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Study of Nalbuphine ER in Participants With Hepatic Impairment

A Phase 1, Open-Label, Non-Randomized, Parallel-Group, Multiple-Escalating-Dose Pharmacokinetic Study of Nalbuphine Extended-Release Oral Tablets in Subjects With Impaired Hepatic Function Compared to Healthy Subjects and Exploratory Effect on Itch

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04020016
Enrollment
28
Registered
2019-07-15
Start date
2019-06-12
Completion date
2020-02-05
Last updated
2026-03-19

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

Conditions

Hepatic Impairment

Keywords

nalbuphine, Pharmacokinetic, hepatic impairment

Brief summary

This research study will evaluate the effect of hepatic impairment on the pharmacokinetics (the breakdown of the drug in the body) of parallel-group, multiple oral doses nalbuphine extended release (NAL ER), tablets in people with hepatic impairment (mild, moderate and severe), compared to people with normal liver function. The study will also test the safety and tolerability of the NAL ER, when it is given to participants with mild, moderate and severe hepatic impairment, compared to participants with normal liver function. This protocol will also study the effects of this drug on itching in hepatic impairment participants if they report some itching prior to taking part in this study.

Interventions

Oral tablet

Sponsors

Trevi Therapeutics
Lead SponsorINDUSTRY
Syneos Health
CollaboratorOTHER

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
Yes

Inclusion criteria

For participants with Hepatic Impairment (Cohort 1 to 4 and Cohort 6): * Male or female with stable hepatic impairment, non-smoker and/or light smoker. * Clinical diagnosis of liver cirrhosis * Stable for study participation based upon medical history, physical examination, vital signs, ECGs, and screening clinical laboratory evaluations For Healthy participants (Cohort 5): * Male or female, non-smoker and/or light smoker (up to 5 cigarettes or equivalent/day) * Healthy as defined by: * Normal hepatic function * The absence of clinically significant illness and surgery within 4 weeks prior to dosing.

Exclusion criteria

For participants with Hepatic Impairment (Cohort 1 to 4 and Cohort 6): * Clinically significant unstable medical conditions * Clinically significant abnormalities of laboratory, ECG, pulse oximetry, or clinical data that would preclude participation in the study. * History of any illness that might confound the results of the study or pose an additional risk to the participant by participation in the study. For Healthy participants (Cohort 5): * Diagnosis of liver disease * History of heart problems. * History of significant alcohol abuse or drug abuse

Design outcomes

Primary

MeasureTime frameDescription
Part 1: Maximum Observed Plasma Concentration (Cmax) of NAL ERPre-dose and 1.5, 3, 5, 7, 9, 12, 24, 36, 48, and 72 hours post-dose at Day 1 in each dose level
Part 1: Time to Reach Maximum Observed Plasma Concentration (Tmax) of NAL ERPre-dose and 1.5, 3, 5, 7, 9, 12, 24, 36, 48, and 72 hours post-dose at Day 1 in each dose level
Part 1: Terminal Elimination Half-Life (T1/2 el) of NAL ERPre-dose and 1.5, 3, 5, 7, 9, 12, 24, 36, 48, and 72 hours post-dose at Day 1 in each dose level
Part 1: Area Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUC0-inf) of NAL ERPre-dose and 1.5, 3, 5, 7, 9, 12, 24, 36, 48, and 72 hours post-dose at Day 1 in each dose level
Part 1: Area Under the Plasma Concentration-Time Curve From Time Zero to Last Measurable Concentration (AUC0-t) of NAL ERPre-dose and 1.5, 3, 5, 7, 9, 12, 24, 36, 48, and 72 hours post-dose at Day 1 in each dose level
Part 1: Number of Participants Who Experienced at Least One Treatment Emergent Adverse Event (TEAE)From signing the informed consent form up to Day 4An AE was defined as any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. A TEAE was defined as any AE that occurs after the first dose of study drug. TEAEs included both serious and non-serious TEAEs.
Part 1: Number of Participants With Clinically Significant Abnormalities in Laboratory ParametersFrom signing the informed consent form up to Day 4The clinical laboratory parameters included the clinical chemistry, hematology, coagulation, and urinalysis. Clinical significance was determined by the investigator.
Part 1: Number of Participants With Clinically Significant Findings in Vital Sign ParametersFrom signing the informed consent form up to Day 4Vital signs measurements included diastolic and systolic blood pressure, heart rate, respiratory rate, and body temperature. Clinical significance was determined by the investigator.
Part 1: Number of Participants With Clinically Significant Findings in Physical Examination ParametersFrom signing the informed consent form up to Day 4Physical examination included examination of at least the following components: head, eyes, ears, nose, throat (HEENT), neck, lungs, abdomen, skin, cardiovascular and musculoskeletal evaluation, and general neurological examination. Clinical significance was determined by the investigator.
Part 1: Number of Participants With Clinically Significant Abnormalities in 12-Lead Electrocardiogram (ECG)From signing the informed consent form up to Day 4ECG data included the measurement of heart rate and aggregate PR interval, QRS duration, QT interval, QTcB interval, and QTcF interval.
Part 1: Number of Participants With Clinically Significant Findings in Pulse OximetryPre-dose and 1.5, 4, 5, and 8 hours post-dose in each dose levelOxygen saturation was measured via pulse oximetry. Pulse oximetry measurements were to be collected within 10 min before or after the specified time point. Clinical significance was determined by the investigator.

