Skip to content

Study to Evaluate the Pharmacokinetics, Safety, and Antiviral Activity of the Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide (E/C/F/TAF) Single Tablet Regimen (STR) in HIV-1 Infected Antiretroviral Treatment-Naive Adolescents and Virologically Suppressed Children

A Phase 2/3, Open-Label Study of the Pharmacokinetics, Safety, and Antiviral Activity of the Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide (E/C/F/TAF) Single Tablet Regimen (STR) in HIV-1 Infected Antiretroviral Treatment-Naive Adolescents and Virologically Suppressed Children

Status
Completed
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01854775
Enrollment
129
Registered
2013-05-16
Start date
2013-05-06
Completion date
2025-06-18
Last updated
2026-01-09

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

Conditions

Acquired Immune Deficiency Syndrome (AIDS), HIV Infections

Keywords

Adolescents, HIV-1, HIV, Treatment-naive, Virologically suppressed, Children

Brief summary

The primary objectives of Cohort 1 are to evaluate the steady state pharmacokinetics (PK) for elvitegravir (EVG) and tenofovir alafenamide (TAF) and confirm the dose of the elvitegravir/cobicistat/emtricitabine/tenofovir alafenamide (E/C/F/TAF) STR (Part A) and to evaluate the safety and tolerability of E/C/F/TAF STR through Week 24 (Part B) in human immunodeficiency virus - 1 (HIV-1) infected, antiretroviral (ARV) treatment-naive adolescents. The primary objectives of Cohort 2 are to evaluate the PK of EVG and TAF (Part A), and to evaluate the safety and tolerability of E/C/F/TAF through Week 24 (Part B) in virologically suppressed HIV-1 infection children 6 to \< 12 years weighing \>= 25 kg. The primary objectives of Cohort 3 are to evaluate the PK of EVG and TAF and confirm the dose of the STR, and to evaluate the safety and tolerability of E/C/F/TAF low dose (LD) STR in virologically suppressed HIV-1 infected children ≥ 2 years of age and weighing ≥ 14 to \< 25 kg.

Interventions

Tablets administered orally with food.

90/90/120/6 mg STR administered once daily orally with food.

Sponsors

Gilead Sciences
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Cohort 1 * Age at baseline: 12 years to \< 18 years old * Weight at screening: ≥ 35 kg (77 lbs) * Plasma HIV-1 ribonucleic acid (RNA) levels of ≥ 1,000 copies/mL at screening (Roche COBAS TaqMan v2.0) * Screening genotype report shows sensitivity to EVG, emtricitabine (FTC) and tenofovir (TFV) * No prior use of any approved or experimental anti-HIV-1 drug for any length of time * Cohort 2 * Age at baseline: 6 years to \< 12 years old * Weight at screening: ≥ 25 kg (55 lbs) * Plasma HIV-1 RNA of \< 50 copies/mL (or undetectable HIV-1 RNA level according to the local assay being used if the limit of detection is \> 50 copies/mL) for ≥ 180 consecutive days (6 months) prior to screening on a stable antiretroviral regimen, without documented history of resistance to any component of E/C/F/TAF STR. * Cohort 3 * Age at baseline: ≥ 2 years old * Weight at screening: ≥ 14 kg (31 lbs) to \< 25 kg (55 lbs) * Plasma HIV-1 RNA: \< 50 copies/mL (or undetectable HIV-1 RNA level according to the local assay being used if the limit of detection is \> 50 copies/mL) for ≥ 180 consecutive days (6 months) prior to screening on a stable antiretroviral regimen, without prior history of resistance to any component of E/C/F/TAF STR Key

