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Single and Multiple Dose Study of Uprifosbuvir (MK-3682/IDX21437) in Healthy and Hepatitis C Virus (HCV)-Infected Participants (MK-3682-001)

A Phase I/IIa Study Assessing Single and Multiple Doses of IDX21437 in Healthy and HCV-Infected Subjects

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01974687
Enrollment
178
Registered
2013-11-01
Start date
2013-10-31
Completion date
2015-09-11
Last updated
2018-09-13

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

Conditions

Chronic Hepatitis C

Keywords

Hepatitis C virus, HCV

Brief summary

This is a multi-part study to evaluate the safety, tolerability, and pharmacokinetics (PK) of uprifosbuvir (MK-3682/IDX21437) in healthy participants and in participants infected with Hepatitis C virus (HCV) genotype (GT)1-GT6. The effect of food on the PK of uprifosbuvir will be evaluated. The antiviral activity of uprifosbuvir will also be assessed in HCV-infected participants.

Interventions

Uprifosbuvir 5 mg, 25 mg, or 50 mg capsule, or 150 mg tablet, administered by mouth.

DRUGPlacebo

Matching placebo to uprifosbuvir capsule administered by mouth.

DRUGItraconazole

Itraconazole is supplied as 10 mg/mL oral solution or 100 mg capsules administered by mouth.

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

All Participants: * of childbearing potential must have agreed to use a double method of birth control (one of which must be a barrier) from Screening through at least 90 days after the last dose of the study drug * must not have consumed grapefruit or grapefruit juice within 7 days of Day -1 and throughout the study HCV Participants: * documented clinical history compatible with chronic hepatitis C. * have not received direct-acting antiviral treatment for hepatitis C infection * has HCV Genotype 1, 2, 3, 4, 5 or 6

Exclusion criteria

All Participants: * pregnant or breastfeeding * co-infected with hepatitis B virus (HBV) and/or human immunodeficiency virus (HIV). * decompensated liver disease * other clinically significant medical conditions or laboratory abnormalities.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)Up to 42 daysAn SAE was defined as any untoward medical occurrence that at any dose that: resulted in death, was life threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, or was an important medical event. The percentage of participants who experienced at least one SAE is presented.
Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)Up to 42 daysAn AE was defined as any untoward medical occurrence in a participant administered study drug, and that does not necessarily have a causal relationship with the study drug(s). An AE can be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of study drug(s), whether or not related to study drug(s). The percentage of participants who experienced at least one AE is presented.
Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)Up to 13 daysA DLT was defined as any of the following events: Any SAE considered by the investigator to be at least reasonably or possibly related to study drug; Any Grade 3 clinical AE considered by the investigator to be at least reasonably or possibly related to study drug; Any Grade 3 confirmed laboratory abnormalities considered by the investigator to be at least reasonably or possibly related to study drug, except for asymptomatic Grade ¾ cholesterol and triglyceride; Any clinical or laboratory AE of any intensity that is considered by the investigator to be at least reasonably or possibly related to study drug that necessitates permanent discontinuation of study drug; Confirmed increase in QT interval corrected for heart rate using Fridericia's (QTcF) formula ≥60 msec over Baseline or an absolute QTcF ≥500 msec.
Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityUp to 42 daysLaboratory abnormalities were graded using the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events. Treatment-emergent AEs (TEAEs)were graded as: Grade 1: Mild TEAE as Worst Severity; Grade 2: Moderate TEAE as Worst Severity; Grade 3: Severe TEAE as Worst Severity; Grade 4: Potentially Life-Threatening TEAE as Worst Severity; Grade 5: TEAE Leading to Death. The percentage of participants who experienced at least one Grade 1, 2, 3, 4 or 5 laboratory abnormality is presented.
Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AEUp to 14 daysThe percentage of participants who discontinued study drug due to an AE is presented.
Area Under the Plasma Drug Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration. All participants were fasted.
AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
Maximum (Peak) Observed Plasma Drug Concentration (Cmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained. All participants were fasted.
Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained. All participants were fasted.
Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Time to Maximum Plasma Concentration (Tmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained. All participants were fasted.
Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of Uprifosbuvir After Singe Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseAUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.
t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Observed Terminal Half-Life (t1/2) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained. All participants were fasted.
t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity for M6, a metabolite of uprifosbuvir, estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only. All participants were fasted.
AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
AUC0-inf of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseArea under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.
Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained. All participants were fasted.
Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseMaximum observed plasma drug concentration was obtained.
Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained. All participants were fasted.
Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1,HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseTime to maximum plasma concentration was obtained.
t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained. All participants were fasted.
t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseThe time measured for the plasma concentration to decrease by one half (t1/2) was obtained.
Cumulative Urine Excretion of Unchanged Uprifosbuvir in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseCumulative urine excretion of unchanged MK-3682 in healthy participants was obtained. All participants were fasted.
Cumulative Urine Excretion of Unchanged M6 in Healthy Participants (Group A)Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdoseCumulative urine excretion of unchanged M6 in healthy participants was obtained. All participants were fasted.
Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline and Day 8Reduction in HCV RNA from baseline on Day 8 following uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-infected participants was obtained.
Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Baseline and 28 days after last dose of study drug (Up to 42 days)Reduction in HCV RNA from baseline on Day 8 following uprifosbuvir 50-450 mg for 7 Days in Genotype (Gt) 1, HCV-infected participants was obtained.

Participant flow

Recruitment details

Per protocol, the Group D part of the study allowed to randomize Genotype 2, 3, 4, 5 and 6 Hepatitis C Virus (HCV)-infected participants, however, only Genotype 2 and 3 HCV-infected participants were enrolled.

