0.88 mL/min/1.73 m^2Standard Error 0.531
Control (Baseline to Switch)Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48Change at Week 24-0.75 mL/min/1.73 m^2Standard Error 0.51
Comparison: Change at Week 24p-value: =0.14395% CI: [-2.14, 0.31]ANCOVA
Comparison: Change at Week 48p-value: =0.09295% CI: [-2.36, 0.18]ANCOVA
Secondary

Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Weeks 24 and 48

Change from baseline in eGFRcr (by Cockcroft-Gault formula) was assessed at Weeks 24 and 48. eGFRcr according to the Cockcroft Gault formula- Male: (140 - age in years)\*(weight in kilogram \[kg\])/72\*(serum creatinine in milligram per deciliter \[mg/dL\])=eGFRcr (milliliter per minute \[mL/min\]); Female: (140 - age in years)\*(weight in kg)/72\*(serum creatinine in mg/dL)\*0.85=eGFRcr (mL/min).

Time frame: Baseline, Weeks 24 and 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates number of participants evaluable for this endpoint; and 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Weeks 24 and 48Change at Week 24-0.38 milliliter per minute (mL/min)Standard Error 0.502
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Weeks 24 and 48Change at Week 48-0.94 milliliter per minute (mL/min)Standard Error 0.492
Control (Baseline to Switch)Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Weeks 24 and 48Change at Week 240.20 milliliter per minute (mL/min)Standard Error 0.715
Control (Baseline to Switch)Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Weeks 24 and 48Change at Week 48-0.20 milliliter per minute (mL/min)Standard Error 0.708
Comparison: Change at Week 24p-value: =0.50695% CI: [-2.3, 1.13]ANCOVA
Comparison: Change Week 48p-value: =0.39295% CI: [-2.43, 0.95]ANCOVA
Secondary

Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (eGFRcyst, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48

Change from baseline in eGFRcyst (by CKD-EPI) was assessed at Weeks 24 and 48. eGFRcyst according to the CKD-EPI formula - 1) Serum Cystatin C (Scyst) \<=0.8 mg/L: 133\*(Scyst/0.8)\^-0.499\*0.996age (\*0.932 if female); 2) Scyst \>0.8 mg/L: 133\*(Scyst/0.8)\^-1.328\*0.996age (\*0.932 if female).

Time frame: Baseline, Weeks 24 and 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (eGFRcyst, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48eGFRcyst: Change at Week 240.21 mL/min/1.73 m^2Standard Error 0.338
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (eGFRcyst, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48eGFRcyst: Change at Week 48-0.42 mL/min/1.73 m^2Standard Error 0.36
Control (Baseline to Switch)Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (eGFRcyst, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48eGFRcyst: Change at Week 24-0.93 mL/min/1.73 m^2Standard Error 0.483
Control (Baseline to Switch)Change From Baseline in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (eGFRcyst, by Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]) at Weeks 24 and 48eGFRcyst: Change at Week 48-1.76 mL/min/1.73 m^2Standard Error 0.517
Comparison: Change at Week 24p-value: =0.05495% CI: [-0.02, 2.29]ANCOVA
Comparison: Change at Week 48p-value: =0.03495% CI: [0.1, 2.57]ANCOVA
Secondary

Change From Baseline in Serum Creatinine Levels at Weeks 24 and 48

Change from baseline in serum creatinine levels at Weeks 24 and 48 was assessed.

Time frame: Baseline and Weeks 24 and 48

Population: ITT analysis set included all participants randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates number of participants evaluable for this endpoint; and 'n' specifies participants analyzed for this endpoint at given time point.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Serum Creatinine Levels at Weeks 24 and 48Change at Week 241.22 micro mole per literStandard Error 0.358
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Serum Creatinine Levels at Weeks 24 and 48Change at Week 481.27 micro mole per literStandard Error 0.368
Control (Baseline to Switch)Change From Baseline in Serum Creatinine Levels at Weeks 24 and 48Change at Week 240.88 micro mole per literStandard Error 0.509
Control (Baseline to Switch)Change From Baseline in Serum Creatinine Levels at Weeks 24 and 48Change at Week 480.65 micro mole per literStandard Error 0.53
Comparison: Change at Week 24p-value: =0.5895% CI: [-0.88, 1.57]ANCOVA
Comparison: Change at Week 48p-value: =0.3495% CI: [-0.65, 1.88]ANCOVA
Secondary

Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48

Change from baseline in UACR and UPCR was assessed at Weeks 24 and 48. Lower levels of albumin or protein in the urine indicates better proximal tubular function.

Time frame: Baseline, Weeks 24 and 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates number of participants evaluable for this endpoint; and 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UACR: Baseline6.20 milligram per gram (mg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UACR: Change at Week 24-0.78 milligram per gram (mg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UACR: Change at Week 48-0.76 milligram per gram (mg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UPCR: Baseline61.56 milligram per gram (mg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UPCR: Change at Week 24-14.63 milligram per gram (mg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UPCR: Change at Week 48-22.25 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UPCR: Change at Week 240.07 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UACR: Baseline7.14 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UPCR: Baseline62.90 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UACR: Change at Week 240.44 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UPCR: Change at Week 48-7.37 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Baseline in Urine Albumin to Creatinine Ratio (UACR) and Urine Protein to Creatinine Ratio (UPCR) at Weeks 24 and 48UACR: Change at Week 480.40 milligram per gram (mg/g)
Comparison: UACR - Change at Week 24p-value: <0.001Van Elteren Test
Comparison: UACR - Change at Week 48p-value: <0.001Van Elteren Test
Comparison: UPCR - Change at Week 24p-value: <0.001Van Elteren Test
Comparison: UPCR - Change at Week 48p-value: <0.001Van Elteren Test
Secondary

Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48

Change from baseline in URBPCR and UB2MGCR was assessed at Weeks 24 and 48. Retinol binding protein is a marker of proximal tubular function.