Exclusion criteria

* Hepatitis B or hepatitis C virus infection * Evidence of active pulmonary or extra-pulmonary tuberculosis disease within 3 months of the screening visit. * Individuals experiencing decompensated cirrhosis * Pregnant or lactating females Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetic (PK) Parameter: AUCtau of Elvitegravir (EVG) (Cohort 1)0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).
PK Parameter: AUCtau of EVG (Cohort 2)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).
PK Parameter: AUCtau of EVG (Cohort 3)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).
PK Parameter: AUClast of Tenofovir Alafenamide (TAF) (Cohort 1)0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4AUClast is defined as the concentration of drug from time zero to the last observable concentration, area under the concentration time curve to last observation (AUClast).
PK Parameter: AUClast of TAF (Cohort 2)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4AUClast is defined as the concentration of drug from time zero to the last observable concentration.
PK Parameter: AUCtau of TAF (Cohort 3)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).
Cohort 1: Percentage of Participants With All Treatment-Emergent Adverse Events (AEs) and Treatment-Emergent Serious Adverse Events (SAEs)From first dose date up to Week 24Treatment-emergent adverse events (TEAEs) were defined as any AEs that begin or worsen on or after the start of study drug through 30 days after the last dose of study drug. The severity was graded based on the Gilead Sciences Grading Scale for Severity of Adverse Events. An AE that met one or more of the following outcomes was classified as serious: * Fatal * Life-threatening * Disabling/incapacitating * Results in hospitalization or prolongs a hospital stay * A congenital abnormality * Other important medical events may also be considered serious AEs if they may require medical or surgical intervention to prevent one of the outcomes listed above.
Cohort 2: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEsFrom first dose date up to Week 24TEAEs were defined as any AEs that begin or worsen on or after the start of study drug through 30 days after the last dose of study drug. The severity was graded based on the Gilead Sciences Grading Scale for Severity of Adverse Events. An AE that met one or more of the following outcomes was classified as serious: * Fatal * Life-threatening * Disabling/incapacitating * Results in hospitalization or prolongs a hospital stay * A congenital abnormality * Other important medical events may also be considered serious AEs if they may require medical or surgical intervention to prevent one of the outcomes listed above.
Cohort 3: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEsFrom first dose date up to Week 24TEAEs were defined as any AEs that begin or worsen on or after the start of study drug through 30 days after the last dose of study drug. The severity was graded based on the Gilead Sciences Grading Scale for Severity of Adverse Events. An AE that met one or more of the following outcomes was classified as serious: * Fatal * Life-threatening * Disabling/incapacitating * Results in hospitalization or prolongs a hospital stay * A congenital abnormality * Other important medical events may also be considered serious AEs if they may require medical or surgical intervention to prevent one of the outcomes listed above.

Secondary

MeasureTime frameDescription
PK Parameter: CL/F of EVG and TAF (Cohort 3)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2CL/F is defined as the apparent clearance of the drug following oral administration.
PK Parameter: Vz/F of EVG and TAF (Cohort 1)0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4Vz/F is defined as the apparent volume of distribution of the drug after oral administration.
PK Parameter: Vz/F of EVG and TAF (Cohort 2)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4Vz/F is defined as the apparent volume of distribution of the drug after oral administration.
PK Parameter: Vz/F of EVG and TAF (Cohort 3)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2Vz/F is defined as the apparent volume of distribution of the drug after oral administration.
PK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 1)0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).
PK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 2)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).
PK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 3)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot AnalysisWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot AnalysisWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, as Defined by the FDA Snapshot AnalysisWeek 24The percentage of participants with HIV-1 RNA \< 400 Copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, as Defined by the FDA Snapshot AnalysisWeek 48The percentage of participants with HIV-1 RNA \< 400 Copies/mL at Weeks 24 and 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot AnalysisWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot AnalysisWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot AnalysisWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 2: Change From Baseline in CD4+ Cell Percentage at Week 24Baseline, Week 24
Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot AnalysisWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = failure analyses.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Failure AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Failure AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = failure analyses.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = failure analyses.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Failure AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 24 was analyzed based on missing = failure analyses.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Failure AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = failure analyses.
Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.
Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = failure analyses.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = excluded analyses.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = excluded analyses.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Excluded AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 24 was analyzed based on missing = excluded analyses.
Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Excluded AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = excluded analyses.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = excluded analyses.
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = excluded analyses.
Cohort 1: Change From Baseline in CD4+ Cell Percentage at Week 48Baseline, Week 48
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Excluded AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = excluded analyses.
Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = excluded analyses.
Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded AnalysesWeek 48The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = excluded analyses.
Cohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 24Baseline, Week 24
Cohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 48Baseline, Week 48
Cohort 1: Change From Baseline in Cluster of Differentiation (CD4+) Cell Count at Week 24Baseline, Week 24
Cohort 1: Change From Baseline in CD4+ Cell Count at Week 48Baseline, Week 48
Cohort 2: Change From Baseline in CD4+ Cell Count at Week 24Baseline, Week 24
Cohort 2: Change From Baseline in CD4+ Cell Count at Week 48Baseline, Week 48
Cohort 3: Change From Baseline in CD4+ Cell Count at Week 24Baseline, Week 24
Cohort 3: Change From Baseline in CD4+ Cell Count at Week 48Baseline, Week 48
Cohort 1: Change From Baseline in CD4+ Cell Percentage at Week 24Baseline, Week 24
Cohort 2: Change From Baseline in CD4+ Cell Percentage at Week 48Baseline, Week 48
Cohort 3: Change From Baseline in CD4+ Cell Percentage at Week 24Baseline, Week 24
Cohort 3: Change From Baseline in CD4+ Cell Percentage at Week 48Baseline, Week 48
Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Excluded AnalysesWeek 24The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 24 was analyzed based on missing = excluded analyses.
PK Parameter: Ctau of EVG, Emtricitabine (FTC), Tenofovir (TFV), and Cobicistat (COBI) (Cohort 1)0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4Ctau is defined as the observed drug concentration at the end of the dosing interval.
PK Parameter: Ctau of EVG, FTC, TFV and COBI (Cohort 2)(pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4Ctau is defined as the observed drug concentration at the end of the dosing interval.
PK Parameter: Ctau of EVG, FTC, TFV, and COBI (Cohort 3)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2Ctau is defined as the observed drug concentration at the end of the dosing interval.
PK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 1)0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4Cmax is defined as the maximum concentration of drug.
PK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 2)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4Cmax is defined as the maximum concentration of drug.
PK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 3)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2Cmax is defined as the maximum concentration of drug.
PK Parameter: CL/F of EVG and TAF (Cohort 1)0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4Apparent oral clearance (CL/F) is defined as the apparent clearance of the drug following oral administration.
PK Parameter: CL/F of EVG and TAF (Cohort 2)0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4CL/F is defined as the apparent clearance of the drug following oral administration.

