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Study Evaluating Long-Term Safety Of MOA-728 In Subjects With Opioid-Induced Constipation

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: December 8, 2008
Last Update Posted: September 1, 2014
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Valeant Pharmaceuticals International, Inc.
This is a one-year study to evaluate the long-term safety and tolerability of the subcutaneous (just under the skin) injection form of MOA-728 for the treatment of opioid-induced constipation in subjects with nonmalignant pain. The study consists of a 2 week screening period, a 48 week open-label treatment period and a 2 week follow-up period. Subjects will need to agree to self-administer subcutaneous injections, complete daily diaries, and check-in via a daily telephone call during that year-long period.

Condition Intervention Phase
Constipation Drug: N-methylnaltrexone bromide (MOA-728) Phase 3

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: An Open-Label Study To Evaluate The Long-Term Safety Of Subcutaneous MOA-728 For Treatment Of Opioid-Induced Constipation In Subjects With Nonmalignant Pain

Resource links provided by NLM:

Further study details as provided by Valeant Pharmaceuticals International, Inc.:

Primary Outcome Measures:
  • collection of safety data & assessments to include monitoring of treatment emergent adverse events, safety laboratory measurements, electrocardiograms and changes in the physical exam including vital signs while on therapy [ Time Frame: 1 year ]

Secondary Outcome Measures:
  • change in bowel function compared to baseline [ Time Frame: 1 year ]

Enrollment: 1040
Study Start Date: December 2008
Study Completion Date: September 2010
Primary Completion Date: September 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Drug: N-methylnaltrexone bromide (MOA-728)
48 week treatment with 12 mg MOA-728 administered subcutaneously at least once per week with a maximum frequency of once daily.
Other Name: Relistor


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • men and women 18 years or older,
  • history of pain of at least 2 months duration before study entry due to documented underlying nonmalignant condition,
  • history of constipation due to opioid use for the nonmalignant condition,

Exclusion Criteria:

  • diagnosis of significant GI disorder such as bowel obstruction, fecal incontinence or rectal prolapse for example,
  • history of active inflammatory bowel disease, irritable bowel syndrome, or megacolon within 6 months before study entry,
  • history of malignancy or chronic constipation before initiation of opioid therapy.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00804141

  Show 120 Study Locations
Sponsors and Collaborators
Valeant Pharmaceuticals International, Inc.
Study Director: James Joffrion Valeant Pharmaceuticals International, Inc.
  More Information

Additional Information:
Webster R, Michna E, Khan A, et al., The long-term efficacy of subcutaneous methylnaltrexone for the treatment of opioid-induced constipation in patients with chronic nonmalignant pain. J. Pain, 12(4), Supplement , Page P70, April 2011

Responsible Party: Valeant Pharmaceuticals International, Inc.
ClinicalTrials.gov Identifier: NCT00804141     History of Changes
Other Study ID Numbers: 3200K1-3358
First Submitted: December 5, 2008
First Posted: December 8, 2008
Last Update Posted: September 1, 2014
Last Verified: June 2011

Keywords provided by Valeant Pharmaceuticals International, Inc.:
treatment for opioid-induced constipation

Additional relevant MeSH terms:
Signs and Symptoms, Digestive
Signs and Symptoms
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Narcotic Antagonists