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Opioid-induced ConstipationPhase 2NCT00640146

Study of Subcutaneous Methylnaltrexone (MNTX) in the Treatment of Opioid-Induced Constipation During Rehabilitation After Orthopedic Procedures

A Phase 2 study testing Methylnaltrexone bromide in people with Opioid-induced Constipation, run by Bausch Health Americas, Inc. at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to examine the safety and activity of MNTX in relieving opioid-induced constipation following orthopedic procedures. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Opioid-induced Constipation
What is being tested?
Methylnaltrexone bromide
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
37 participants
Where
1 siteUnited States
Study dates
19 Oct 2007to 21 Jan 2009
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male and female participants greater than or equal to (>=) 18 years of age.
  • Participants must have undergone an orthopedic procedure (that is, total knee or hip replacement, spinal fusion, or reduction of fracture(s) with or without surgical fixation post trauma).
  • Participants must be receiving opioid analgesics (a mu agonist only-not to include agents with mixed mechanisms of action such as tramadol or buprenorphine) after the procedures and be expected to require daily opioid analgesics for at least 7 days post randomization.
  • Participants must be acutely constipated following their orthopedic procedure.
  • Participants must receive all doses of study drug in either hospitals or rehabilitation facilities.
  • Participants must sign an informed consent form.
  • Females of childbearing potential must have a negative pregnancy test and use appropriate birth control throughout the study.
  • Body weight within range of 40 kilograms (kg) - 150 kg (88 - 330 pounds [lbs]).

Who cannot join

  • Participants with known hypersensitivity to methylnaltrexone, naltrexone, or naloxone.
  • Participants who received any investigational new drug (experimental) in the previous 30 days.
  • Participants who have received a laxative (for example, lactulose) or an enema within 48 hours prior to the first dose.
  • Participants with constipation not attributed to post procedure opioids.
  • Participants with a history of alcohol or prescription or non-prescription drug abuse within the past 2 years.
  • Female participants who are pregnant or lactating.
  • Participants with a known history of chronic active hepatitis B or hepatitis C virus or human immunodeficiency virus (HIV) infection.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Progenics Pharmaceuticals, Inc

    Tarrytown, New York, 10591

Other trials in United States

About this study

Official title: A Multicenter, Double-Blind, Randomized, Parallel-Group, Placebo Controlled Phase 2 Study of Once-Daily Subcutaneous Methylnaltrexone (MNTX) in the Treatment of Opioid-Induced Constipation During Rehabilitation After Orthopedic Procedures

The purpose of this study is to examine the safety and activity of MNTX in relieving opioid-induced constipation following orthopedic procedures.

Read the detailed description

This is a double-blind, randomized, parallel-group, placebo- controlled Phase 2 study to evaluate the safety and activity of subcutaneous (SC) MNTX versus SC placebo in participants who have undergone orthopedic procedures and who are expected to require opioids for 1 week after randomization. Participants will sign an informed consent form and be screened between Days 4-10 after their orthopedic procedure. Those participants who meet all eligibility requirements will be enrolled in the study. Treatment with study medication will be continued until either the participant no longer requires opioid medication for pain relief or the maximum number of doses is reached. Originally, participants were receiving treatment for up to 7 days. Then after Protocol Amendment 1 (12 March 2008), the duration of treatment changed from "up to 7 days" to "up to 4 days".

Being tested
Methylnaltrexone bromide, Placebo
Medical subject headings
Opioid-Induced Constipation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Methylnaltrexone bromideDrug

    Methylnaltrexone will be administered as per the dose and schedule specified in the respective arm.

  • PlaceboDrug

    Placebo matching to methylnaltrexone will be administered as per the dose and schedule specified in the respective arm.

Study groups in NCT00640146
Study groupRoleWhat they receive
MNTXExperimentalParticipants will receive methylnaltrexone (MNTX) 12 milligrams (mg) subcutaneously (SC) once daily for up to 4 or 7 days, depending upon the protocol version under which each participant is enrolled.
Receives: Drug: Methylnaltrexone bromide
PlaceboPlacebo comparatorParticipants will receive placebo matching to MNTX SC once daily for up to 4 or 7 days, depending upon the protocol version under which each participant is enrolled.
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants With Laxation Response Within 2 Hours of the First Dose

    Percentage of participants who had a laxation (that is, bowel movement) within 2 hours after the first dose of study drug, were reported. Participants taking stool softeners within 24 hours of study drug dosing and participants taking rescue laxative medications within 48 hours of study drug dosing were assessed as treatment failures.

    Measured: 2 hours

  2. Percentage of Participants With Laxation Response Within 4 Hours of the First Dose

    Percentage of participants who had a laxation (that is, bowel movement) within 4 hours after the first dose of study drug, were reported. Participants taking stool softeners within 24 hours of study drug dosing and participants taking rescue laxative medications within 48 hours of study drug dosing were assessed as treatment failures.

    Measured: 4 hours

Secondary outcomes (1)
  1. Time to First Rescue-Free Bowel Movement (Laxation)

    A rescue-free laxation was defined as a laxation without use of any rescue medication or rescue procedures. Time to first rescue-free bowel movement following the first dose of study drug was reported.

    Measured: Baseline (Day 1) up to Day 4 or 7

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Mar 2008 (estimated)
  2. Study start19 Oct 2007
  3. Primary completion21 Jan 2009
  4. Study completion21 Jan 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
37 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00640146
Sponsor's protocol ID
MNTX2101
Status last verified
Aug 2019
First submitted
18 Mar 2008
Last updated
4 Sep 2019
Data monitoring committee
No

Publications

  • Anissian L, Schwartz HW, Vincent K, Vincent HK, Carpenito J, Stambler N, Ramakrishna T. Subcutaneous methylnaltrexone for treatment of acute opioid-induced constipation: phase 2 study in rehabilitation after orthopedic surgery. J Hosp Med. 2012 Feb;7(2):67-72. doi: 10.1002/jhm.943. Epub 2011 Oct 13.

    PubMed 21998076

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Methylnaltrexone bromide in people with Opioid-induced Constipation, run by Bausch Health Americas, Inc. at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 4 Sep 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 4 Sep 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants With Laxation Response Within 2 Hours of the First Dose (time frame: 2 hours). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00640146, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Sep 2019.

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