Time frame: Baseline, Weeks 24 and 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates number of participants evaluable for this endpoint; and 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48URBPCR: Baseline126.19 microgram per gram (mcg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48URBPCR: Change at Week 24-30.27 microgram per gram (mcg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48URBPCR: Change at Week 48-27.09 microgram per gram (mcg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48UB2MGCR: Baseline156.85 microgram per gram (mcg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48UB2MGCR: Change at Week 24-72.64 microgram per gram (mcg/g)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48UB2MGCR: Change at Week 48-67.02 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48UB2MGCR: Change at Week 4820.24 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48URBPCR: Baseline137.16 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48UB2MGCR: Baseline172.25 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48URBPCR: Change at Week 247.76 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48UB2MGCR: Change at Week 2412.08 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Baseline in Urine Retinol Binding Protein to Creatinine Ratio (URBPCR) and Urine Beta-2 Microglobulin to Creatinine Ratio (UB2MGCR) at Weeks 24 and 48URBPCR: Change at Week 4819.66 microgram per gram (mcg/g)
Comparison: URBPCR: Change at Week 24p-value: <0.001Van Elteren Test
Comparison: URBPCR: Change at Week 48p-value: <0.001Van Elteren Test
Comparison: UB2MGCR: Change at Week 24p-value: <0.001Van Elteren Test
Comparison: UB2MGCR: Change at Week 48p-value: <0.001Van Elteren Test
Secondary

Change From Reference in BMD T-score of Hip and Spine at Week 96

BMD status was assessed using BMD T-scores; normal bone status was defined by a BMD T-score \>= -1, osteopenia by a T-score \>= -2.5 to \<-1.0, and osteoporosis by a T-score \<-2.5. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: BIS analysis set included all participants who were randomized, received at least 1 dose of study drug in study and had at least one post-baseline value for either biomarker/BMD data. Here, N (number of participants analyzed) indicates number of participants evaluable for this outcome measure; and 'n' specifies participants analyzed for specified categories.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in BMD T-score of Hip and Spine at Week 96Hip region BMD0.122 units on a scaleStandard Error 0.0154
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in BMD T-score of Hip and Spine at Week 96Spine region BMD0.176 units on a scaleStandard Error 0.0259
Control (Baseline to Switch)Change From Reference in BMD T-score of Hip and Spine at Week 96Hip region BMD0.077 units on a scaleStandard Error 0.023
Control (Baseline to Switch)Change From Reference in BMD T-score of Hip and Spine at Week 96Spine region BMD0.255 units on a scaleStandard Error 0.0339
Secondary

Change From Reference in CD4+ Cell Count at Week 96

Change from reference in CD4+ cell count was assessed at Week 96. The change from reference in CD4+ count at a given time point is defined as: CD4+ at a given time point minus reference CD4+. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF (Comprising 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52])

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Based on non-completing=failure (NC=F) analysis with values after discontinuation imputed with the reference value. Other (intermittent) missing values are imputed using last observation carried forward (LOCF).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in CD4+ Cell Count at Week 9632.07 cells per cubic millimeter (cells/mm^3)Standard Error 8
Control (Baseline to Switch)Change From Reference in CD4+ Cell Count at Week 9613.07 cells per cubic millimeter (cells/mm^3)Standard Error 10.7
Secondary

Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (by CKD-EPI) at Week 96

Change from reference in eGFRcr (by CKD-EPI) was assessed at Week 96. eGFRcr per CKD-EPI formula - Female: 1) Serum creatinine (Scr) less than or equal to (\<=)0.7 mg/dL: 144\*(Scr/0.7)\^-0.329\*0.993\^age; 2) Scr greater than (\>)0.7 mg/dL: 144\*(Scr/0.7)\^-1.209\*0.993\^age. Male: 1) Scr \<=0.9 mg/dL: 141\*(Scr/0.9)\^-0.411\*0.993\^age; 2) Scr \>0.9 mg/dL: 141\*(Scr/0.9)\^-1.209\*0.993\^age. . For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and participants at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (by CKD-EPI) at Week 96-1.3 mL/min/1.73 m^2
Control (Baseline to Switch)Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (by CKD-EPI) at Week 96-0.7 mL/min/1.73 m^2
Secondary

Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Week 96

Change from reference in eGFRcr (by Cockcroft-Gault formula) was assessed at Week 96. eGFRcr according to the Cockcroft Gault formula- Male: (140 - age in years)\*(weight in kilogram \[kg\])/72\*(serum creatinine in milligram per deciliter \[mg/dL\])=eGFRcr (milliliter per minute \[mL/min\]); Female: (140 - age in years)\*(weight in kg)/72\*(serum creatinine in mg/dL)\*0.85=eGFRcr (mL/min). For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment in the study. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Week 96-0.9 milliliter per minute (mL/min)
Control (Baseline to Switch)Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Creatinine (eGFRcr, by Cockcroft-Gault Formula [eGFRcg]) at Week 960.0 milliliter per minute (mL/min)
Secondary

Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (by CKD-EPI) at Week 96

Change from reference in eGFRcyst (by CKD-EPI) was assessed at Week 96. eGFRcyst according to the CKD-EPI formula - 1) Serum Cystatin C (Scyst) \<=0.8 mg/L: 133\*(Scyst/0.8)\^-0.499\*0.996\^age (\*0.932 if female); 2) Scyst \>0.8 mg/L: 133\*(Scyst/0.8)\^-1.328\*0.996\^age (\*0.932 if female). For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and participants at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (by CKD-EPI) at Week 96-0.9 mL/min/1.73 m^2
Control (Baseline to Switch)Change From Reference in Estimated Glomerular Filtration Rate Based on Serum Cystatin C (by CKD-EPI) at Week 961.0 mL/min/1.73 m^2
Secondary