Secondary

MeasureTime frameDescription
Part 2: Change From Baseline in Worst Itch Numerical Rating Scale (WI-NRS)Baseline, Day 16WI-NRS measure was used determine the severity of itch experienced by participants with hepatic impairment (for Cohort 6 only) at screening. Participants were to complete the two forms (the "Night-time Itch" and the "Daytime Itch") at the same time during the screening visit and the average was taken to determine the baseline severity. The scale was a 0 to 10 rating scale with 10 being the most severe itch experienced and 0 being no itching experienced. Higher score indicated greater severity of itching.

Countries

United States

Contacts

STUDY_DIRECTORChief Development Officer

Trevi Therapeutics, Inc.

Participant flow

Recruitment details

Participants were enrolled at 3 sites in the United States from 12 June 2019 to 05 February 2020.

Pre-assignment details

A total of 66 participants were screened and 28 participants were enrolled. The study was planned to be conducted in 2 parts: Part 1 (Single Ascending Dose \[SAD\]) followed by Part 2 (Multiple Ascending Dose \[MAD\]). As per the judgement of the safety committee, Part 2 was not conducted based on protocol defined criteria. In Part 1, each cohort was dosed sequentially from lowest dose for mild and moderate impaired participants. Participants in Cohort 1 could also take part in Cohorts 2, 3, and 4.

