Opioid-Induced ConstipationPhase 3NCT01901341
The Efficacy and Safety Study of CB-5945 for the Treatment of Opioid-Induced Constipation
A Phase 3 study testing CB-5945 in people with Opioid-Induced Constipation, run by Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA).
Trial summary
The purpose of this study is to evaluate the safety and efficacy of CB-5945 for the treatment of opioid-induced constipation (OIC) in adults taking opioid therapy for chronic non-cancer pain. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Opioid-Induced Constipation
- What is being tested?
- CB-5945
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 44 participants
- Where
- No sites listed yet
- Study dates
- 2 Jul 2013to 13 Feb 2014
- Phase
- Phase 3
- 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 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Is taking a stable daily dose of opioids of ≥ 30 mg morphine equivalent total daily dose (METDD) for chronic non-cancer pain
- Has constipation that is caused by the chronic use of opioids
- Is willing to use only the study provided laxative(s) and to discontinue use of all other laxatives, enemas, stool softeners, and other medications to treat constipation (e.g., lubiprostone) from Screening until the last study assessment
Who cannot join
- Has gastrointestinal (GI) or pelvic disorders known to affect bowel transit (for example [e.g.], obstruction) or contribute to bowel dysfunction
- Has evidence of intestinal obstruction
- Has a history of rectal bleeding not due to hemorrhoids or fissures within 6 months of screening
- Has an active malignancy of any type (participants with a history of successfully treated malignancy >5 years before the scheduled administration of study medication and participants with treated basal or squamous cell cancer may be enrolled)
- Is taking antispasmodics (e.g., dicyclomine), antidiarrheals (e.g., loperamide), prokinetics (e.g., metoclopramide), or locally acting chloride channel activators (e.g., lubiprostone)
- Is taking non-opioid medications known to cause constipation (e.g., iron sulfate therapy, tricyclic antidepressants)
About this study
Official title: A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Phase 3 Study to Evaluate the Efficacy and Safety of CB-5945 for the Treatment of Opioid-Induced Constipation in Adults Taking Opioid Therapy for Chronic Non-Cancer Pain
The purpose of this study is to evaluate the safety and efficacy of CB-5945 for the treatment of opioid-induced constipation (OIC) in adults taking opioid therapy for chronic non-cancer pain.
Read the detailed description
This is a multicenter, double-blind, placebo-controlled, parallel-group study in participants with OIC taking opioid therapy for chronic non-cancer pain. Approximately 600 participants (300 participants per treatment group) with OIC will be randomized at approximately 75 study centers to receive either oral 0.25 mg CB-5945 BID or oral matching placebo BID for the 12-week double-blind treatment period, followed by a 4-week follow-up period. All randomized participants will be evaluated for clinical response for duration of their study participation. All participants will be followed for safety for 4 weeks after last dose of the study medication, regardless of when they discontinue study medication. The clinical study report for this study includes pooled results for studies 5945-OIC-12-02 (NCT01901302) 5945-OIC-12-03 (NCT01901328), and 5945-OIC-12-04 (NCT01901341).
- Conditions
- Opioid-Induced Constipation
- Being tested
- CB-5945, Placebo
- Keywords
- Opioid, Constipation, Chronic, Pain
- Medical subject headings
- Opioid-Induced Constipation, Constipation, Bronchiolitis Obliterans Syndrome, Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CB-5945Drug
Also called Bevenopran, ADL5945
PlaceboDrug
| Study group | Role | What they receive |
|---|---|---|
| CB-5945 | Experimental | 0.25 milligrams (mg) CB-5945 administered orally twice daily (BID) for a 12-week treatment period Receives: Drug: CB-5945 |
| Placebo | Placebo comparator | Placebo administered orally BID for a 12-week treatment period Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Overall Spontaneous Bowel Movement (SBM) Responder Rates at the 12-weeks
A Spontaneous Bowel Movement (SBM) Weekly Responder (calculated for each week of the 12-week double-blind treatment period) is a participant who has ≥ 3 SBMs for the week and an increase from baseline of ≥1 SBM for the specified week, based on at least 4 Available Data Days (ADDs) during the week. For the definition of the primary efficacy endpoint, Overall SBM Responder is a participant who is a Weekly SBM Responder for 9 of the 12 weeks of the double-blind treatment period, including 3 of the last 4 weeks (Weeks 9, 10, 11 and 12).
Measured: 12 weeks
Secondary outcomes (2)
Change From Baseline of Chronic Opioid-Related Gastrointestinal Symptom Scale (CORGISS) Scores at 12 Weeks
The CORGISS is designed to assess GI symptoms related to opioid use in patients with chronic non-cancer pain. The CORGISS asks participants to rate the severity of GI symptoms over the previous 24 hours, with answers ranging from 0 ("did not experience") to 4 ("very severe").
Measured: Baseline, 12 weeks
Overall Complete Spontaneous Bowel Movement (CSBM) Responder Rates at 12 Weeks
A CSBM Weekly Responder is a subject who has ≥ 3 CSBMs for the specified week and an increase from baseline of ≥1 CSBM for the week. An Overall CSBM Responder is a subject who is a Weekly CSBM Responder for 9 of the 12 weeks of the double-blind treatment period, including 3 of the last 4 weeks (Weeks 9, 10, 11 and 12).