Change From Reference in Serum Creatinine Levels at Week 96

Change from reference in serum creatinine levels at Week 96 was assessed. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in Serum Creatinine Levels at Week 960.0 micro mole per liter
Control (Baseline to Switch)Change From Reference in Serum Creatinine Levels at Week 960.0 micro mole per liter
Secondary

Change From Reference in UACR at Week 96

Change from reference in UACR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in UACR at Week 96-0.63 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Reference in UACR at Week 96-0.93 milligram per gram (mg/g)
Secondary

Change From Reference in UB2MGCR at Week 96

Change from reference in UB2MGCR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in UB2MGCR at Week 96-68.22 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Reference in UB2MGCR at Week 96-110.31 microgram per gram (mcg/g)
Secondary

Change From Reference in UPCR at Week 96

Change from reference in UPCR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in UPCR at Week 96-22.23 milligram per gram (mg/g)
Control (Baseline to Switch)Change From Reference in UPCR at Week 96-12.81 milligram per gram (mg/g)
Secondary

Change From Reference in URBPCR at Week 96

Change from reference in URBPCR was assessed at Week 96. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Change From Reference in URBPCR at Week 96-25.08 microgram per gram (mcg/g)
Control (Baseline to Switch)Change From Reference in URBPCR at Week 96-39.07 microgram per gram (mcg/g)
Secondary

Number of Participants With Resistance to Study Drug

HIV-1 genotypes were analyzed from samples of participants with confirmed virologic rebound (virologic rebound was defined as: confirmed HIV-1 RNA \>=50 copies/mL up to, and including the upper bound of the Week 48 window) and with HIV-1 RNA value \>=400 copies/mL or who discontinued with last HIV-1 RNA \>=400 copies/mL. Number of participants who developed resistance to any of the study drug was determined.

Time frame: Up to Week 48

Population: The ITT population with confirmed virologic rebound and with HIV-1 RNA value \>=400 copies/mL was analyzed.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Number of Participants With Resistance to Study Drug1 Participants
Control (Baseline to Switch)Number of Participants With Resistance to Study Drug3 Participants
Secondary

Number of Participants With Resistance to Study Drug Through Week 96

HIV-1 genotypes were analyzed from samples of participants with confirmed virologic rebound in case they had HIV-1 RNA values \>=400 copies/mL at failure or at later time points, including participants who discontinued with last HIV-1 RNA \>=400 copies/mL. Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=20 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=20 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=20 copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Number of participants who developed resistance to any of the study drug (DRV, FTC, and TFV/TAF) were reported.

Time frame: Through Week 96 (D/C/F/TAF arm), up to Week 48 (Control arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment in the study. Here, N (number of participants analyzed) signifies total number of participants with screening/baseline and endpoint genotype. Due to the low proportion of rebounders of which the majority had low viral load values, few samples were eligible for postbaseline genotyping.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Number of Participants With Resistance to Study Drug Through Week 96FTC RAMs0 Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Number of Participants With Resistance to Study Drug Through Week 96DRV resistance-associated mutations (RAMs)0 Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Number of Participants With Resistance to Study Drug Through Week 96TFV RAMs0 Participants
Control (Baseline to Switch)Number of Participants With Resistance to Study Drug Through Week 96TFV RAMs0 Participants
Control (Baseline to Switch)Number of Participants With Resistance to Study Drug Through Week 96FTC RAMs0 Participants
Control (Baseline to Switch)Number of Participants With Resistance to Study Drug Through Week 96DRV resistance-associated mutations (RAMs)0 Participants
Switch to D/C/F/TAFNumber of Participants With Resistance to Study Drug Through Week 96DRV resistance-associated mutations (RAMs)0 Participants
Switch to D/C/F/TAFNumber of Participants With Resistance to Study Drug Through Week 96FTC RAMs1 Participants
Switch to D/C/F/TAFNumber of Participants With Resistance to Study Drug Through Week 96TFV RAMs0 Participants
Secondary

Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48

An AE is any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. Grade 3 (Severe) events were symptoms causing inability to perform usual social & functional activities. Grade 4 (Life-threatening) events were symptoms causing inability to perform basic self-care functions or medical or operative intervention indicated to prevent permanent impairment, persistent disability, or death.

Time frame: Up to Week 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48Grade 3 AEs5.6 Percentage of Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48Grade 4 AEs1.2 Percentage of Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48SAEs4.6 Percentage of Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48Premature discontinuations due to AEs1.4 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48Premature discontinuations due to AEs1.3 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48Grade 3 AEs6.3 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48SAEs4.8 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 Adverse Events (AEs), Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Through Week 48Grade 4 AEs1.9 Percentage of Participants
Secondary

Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of Extension

AE is any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. Grade 3 (Severe) events were symptoms causing inability to perform usual social & functional activities. Grade 4 (Life-threatening) events were symptoms causing inability to perform basic self-care functions or medical or operative intervention indicated to prevent permanent impairment, persistent disability, or death. SAE is any AE that results in: death, persistent or significant disability/incapacity, requires inpatient hospitalization or prolongation of existing hospitalization, is life-threatening experience, is a congenital anomaly/birth defect and may jeopardize participant and/or may require medical or surgical intervention to prevent one of the outcomes listed above.