Countries

South Africa, Thailand, Uganda, United States, Zimbabwe

Participant flow

Recruitment details

Participants were enrolled at study sites in South Africa, Thailand, Uganda, United States of America, and Zimbabwe.

Pre-assignment details

155 participants were screened.

Participants by arm

ArmCount
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kg
Treatment naive adolescents (12 to \< 18 years of age) with human immunodeficiency virus (HIV) received elvitegravir/cobicistat/emtricitabine/tenofovir alafenamide (E/C/F/TAF) (150/150/200/10 mg) fixed-dose combination (FDC) tablets, once daily orally with food for 48 weeks. Participants who completed 48 weeks of study treatment had the option to receive E/C/F/TAF in an extension phase of the study until: a) the participant turned 18 years old and E/C/F/TAF was commercially available for adults in the country in which the participant was enrolled; b) age-appropriate E/C/F/TAF became commercially available in participant's country.
50
Cohort 2: Age 6 to < 12 Years and Weight ≥ 25 kg
Children (6 to \< 12 years of age weighing ≥ 25 kg) with HIV who were virologically suppressed received E/C/F/TAF (150/150/200/10 mg) FDC tablets, once daily orally with food for 48 weeks. Participants who completed 48 weeks of study treatment had the option to receive E/C/F/TAF in an extension phase of the study until: a) the participant turned 18 years old and E/C/F/TAF was commercially available for adults in the country in which the participant was enrolled; b) age-appropriate E/C/F/TAF became commercially available in participant's country.
52
Cohort 3: Age ≥ 2 Years and Weight ≥ 14 to < 25 kg
Children (≥ 2 years of age weighing ≥ 14 to \< 25 kg) with HIV who were virologically suppressed received E/C/F/TAF (90/90/120/6 mg) FDC tablets, once daily orally with food for 48 weeks. Participants who attained a weight of ≥ 25 kg during the course of the study were switched to adult E/C/F/TAF (150/150/200/10 mg) tablets administered orally, once daily with food. Participants who completed 48 weeks of study treatment had the option to receive E/C/F/TAF in an extension phase of the study until: a) the participant turned 18 years old and E/C/F/TAF was commercially available for adults in the country in which the participant was enrolled; b) age-appropriate E/C/F/TAF became commercially available in participant's country.
27
Total129