Baseline characteristics

Characteristic
Age, Continuous
Cohort 1 (NAL ER 27 mg): Group 1
59.2 years
STANDARD_DEVIATION 5.6
Age, Continuous
Cohort 1 (NAL ER 27 mg): Group 2
62.5 years
STANDARD_DEVIATION 5.1
Age, Continuous
Cohort 1 (NAL ER 27 mg): Group 3
60.3 years
STANDARD_DEVIATION 9
Age, Continuous
Cohort 2 (NAL ER 54 mg): Group 1
59.5 years
STANDARD_DEVIATION 4.9
Age, Continuous
Cohort 2 (NAL ER 54 mg): Group 2
61.3 years
STANDARD_DEVIATION 5.6
Age, Continuous
Cohort 3 (NAL ER 108 mg): Group 1
59.5 years
STANDARD_DEVIATION 4.9
Age, Continuous
Cohort 3 (NAL ER 108 mg): Group 2
60.3 years
STANDARD_DEVIATION 6.1
Age, Continuous
Cohort 4 (NAL ER 162 mg): Group 1
59.3 years
STANDARD_DEVIATION 5.3
Age, Continuous
Cohort 4 (NAL ER 162 mg): Group 2
58.8 years
STANDARD_DEVIATION 5.2
Age, Continuous
Cohort 5 (NAL ER 162 mg): Group 4
55.9 years
STANDARD_DEVIATION 5.7
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
Not Hispanic or Latino
6 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
Not Hispanic or Latino
6 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
Not Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
Not Hispanic or Latino
7 Participants
Ethnicity (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
Not Hispanic or Latino
6 Participants
Ethnicity (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
Hispanic or Latino
4 Participants
Ethnicity (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
Not Hispanic or Latino
4 Participants
Ethnicity (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
Not Hispanic or Latino
7 Participants
Ethnicity (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
Not Hispanic or Latino
4 Participants
Ethnicity (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
Not Hispanic or Latino
6 Participants
Ethnicity (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
Unknown or Not Reported
0 Participants
Ethnicity (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
Not Hispanic or Latino
5 Participants
Ethnicity (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
Asian
1 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
Black or African American
3 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
More than one race
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 1
White
2 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
Asian
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
Black or African American
2 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
More than one race
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 2
White
4 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
Asian
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
Black or African American
1 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
More than one race
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 1 (NAL ER 27 mg): Group 3
White
3 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
Asian
1 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
Black or African American
3 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
More than one race
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 1
White
4 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
Asian
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
Black or African American
2 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
More than one race
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 2 (NAL ER 54 mg): Group 2
White
5 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
Asian
1 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
Black or African American
3 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
More than one race
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 1
White
4 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
Asian
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
Black or African American
1 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
More than one race
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 3 (NAL ER 108 mg): Group 2
White
6 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
Asian
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
Black or African American
3 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
More than one race
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 1
White
4 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
Asian
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
Black or African American
1 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
More than one race
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 4 (NAL ER 162 mg): Group 2
White
5 Participants
Race (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
Asian
0 Participants
Race (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
Black or African American
2 Participants
Race (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
More than one race
0 Participants
Race (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Cohort 5 (NAL ER 162 mg): Group 4
White
6 Participants
Sex: Female, Male
Cohort 1 (NAL ER 27 mg): Group 1
Female
3 Participants
Sex: Female, Male
Cohort 1 (NAL ER 27 mg): Group 1
Male
3 Participants
Sex: Female, Male
Cohort 1 (NAL ER 27 mg): Group 2
Female
1 Participants
Sex: Female, Male
Cohort 1 (NAL ER 27 mg): Group 2
Male
5 Participants
Sex: Female, Male
Cohort 1 (NAL ER 27 mg): Group 3
Female
2 Participants
Sex: Female, Male
Cohort 1 (NAL ER 27 mg): Group 3
Male
2 Participants
Sex: Female, Male
Cohort 2 (NAL ER 54 mg): Group 1
Female
4 Participants
Sex: Female, Male
Cohort 2 (NAL ER 54 mg): Group 1
Male
4 Participants
Sex: Female, Male
Cohort 2 (NAL ER 54 mg): Group 2
Female
1 Participants
Sex: Female, Male
Cohort 2 (NAL ER 54 mg): Group 2
Male
6 Participants
Sex: Female, Male
Cohort 3 (NAL ER 108 mg): Group 1
Female
4 Participants
Sex: Female, Male
Cohort 3 (NAL ER 108 mg): Group 1
Male
4 Participants
Sex: Female, Male
Cohort 3 (NAL ER 108 mg): Group 2
Female
0 Participants
Sex: Female, Male
Cohort 3 (NAL ER 108 mg): Group 2
Male
7 Participants
Sex: Female, Male
Cohort 4 (NAL ER 162 mg): Group 1
Female
3 Participants
Sex: Female, Male
Cohort 4 (NAL ER 162 mg): Group 1
Male
4 Participants
Sex: Female, Male
Cohort 4 (NAL ER 162 mg): Group 2
Female
0 Participants
Sex: Female, Male
Cohort 4 (NAL ER 162 mg): Group 2
Male
6 Participants
Sex: Female, Male
Cohort 5 (NAL ER 162 mg): Group 4
Female
3 Participants
Sex: Female, Male
Cohort 5 (NAL ER 162 mg): Group 4
Male
5 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 160 / 150 / 150 / 130 / 8
other
Total, other adverse events
3 / 165 / 159 / 1512 / 135 / 8
serious
Total, serious adverse events
0 / 160 / 150 / 150 / 130 / 8

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 20, 2026