Time frame: From Week 96 to end of extension (up to 42 months)

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionGrade 3 AEs5.7 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionGrade 4 AEs2.1 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionSAEs7.3 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionPremature discontinuations due to AEs1.1 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionPremature discontinuations due to AEs2.1 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionGrade 3 AEs5.0 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionSAEs7.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and 4 AEs, Serious Adverse Events (SAEs), and Premature Discontinuation Due to AEs Post-Week 96 to End of ExtensionGrade 4 AEs1.5 percentage of participants
Secondary

Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96

AE is any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. Grade 3 (Severe) events were symptoms causing inability to perform usual social & functional activities. Grade 4 (Life-threatening) events were symptoms causing inability to perform basic self-care functions or medical or operative intervention indicated to prevent permanent impairment, persistent disability, or death. SAE is any AE that results in: death, persistent or significant disability/incapacity, requires inpatient hospitalization or prolongation of existing hospitalization, is life-threatening experience, is a congenital anomaly/birth defect and may jeopardize participant and/or may require medical or surgical intervention to prevent one of the outcomes listed above.

Time frame: Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96Grade 3 AEs10.5 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96Grade 4 AEs2.4 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96SAEs8.7 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96Premature discontinuations due to AEs2.2 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96Premature discontinuations due to AEs2.0 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96Grade 3 AEs6.3 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96SAEs6.0 percentage of participants
Control (Baseline to Switch)Percentage of Participants Experiencing Grade 3 and Grade 4 AEs, SAEs, and Premature Discontinuation Due to AEs Through Week 96Grade 4 AEs1.1 percentage of participants
Secondary

Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of Extension

Percentage of participants with HIV RNA \<50, \<20, \<200 copies/mL post Week 96 to end of extension were reported.

Time frame: Week 96 to end of extension (up to 42 months)

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment in the study. Here, N (number of participants analyzed) indicates number of participants evaluable for this outcome measure and 'n' specifies participants analyzed for specified timepoints.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 6 months (<50 copies/mL)97.8 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 12 months (<200 copies/mL)99.3 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 18 months (<200 copies/mL)100 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 24 months (<50 copies/mL)99.3 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 24 months (<200 copies/mL)99.6 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 42 months (<200 copies/mL)100 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 30 months (<200 copies/mL)100 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 6 months (<20 copies/mL)91.4 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 30 months (<50 copies/mL)99.3 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 12 months (<20 copies/mL)93.9 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 12 months (<50 copies/mL)98.4 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 18 months (<20 copies/mL)96.1 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 36 months (<50 copies/mL)98.1 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 24 months (<20 copies/mL)96.1 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 36 months (<200 copies/mL)100 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 30 months (<20 copies/mL)95.6 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 42 months (<50 copies/mL)100 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 36 months (<20 copies/mL)94.2 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 18 months (<50 copies/mL)99.6 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 42 months (<20 copies/mL)93.8 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 6 months (<200 copies/mL)99.1 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 42 months (<20 copies/mL)100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 30 months (<200 copies/mL)100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 36 months (<200 copies/mL)100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 42 months (<200 copies/mL)100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 6 months (<50 copies/mL)97.9 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 12 months (<50 copies/mL)97.4 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 18 months (<50 copies/mL)98.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 24 months (<50 copies/mL)98.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 30 months (<50 copies/mL)100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 36 months (<50 copies/mL)100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 42 months (<50 copies/mL)100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 6 months (<200 copies/mL)99.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 18 months (<200 copies/mL)99.1 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 24 months (<200 copies/mL)99.3 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 6 months (<20 copies/mL)93.4 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 12 months (<20 copies/mL)91.4 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 18 months (<20 copies/mL)92.9 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 24 months (<20 copies/mL)95.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 30 months (<20 copies/mL)92.2 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 36 months (<20 copies/mL)96.2 percentage of participants
Control (Baseline to Switch)Percentage of Participants With HIV RNA <50, <20, <200 Copies/mL Post Week 96 to End of ExtensionWeek 96 + 12 months (<200 copies/mL)98.7 percentage of participants
Secondary

Percentage of Participants With Non-Treatment Failure by Kaplan-Meier Estimates

Percentage of participants with non-treatment failure by Kaplan-Meier Estimates were reported. Treatment failure was defined as having either protocol-defined virologic rebound or having discontinued for reasons other than alternate access to D/C/F/TAF (or other antiretroviral \[ARV\]).

Time frame: Week 96 to end of extension (up to 42 months)

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment. Here, N (number of participants analyzed) indicates number of participants evaluable for this outcome measure; and 'n' specifies participants analyzed for specified timepoints.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 36 months84.9 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96100 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 6 months98.1 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 12 months94.3 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 18 months91.6 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 24 months89.4 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 30 months87.0 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 42 months81.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 36 months82.6 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 24 months89.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 18 months92.2 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 6 months98.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 30 months88.1 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Treatment Failure by Kaplan-Meier EstimatesWeek 96 + 12 months95.4 percentage of participants
Secondary

Percentage of Participants With Non-Virologic Rebound at Week 48 by Kaplan-Meier Estimates

Virologic rebound was defined as: confirmed plasma HIV-1 RNA \>=50 copies/mL up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=50 copies/mL at premature discontinuation (irrespective of reason). Here Kaplan-Meier estimates percentage of participants with non-virologic rebound at week 48.

Time frame: Baseline up to Week 48

Population: ITT analysis set included all participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound at Week 48 by Kaplan-Meier Estimates97.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound at Week 48 by Kaplan-Meier Estimates97.8 percentage of participants
Secondary

Percentage of Participants With Non-Virologic Rebound at Week 96 by Kaplan-Meier Estimates

Here Kaplan-Meier estimates percentage of participants with non-virologic rebound at Week 96.