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Extension PhaseInvestigator's Discretion100
Extension PhaseLost to Follow-up100
Extension PhaseNon-Compliance with study drug100
Extension PhasePregnancy100
Extension PhaseWithdrew consent010
Treatment Phase (48 Weeks)Lost to Follow-up100
Treatment Phase (48 Weeks)Withdrew consent110

Baseline characteristics

CharacteristicCohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Age 6 to < 12 Years and Weight ≥ 25 kgCohort 3: Age ≥ 2 Years and Weight ≥ 14 to < 25 kgTotal
Age, Continuous15 years
STANDARD_DEVIATION 1.9
10 years
STANDARD_DEVIATION 1.2
6 years
STANDARD_DEVIATION 1.9
11 years
STANDARD_DEVIATION 3.7
Age, Customized
12 to <18 Years
50 Participants0 Participants0 Participants50 Participants
Age, Customized
2 to <6 Years
0 Participants0 Participants11 Participants11 Participants
Age, Customized
6 to <12 Years
0 Participants52 Participants16 Participants68 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
50 Participants52 Participants27 Participants129 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
6 Participants13 Participants3 Participants22 Participants
Race (NIH/OMB)
Black or African American
44 Participants37 Participants24 Participants105 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
0 Participants2 Participants0 Participants2 Participants
Region of Enrollment
South Africa
3 Participants0 Participants13 Participants16 Participants
Region of Enrollment
Thailand
6 Participants13 Participants1 Participants20 Participants
Region of Enrollment
Uganda
30 Participants27 Participants8 Participants65 Participants
Region of Enrollment
United States
11 Participants12 Participants3 Participants26 Participants
Region of Enrollment
Zimbabwe
0 Participants0 Participants2 Participants2 Participants
Sex: Female, Male
Female
28 Participants30 Participants17 Participants75 Participants
Sex: Female, Male
Male
22 Participants22 Participants10 Participants54 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
1 / 500 / 520 / 27
other
Total, other adverse events
47 / 5045 / 5225 / 27
serious
Total, serious adverse events
10 / 507 / 521 / 27

Outcome results

Primary

Cohort 1: Percentage of Participants With All Treatment-Emergent Adverse Events (AEs) and Treatment-Emergent Serious Adverse Events (SAEs)

Treatment-emergent adverse events (TEAEs) were defined as any AEs that begin or worsen on or after the start of study drug through 30 days after the last dose of study drug. The severity was graded based on the Gilead Sciences Grading Scale for Severity of Adverse Events. An AE that met one or more of the following outcomes was classified as serious: * Fatal * Life-threatening * Disabling/incapacitating * Results in hospitalization or prolongs a hospital stay * A congenital abnormality * Other important medical events may also be considered serious AEs if they may require medical or surgical intervention to prevent one of the outcomes listed above.

Time frame: From first dose date up to Week 24

Population: Participants in the Safety Analysis Set (all participants who received at least 1 dose of study drug) with available data were analyzed.

ArmMeasureGroupValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With All Treatment-Emergent Adverse Events (AEs) and Treatment-Emergent Serious Adverse Events (SAEs)Any TEAEs81.3 percentage of participants
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With All Treatment-Emergent Adverse Events (AEs) and Treatment-Emergent Serious Adverse Events (SAEs)SAEs8.3 percentage of participants
Primary

Cohort 2: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEs

TEAEs were defined as any AEs that begin or worsen on or after the start of study drug through 30 days after the last dose of study drug. The severity was graded based on the Gilead Sciences Grading Scale for Severity of Adverse Events. An AE that met one or more of the following outcomes was classified as serious: * Fatal * Life-threatening * Disabling/incapacitating * Results in hospitalization or prolongs a hospital stay * A congenital abnormality * Other important medical events may also be considered serious AEs if they may require medical or surgical intervention to prevent one of the outcomes listed above.

Time frame: From first dose date up to Week 24

Population: Participants in the Safety Analysis Set with available data were analyzed.

ArmMeasureGroupValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEsAny TEAEs73.9 percentage of participants
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEsSAEs0 percentage of participants
Primary

Cohort 3: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEs

TEAEs were defined as any AEs that begin or worsen on or after the start of study drug through 30 days after the last dose of study drug. The severity was graded based on the Gilead Sciences Grading Scale for Severity of Adverse Events. An AE that met one or more of the following outcomes was classified as serious: * Fatal * Life-threatening * Disabling/incapacitating * Results in hospitalization or prolongs a hospital stay * A congenital abnormality * Other important medical events may also be considered serious AEs if they may require medical or surgical intervention to prevent one of the outcomes listed above.

Time frame: From first dose date up to Week 24

Population: Participants in the Safety Analysis Set were analyzed.

ArmMeasureGroupValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEsSAEs3.7 percentage of participants
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With All Treatment-Emergent AEs and Treatment-Emergent SAEsAny TEAEs70.4 percentage of participants
Primary

Pharmacokinetic (PK) Parameter: AUCtau of Elvitegravir (EVG) (Cohort 1)

AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4

Population: The PK Substudy Analysis Set included all enrolled and treated participants from Part A who had any nonmissing key PK parameters (AUCtau, AUClast, Cmax) from Week 4 intensive PK data for the respective analyte.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPharmacokinetic (PK) Parameter: AUCtau of Elvitegravir (EVG) (Cohort 1)23840.1 hr*ng/mLStandard Deviation 6076.15
Primary

PK Parameter: AUClast of TAF (Cohort 2)

AUClast is defined as the concentration of drug from time zero to the last observable concentration.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis set were analyzed.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUClast of TAF (Cohort 2)332.9 hr*ng/mLStandard Deviation 149.12
Primary

PK Parameter: AUClast of Tenofovir Alafenamide (TAF) (Cohort 1)

AUClast is defined as the concentration of drug from time zero to the last observable concentration, area under the concentration time curve to last observation (AUClast).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set were analyzed.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUClast of Tenofovir Alafenamide (TAF) (Cohort 1)188.9 hr*ng/mLStandard Deviation 105.45
Primary

PK Parameter: AUCtau of EVG (Cohort 2)

AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of EVG (Cohort 2)33813.9 hr*ng/mLStandard Deviation 19536.3
Primary

PK Parameter: AUCtau of EVG (Cohort 3)

AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2

Population: The Intensive PK Analysis Set included all enrolled and treated participants who had any nonmissing key PK parameters (AUCtau, AUClast, Cmax) from Week 2 intensive PK data for the respective analyte.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of EVG (Cohort 3)33245.6 hr*ng/mLStandard Deviation 15499.22
Primary

PK Parameter: AUCtau of TAF (Cohort 3)

AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2

Population: Participants in the Intensive PK Analysis Set (all enrolled and treated participants who had any nonmissing key PK parameters \[AUCtau, AUClast, Cmax\] from Week 2 intensive PK data for the respective analyte) with available data were analyzed.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of TAF (Cohort 3)366.4 hr*ng/mLStandard Deviation 144.91
Secondary

Cohort 1: Change From Baseline in CD4+ Cell Count at Week 48

Time frame: Baseline, Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in CD4+ Cell Count at Week 48Baseline471 cells/μLStandard Deviation 212.2
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in CD4+ Cell Count at Week 48Change at Week 48224 cells/μLStandard Deviation 170.3
Secondary

Cohort 1: Change From Baseline in CD4+ Cell Percentage at Week 24

Time frame: Baseline, Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in CD4+ Cell Percentage at Week 24Baseline23.6 percentage of CD4+ cellStandard Deviation 8.8
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in CD4+ Cell Percentage at Week 24Change at Week 247.7 percentage of CD4+ cellStandard Deviation 4.77
Secondary

Cohort 1: Change From Baseline in CD4+ Cell Percentage at Week 48

Time frame: Baseline, Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in CD4+ Cell Percentage at Week 48Baseline23.6 percentage of CD4+ cellStandard Deviation 8.8
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in CD4+ Cell Percentage at Week 48Change at Week 489.3 percentage of CD4+ cellStandard Deviation 5.19
Secondary

Cohort 1: Change From Baseline in Cluster of Differentiation (CD4+) Cell Count at Week 24

Time frame: Baseline, Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in Cluster of Differentiation (CD4+) Cell Count at Week 24Baseline471 cells/μLStandard Deviation 212.2
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in Cluster of Differentiation (CD4+) Cell Count at Week 24Change at Week 24191 cells/μLStandard Deviation 175.2
Secondary

Cohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 24

Time frame: Baseline, Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 24Baseline4.62 copies/mLStandard Deviation 0.587
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 24Change at Week 24-3.25 copies/mLStandard Deviation 0.645
Secondary

Cohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 48

Time frame: Baseline, Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 48Baseline4.62 copies/mLStandard Deviation 0.587
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Change From Baseline in Plasma log10 HIV-1 RNA at Week 48Change at Week 48-3.26 copies/mLStandard Deviation 0.712
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 400 Copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis94.0 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 24 was analyzed based on missing = excluded analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Excluded Analyses97.9 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Failure Analyses94.0 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 400 Copies/mL at Weeks 24 and 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis94.0 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = excluded analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Excluded Analyses97.9 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = failure analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Failure Analyses94.0 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 24

Population: The Full analysis set included all participants who were enrolled in the study and had received at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis90.0 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = excluded analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded Analyses93.8 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure Analyses90.0 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis92.0 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = excluded analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded Analyses95.8 percentage of participants
Secondary

Cohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = failure analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 1: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure Analyses92.0 percentage of participants
Secondary

Cohort 2: Change From Baseline in CD4+ Cell Count at Week 24

Time frame: Baseline, Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Count at Week 24Baseline961 cells/μLStandard Deviation 275.5
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Count at Week 24Change at Week 24-118 cells/μLStandard Deviation 194.1
Secondary

Cohort 2: Change From Baseline in CD4+ Cell Count at Week 48

Time frame: Baseline, Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Count at Week 48Baseline961 cells/µLStandard Deviation 275.5
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Count at Week 48Change at Week 48-66 cells/µLStandard Deviation 203.6
Secondary

Cohort 2: Change From Baseline in CD4+ Cell Percentage at Week 24

Time frame: Baseline, Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Percentage at Week 24Baseline38.2 percentage of CD4+ cellStandard Deviation 6.44
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Percentage at Week 24Change at Week 24-0.8 percentage of CD4+ cellStandard Deviation 3.97
Secondary

Cohort 2: Change From Baseline in CD4+ Cell Percentage at Week 48

Time frame: Baseline, Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Percentage at Week 48Change at Week 48-0.6 percentage of CD4+ cellStandard Deviation 4.37
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Change From Baseline in CD4+ Cell Percentage at Week 48Baseline38.2 percentage of CD4+ cellStandard Deviation 6.44
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 24 was analyzed based on missing = excluded analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Excluded Analyses100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 24 was analyzed based on missing = failure analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 24, Based on Missing = Failure Analyses100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = excluded analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Excluded Analyses100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 400 copies/mL at Week 48 was analyzed based on missing = failure analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 400 Copies/mL at Week 48, Based on Missing = Failure Analyses100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = excluded analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded Analyses100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure Analyses100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis98.1 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = excluded analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded Analyses100.0 percentage of participants
Secondary

Cohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = failure analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 2: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure Analyses100.0 percentage of participants
Secondary

Cohort 3: Change From Baseline in CD4+ Cell Count at Week 24

Time frame: Baseline, Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Count at Week 24Baseline1153 cells/μLStandard Deviation 459.9
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Count at Week 24Change at Week 24-137 cells/μLStandard Deviation 278.3
Secondary

Cohort 3: Change From Baseline in CD4+ Cell Count at Week 48

Time frame: Baseline, Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Count at Week 48Baseline1153 cells/µLStandard Deviation 459.9
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Count at Week 48Change at Week 48-179 cells/µLStandard Deviation 319.2
Secondary

Cohort 3: Change From Baseline in CD4+ Cell Percentage at Week 24

Time frame: Baseline, Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Percentage at Week 24Baseline35.9 percentage of CD4+ cellStandard Deviation 6.73
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Percentage at Week 24Change at Week 240.0 percentage of CD4+ cellStandard Deviation 4.4
Secondary

Cohort 3: Change From Baseline in CD4+ Cell Percentage at Week 48

Time frame: Baseline, Week 48

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Percentage at Week 48Baseline35.9 percentage of CD4+ cellStandard Deviation 6.73
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Change From Baseline in CD4+ Cell Percentage at Week 48Change at Week 480.2 percentage of CD4+ cellStandard Deviation 3.78
Secondary

Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, as Defined by the FDA Snapshot Analysis96.3 percentage of participants
Secondary

Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = excluded analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Excluded Analyses96.3 percentage of participants
Secondary

Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed based on missing = failure analyses.