Participants by arm

ArmCount
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)
Participants were administered a single dose of uprifosbuvir-matching placebo as oral capsules under fasted conditions (Cohorts 1a, 2a, 3a, 5a); Participants were administered single doses of uprifosbuvir-matching placebo as oral capsules on Days 1 and 7 in a 2-period crossover design (fasted/fed) with a 6 day washout between dosing periods (Cohort 4a).
10
Group A: Uprifosbuvir 10 mg (Cohort 1a)
Participants were administered a single dose of uprifosbuvir 10 mg as oral capsules under fasted conditions.
6
Group A: Uprifosbuvir 25 mg (Cohort 2a)
Participants were administered a single dose of uprifosbuvir 25 mg as oral capsules under fasted conditions.
6
Group A: Uprifosbuvir 150 mg (Cohort 4a)
Participants were administered single doses of uprifosbuvir 150 mg as oral capsules on Days 1 and 7 in a 2-period crossover design (fasted/fed) with a 6 day washout between dosing periods.
6
Group A: Uprifosbuvir 300 mg (Cohort 5a)
Participants were administered a single dose of uprifosbuvir 300 mg as oral capsules under fasted conditions.
6
Group A: Placebo (Cohort 6a)
Participants were administered single doses of uprifosbuvir-matching placebo oral capsules once daily for 7 days under fasted conditions.
2
Group A: Uprifosbuvir 300 mg (Cohort 6a)
Participants were administered single doses of uprifosbuvir 300 mg as oral capsules once daily for 7 days under fasted conditions.
6
Group B: Uprifosbuvir 10 mg (Cohort 1b)
Participants were administered a single dose of uprifosbuvir 10 mg as oral capsules under fasted conditions.
3
Group B: Uprifosbuvir 25 mg (Cohort 2b)
Participants were administered a single dose of uprifosbuvir 25 mg as oral capsules under fasted conditions.
3
Group B: Uprifosbuvir 50 mg (Cohort 3b)
Participants were administered a single dose of uprifosbuvir 50 mg as oral capsules under fasted conditions.
3
Group B: Uprifosbuvir 150 mg (Cohort 4b)
Participants were administered a single dose of uprifosbuvir 150 mg as oral capsules under fasted conditions.
3
Group B: Uprifosbuvir 300 mg (Cohort 5b)
Participants were administered a single dose of uprifosbuvir 300 mg as oral capsules under fasted conditions.
3
Groups C & D: Uprifosbuvir 50 mg (Capsule)
Participants were administered single doses of uprifosbuvir 50 mg as oral capsules once daily for 7 days under fasted conditions.
11
Groups C & D: Uprifosbuvir 150 mg (Capsule)
Participants were administered single doses of uprifosbuvir 150 mg as oral capsules once daily for 7 days under fasted conditions.
10
Groups C & D: Uprifosbuvir 250 mg (Capsule)
Participants were administered single doses of uprifosbuvir 250 mg as oral capsules once daily for 7 days under fasted conditions.
8
Groups C & D: Uprifosbuvir 300 mg (Capsule)
Participants were administered single doses of uprifosbuvir 300 mg as oral capsules once daily for 7 days under fasted conditions.
18
Groups C & D: Uprifosbuvir 400 mg (Capsule)
Participants were administered single doses of uprifosbuvir 400 mg as oral capsules once daily for 7 days under fasted conditions.
8
Groups C & D: Uprifosbuvir 300 mg (Tablet)
Participants were administered single doses of uprifosbuvir 300 mg as oral tablets once daily for 7 days under fasted conditions.
8
Groups C & D: Uprifosbuvir 450 mg (Tablet)
Participants were administered single doses of uprifosbuvir 450 mg as oral tablets once daily for 7 days under fasted conditions.
8
Groups C & D: Placebo (Pooled)
Participants were administered single doses of uprifosbuvir-matching placebo as oral capsules once daily for 7 days under fasted conditions.
9
Group E: Uprifosbuvir 150 mg (Cohort 1e)
Participants were administered a single dose of uprifosbuvir 150 mg as oral capsules under fasted conditions.
3
Group E: Uprifosbuvir 300 mg (Cohort 2e)
Participants were administered single doses of uprifosbuvir 300 mg as oral capsules once daily for 7 days under fasted conditions.
3
Group E: Uprifosbuvir 450 mg (Cohort 3e)
Participants were administered single doses of uprifosbuvir 450 mg as oral tablets once daily for 7 days under fasted conditions.
8
Group F: Uprifosbuvir 300 mg (Tablet)
Participants were administered single doses of uprifosbuvir 300 mg as oral tablets once daily for 7 days under fasted conditions. Participants were also administered itraconazole 200 mg twice daily as oral solution on Day -5 and 200 mg once daily from Day -4 to Day 11.
8
Group A: Uprifosbuvir 50 mg (Cohort 3a)
Participants were administered a single dose of uprifosbuvir 50 mg as oral capsules under fasted conditions.
6
Total165