Time frame: Baseline to Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound at Week 96 by Kaplan-Meier Estimates96.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound at Week 96 by Kaplan-Meier Estimates97.8 percentage of participants
Secondary

Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier Estimates

Virologic rebound is defined as participants who show confirmed HIV-1 RNA \>=50 copies/mL, or for which the last available (single) HIV-1 RNA value on treatment was \>=50 copies/mL. Here, Kaplan-Meier estimates (%) of non-virologic rebound at every 6 months interval are presented.

Time frame: Week 96 to end of extension (at every 6 months, up to 42 months)

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates number of participants evaluable for this outcome measure; and 'n' specifies participants analyzed for specified timepoints.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96100 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 6 months99.4 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 12 months98.0 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 18 months97.6 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 24 months97.1 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 30 months95.3 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 36 months92.4 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 42 months92.4 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 30 months96.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 6 months100 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 24 months96.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 12 months98.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 36 months96.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Non-Virologic Rebound by Kaplan-Meier EstimatesWeek 96 + 18 months98.1 percentage of participants
Secondary

Percentage of Participants With Treatment Adherence of >95 (Approach 1) Through Week 96

Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative through Week 96 (Approach 1).

Time frame: Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates the number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Treatment Adherence of >95 (Approach 1) Through Week 9691.6 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Treatment Adherence of >95 (Approach 1) Through Week 9687.3 percentage of participants
Secondary

Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 48

Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative treatment adherence up to time point where not more than one bottle was missing, or if available, through Week 48, whichever came sooner (Approach 2).

Time frame: Through Week 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, 'N' (number of participants analyzed) indicates the number of participants evaluable for this endpoint.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 4882.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 4877.2 percentage of participants
Secondary

Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 96

Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative treatment adherence up to time point where not more than one bottle was missing, or if available, through Week 96, whichever came sooner (Approach 2).

Time frame: Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, 'N' (number of participants analyzed) indicates the number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 9682.8 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Treatment Adherence of >95% (Approach 2) Through Week 9680.9 percentage of participants
Secondary

Percentage of Participants With Treatment Adherence of >95% From Week 96 to End of Extension

Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability and was calculated cumulative from start of treatment/switch to last study drug intake by determination of the cumulative treatment adherence in participants who returned all dispensed bottles prior to or at the last visit in the study from Week 96 to end of extension.

Time frame: Week 96 to end of extension (up to 42 months)

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates the number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Treatment Adherence of >95% From Week 96 to End of Extension89.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Treatment Adherence of >95% From Week 96 to End of Extension89.4 percentage of participants
Secondary

Percentage of Participants With Treatment Adherence of Greater Than (>)95 Percent (%) (Approach 1) Through Week 48

Treatment adherence (defined as adherence of \>95%) was assessed by the drug accountability cumulative through Week 48 (Approach 1).

Time frame: Through Week 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here, N (number of participants analyzed) indicates the number of participants evaluable for this endpoint.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Treatment Adherence of Greater Than (>)95 Percent (%) (Approach 1) Through Week 4891.6 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Treatment Adherence of Greater Than (>)95 Percent (%) (Approach 1) Through Week 4885.3 Percentage of Participants
Secondary

Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach

Percentage of participants with virologic failure based on HIV-1 RNA \>=20, \>=50, and \>=200 copies/mL threshold were analyzed at Week 96 using FDA snapshot approach. FDA Snapshot approach analysis was based on the last observed viral load data: virologic failure was defined by the FDA snapshot approach as having last available HIV-1 RNA \>=20/50/200 copies/mL at Week 96; virologic failure - leading to discontinuation; virologic failure - discontinued due to other reason and last available HIV-1 RNA \>=20/50/200 copies/mL.

Time frame: Week 96 (Comprising up to Week 96 for D/C/F/TAF and 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52 up to Week 96])

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach>=20 copies/mL6.8 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach>=50 copies/mL1.2 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach>=200 copies/mL0.3 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach>=20 copies/mL6.0 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach>=50 copies/mL1.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Failure Based on HIV-1 RNA >=20, >=50, and >=200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach>=200 copies/mL0 percentage of participants
Secondary

Percentage of Participants With Virologic Rebound (HIV-1 RNA >=200 Copies/mL) Cumulative Through Week 96

Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=200 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=200 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=200 copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Percentage of participants with virologic rebound were reported.

Time frame: Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: Intent-to-treat (ITT) analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Rebound (HIV-1 RNA >=200 Copies/mL) Cumulative Through Week 960.5 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Rebound (HIV-1 RNA >=200 Copies/mL) Cumulative Through Week 960.6 percentage of participants
Secondary

Percentage of Participants With Virologic Rebound (HIV-1 RNA >=20 Copies/mL) Cumulative Through Week 96

Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=20 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=20 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=20 copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Percentage of participants with virologic rebound were reported.

Time frame: Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: Intent-to-treat (ITT) analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Rebound (HIV-1 RNA >=20 Copies/mL) Cumulative Through Week 9613.8 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Rebound (HIV-1 RNA >=20 Copies/mL) Cumulative Through Week 968.8 percentage of participants
Secondary

Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 96

Virologic rebound was defined as: confirmed plasma HIV-1 RNA level \>=50 copies/mL up to and including Week 96, last available on-treatment (single) HIV-1 RNA \>=50 copies/mL at premature discontinuation (irrespective of reason), and last available on-treatment HIV-1 RNA \>=50copies/mL at the study cutoff of Week 96 (that is, any last viral load \[re\]test having occurred no later than 6 weeks after Week 96). Percentage of participants with virologic rebound were reported.

