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A Study to Evaluate Molnupiravir (MK-4482) in Participants With Moderate Hepatic Impairment (MK-4482-016)

An Open-Label, Single-Dose Clinical Study to Evaluate the Pharmacokinetics of Molnupiravir (MK-4482) in Participants With Moderate Hepatic Impairment

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05386589
Enrollment
14
Registered
2022-05-23
Start date
2022-06-14
Completion date
2023-01-05
Last updated
2025-01-28

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

Conditions

Hepatic Impairment

Brief summary

The purpose of this study is to evaluate the pharmacokinetics (PK) of N-hydroxycytidine (NHC) following a single oral dose of molnupiravir in participants 18 to 75 years (inclusive) with moderate hepatic impairment and healthy matched controls.

Interventions

Four 200 mg capsules administered orally as a single dose

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

The key inclusion and

Exclusion criteria

include but are not limited to the following: Inclusion Criteria: * Has a BMI ≥18.5 and ≤35 kg/m2 * Diagnosis of chronic (\>6 months) stable Hepatic Impairment (HI) with features of cirrhosis due to any etiology (Moderate HI arm only) * Has a score on the Child-Pugh scale ranging from 7 to 9 (Moderate HI arm only) * In good health (except for Moderate HI)

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUC0-∞) of Plasma N-Hydroxycitidine (NHC)Day 1: Predose and 0.5, 1.5, 2, 4, 6, 8, 12, 24, 48, and 72 hours postdoseThe plasma AUC0-∞ of NHC is reported.
Maximum Plasma Concentration (Cmax) of NHCDay 1: Predose and 0.5, 1.5, 2, 4, 6, 8, 12, 24, 48, and 72 hours postdoseThe plasma Cmax of NHC is reported.

Secondary

MeasureTime frameDescription
Number of Participants Experiencing ≥1 Adverse Event (AE)Up to ~ 14 daysAn AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.

Countries

United States

Participant flow

Pre-assignment details

This study was conducted at 3 sites in the United States.

Participants by arm

ArmCount
Moderate Hepatic Impairment
Participants with moderate hepatic impairment will receive a single oral 800mg dose of molnupiravir.
7
Healthy-Matched Control Group
Healthy matched participants will receive a single oral 800mg dose of molnupiravir.
7
Total14

Baseline characteristics

CharacteristicHealthy-Matched Control GroupTotalModerate Hepatic Impairment
Age, Continuous54.6 years
STANDARD_DEVIATION 2.9
54.3 years
STANDARD_DEVIATION 7.2
54.0 years
STANDARD_DEVIATION 10.2
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants10 Participants6 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants4 Participants1 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Black or African American
2 Participants2 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
5 Participants11 Participants6 Participants
Sex: Female, Male
Female
3 Participants6 Participants3 Participants
Sex: Female, Male
Male
4 Participants8 Participants4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 70 / 7
other
Total, other adverse events
0 / 71 / 7
serious
Total, serious adverse events
0 / 70 / 7

Outcome results

Primary

Area Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUC0-∞) of Plasma N-Hydroxycitidine (NHC)

The plasma AUC0-∞ of NHC is reported.

Time frame: Day 1: Predose and 0.5, 1.5, 2, 4, 6, 8, 12, 24, 48, and 72 hours postdose

Population: All participants are included.

ArmMeasureValue (GEOMETRIC_MEAN)
Moderate Hepatic ImpairmentArea Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUC0-∞) of Plasma N-Hydroxycitidine (NHC)8930 hr*ng/mL
Healthy-Matched Control GroupArea Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUC0-∞) of Plasma N-Hydroxycitidine (NHC)10900 hr*ng/mL
Primary

Maximum Plasma Concentration (Cmax) of NHC

The plasma Cmax of NHC is reported.

Time frame: Day 1: Predose and 0.5, 1.5, 2, 4, 6, 8, 12, 24, 48, and 72 hours postdose

Population: All participants are included.

ArmMeasureValue (GEOMETRIC_MEAN)
Moderate Hepatic ImpairmentMaximum Plasma Concentration (Cmax) of NHC3660 ng/mL
Healthy-Matched Control GroupMaximum Plasma Concentration (Cmax) of NHC3790 ng/mL
Secondary

Number of Participants Experiencing ≥1 Adverse Event (AE)

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.

Time frame: Up to ~ 14 days

Population: All participants are included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Moderate Hepatic ImpairmentNumber of Participants Experiencing ≥1 Adverse Event (AE)0 Participants
Healthy-Matched Control GroupNumber of Participants Experiencing ≥1 Adverse Event (AE)1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026