Baseline characteristics

CharacteristicGroups C & D: Uprifosbuvir 300 mg (Capsule)Groups C & D: Uprifosbuvir 400 mg (Capsule)Groups C & D: Uprifosbuvir 300 mg (Tablet)Groups C & D: Uprifosbuvir 450 mg (Tablet)Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Group A: Uprifosbuvir 10 mg (Cohort 1a)Group A: Uprifosbuvir 25 mg (Cohort 2a)Group A: Uprifosbuvir 150 mg (Cohort 4a)Group A: Uprifosbuvir 300 mg (Cohort 5a)Group A: Placebo (Cohort 6a)Group A: Uprifosbuvir 300 mg (Cohort 6a)Group B: Uprifosbuvir 10 mg (Cohort 1b)Group B: Uprifosbuvir 25 mg (Cohort 2b)Group B: Uprifosbuvir 50 mg (Cohort 3b)Group B: Uprifosbuvir 150 mg (Cohort 4b)Group B: Uprifosbuvir 300 mg (Cohort 5b)Groups C & D: Uprifosbuvir 50 mg (Capsule)Groups C & D: Uprifosbuvir 150 mg (Capsule)Groups C & D: Uprifosbuvir 250 mg (Capsule)Groups C & D: Placebo (Pooled)Group E: Uprifosbuvir 150 mg (Cohort 1e)Group E: Uprifosbuvir 300 mg (Cohort 2e)Group E: Uprifosbuvir 450 mg (Cohort 3e)Group F: Uprifosbuvir 300 mg (Tablet)Group A: Uprifosbuvir 50 mg (Cohort 3a)Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
18 Participants8 Participants8 Participants8 Participants10 Participants6 Participants6 Participants6 Participants6 Participants2 Participants6 Participants3 Participants3 Participants3 Participants3 Participants3 Participants11 Participants10 Participants8 Participants9 Participants3 Participants3 Participants8 Participants8 Participants6 Participants165 Participants
Age, Continuous40.1 Years
STANDARD_DEVIATION 11.69
43.3 Years
STANDARD_DEVIATION 8.45
40.5 Years
STANDARD_DEVIATION 11.7
40.5 Years
STANDARD_DEVIATION 8.94
35.3 Years
STANDARD_DEVIATION 7.72
29.2 Years
STANDARD_DEVIATION 7.36
33.3 Years
STANDARD_DEVIATION 15.06
35.5 Years
STANDARD_DEVIATION 11.76
35.2 Years
STANDARD_DEVIATION 9.87
36.0 Years
STANDARD_DEVIATION 2.83
35.3 Years
STANDARD_DEVIATION 12.69
37.0 Years
STANDARD_DEVIATION 9.54
42.3 Years
STANDARD_DEVIATION 7.23
46.7 Years
STANDARD_DEVIATION 4.16
43.3 Years
STANDARD_DEVIATION 5.69
41.3 Years
STANDARD_DEVIATION 8.96
41.2 Years
STANDARD_DEVIATION 10.68
42.7 Years
STANDARD_DEVIATION 10.37
44.3 Years
STANDARD_DEVIATION 8.63
43.7 Years
STANDARD_DEVIATION 7.68
57.0 Years
STANDARD_DEVIATION 4.36
56.3 Years
STANDARD_DEVIATION 3.06
49.1 Years
STANDARD_DEVIATION 8.04
43.1 Years
STANDARD_DEVIATION 12.54
31.3 Years
STANDARD_DEVIATION 11.6
40.47 Years
STANDARD_DEVIATION 10.85
Sex: Female, Male
Female
5 Participants3 Participants5 Participants4 Participants4 Participants4 Participants2 Participants5 Participants4 Participants0 Participants4 Participants0 Participants0 Participants1 Participants2 Participants1 Participants5 Participants0 Participants5 Participants3 Participants0 Participants0 Participants1 Participants6 Participants3 Participants67 Participants
Sex: Female, Male
Male
13 Participants5 Participants3 Participants4 Participants6 Participants2 Participants4 Participants1 Participants2 Participants2 Participants2 Participants3 Participants3 Participants2 Participants1 Participants2 Participants6 Participants10 Participants3 Participants6 Participants3 Participants3 Participants7 Participants2 Participants3 Participants98 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
EG013
affected / at risk
EG014
affected / at risk
EG015
affected / at risk
EG016
affected / at risk
EG017
affected / at risk
EG018
affected / at risk
EG019
affected / at risk
EG020
affected / at risk
EG021
affected / at risk
EG022
affected / at risk
EG023
affected / at risk
EG024
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —
other
Total, other adverse events
5 / 100 / 62 / 62 / 64 / 63 / 61 / 22 / 61 / 32 / 31 / 32 / 32 / 38 / 117 / 107 / 88 / 185 / 86 / 85 / 86 / 90 / 33 / 35 / 83 / 8
serious
Total, serious adverse events
0 / 100 / 60 / 60 / 60 / 60 / 60 / 20 / 60 / 30 / 30 / 30 / 30 / 30 / 110 / 100 / 80 / 180 / 80 / 80 / 80 / 90 / 30 / 30 / 80 / 8

Outcome results

Primary

Area Under the Plasma Drug Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: Pharmacokinetics (PK) Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Area Under the Plasma Drug Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.0410 h*umol/LGeometric Coefficient of Variation 32.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Area Under the Plasma Drug Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.0837 h*umol/LGeometric Coefficient of Variation 27.9
Group A: Uprifosbuvir 25 mg (Cohort 2a)Area Under the Plasma Drug Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1.67 h*umol/LGeometric Coefficient of Variation 62.7
Group A: Uprifosbuvir 50 mg (Cohort 3a)Area Under the Plasma Drug Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)2.78 h*umol/LGeometric Coefficient of Variation 37.7
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Area Under the Plasma Drug Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.246 h*umol/LGeometric Coefficient of Variation 63.2
Primary

AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 113.4 h*umol/LGeometric Coefficient of Variation 22.3
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 717.5 h*umol/LGeometric Coefficient of Variation 23.5
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 118.4 h*umol/LGeometric Coefficient of Variation 17
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 726.1 h*umol/LGeometric Coefficient of Variation 26.5
Primary

AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 14.74 h*umol/LGeometric Coefficient of Variation 37.6
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 77.12 h*umol/LGeometric Coefficient of Variation 37.6
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 712.2 h*umol/LGeometric Coefficient of Variation 18.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 18.94 h*umol/LGeometric Coefficient of Variation 20.2
Group A: Uprifosbuvir 25 mg (Cohort 2a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 114.4 h*umol/LGeometric Coefficient of Variation 20.8
Group A: Uprifosbuvir 25 mg (Cohort 2a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 719.0 h*umol/LGeometric Coefficient of Variation 16.3
Group A: Uprifosbuvir 50 mg (Cohort 3a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 119.4 h*umol/LGeometric Coefficient of Variation 11.1
Group A: Uprifosbuvir 50 mg (Cohort 3a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 724.4 h*umol/LGeometric Coefficient of Variation 7.2
Primary

AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 115.1 h*umol/LGeometric Coefficient of Variation 16.5
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 720.6 h*umol/LGeometric Coefficient of Variation 17.9
Primary

AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 114.7 h*umol/LGeometric Coefficient of Variation 36.6
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 721.4 h*umol/LGeometric Coefficient of Variation 26.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 116.1 h*umol/LGeometric Coefficient of Variation 23.5
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 724.7 h*umol/LGeometric Coefficient of Variation 22.5
Primary

AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 113.2 h*umol/LGeometric Coefficient of Variation 32
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 723.8 h*umol/LGeometric Coefficient of Variation 37
Primary

AUC0-inf of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)1.05 h*umol/L
Primary

AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)17.9 h*umol/LGeometric Coefficient of Variation 13.4
Primary

AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)

Area under the drug concentration-time curve from time zero to infinity estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)2.26 h*umol/LGeometric Coefficient of Variation 22.3
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)5.78 h*umol/LGeometric Coefficient of Variation 4.7
Group A: Uprifosbuvir 25 mg (Cohort 2a)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)7.31 h*umol/LGeometric Coefficient of Variation 11.1
Group A: Uprifosbuvir 50 mg (Cohort 3a)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)17.5 h*umol/L
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)33.4 h*umol/LGeometric Coefficient of Variation 37
Primary

AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

Area under the drug concentration-time curve from time zero to infinity for M6, a metabolite of uprifosbuvir, estimated as AUC0-t + Cest/λz, where λz is the terminal elimination rate constant, calculated for the first dose only. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1.68 h*umol/LGeometric Coefficient of Variation 47.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)5.01 h*umol/LGeometric Coefficient of Variation 27.2
Group A: Uprifosbuvir 25 mg (Cohort 2a)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)19.8 h*umol/LGeometric Coefficient of Variation 12.7
Group A: Uprifosbuvir 50 mg (Cohort 3a)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)29.7 h*umol/LGeometric Coefficient of Variation 32.1
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)AUC0-inf of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)8.77 h*umol/LGeometric Coefficient of Variation 8.4
Primary

AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 13.19 h*umol/LGeometric Coefficient of Variation 32.8
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 72.31 h*umol/LGeometric Coefficient of Variation 31.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 14.21 h*umol/LGeometric Coefficient of Variation 35.2
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 73.51 h*umol/LGeometric Coefficient of Variation 23.2
Primary

AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 110.6 h*umol/LGeometric Coefficient of Variation 44
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 79.39 h*umol/LGeometric Coefficient of Variation 46.1
Primary

AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 70.347 h*umol/LGeometric Coefficient of Variation 36.2
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 10.394 h*umol/LGeometric Coefficient of Variation 51.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 70.935 h*umol/LGeometric Coefficient of Variation 36.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 11.01 h*umol/LGeometric Coefficient of Variation 52.9
Group A: Uprifosbuvir 25 mg (Cohort 2a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 12.80 h*umol/LGeometric Coefficient of Variation 45.4
Group A: Uprifosbuvir 25 mg (Cohort 2a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 72.42 h*umol/LGeometric Coefficient of Variation 46.8
Group A: Uprifosbuvir 50 mg (Cohort 3a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 74.59 h*umol/LGeometric Coefficient of Variation 22.1
Group A: Uprifosbuvir 50 mg (Cohort 3a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 15.54 h*umol/LGeometric Coefficient of Variation 40.1
Primary

AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 13.62 h*umol/LGeometric Coefficient of Variation 34
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 73.77 h*umol/LGeometric Coefficient of Variation 21.7
Primary

AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 12.00 h*umol/LGeometric Coefficient of Variation 51.7
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 71.82 h*umol/LGeometric Coefficient of Variation 43.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 13.11 h*umol/LGeometric Coefficient of Variation 45
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-t of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 72.88 h*umol/LGeometric Coefficient of Variation 30.4
Primary

AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)1.05 h*umol/L
Primary

AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)1.05 h*umol/LGeometric Coefficient of Variation 48.5
Primary

AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)0.0640 h*umol/LGeometric Coefficient of Variation 39.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)0.228 h*umol/LGeometric Coefficient of Variation 49.1
Group A: Uprifosbuvir 25 mg (Cohort 2a)AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)0.341 h*umol/LGeometric Coefficient of Variation 20.4
Group A: Uprifosbuvir 50 mg (Cohort 3a)AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)1.17 h*umol/L
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)AUC0-t of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)1.39 h*umol/LGeometric Coefficient of Variation 35.4
Primary

Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 11100 nmol/LGeometric Coefficient of Variation 11.5
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 71550 nmol/LGeometric Coefficient of Variation 11.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 11180 nmol/LGeometric Coefficient of Variation 11.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 71740 nmol/LGeometric Coefficient of Variation 19.7
Primary

Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 1298 nmol/LGeometric Coefficient of Variation 34.2
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 7471 nmol/LGeometric Coefficient of Variation 33.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 7931 nmol/LGeometric Coefficient of Variation 14.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 1641 nmol/LGeometric Coefficient of Variation 7.6
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 11130 nmol/LGeometric Coefficient of Variation 22.7
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 71420 nmol/LGeometric Coefficient of Variation 15.3
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 11560 nmol/LGeometric Coefficient of Variation 18.9
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 71760 nmol/LGeometric Coefficient of Variation 10.4
Primary

Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 11310 nmol/LGeometric Coefficient of Variation 7.5
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 71630 nmol/LGeometric Coefficient of Variation 14.9
Primary

Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 71420 nmol/LGeometric Coefficient of Variation 23.2
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 11010 nmol/LGeometric Coefficient of Variation 31.5
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 11210 nmol/LGeometric Coefficient of Variation 21.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 71680 nmol/LGeometric Coefficient of Variation 21.5
Primary

Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 71180 nmol/LGeometric Coefficient of Variation 33.2
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 1738 nmol/LGeometric Coefficient of Variation 31.7
Primary

Cmax of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

Maximum observed plasma drug concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)597 nmol/L
Primary

Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

Maximum observed plasma drug concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)509 nmol/LGeometric Coefficient of Variation 8.4
Primary

Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)

Maximum observed plasma drug concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)55.0 nmol/LGeometric Coefficient of Variation 15
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)170 nmol/LGeometric Coefficient of Variation 7.2
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)279 nmol/LGeometric Coefficient of Variation 5.2
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)710 nmol/L
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)1210 nmol/LGeometric Coefficient of Variation 33.8
Primary

Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

Maximum observed plasma drug concentration was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)63.2 nmol/LGeometric Coefficient of Variation 19.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)146 nmol/LGeometric Coefficient of Variation 13.6
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)758 nmol/LGeometric Coefficient of Variation 28.2
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1190 nmol/LGeometric Coefficient of Variation 16.6
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Cmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)283 nmol/LGeometric Coefficient of Variation 14.7
Primary

Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 11440 nmol/LGeometric Coefficient of Variation 35.9
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 71550 nmol/LGeometric Coefficient of Variation 47.5
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 11090 nmol/LGeometric Coefficient of Variation 34.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 7929 nmol/LGeometric Coefficient of Variation 26.6
Primary

Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 12140 nmol/LGeometric Coefficient of Variation 39.4
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 71910 nmol/LGeometric Coefficient of Variation 42.6
Primary

Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)

Maximum observed plasma drug concentration was obtained. All participants were fasted.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 1286 nmol/LGeometric Coefficient of Variation 77.1
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 7199 nmol/LGeometric Coefficient of Variation 45.6
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 7587 nmol/LGeometric Coefficient of Variation 34.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 1524 nmol/LGeometric Coefficient of Variation 80.1
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 11360 nmol/LGeometric Coefficient of Variation 55.5
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 71200 nmol/LGeometric Coefficient of Variation 59.4
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 12320 nmol/LGeometric Coefficient of Variation 50.2
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 72490 nmol/LGeometric Coefficient of Variation 25.7
Primary

Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 12300 nmol/LGeometric Coefficient of Variation 26.6
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 72320 nmol/LGeometric Coefficient of Variation 19.9
Primary

Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 1618 nmol/LGeometric Coefficient of Variation 45.2
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 7537 nmol/LGeometric Coefficient of Variation 56.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 1778 nmol/LGeometric Coefficient of Variation 29.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 7717 nmol/LGeometric Coefficient of Variation 47.2
Primary

Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

Maximum observed plasma drug concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)613 nmol/L
Primary

Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

Maximum observed plasma drug concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)293 nmol/LGeometric Coefficient of Variation 63
Primary

Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)

Maximum observed plasma drug concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)43.6 nmol/LGeometric Coefficient of Variation 60.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)122 nmol/LGeometric Coefficient of Variation 26.4
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)168 nmol/LGeometric Coefficient of Variation 11.4
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)510 nmol/L
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Cmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)667 nmol/LGeometric Coefficient of Variation 15.3
Primary

Cumulative Urine Excretion of Unchanged M6 in Healthy Participants (Group A)

Cumulative urine excretion of unchanged M6 in healthy participants was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cumulative Urine Excretion of Unchanged M6 in Healthy Participants (Group A)5.93 umolStandard Deviation 1.42
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cumulative Urine Excretion of Unchanged M6 in Healthy Participants (Group A)15.2 umolStandard Deviation 2.5
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cumulative Urine Excretion of Unchanged M6 in Healthy Participants (Group A)101 umolStandard Deviation 6.86
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cumulative Urine Excretion of Unchanged M6 in Healthy Participants (Group A)200 umolStandard Deviation 37.9
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Cumulative Urine Excretion of Unchanged M6 in Healthy Participants (Group A)31.8 umolStandard Deviation 5.69
Primary

Cumulative Urine Excretion of Unchanged Uprifosbuvir in Healthy Participants (Group A)

Cumulative urine excretion of unchanged MK-3682 in healthy participants was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Cumulative Urine Excretion of Unchanged Uprifosbuvir in Healthy Participants (Group A)0.280 umolStandard Deviation 0.08
Group A: Uprifosbuvir 10 mg (Cohort 1a)Cumulative Urine Excretion of Unchanged Uprifosbuvir in Healthy Participants (Group A)0.586 umolStandard Deviation 0.164
Group A: Uprifosbuvir 25 mg (Cohort 2a)Cumulative Urine Excretion of Unchanged Uprifosbuvir in Healthy Participants (Group A)7.73 umolStandard Deviation 4.67
Group A: Uprifosbuvir 50 mg (Cohort 3a)Cumulative Urine Excretion of Unchanged Uprifosbuvir in Healthy Participants (Group A)13.1 umolStandard Deviation 4.16
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Cumulative Urine Excretion of Unchanged Uprifosbuvir in Healthy Participants (Group A)1.56 umolStandard Deviation 0.397
Primary

Maximum (Peak) Observed Plasma Drug Concentration (Cmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

Maximum observed plasma drug concentration was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Maximum (Peak) Observed Plasma Drug Concentration (Cmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)29.6 nmol/LGeometric Coefficient of Variation 45.3
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum (Peak) Observed Plasma Drug Concentration (Cmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)47.7 nmol/LGeometric Coefficient of Variation 54.4
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum (Peak) Observed Plasma Drug Concentration (Cmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1120 nmol/LGeometric Coefficient of Variation 47.8
Group A: Uprifosbuvir 50 mg (Cohort 3a)Maximum (Peak) Observed Plasma Drug Concentration (Cmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1530 nmol/LGeometric Coefficient of Variation 53.6
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Maximum (Peak) Observed Plasma Drug Concentration (Cmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)119 nmol/LGeometric Coefficient of Variation 89.2
Primary

Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)

Reduction in HCV RNA from baseline on Day 8 following uprifosbuvir 50-450 mg for 7 Days in Genotype (Gt) 1, HCV-infected participants was obtained.

Time frame: Baseline and 28 days after last dose of study drug (Up to 42 days)

Population: Per-Protocol Population: participants who complied with the protocol sufficiently to ensure that these data were likely to exhibit the effects of treatment, according to the underlying scientific model.

ArmMeasureGroupValue (MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment: Gt1b1.36 log10 IU/mLStandard Deviation 0.774
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Baseline5.91 log10 IU/mLStandard Deviation 0.347
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1a0.96 log10 IU/mL
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1b1.35 log10 IU/mL
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1 (pooled 1a+1b)1.15 log10 IU/mLStandard Deviation 0.274
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment;Gt1 (pooled 1a+1b)1.36 log10 IU/mLStandard Deviation 0.774
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1b3.82 log10 IU/mLStandard Deviation 0.636
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment;Gt1 (pooled 1a+1b)3.15 log10 IU/mLStandard Deviation 0.42
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment: Gt1b3.59 log10 IU/mL
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1 (pooled 1a+1b)4.19 log10 IU/mLStandard Deviation 0.754
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Baseline6.16 log10 IU/mLStandard Deviation 0.633
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment: Gt1a2.92 log10 IU/mLStandard Deviation 0.239
Group A: Uprifosbuvir 10 mg (Cohort 1a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1a4.82 log10 IU/mLStandard Deviation 0.504
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1 (pooled 1a+1b)4.50 log10 IU/mLStandard Deviation 0.644
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1a5.06 log10 IU/mLStandard Deviation 0.489
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment: Gt1a3.60 log10 IU/mL
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment;Gt1 (pooled 1a+1b)3.16 log10 IU/mLStandard Deviation 0.989
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Normal hepatic fcn: Gt1b4.28 log10 IU/mLStandard Deviation 0.584
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Mild hepatic impairment: Gt1b3.08 log10 IU/mLStandard Deviation 1.06
Group A: Uprifosbuvir 25 mg (Cohort 2a)Maximum Reduction in log10 HCV RNA From Baseline - Normal Participants (From Groups B and C) vs. Mild Hepatic Impairment Participants (Group E)Baseline6.14 log10 IU/mLStandard Deviation 0.356
Primary