Time frame: Through Week 96 (D/C/F/TAF arm) and from Week 52 to Week 96 (Switch to D/C/F/TAF arm)

Population: Intent-to-treat (ITT) analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 963.1 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Rebound (HIV-1 RNA >=50 Copies/mL) Cumulative Through Week 962.3 percentage of participants
Secondary

Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=200 Copies/mL) Cumulative Through 48 Weeks

Virologic rebound was defined as: confirmed plasma HIV-1 RNA \>=200 copies/mL up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=200 copies/mL at premature discontinuation (irrespective of reason). Percentage of participants with virologic rebound were reported.

Time frame: Through 48 Weeks

Population: ITT analysis set included all participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=200 Copies/mL) Cumulative Through 48 Weeks0.4 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=200 Copies/mL) Cumulative Through 48 Weeks0.0 Percentage of Participants
Secondary

Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=20 Copies/mL) Cumulative Through 48 Weeks

Virologic rebound was defined as: confirmed plasma HIV-1 RNA \>=20 copies/mL up to, and including the upper bound of the Week 48 window (ie, 54 weeks) and last available on-treatment (single) HIV-1 RNA \>=20 copies/mL at premature discontinuation (irrespective of reason). Percentage of participants with virologic rebound were reported.

Time frame: Through 48 Weeks

Population: ITT analysis set included all participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=20 Copies/mL) Cumulative Through 48 Weeks10.5 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Rebound (Plasma HIV-1 RNA >=20 Copies/mL) Cumulative Through 48 Weeks11.4 Percentage of Participants
Secondary

Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm

Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 48 using TLOVR algorithm approach. TLOVR was defined as sustained HIV-1 RNA \<20/50/200 copies/mL.

Time frame: Week 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm<20 copies/mL86.0 Percentage of Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm<50 copies/mL93.7 Percentage of Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm<200 copies/mL95.4 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm<20 copies/mL83.6 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm<50 copies/mL92.9 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm<200 copies/mL94.7 Percentage of Participants
Secondary

Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach

Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 96 using FDA snapshot approach. FDA Snapshot approach analysis was based on the last observed viral load data: virologic response was defined as having last available HIV-1 RNA \<20/50/200 copies/mL (observed case).

Time frame: Week 96 (Comprising up to Week 96 for D/C/F/TAF and 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52 up to Week 96])

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach<20 copies/mL85.3 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach<50 copies/mL90.7 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach<200 copies/mL91.2 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach<50 copies/mL93.8 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach<20 copies/mL89.8 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the FDA Snapshot Approach<200 copies/mL95.5 percentage of participants
Secondary

Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR Algorithm

Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 96 using TLOVR algorithm approach. TLOVR was defined as sustained HIV-1 RNA \<20/50/200 copies/mL.

Time frame: Week 96 (Comprising up to Week 96 for D/C/F/TAF and 44 weeks of D/C/F/TAF exposure [that is, from the switch to D/C/F/TAF at Week 52 up to Week 96])

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR Algorithm<20 copies/mL79.6 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR Algorithm<50 copies/mL89.6 percentage of participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR Algorithm<200 copies/mL91.7 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR Algorithm<20 copies/mL88.1 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR Algorithm<50 copies/mL94.3 percentage of participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA <20, <50, and <200 Copies/mL Threshold at Week 96 as Defined by the TLOVR Algorithm<200 copies/mL95.7 percentage of participants
Secondary

Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot Approach

Percentage of participants with virologic response based on HIV-1 RNA \<20, \<50, and \<200 copies/mL threshold were analyzed at Week 48 using FDA snapshot approach. FDA Snapshot approach analysis was based on the last observed viral load data: virologic response was defined as HIV-1 RNA \<20/50/200 copies/mL (observed case).

Time frame: Week 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment.

ArmMeasureGroupValue (NUMBER)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot Approach<50 copies/mL94.9 Percentage of Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot Approach<200 copies/mL95.0 Percentage of Participants
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot Approach<20 copies/mL89.8 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot Approach<20 copies/mL88.4 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot Approach<50 copies/mL93.7 Percentage of Participants
Control (Baseline to Switch)Percentage of Participants With Virologic Response Based on HIV-1 RNA Less Than (<)20, <50, and <200 Copies/mL Threshold at Week 48 as Defined by the Food and Drug Administration (FDA) Snapshot Approach<200 copies/mL94.2 Percentage of Participants
Secondary

Percent Change From Baseline in 25-hydroxy Vitamin D at Weeks 24 and 48

Percent change from baseline in bone biomarker: 25-hydroxy vitamin D was assessed at Weeks 24 and 48.

Time frame: Baseline, Weeks 24 and 48

Population: The bone investigation substudy (BIS) analysis set included all participants who were randomized and received at least 1 dose of study drug in the study, and had at least one postbaseline value for biomarker data. Here 'n' specifies participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in 25-hydroxy Vitamin D at Weeks 24 and 48Percent change at Week 24-3.0 Percent changeStandard Error 5.06
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in 25-hydroxy Vitamin D at Weeks 24 and 48Percent change at Week 4825.2 Percent changeStandard Error 5.51
Control (Baseline to Switch)Percent Change From Baseline in 25-hydroxy Vitamin D at Weeks 24 and 48Percent change at Week 244.2 Percent changeStandard Error 6.13
Control (Baseline to Switch)Percent Change From Baseline in 25-hydroxy Vitamin D at Weeks 24 and 48Percent change at Week 4824.9 Percent changeStandard Error 7.46
Secondary

Percent Change From Baseline in Parathyroid Hormone (PTH) at Weeks 24 and 48

Percent change from baseline in bone biomarker: PTH was assessed at Weeks 24 and 48.

