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Efficacy of Oxycodone/Naloxone(OXN), Versus Oxycodone (OXY), for the Reduction of Intensity of Opioid-induced Constipation in Pain Patients (OXN3505)

This study has been terminated.
(Lack of recruitment)
Information provided by (Responsible Party):
Mundipharma SAS Identifier:
First received: November 16, 2009
Last updated: September 25, 2015
Last verified: September 2015
The primary objective of this trial is to study the efficacy of oxycodone/naloxone prolonged release tablets (OXN PR), compared to oxycodone prolonged release tablets (Oxy PR), for the reduction of the intensity of opioid-induced constipation symptoms in patients treated for cancer or non-cancer pain.

Condition Intervention Phase
Drug: Oxycodone Naloxone
Drug: Oxycodone PR Tablets
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Study of Efficacy of OXN PR, Compared to Oxy PR, for Reduction of Intensity of Opioid-induced Constipation Symptoms in Pts Treated for Cancer or Non-cancer Pain: A Randomised, Double-blind, Controlled, Multicentre Study

Resource links provided by NLM:

Further study details as provided by Mundipharma SAS:

Primary Outcome Measures:
  • Change of intensity of constipation symptoms, as assessed by the BFI from baseline to Day 28. The BFI is the mean value of 3 single items: Ease of defecation; Feeling of incomplete bowel evacuation; Personal judgement of constipation. [ Time Frame: 28 days ]

Secondary Outcome Measures:
  • Change of BFI from baseline (bl) to Days 7,14,21. Change of PAC-SYM score from bl to Days 7,14,21,28. Change of KESS score from bl to Days 7,14,21,28. Frequency of laxative medication use between Day 0 & Day 28. Change of pain as assessed by BPI-SF [ Time Frame: Days 7, 14 and 21 ]

Enrollment: 225
Study Start Date: February 2010
Study Completion Date: February 2013
Primary Completion Date: June 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Prolonged release tablet
OxyCodone Naloxone controlled release tablet
Drug: Oxycodone Naloxone
Oxycodone Naloxone PR Tablet taken twice daily
Active Comparator: Tablet
Oxycodone PR Tablets
Drug: Oxycodone PR Tablets
Oxycodone PR Tablets taken twice daily

Detailed Description:

Eligible patients with documented cancer or non-cancer pain, either currently receiving a WHO step II opioid and requiring the initiation of a WHO step III opioid or currently receiving a WHO step III opioid, and having opioid-related constipation defined by either a KESS score ≥9 or the current use of laxatives (≥3 times per week), will be randomly assigned to receive either OXN PR or Oxy PR. Randomisation will be stratified on the cause of pain: cancer or non-cancer.

Any patient having completed the study and wishing to receive OXN PR afterwards may enter an optional open extension phase. During this phase, all patients will receive OXN PR and be managed as per the usual practice in the center until commercial OXN PR is available in France (with a limit of 1 year after Day 28). Adverse events will be assessed at each visit.


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

Inclusion criteria

  1. Male or female patient aged 18 years or older.
  2. With cancer pain or non-cancer pain such as chronic low back pain, osteoarthritis or other.
  3. Either currently receiving a WHO step II opioid and requiring the initiation of a WHO step III opioid (due to a lack of efficacy of the step II opioid) expected to last 28 days or more, or currently receiving a WHO step III opioid expected to last further 28 days or more.
  4. Having opioid-related constipation defined by either a KESS score ≥ 9 or the current use of laxatives (at least 3 times per week).
  5. Able, in the opinion of the Investigator, to comply with the study protocol.
  6. Women of childbearing potential must have a negative urine pregnancy test result at inclusion (test under supervision of the investigator) and use an effective birth control method. Women of non-childbearing potential must be postmenopausal or surgically sterile (hysterectomy and/or bilateral oophorectomy).
  7. Having received oral and written information about the study protocol and signed a written, informed consent to participate.

Exclusion criteria

  1. Pregnancy or breastfeeding.
  2. Known contraindication or hypersensitivity to oxycodone, naloxone, bisacodyl, any chemically close substance, and ingredients.
  3. Clinically significant impairment of cardiovascular, respiratory, liver or kidney function disease, as determined by medical history, clinical laboratory tests, ECG results, and physical examination, that in the opinion of the Investigator may present a risk upon exposure to the study medication.
  4. Known or suspected unstable brain or spinal cord metastases that may require changes in steroid treatment throughout the duration of the study.
  5. Increased intracranial pressure.
  6. Evidence of clinically significant gastrointestinal disease (e.g., paralytic ileus, peritoneal carcinosis), significant structural abnormalities of the gastrointestinal tract (e.g., scarring, obstruction etc) either related or not related to the underlying cancer or disease progression.
  7. Rheumatoid arthritis, as co-medication may have an impact on the study results, especially if co-medication is not stable within the study.
  8. Surgery completed prior to the start of the study, or planned surgery during the study that would influence pain or bowel function during the study or preclude completion of the study.
  9. Cyclic chemotherapy in the two weeks before inclusion or planned during the study that has shown in the past to influence bowel function. Patients having their first cycle of chemotherapy during the 2 weeks before the inclusion visit or during the study they should not be included in the study.
  10. Radiotherapy that, in the investigators opinion, would influence bowel function or pain during the study.
  11. Treatment with an opioid receptor antagonist in the month preceding inclusion.
  12. History of alcohol, opioid or other drug abuse.
  13. Current treatment with another psychoactive drug that, in the opinion of the Investigator, may present a risk when associated with an opioid.
  14. Any somatic or psychic condition that, in the opinion of the Investigator, may compromise the ability of the patient to understand and comply with the study protocol or to provide informed consent to participate.
  15. Patient who participated in a clinical research involving a new chemical entity or an experimental drug within 30 days of study entry. Concurrent enrolment in another clinical trial is not permitted unless the sole purpose of the other trial at the time of the OXN3505 inclusion visit is for long-term follow-up/survival data.
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Please refer to this study by its identifier: NCT01014559

Hôpital Louis Pradel
Bron, France, 69500
Sponsors and Collaborators
Mundipharma SAS
  More Information

Responsible Party: Mundipharma SAS Identifier: NCT01014559     History of Changes
Other Study ID Numbers: OXN3505
Study First Received: November 16, 2009
Last Updated: September 25, 2015

Keywords provided by Mundipharma SAS:
Oxycodone hydrochloride
Naloxone hydrochloride

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 processed this record on April 25, 2017