Observed Terminal Half-Life (t1/2) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Observed Terminal Half-Life (t1/2) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.839 hoursGeometric Coefficient of Variation 27.3
Group A: Uprifosbuvir 10 mg (Cohort 1a)Observed Terminal Half-Life (t1/2) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.872 hoursGeometric Coefficient of Variation 33.7
Group A: Uprifosbuvir 25 mg (Cohort 2a)Observed Terminal Half-Life (t1/2) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1.05 hoursGeometric Coefficient of Variation 25
Group A: Uprifosbuvir 50 mg (Cohort 3a)Observed Terminal Half-Life (t1/2) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1.13 hoursGeometric Coefficient of Variation 31.6
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Observed Terminal Half-Life (t1/2) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.979 hoursGeometric Coefficient of Variation 36.6
Primary

Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE

The percentage of participants who discontinued study drug due to an AE is presented.

Time frame: Up to 14 days

Population: Safety Population: all participants who received at least one dose of the study drug

ArmMeasureValue (NUMBER)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Discontinued Study Drug Due to a Treatment-emergent AE0.0 Percentage of Participants
Primary

Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)

An AE was defined as any untoward medical occurrence in a participant administered study drug, and that does not necessarily have a causal relationship with the study drug(s). An AE can be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of study drug(s), whether or not related to study drug(s). The percentage of participants who experienced at least one AE is presented.

Time frame: Up to 42 days

Population: Safety Population: all participants who received at least one dose of the study drug

ArmMeasureValue (NUMBER)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)50.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)0.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)33.3 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)33.3 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)66.7 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)50.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)33.3 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)50.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)33.3 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)66.7 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)33.3 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)66.7 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)66.7 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)72.7 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)70.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)87.5 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)44.4 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)62.5 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)75.0 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)62.5 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)66.7 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)0.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)100.0 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)62.5 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Adverse Event (AE)37.5 Percentage of Participants
Primary

Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory Abnormality

Laboratory abnormalities were graded using the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events. Treatment-emergent AEs (TEAEs)were graded as: Grade 1: Mild TEAE as Worst Severity; Grade 2: Moderate TEAE as Worst Severity; Grade 3: Severe TEAE as Worst Severity; Grade 4: Potentially Life-Threatening TEAE as Worst Severity; Grade 5: TEAE Leading to Death. The percentage of participants who experienced at least one Grade 1, 2, 3, 4 or 5 laboratory abnormality is presented.

Time frame: Up to 42 days

Population: Safety Population: all participants who received at least one dose of the study drug

ArmMeasureGroupValue (NUMBER)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 150.00 Percentage of Participants
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 10.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 116.7 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 216.7 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 116.7 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 216.7 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 150.0 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 216.7 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 133.3 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 216.7 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 133.3 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 150.0 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 10.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 333.3 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 166.7 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 133.3 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 166.7 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 233.3 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 166.7 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 39.1 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 145.5 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 218.2 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 310.0 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 160.0 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 137.5 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 250.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 133.3 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 25.6 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 35.6 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 10.0 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 262.5 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 237.5 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 137.5 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 225.0 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 125.0 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 412.5 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 133.3 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 233.3 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 10.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 20.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 1100.0 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 312.5 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 112.5 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 237.5 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 237.5 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 10.0 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 30.0 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 50.0 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Grade 1, 2, 3, 4 or 5 Laboratory AbnormalityGrade 40.0 Percentage of Participants
Primary

Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)

An SAE was defined as any untoward medical occurrence that at any dose that: resulted in death, was life threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, or was an important medical event. The percentage of participants who experienced at least one SAE is presented.

Time frame: Up to 42 days

Population: Safety Population: all participants who received at least one dose of the study drug

ArmMeasureValue (NUMBER)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced at Least One Treatment-emergent Serious AE (SAE)0.0 Percentage of Participants
Primary

Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)

A DLT was defined as any of the following events: Any SAE considered by the investigator to be at least reasonably or possibly related to study drug; Any Grade 3 clinical AE considered by the investigator to be at least reasonably or possibly related to study drug; Any Grade 3 confirmed laboratory abnormalities considered by the investigator to be at least reasonably or possibly related to study drug, except for asymptomatic Grade ¾ cholesterol and triglyceride; Any clinical or laboratory AE of any intensity that is considered by the investigator to be at least reasonably or possibly related to study drug that necessitates permanent discontinuation of study drug; Confirmed increase in QT interval corrected for heart rate using Fridericia's (QTcF) formula ≥60 msec over Baseline or an absolute QTcF ≥500 msec.

Time frame: Up to 13 days

Population: Safety Population: all participants who received at least one dose of the study drug

ArmMeasureValue (NUMBER)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group A: Uprifosbuvir 10 mg (Cohort 1a)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group A: Uprifosbuvir 25 mg (Cohort 2a)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group A: Uprifosbuvir 50 mg (Cohort 3a)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 5a)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group A: Uprifosbuvir 300 mg (Cohort 6a)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group A: Placebo (Cohort 6a)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group B: Uprifosbuvir 10 mg (Cohort 1b)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group B: Uprifosbuvir 25 mg (Cohort 2b)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group B: Uprifosbuvir 50 mg (Cohort 3b)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group B: Uprifosbuvir 150 mg (Cohort 4b)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group B: Uprifosbuvir 300 mg (Cohort 5b)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 50 mg (Capsule)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 150 mg (Capsule)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 250 mg (Capsule)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Capsule)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 400 mg (Capsule)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Uprifosbuvir 450 mg (Tablet)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Groups C & D: Placebo (Pooled)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group E: Uprifosbuvir 150 mg (Cohort 1e)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group E: Uprifosbuvir 300 mg (Cohort 2e)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group E: Uprifosbuvir 450 mg (Cohort 3e)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Group F: Uprifosbuvir 300 mg (Tablet)Percentage of Participants Who Experienced a Treatment-emergent Dose-limiting Toxicity (DLT)0.0 Percentage of Participants
Primary

Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)

Reduction in HCV RNA from baseline on Day 8 following uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-infected participants was obtained.