Time frame: Baseline, Weeks 24 and 48

Population: The bone investigation substudy (BIS) analysis set included all participants who were randomized and received at least 1 dose of study drug in the study, and had at least one postbaseline value for biomarker data. Here 'n' specifies participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Parathyroid Hormone (PTH) at Weeks 24 and 48Percent change at Week 24-3.092 Percent changeStandard Error 2.5941
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Parathyroid Hormone (PTH) at Weeks 24 and 48Percent change at Week 48-4.510 Percent changeStandard Error 2.5375
Control (Baseline to Switch)Percent Change From Baseline in Parathyroid Hormone (PTH) at Weeks 24 and 48Percent change at Week 2412.034 Percent changeStandard Error 4.1777
Control (Baseline to Switch)Percent Change From Baseline in Parathyroid Hormone (PTH) at Weeks 24 and 48Percent change at Week 489.436 Percent changeStandard Error 4.4784
Secondary

Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48

Percent change from baseline in bone biomarkers: P1NP and CTX was assessed at Weeks 24 and 48.

Time frame: Baseline, Weeks 24 and 48

Population: The bone investigation substudy (BIS) analysis set included all participants who were randomized and received at least 1 dose of study drug in the study, and had at least one postbaseline value for biomarker data. Here 'n' specifies participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48P1NP: Percent change at Week 24-22.971 Percent ChangeStandard Error 1.8818
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48P1NP: Percent change at Week 48-26.752 Percent ChangeStandard Error 1.896
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48CTX: Percent change at Week 24-16.772 Percent ChangeStandard Error 2.2575
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48CTX: Percent change at Week 48-10.517 Percent ChangeStandard Error 3.2325
Control (Baseline to Switch)Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48CTX: Percent change at Week 485.433 Percent ChangeStandard Error 4.1118
Control (Baseline to Switch)Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48P1NP: Percent change at Week 24-0.027 Percent ChangeStandard Error 2.7325
Control (Baseline to Switch)Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48CTX: Percent change at Week 2416.312 Percent ChangeStandard Error 3.8855
Control (Baseline to Switch)Percent Change From Baseline in Serum Procollagen 1 N-Terminal Propeptide (P1NP) and Serum Collagen Type 1 Beta Carboxy Telopeptide (CTX) Levels at Weeks 24 and 48P1NP: Percent change at Week 48-3.751 Percent ChangeStandard Error 2.6988
Secondary

Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48

Percent change from baseline in spine and hip BMD was assessed at Weeks 24 and 48.

Time frame: Baseline, Weeks 24 and 48

Population: The bone investigation substudy (BIS) analysis set included all participants who were randomized and received at least 1 dose of study drug in the study, and had at least one postbaseline value for bone mineral density (BMD) data. Here 'n' specifies participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Spine BMD: Percent change at Week 241.55 Percent changeStandard Error 0.276
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Spine BMD: Percent change at Week 482.06 Percent changeStandard Error 0.324
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Hip BMD: Percent change at Week 240.91 Percent changeStandard Error 0.23
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Hip BMD: Percent change at Week 481.62 Percent changeStandard Error 0.244
Control (Baseline to Switch)Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Hip BMD: Percent change at Week 48-0.08 Percent changeStandard Error 0.288
Control (Baseline to Switch)Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Spine BMD: Percent change at Week 240.18 Percent changeStandard Error 0.342
Control (Baseline to Switch)Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Hip BMD: Percent change at Week 240.00 Percent changeStandard Error 0.279
Control (Baseline to Switch)Percent Change From Baseline in Spine and Hip Bone Mineral Density (BMD) at Weeks 24 and 48Spine BMD: Percent change at Week 480.01 Percent changeStandard Error 0.391
Comparison: Spine BMD: Percent change at Week 24p-value: <0.00195% CI: [0.697, 2.037]ANCOVA
Comparison: Spine BMD: Percent change at Week 48p-value: <0.00195% CI: [1.277, 2.814]ANCOVA
Comparison: Hip BMD: Percent change at Week 24p-value: =0.00195% CI: [0.366, 1.436]ANCOVA
Comparison: Hip BMD: Percent change at Week 48p-value: <0.00195% CI: [1.144, 2.248]ANCOVA
Secondary

Percent Change From Baseline in Urine Fractional Excretion of Phosphate (FEPO4) at Weeks 24 and 48

Percent change from baseline in urine FEPO4 was assessed at Weeks 24 and 48.

Time frame: Baseline, Weeks 24 and 48

Population: ITT analysis set included all the participants who were randomized and received at least 1 dose of study treatment. Here 'n' specifies those participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Urine Fractional Excretion of Phosphate (FEPO4) at Weeks 24 and 48Percent change at Week 243.58 Percent change
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Baseline in Urine Fractional Excretion of Phosphate (FEPO4) at Weeks 24 and 48Percent change at Week 488.42 Percent change
Control (Baseline to Switch)Percent Change From Baseline in Urine Fractional Excretion of Phosphate (FEPO4) at Weeks 24 and 48Percent change at Week 248.55 Percent change
Control (Baseline to Switch)Percent Change From Baseline in Urine Fractional Excretion of Phosphate (FEPO4) at Weeks 24 and 48Percent change at Week 488.57 Percent change
Comparison: FEPO4 - Change at Week 24p-value: =0.288Van Elteren Test
Comparison: FEPO4 - Change at Week 48p-value: =0.148Van Elteren Test
Secondary

Percent Change From Reference in FEPO4 at Week 96

Percent change from reference in FEPO4 at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ F/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: The ITT analysis set included all the participants who were randomized and received at least one dose of study treatment. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEDIAN)
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Reference in FEPO4 at Week 964.15 percent change
Control (Baseline to Switch)Percent Change From Reference in FEPO4 at Week 96-3.19 percent change
Secondary