Time frame: Week 24

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 24, Based on Missing = Failure Analyses96.3 percentage of participants
Secondary

Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, as Defined by the FDA Snapshot Analysis96.3 percentage of participants
Secondary

Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = excluded analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Excluded Analyses96.3 percentage of participants
Secondary

Cohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure Analyses

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 was analyzed based on missing = failure analyses.

Time frame: Week 48

Population: Participants in the Full Analysis Set were analyzed.

ArmMeasureValue (NUMBER)
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgCohort 3: Percentage of Participants With Plasma HIV-1 RNA < 50 Copies/mL at Week 48, Based on Missing = Failure Analyses96.3 percentage of participants
Secondary

PK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 1)

AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 1)TFV287.6 hr*ng/mLStandard Deviation 54.09
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 1)COBI8240.8 hr*ng/mLStandard Deviation 2972.94
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 1)FTC14424.4 hr*ng/mLStandard Deviation 3452.88
Secondary

PK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 2)

AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 2)FTC20629.2 hr*ng/mLStandard Deviation 3906.01
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 2)TFV440.2 hr*ng/mLStandard Deviation 92.13
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 2)COBI15890.7 hr*ng/mLStandard Deviation 8208.78
Secondary

PK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 3)

AUCtau is defined as concentration of drug over time (the area under the concentration versus time curve over the dosing interval).

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2

Population: Participants in the Intensive PK Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 3)FTC19468.1 hr*ng/mLStandard Deviation 5635.74
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 3)TFV334.9 hr*ng/mLStandard Deviation 76.77
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: AUCtau of FTC, TFV, and COBI (Cohort 3)COBI14485.2 hr*ng/mLStandard Deviation 7166.1
Secondary

PK Parameter: CL/F of EVG and TAF (Cohort 1)

Apparent oral clearance (CL/F) is defined as the apparent clearance of the drug following oral administration.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: CL/F of EVG and TAF (Cohort 1)EVG6.7 L/hrStandard Deviation 1.74
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: CL/F of EVG and TAF (Cohort 1)TAF68.6 L/hrStandard Deviation 52.64
Secondary

PK Parameter: CL/F of EVG and TAF (Cohort 2)

CL/F is defined as the apparent clearance of the drug following oral administration.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: CL/F of EVG and TAF (Cohort 2)EVG6.3 L/hrStandard Deviation 5.11
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: CL/F of EVG and TAF (Cohort 2)TAF31.9 L/hrStandard Deviation 11.21
Secondary

PK Parameter: CL/F of EVG and TAF (Cohort 3)

CL/F is defined as the apparent clearance of the drug following oral administration.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2

Population: Participants in the Intensive PK Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: CL/F of EVG and TAF (Cohort 3)EVG3.4 L/hrStandard Deviation 1.79
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: CL/F of EVG and TAF (Cohort 3)TAF18.5 L/hrStandard Deviation 6.27
Secondary

PK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 1)

Cmax is defined as the maximum concentration of drug.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 1)EVG2229.6 ng/mLStandard Deviation 427.93
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 1)TAF166.8 ng/mLStandard Deviation 107.44
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 1)FTC2265.0 ng/mLStandard Deviation 510.55
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 1)TFV17.6 ng/mLStandard Deviation 4.18
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 1)COBI1202.4 ng/mLStandard Deviation 421.21
Secondary

PK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 2)

Cmax is defined as the maximum concentration of drug.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 2)EVG3055.2 ng/mLStandard Deviation 1180.9
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 2)TAF313.3 ng/mLStandard Deviation 191.68
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 2)FTC3397.4 ng/mLStandard Deviation 916.06
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 2)TFV26.1 ng/mLStandard Deviation 5.43
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 2)COBI2079.4 ng/mLStandard Deviation 970.81
Secondary

PK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 3)

Cmax is defined as the maximum concentration of drug.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2