Time frame: Baseline and Day 8

Population: Per-Protocol Population: participants who complied with the protocol sufficiently to ensure that these data were likely to exhibit the effects of treatment, according to the underlying scientific model.

ArmMeasureGroupValue (MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline5.82 log10 IU/mLStandard Deviation 0.879
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 80.78 log10 IU/mLStandard Deviation 0.44
Group A: Uprifosbuvir 10 mg (Cohort 1a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 82.49 log10 IU/mLStandard Deviation 0.733
Group A: Uprifosbuvir 10 mg (Cohort 1a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline6.00 log10 IU/mLStandard Deviation 0.63
Group A: Uprifosbuvir 25 mg (Cohort 2a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline6.16 log10 IU/mLStandard Deviation 0.633
Group A: Uprifosbuvir 25 mg (Cohort 2a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 84.22 log10 IU/mLStandard Deviation 0.614
Group A: Uprifosbuvir 50 mg (Cohort 3a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 84.39 log10 IU/mLStandard Deviation 0.433
Group A: Uprifosbuvir 50 mg (Cohort 3a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline6.11 log10 IU/mLStandard Deviation 0.54
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 80.42 log10 IU/mLStandard Deviation 0.229
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline6.27 log10 IU/mLStandard Deviation 0.485
Group A: Uprifosbuvir 300 mg (Cohort 5a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline5.92 log10 IU/mLStandard Deviation 0.838
Group A: Uprifosbuvir 300 mg (Cohort 5a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 83.34 log10 IU/mLStandard Deviation 0.643
Group A: Uprifosbuvir 300 mg (Cohort 6a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 84.50 log10 IU/mLStandard Deviation 0.644
Group A: Uprifosbuvir 300 mg (Cohort 6a)Reduction in HCV RNA From Baseline on Day 8 Following Uprifosbuvir 50-450 mg for 7 Days in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Baseline5.97 log10 IU/mLStandard Deviation 0.739
Primary

t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)27.5 hoursGeometric Coefficient of Variation 9.3
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)26.2 hoursGeometric Coefficient of Variation 24.8
Primary

t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)25.5 hoursGeometric Coefficient of Variation 16.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)28.9 hoursGeometric Coefficient of Variation 15.2
Group A: Uprifosbuvir 25 mg (Cohort 2a)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)32.6 hoursGeometric Coefficient of Variation 12.7
Group A: Uprifosbuvir 50 mg (Cohort 3a)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)35.8 hoursGeometric Coefficient of Variation 17.8
Primary

t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)32.2 hoursGeometric Coefficient of Variation 10.3
Primary

t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)32.4 hoursGeometric Coefficient of Variation 7.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)30.8 hoursGeometric Coefficient of Variation 26.8
Primary

t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)38.9 hoursGeometric Coefficient of Variation 17.7
Primary

t1/2 of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)24.0 hours
Primary

t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)27.1 hoursGeometric Coefficient of Variation 9.1
Primary

t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)20.1 hoursGeometric Coefficient of Variation 3.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)21.2 hoursGeometric Coefficient of Variation 4.8
Group A: Uprifosbuvir 25 mg (Cohort 2a)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)21.7 hoursGeometric Coefficient of Variation 19.8
Group A: Uprifosbuvir 50 mg (Cohort 3a)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)26.9 hours
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)28.0 hoursGeometric Coefficient of Variation 12.1
Primary

t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)22.5 hoursGeometric Coefficient of Variation 6.2
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)24.6 hoursGeometric Coefficient of Variation 12.8
Group A: Uprifosbuvir 25 mg (Cohort 2a)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)29.1 hoursGeometric Coefficient of Variation 15.5
Group A: Uprifosbuvir 50 mg (Cohort 3a)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)28.8 hoursGeometric Coefficient of Variation 14.2
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)t1/2 of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)22.9 hoursGeometric Coefficient of Variation 14
Primary

t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)1.18 hoursGeometric Coefficient of Variation 27.2
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)2.38 hoursGeometric Coefficient of Variation 34.3
Primary

t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)1.04 hoursGeometric Coefficient of Variation 25.1
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)1.11 hoursGeometric Coefficient of Variation 22.5
Group A: Uprifosbuvir 25 mg (Cohort 2a)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)154. hoursGeometric Coefficient of Variation 34
Group A: Uprifosbuvir 50 mg (Cohort 3a)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)2.58 hoursGeometric Coefficient of Variation 40.3
Primary

t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)2.50 hoursGeometric Coefficient of Variation 55.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)3.64 hoursGeometric Coefficient of Variation 54.8
Primary

t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants, With Itraconazole (Group F)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants, With Itraconazole (Group F)4.30 hoursGeometric Coefficient of Variation 52.8
Primary

t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)1.16 hours
Primary

t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)1.63 hoursGeometric Coefficient of Variation 31.9
Primary

t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)

The time measured for the plasma concentration to decrease by one half (t1/2) was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)1.36 hoursGeometric Coefficient of Variation 52.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)0.926 hoursGeometric Coefficient of Variation 34.5
Group A: Uprifosbuvir 25 mg (Cohort 2a)t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)1.09 hoursGeometric Coefficient of Variation 32.5
Group A: Uprifosbuvir 50 mg (Cohort 3a)t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)1.11 hours
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)t1/2 of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)1.59 hoursGeometric Coefficient of Variation 1.7
Primary

Time to Maximum Plasma Concentration (Tmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

Time to maximum plasma concentration was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Time to Maximum Plasma Concentration (Tmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.80 hoursFull Range 32.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Time to Maximum Plasma Concentration (Tmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1.00 hoursFull Range 27.9
Group A: Uprifosbuvir 25 mg (Cohort 2a)Time to Maximum Plasma Concentration (Tmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.76 hoursFull Range 62.7
Group A: Uprifosbuvir 50 mg (Cohort 3a)Time to Maximum Plasma Concentration (Tmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)0.50 hoursFull Range 37.7
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Time to Maximum Plasma Concentration (Tmax) of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)1.00 hoursFull Range 63.2
Primary

Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1,HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1,HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 13.00 hoursFull Range 32.8
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1,HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 72.00 hoursFull Range 31.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1,HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 14.00 hoursFull Range 35.2
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1,HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 74.00 hoursFull Range 23.2
Primary

Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 14.00 hoursFull Range 51.4
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 72.00 hoursFull Range 36.2
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 72.00 hoursFull Range 36.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 13.00 hoursFull Range 52.9
Group A: Uprifosbuvir 25 mg (Cohort 2a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 13.00 hoursFull Range 45.4
Group A: Uprifosbuvir 25 mg (Cohort 2a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 73.00 hoursFull Range 46.8
Group A: Uprifosbuvir 50 mg (Cohort 3a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 14.00 hoursFull Range 40.1
Group A: Uprifosbuvir 50 mg (Cohort 3a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-Infected Participants (Groups C and D)Day 74.00 hoursFull Range 22.1
Primary

Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 13.00 hoursFull Range 3.77
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 72.50 hoursFull Range 21.7
Primary

Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 14.00 hoursFull Range 51.7
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 74.00 hoursFull Range 43.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 74.00 hoursFull Range 30.4
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants (Group C)Day 14.00 hoursFull Range 45
Primary

Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 110.00 hoursFull Range 44
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-Infected Participants, With Itraconazole (Group F)Day 74.00 hoursFull Range 46.1
Primary

Tmax of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

Time to maximum plasma concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Single Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-Infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)4.00 hours
Primary

Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

Time to maximum plasma concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)6.00 hoursFull Range 48.5
Primary

Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)

Time to maximum plasma concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)4.00 hoursFull Range 39.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)4.00 hoursFull Range 49.1
Group A: Uprifosbuvir 25 mg (Cohort 2a)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)2.05 hoursFull Range 20.4
Group A: Uprifosbuvir 50 mg (Cohort 3a)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)3.52 hours
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-Infected Participants (Group B)4.00 hoursFull Range 35.4
Primary

Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)

Time to maximum plasma concentration was obtained. All participants were fasted.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)3.01 hoursFull Range 32.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)3.50 hoursFull Range 27.9
Group A: Uprifosbuvir 25 mg (Cohort 2a)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)2.53 hoursFull Range 62.7
Group A: Uprifosbuvir 50 mg (Cohort 3a)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)3.50 hoursFull Range 37.7
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Tmax of M6 After Single Dose of Uprifosbuvir as the Capsule Formulation in Healthy Participants (Group A)4.00 hoursFull Range 63.2
Primary

Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)

AUC0-t was calculated using linear log trapezoidal summation from time zero to last measurable concentration.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 11.00 hoursFull Range 32.8
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 71.00 hoursFull Range 31.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 11.00 hoursFull Range 35.2
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as Capsule or Tablet Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 2e and Cohort 3e)Day 71.00 hoursFull Range 23.2
Primary

Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 10.85 hoursFull Range 51.4
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 70.97 hoursFull Range 36.2
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 70.50 hoursFull Range 36.7
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 10.50 hoursFull Range 52.9
Group A: Uprifosbuvir 25 mg (Cohort 2a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 70.50 hoursFull Range 46.8
Group A: Uprifosbuvir 25 mg (Cohort 2a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 11.00 hoursFull Range 45.4
Group A: Uprifosbuvir 50 mg (Cohort 3a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 10.50 hoursFull Range 40.1
Group A: Uprifosbuvir 50 mg (Cohort 3a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Genotype 1, 2 and 3, HCV-infected Participants (Groups C and D)Day 70.50 hoursFull Range 22.1
Primary

Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)

Maximum observed plasma drug concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 10.75 hoursFull Range 26.6
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Capsule Formulation in Healthy Participants (Group A - Cohort 6a)Day 70.50 hoursFull Range 19.9
Primary

Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)Day 11.00 hoursFull Range 51.7
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)Day 70.50 hoursFull Range 43.9
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)Day 12.00 hoursFull Range 45
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants (Group C)Day 70.50 hoursFull Range 30.4
Primary

Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants, With Itraconazole (Group F)

Time to maximum plasma concentration was obtained.

Time frame: Days 1 & 7: predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureGroupValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants, With Itraconazole (Group F)Day 12.00 hoursFull Range 44
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Multiple Doses of Uprifosbuvir Once-Daily x 7 Days as the Tablet Formulation in Genotype 1, HCV-infected Participants, With Itraconazole (Group F)Day 71.00 hoursFull Range 46.1
Primary

Tmax of Uprifosbuvir After Singe Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)

Time to maximum plasma concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Singe Dose of Uprifosbuvir as Capsule Formulation in Genotype 1, HCV-infected Participants With Mildly Impaired Hepatic Function (Child Pugh Class A) (Group E - Cohort 1e)0.75 hours
Primary

Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)

Time to maximum plasma concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Fed State in Healthy Participants (Group A - Cohort 4a)3.04 hoursFull Range 47.8
Primary

Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)

Time to maximum plasma concentration was obtained.

Time frame: Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 20, 24, 36, 48, 72, 96, and 120 hours postdose

Population: PK Population: a subpopulation of the per-protocol population, selecting all participants exposed to uprifosbuvir who had available and evaluable data (e.g., excluding deviations and/or other events that could have an impact on the PK analysis).

ArmMeasureValue (MEDIAN)Dispersion
Group A: Placebo (Cohort 1a-Cohort 5a - Pooled)Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)0.50 hoursFull Range 39.8
Group A: Uprifosbuvir 10 mg (Cohort 1a)Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)1.00 hoursFull Range 49.1
Group A: Uprifosbuvir 25 mg (Cohort 2a)Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)1.00 hoursFull Range 20.4
Group A: Uprifosbuvir 50 mg (Cohort 3a)Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)0.76 hours
Group A: Uprifosbuvir 150 mg (Cohort 4a) (Fasted and Fed)Tmax of Uprifosbuvir After Single Dose of Uprifosbuvir as the Capsule Formulation in Genotype 1, HCV-infected Participants (Group B)1.00 hoursFull Range 35.4

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026