Pharmacokinetics, Safety, and Tolerability of Methylnaltrexone in Volunteers With Impaired Hepatic Function

November 26, 2019 updated by: Bausch Health Americas, Inc.

A Phase 1, Open-Label, Study to Evaluate Single Dose Pharmacokinetics, Safety, and Tolerability of Methylnaltrexone (MNTX) in Volunteers With Impaired Hepatic Function

This is a multicenter, non-randomized, single-dose, parallel-group study. Each subject will receive a subcutaneous dose of MNTX. Eight subjects with normal hepatic function and eight subjects from each classification of hepatic impairment will be enrolled. Plasma samples will be collected before and at specified intervals after dosing and the concentration of MNTX will be analyzed.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

24

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New York
      • Tarrytown, New York, United States, 10591
        • Progenics Pharmaceuticals, Inc.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Males and females between the ages of 18-80 years
  2. Body weight greater than 100 lbs and BMI between 18-38
  3. Liver values that are abnormal must not be clinically relevant as judged by the investigator. Liver enzyme and bilirubin must be less than 5 times the upper normal of reference range and may be repeated under fed conditions if abnormal. Stable hepatitis patients as well as cirrhosis patients of either etiology.

Exclusion Criteria:

  1. History of current alcohol abuse with less than 1 year abstinence
  2. Conditions possibly affecting drug absorption, e.g. gastrectomy or clinically significant diabetic gastroenteropathy.
  3. Currently pregnant or nursing
  4. Methadone use.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Arm 1
Drug: SC Methylnaltrexone (MNTX)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Plasma Concentration of SC MNTX
Time Frame: 20 days
To evaluate the pharmacokinetics of MNTX administered subcutaneously as a single dose in individuals with impaired liver and hepatic function compared to healthy controls.
20 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time of Maximum Plasma Concentration of SC MNTX
Time Frame: 20 days
To evaluate the pharmacokinetics of MNTX administered subcutaneously as a single dose in individuals with impaired liver and hepatic function compared to healthy controls.
20 days
Area Under the Plasma Concentration versus Time Curve (AUC) of SC MNTX
Time Frame: 20 days
To evaluate the pharmacokinetics of MNTX administered subcutaneously as a single dose in individuals with impaired liver and hepatic function compared to healthy controls.
20 days
Percentage of SC MNTX Excreted in Urine
Time Frame: 20 days
To evaluate the pharmacokinetics of MNTX administered subcutaneously as a single dose in individuals with impaired liver and hepatic function compared to healthy controls.
20 days
Urinary Clearance of SC MNTX
Time Frame: 20 days
To evaluate the pharmacokinetics of MNTX administered subcutaneously as a single dose in individuals with impaired liver and hepatic function compared to healthy controls.
20 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Bausch Health Americas, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2004

Primary Completion (Actual)

July 1, 2004

Study Completion (Actual)

July 1, 2004

Study Registration Dates

First Submitted

May 27, 2011

First Submitted That Met QC Criteria

June 6, 2011

First Posted (Estimate)

June 7, 2011

Study Record Updates

Last Update Posted (Actual)

November 27, 2019

Last Update Submitted That Met QC Criteria

November 26, 2019

Last Verified

November 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MNTX 1107

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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