Population: Participants in the Intensive PK Analysis Set were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 3)EVG3297.2 ng/mLStandard Deviation 1720.38
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 3)TAF286.6 ng/mLStandard Deviation 206.97
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 3)FTC3007.4 ng/mLStandard Deviation 1138.1
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 3)TFV19.6 ng/mLStandard Deviation 4.72
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Cmax of EVG, TAF, FTC, TFV, and COBI (Cohort 3)COBI1525.5 ng/mLStandard Deviation 788.12
Secondary

PK Parameter: Ctau of EVG, Emtricitabine (FTC), Tenofovir (TFV), and Cobicistat (COBI) (Cohort 1)

Ctau is defined as the observed drug concentration at the end of the dosing interval.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, Emtricitabine (FTC), Tenofovir (TFV), and Cobicistat (COBI) (Cohort 1)TFV10.0 ng/mLStandard Deviation 2.13
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, Emtricitabine (FTC), Tenofovir (TFV), and Cobicistat (COBI) (Cohort 1)COBI25.0 ng/mLStandard Deviation 44.97
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, Emtricitabine (FTC), Tenofovir (TFV), and Cobicistat (COBI) (Cohort 1)EVG300.8 ng/mLStandard Deviation 243.69
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, Emtricitabine (FTC), Tenofovir (TFV), and Cobicistat (COBI) (Cohort 1)FTC102.4 ng/mLStandard Deviation 39.85
Secondary

PK Parameter: Ctau of EVG, FTC, TFV and COBI (Cohort 2)

Ctau is defined as the observed drug concentration at the end of the dosing interval.

Time frame: (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV and COBI (Cohort 2)EVG370.0 ng/mLStandard Deviation 438.52
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV and COBI (Cohort 2)FTC114.9 ng/mLStandard Deviation 27.7
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV and COBI (Cohort 2)TFV15.1 ng/mLStandard Deviation 3.77
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV and COBI (Cohort 2)COBI96.0 ng/mLStandard Deviation 162.01
Secondary

PK Parameter: Ctau of EVG, FTC, TFV, and COBI (Cohort 3)

Ctau is defined as the observed drug concentration at the end of the dosing interval.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2

Population: Participants in the Intensive PK Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV, and COBI (Cohort 3)EVG277.5 ng/mLStandard Deviation 223.43
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV, and COBI (Cohort 3)FTC82.5 ng/mLStandard Deviation 26.47
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV, and COBI (Cohort 3)TFV11.4 ng/mLStandard Deviation 2.65
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Ctau of EVG, FTC, TFV, and COBI (Cohort 3)COBI23.0 ng/mLStandard Deviation 23.02
Secondary

PK Parameter: Vz/F of EVG and TAF (Cohort 1)

Vz/F is defined as the apparent volume of distribution of the drug after oral administration.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 5 minutes, 0.25, 0.5, 1, 1.5, 2, 4, 5, 8 and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Vz/F of EVG and TAF (Cohort 1)EVG60.5 litersStandard Deviation 18.77
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Vz/F of EVG and TAF (Cohort 1)TAF49.7 litersStandard Deviation 32.54
Secondary

PK Parameter: Vz/F of EVG and TAF (Cohort 2)

Vz/F is defined as the apparent volume of distribution of the drug after oral administration.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, 8, and 24 hours post-dose at Week 4

Population: Participants in the PK Substudy Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Vz/F of EVG and TAF (Cohort 2)EVG46.8 litersStandard Deviation 36.02
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Vz/F of EVG and TAF (Cohort 2)TAF28.6 litersStandard Deviation 25.74
Secondary

PK Parameter: Vz/F of EVG and TAF (Cohort 3)

Vz/F is defined as the apparent volume of distribution of the drug after oral administration.

Time frame: 0 (pre-dose, ≤ 30 minutes prior to dosing), 0.25, 0.5, 1, 1.5, 2, 3, 4, 5, and 8 hours post-dose at Week 2

Population: Participants in the Intensive PK Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Vz/F of EVG and TAF (Cohort 3)EVG28.5 litersStandard Deviation 28.3
Cohort 1: Age 12 to < 18 Years and Weight ≥ 35 kgPK Parameter: Vz/F of EVG and TAF (Cohort 3)TAF16.3 litersStandard Deviation 11.07

Source: ClinicalTrials.gov · Data processed: Mar 12, 2026