Percent Change From Reference in Hip and Spine BMD at Week 96

The BMD is the amount of mineral in gram per square centimeter of bone, which was assessed by DXA scan. Positive values are best values and negative values are worst values of change. Percent change from reference in hip and spine BMD was assessed. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: BIS analysis set included all participants who were randomized, received at least 1 dose of study drug in study and had at least one post-baseline value for either biomarker/BMD data. Here, N (number of participants analyzed) indicates number of participants evaluable for this outcome measure; and 'n' specifies participants analyzed for specified categories.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Reference in Hip and Spine BMD at Week 96Hip region BMD-T score0.0173 percent changeStandard Error 0.00217
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Reference in Hip and Spine BMD at Week 96Spine region BMD-T score0.0193 percent changeStandard Error 0.00286
Control (Baseline to Switch)Percent Change From Reference in Hip and Spine BMD at Week 96Hip region BMD-T score0.0108 percent changeStandard Error 0.00328
Control (Baseline to Switch)Percent Change From Reference in Hip and Spine BMD at Week 96Spine region BMD-T score0.0279 percent changeStandard Error 0.00381
Secondary

Percent Change From Reference in Levels of 25-OH Vitamin D at Week 96

Percent change from reference in 25-OH Vitamin D at Week 96 were reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: BIS analysis set included all participants who were randomized, received at least 1 dose of study drug in study and had at least one post-baseline value for either biomarker/BMD data. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Reference in Levels of 25-OH Vitamin D at Week 9624.6 percent changeStandard Error 5.16
Control (Baseline to Switch)Percent Change From Reference in Levels of 25-OH Vitamin D at Week 96-1.9 percent changeStandard Error 3.33
Secondary

Percent Change From Reference in Levels of PTH at Week 96

Percent change from reference in PTH at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: BIS analysis set included all participants who were randomized, received at least 1 dose of study drug in study and had at least one post-baseline value for either biomarker/BMD data. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Reference in Levels of PTH at Week 96-17.171 percent changeStandard Error 2.6774
Control (Baseline to Switch)Percent Change From Reference in Levels of PTH at Week 96-20.466 percent changeStandard Error 3.2559
Secondary

Percent Change From Reference in Levels of Serum CTX at Week 96

Percent change from reference in serum CTX at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: BIS analysis set included all participants who were randomized, received at least 1 dose of study drug in study and had at least one post-baseline value for either biomarker/BMD data. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Reference in Levels of Serum CTX at Week 96-10.192 percent changeStandard Error 3.0592
Control (Baseline to Switch)Percent Change From Reference in Levels of Serum CTX at Week 96-21.755 percent changeStandard Error 3.4926
Secondary

Percent Change From Reference in Levels of Serum P1NP at Week 96

Percent change from reference in serum P1NP levels at Week 96 was reported. For the D/C/F/TAF group, reference is the comparative treatment phase baseline as in Week 48 analysis (Reference 1). For the Switch to D/C/F/TAF (late switch) group, the last value prior to the switch was used as reference (reference 2).

Time frame: From Reference 1 to Week 96 for D/C/F/TAF+ FTC/TDF Group and Reference 2 to Week 96 for Switch to D/C/F/TAF

Population: BIS analysis set included all participants who were randomized, received at least 1 dose of study drug in study and had at least one post-baseline value for either biomarker/BMD data. Here, N (number of participants analyzed) signifies participants evaluated for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Percent Change From Reference in Levels of Serum P1NP at Week 96-19.899 percent changeStandard Error 2.2151
Control (Baseline to Switch)Percent Change From Reference in Levels of Serum P1NP at Week 96-18.466 percent changeStandard Error 3.1169
Secondary

Predose (Trough) Plasma Concentration (C0h) of Darunavir

Predose (trough) plasma concentration (C0h) of darunavir was determined. Pharmacokinetic (PK) data was only analyzed for participants in the D/C/F/TAF group as per planned analysis.

Time frame: Predose at Weeks 2, 4, 8, 12, 24, 36, and 48

Population: The PK analysis set included all participants randomized to D/C/F/TAF group and received at least 1 dose of study drug in study, and for whom plasma concentration data of any analytes of interest were available. Here 'n' specifies participants who were analyzed for this endpoint at given time point.

ArmMeasureGroupValue (MEAN)Dispersion
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Predose (Trough) Plasma Concentration (C0h) of DarunavirWeek 21775.29 Nanogram per milliliter (ng/mL)Standard Deviation 1698.84
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Predose (Trough) Plasma Concentration (C0h) of DarunavirWeek 41732.00 Nanogram per milliliter (ng/mL)Standard Deviation 1389.44
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Predose (Trough) Plasma Concentration (C0h) of DarunavirWeek 81910.30 Nanogram per milliliter (ng/mL)Standard Deviation 1501.94
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Predose (Trough) Plasma Concentration (C0h) of DarunavirWeek 121643.38 Nanogram per milliliter (ng/mL)Standard Deviation 1328.41
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Predose (Trough) Plasma Concentration (C0h) of DarunavirWeek 242022.99 Nanogram per milliliter (ng/mL)Standard Deviation 1965.64
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Predose (Trough) Plasma Concentration (C0h) of DarunavirWeek 361806.37 Nanogram per milliliter (ng/mL)Standard Deviation 1669.43
D/C/F/TAF (Test) (Baseline [BL] to End of Extension [EOE])Predose (Trough) Plasma Concentration (C0h) of DarunavirWeek 481899.79 Nanogram per milliliter (ng/mL)Standard Deviation 1833.09

Source: ClinicalTrials.gov · Data processed: Mar 8, 2026