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A Bioequivalence Study of Darunavir, Emtricitabine, and Tenofovir Alafenamide, in the Presence of Cobicistat in Healthy Participants

A Single-Dose, Open-Label, Randomized, Crossover Study to Assess the Bioequivalence of Darunavir 800 mg, Emtricitabine 200 mg, and Tenofovir Alafenamide 10 mg, in the Presence of Cobicistat 150 mg, Administered as Either a Fixed-Dose Combination Tablet or as Separate Agents in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02578550
Enrollment
126
Registered
2015-10-19
Start date
2015-11-30
Completion date
2016-02-29
Last updated
2025-02-03

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

Conditions

Healthy

Keywords

Immunodeficiency Virus Type 1, Human, Darunavir, Cobicistat, Emtricitabine, Tenofovir alafenamide, Healthy participants

Brief summary

The purpose of this study is to evaluate the single-dose pharmacokinetics and pivotal bioequivalence of Darunavir (DRV) 800 milligram (mg), Emtricitabine (FTC) 200 mg, and tenofovir alafenamide (TAF) 10 mg when administered as a fixed-dose combination (FDC) (D/C/F/TAF) relative to the separate agents (DRV 800 mg tablet formulation and FTC/TAF 200/10 mg FDC) in the presence of 150 mg Cobicistat (COBI), under fed conditions, in healthy participants.

Detailed description

This is a Phase 1, open-label, randomized, 2-way crossover study in 96 healthy adult participants. The study consists of 2 treatment sessions. Participants will receive in one session a single dose of darunavir/cobicistat/emtricitabine/tenofovir alafenamide (D/C/F/TAF) 800/150/200/10 milligram (mg) tablets as fixed-dose combination (FDC) and in another session Darunavir (DRV) as 1x 800 mg tablet, Emtricitabine/ tenofovir alafenamide (FTC/TAF) as 1x 200/10 mg FDC tablet, and Cobicistat (COBI) 150 mg as 1x 150 mg tablet all under fed conditions. Treatment sessions will be separated by a washout period of at least 7 days. The duration of the study for an individual participant will be at least 12 days, Screening and Follow-up not included. Participants safety will be monitored throughout the study.

Interventions

DRUGDarunavir

A single tablet containing darunavir 800 mg will be administered.

DRUGCobicistat

A single table containing cobistat 150 mg will be administered.

DRUGEmtricitabine/tenofovir alafenamide FDC

A single tablet containing FTC 200 mg and TAF 10 mg will be administered.

DRUGDarunavir/Cobicistat/Emtricitabine/Tenofovir Alafenamide fixed-dose combination (FDC)

A single tablet containing DRV 800 mg, COBI 150 mg, FTC 200 mg and TAF 10 mg will be administered.

Sponsors

Janssen Sciences Ireland UC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Participant must be non-smoker for at least 3 months prior to selection * Participant must be healthy on the basis of physical examination, medical history, vital signs, and 12-lead electrocardiogram (ECG) performed at Screening. If the results are outside the normal reference ranges, the participant may be included only if they are not listed under the

Exclusion criteria

and if the Investigator judges the abnormalities or deviations from normal to be not clinically significant. This determination must be recorded in the participant's source documents and initialed/signed by the Investigator * Participant must have a body mass index (BMI), between 18.5 and 30 kilogram per square meter (kg/m\^2) (inclusive) * Participant must be healthy on the basis of clinical laboratory tests performed at Screening. If the results of the biochemistry panel, blood coagulation, hematology, or urinalysis are outside the normal reference ranges, the participant may be included only if the abnormalities or deviations from normal are not listed in the

Design outcomes

Primary

MeasureTime frameDescription
Maximum Observed Plasma Concentration (Cmax) of Darunavir, Cobicistat, Emtricitabine and Tenofovir AlafenamideUp to 72 hours post-doseThe Cmax is the maximum observed plasma concentration.
Area Under the Plasma Concentration-Time Curve From Time Zero to Last Quantifiable Time (AUC [0-last]) of Darunavir, Cobicistat, Emtricitabine and Tenofovir AlafenamideUp to 72 hours post-doseThe AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time.
Area Under the Plasma Concentration-Time Curve From Time Zero to Infinite Time (AUC[0-infinity]) of Darunavir, Cobicistat, Emtricitabine and Tenofovir AlafenamideUp to 72 hours post-doseThe AUC (0-infinity) is the area under the plasma concentration-time curve from time zero to infinite time, calculated as the sum of AUC(last) and C(last)/lambda(z); wherein AUC(last) is area under the plasma concentration-time curve from time zero to last quantifiable time, C(last) is the last observed quantifiable concentration, and lambda(z) is elimination rate constant.

Secondary

MeasureTime frameDescription
Elimination HalfLife (t1/2) of Darunavir (DRV), Cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseThe elimination halflife (t1/2) is the time needed for the plasma concentration to decrease to 1 half of its original value. It is associated with the terminal slope of the semi logarithmic drug concentrationtime curve, and is calculated as 0.693/lambda(z).
Time to Last Quantifiable Plasma Concentration (Tlast) of Darunavir (DRV), cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseThe Tlast is the time to last observed quantifiable plasma concentration.
Ratio of AUClast of Darunavir (DRV), Cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseRatio of individual AUClast values between Treatment A and B.
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Darunavir (DRV), cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseThe Tmax is defined as actual sampling time to reach maximum observed plasma concentration.
Ratio of Cmax of Darunavir (DRV), Cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseRatio of individual Cmax values between Treatment A and B.
Number of Subjects with Adverse EventsFrom signing the Informed Consent Form (ICF) up to 10 days after last study drug administrationAn adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product.
Ratio of AUC[0infinity] of Darunavir (DRV), Cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseRatio of individual AUC\[0infinity\] values between Treatment A and B.
Plasma Concentration at the Last Quantifiable Time Point (Clast) of Darunavir (DRV), Cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseThe Clast is the last observed quantifiable plasma concentration above the quantification limit.
Elimination Rate Constant (Lambda[z]) of Darunavir (DRV), Cobicistat (COBI), Emtricitabine (FTC) and Tenofovir Alafenamide (TAF)Up to 72 hours post-doseLambda(z) is firstorder elimination rate constant associated with the terminal portion of the curve, determined as the negative slope of the terminal log linear phase of the drug concentrationtime curve.

Countries

Netherlands

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 23, 2026