The purpose of this study is to evaluate the pharmacokinetics (PK) of rilpivirine/Tenofovir/Emtricitabine (RPV/TFV/FTC) after a single-oral administration of Complera (the fixed-dose combination of RPV, FTC, Tenefovir disoproxil fumarate \[TDF\]) to healthy Japanese adult male participants.
This is a single center, open-label, single oral dose study in healthy Japanese adult male participants. The study consists of 3 phases; a screening phase up to 27 days (Day -28 to Day -2), an in-patient phase from Day -1 to Day 3 (dosing day is Day 1), and a follow-up assessment phase from Day 4 to the last follow-up assessment scheduled on Day 15 or at the time of early withdrawal. All participants will receive a single oral dose of one Complera tablet on Day 1 within 5 minutes after completion of the standardized breakfast. Pharmacokinetics of RPV/TFV/FTC will be assessed as the primary objective of the study. Safety of each participant will be assessed throughout the study.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
8
Fixed dose combination tablet contains 25 milligram (mg) of Rilpivirine, 300 mg of Tenofovir Disoproxil Fumarate (TDF) and 200 mg of Emtricitabine (FTC).
Unnamed facility
Fukuoka, Japan
Maximum Observed Plasma Concentration (Cmax)
The Cmax is the maximum observed plasma concentration of rilpivirine, tenofovir, emtricitabine.
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
Time to Reach Maximum Observed Plasma Concentration (Tmax)
The Tmax is defined as actual sampling time to reach maximum observed analyte (rilpivirine/tenofovir/emtricitabine) concentration.
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
Area Under the Plasma Concentration-Time Curve From Time Zero to Last Quantifiable Time (AUC [0-last])
The AUC (0-last) is the area under the plasma concentration-time curve for rilpivirine/tenofovir/emtricitabine from time zero to last quantifiable time.
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
Area Under the Plasma Concentration-Time Curve From Time Zero to Infinite Time (AUC[0-infinity])
The 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.
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
Elimination Rate Constant (Lambda[z])
Lambda(z) is first-order 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 concentration-time curve.
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
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Elimination Half-Life (t1/2)
The elimination half-life (t1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration. It is associated with the terminal slope of the semi logarithmic drug concentration-time curve, and is calculated as 0.693/lambda(z).
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
Apparent Volume of Distribution (Vdz/F)
Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Apparent volume of distribution after oral dose (Vdz/F) is influenced by the fraction absorbed.
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
Apparent Clearance (CL/F)
Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.
Time frame: Pre-dose, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 168 and 192 hours post-dose
Number of Participants who Experience Adverse Events
As a measure of safety and tolerability.
Time frame: Up to 17 days following study drug administration