Measured: 12 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Jul 2013 (estimated)
- Study start2 Jul 2013
- Primary completion13 Feb 2014
- Study completion13 Feb 2014
Why it stopped: Due to difficulties with enrollment, the study was terminated early.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Opioid-Induced ConstipationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 44 participants (actual)
Sponsor and investigators
- Lead sponsor
- Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01901341
- Sponsor's protocol ID
- 2402-005
- Other IDs
- 5945-OIC-12-04
- Status last verified
- Oct 2018
- First submitted
- 9 Jul 2013
- Last updated
- 15 Nov 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- Individual data sharing
- Yes: https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf
Study at a glance
From the registry record, last updated by the sponsor on 15 Nov 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Phase 3 Study to Evaluate the Efficacy and Safety of CB-5945 for the Treatment of Opioid-Induced Constipation in Adults Taking Opioid Therapy for Chronic Non-Cancer Pain
- ClinicalTrials.gov ID
- NCT01901341
- Acronym / sponsor ID
- 2402-005
- Conditions
- Opioid-Induced Constipation
- Keywords
- Opioid, Constipation, Chronic, Pain
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Due to difficulties with enrollment, the study was terminated early.
- Enrolment
- 44 participants (actual)
- Lead sponsor
- Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)Industry (pharma, biotech, devices)
- Study start
- 2 Jul 2013 (actual)
- Primary completion
- 13 Feb 2014 (actual)
- Study completion
- 13 Feb 2014 (actual)
- First posted
- 17 Jul 2013 (estimated)
- Results
- Posted 15 Jun 2015
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to evaluate the safety and efficacy of CB-5945 for the treatment of opioid-induced constipation (OIC) in adults taking opioid therapy for chronic non-cancer pain.
Detailed description
This is a multicenter, double-blind, placebo-controlled, parallel-group study in participants with OIC taking opioid therapy for chronic non-cancer pain. Approximately 600 participants (300 participants per treatment group) with OIC will be randomized at approximately 75 study centers to receive either oral 0.25 mg CB-5945 BID or oral matching placebo BID for the 12-week double-blind treatment period, followed by a 4-week follow-up period. All randomized participants will be evaluated for clinical response for duration of their study participation. All participants will be followed for safety for 4 weeks after last dose of the study medication, regardless of when they discontinue study medication. The clinical study report for this study includes pooled results for studies 5945-OIC-12-02 (NCT01901302) 5945-OIC-12-03 (NCT01901328), and 5945-OIC-12-04 (NCT01901341).
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| CB-5945 | Experimental | Drug: CB-59450.25 milligrams (mg) CB-5945 administered orally twice daily (BID) for a 12-week treatment period |
| Placebo | Placebo comparator | Drug: PlaceboPlacebo administered orally BID for a 12-week treatment period |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Is taking a stable daily dose of opioids of ≥ 30 mg morphine equivalent total daily dose (METDD) for chronic non-cancer pain
- Has constipation that is caused by the chronic use of opioids
- Is willing to use only the study provided laxative(s) and to discontinue use of all other laxatives, enemas, stool softeners, and other medications to treat constipation (e.g., lubiprostone) from Screening until the last study assessment
Key exclusion criteria (6 listed)
- Has gastrointestinal (GI) or pelvic disorders known to affect bowel transit (for example [e.g.], obstruction) or contribute to bowel dysfunction
- Has evidence of intestinal obstruction
- Has a history of rectal bleeding not due to hemorrhoids or fissures within 6 months of screening
- Has an active malignancy of any type (participants with a history of successfully treated malignancy >5 years before the scheduled administration of study medication and participants with treated basal or squamous cell cancer may be enrolled)
- Is taking antispasmodics (e.g., dicyclomine), antidiarrheals (e.g., loperamide), prokinetics (e.g., metoclopramide), or locally acting chloride channel activators (e.g., lubiprostone)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| CB-5945Also: Bevenopran, ADL5945 | Drug | CB-5945 |
| Placebo | Drug | Placebo |
Primary outcome
Overall Spontaneous Bowel Movement (SBM) Responder Rates at the 12-weeks
Time frame: 12 weeks
A Spontaneous Bowel Movement (SBM) Weekly Responder (calculated for each week of the 12-week double-blind treatment period) is a participant who has ≥ 3 SBMs for the week and an increase from baseline of ≥1 SBM for the specified week, based on at least 4 Available Data Days (ADDs) during the week. For the definition of the primary efficacy endpoint, Overall SBM Responder is a participant who is a Weekly SBM Responder for 9 of the 12 weeks of the double-blind treatment period, including 3 of the last 4 weeks (Weeks 9, 10, 11 and 12).
2 secondary outcomes
Change From Baseline of Chronic Opioid-Related Gastrointestinal Symptom Scale (CORGISS) Scores at 12 Weeks
Time frame: Baseline, 12 weeks
Overall Complete Spontaneous Bowel Movement (CSBM) Responder Rates at 12 Weeks
Time frame: 12 weeks
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Nov 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: Yes. https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing CB-5945 in people with Opioid-Induced Constipation, run by Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA).
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 3 inclusion and 6 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: stopped early, as of the sponsor's last update on 15 Nov 2018. Status can change between updates, so confirm with the study contact before making plans.
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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
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 15 Jun 2015). 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?
Overall Spontaneous Bowel Movement (SBM) Responder Rates at the 12-weeks (time frame: 12 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 15 Nov 2018.