E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Opioid-induced constipation in subjects with cancer-related pain |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 9.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10010774 |
E.1.2 | Term | Constipation |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The objective of this study is to evaluate the efficacy and safety of sub-cutaneous methylnaltrexone in relieving opioid-induced constipation in subjects with cancer-related pain. |
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E.2.2 | Secondary objectives of the trial | |
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Is a man or woman aged 18 years or older. 2. Has a body weight ≥ 38 kg. 3. Has cancer (active or in remission), and has cancer-related pain (ie, pain due to cancer or treatment of cancer). 4. Has a life expectancy of ≥ 6 months. 5. Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2. 6. Is receiving opioids for cancer-related pain, and has been on an around-the-clock regimen, for at least 2 weeks before the first dose of test article. The opioid regimen (oral, transdermal, intravenous, or SC opioids) must be at a daily dose of ≥ 30 mg of oral morphine equivalents. The dose should not be reduced by ≥ 50% during this period, although dose increases are permitted. 7. Has a diagnosis of OIC as determined by the investigator. 8. Is willing to follow study-specific laxative use requirements: a. If already taking laxatives or stool softeners, the regimen must have been stable during the 3 days before the screening period, and the subject must be willing to continue the same regimen until the end of the treatment period. b. If not taking laxatives or stool softeners, a regimen must be initiated at the screening visit and the subject must be willing to continue the regimen until the end of the treatment period. c. Rescue laxative use is restricted to sodium phosphate enemas, bisacodyl suppositories, oral bisacodyl, or oral magnesium citrate. d. Rescue laxatives are not to be used within the 48-hour period before the first dose of test article. 9. Had no more than 2 rescue-free bowel movements (RFBMs) during the 7 days before the first dose of test article. 10. All female and male subjects who are biologically capable of having children must agree and commit to the use of a reliable method of birth control for the duration of the study and for 15 days after the last dose of test article. A subject is biologically capable of having children even if he or she is using contraceptive or if his or her sexual partner is sterile or using contraceptives. 11. Has complied with all screening assessments and did not deviate from study-specific laxative use requirements. |
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E.4 | Principal exclusion criteria |
1. Has any nonopioid cause of bowel dysfunction that in the opinion of the investigator is likely to be a major contributor to the constipation. 2. Is administering or receiving opioids only as needed (PRN) or as rescue doses, not on an around-the-clock schedule. 3. Decreased or withheld laxatives during the screening period. 4. Has a history of chronic constipation before initiation of opioid therapy. 5. Has taken or is likely to take prohibited chemotherapy during the screening or treatment periods: a. Has a history of chemotherapy-induced constipation or diarrhea and is scheduled to receive this chemotherapy during the screening or treatment periods. b. Is scheduled to receive chemotherapy during the screening or treatment periods that is known to have or in the opinion of the investigator has a high probability of causing diarrhea or constipation, and in the opinion of the investigator is likely to cause diarrhea or constipation in this patient. c. Has received vinca alkaloids (eg, vincristine, vinblastine, or vinorelbine) within 4 months before screening, or anticipates treatment with vinca alkaloids during the screening or treatment periods. d. Has received irinotecan (CPT-11, camptothecin-11, Camptosar) within 4 weeks before screening, or anticipates treatment with irinotecan during the screening or treatment period. e. Has received cytotoxic agents within 4 weeks before screening, or anticipates such treatment during study participation, unless subject is on a stable regimen that has been reasonably well tolerated in the investigator's judgment (eg, has a toxicity grade of 0, 1, or 2 on the National Cancer Institute [NCI] Common Toxicity Criteria). 6. Has received any prohibited treatments. 7. Has known or suspected radiation enteritis, or is scheduled to receive abdominal or pelvic radiation during screening or treatment periods. 8. Has known or suspected mechanical gastrointestinal obstruction. 9. Has end-stage renal disease receiving dialysis. 10. Has active diverticulitis as determined by the investigator. 11. Has evidence of current fecal impaction determined either by physical examination or previously performed x-ray examination. 12. Has clinical evidence of peritonitis or typhlitis. 13. Has a history of bowel surgery within 1 week before screening visit, or anticipating surgery during the screening, treatment, or follow-up periods of the study. 14. Has a fecal ostomy. 15. Has a known or suspected allergy to methylnaltrexone or other similar compounds (ie, naltrexone or naloxone). 16. Has received any investigational drug or devices within the 30 days before administration of the first dose of test article. 17. Is a pregnant or breastfeeding woman. 18. Has any other clinically important abnormality, that in the investigators judgment, will substantially increase the risk associated with the subject's participation in and completion of the study, or could preclude the evaluation of the subject’s response 19. Had diarrhea at any time during the screening period. 20. Was noncompliant with opioid or laxative use, or with use of the e-diary during the screening period. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint is the proportion of subjects who have a rescue-free bowel movement within 4 hours after the first dose of study drug. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 6 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end of the study is the last visit of the last subject. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 0 |
E.8.9.1 | In the Member State concerned months | 16 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 0 |
E.8.9.2 | In all countries concerned by the trial months | 16 |
E.8.9.2 | In all countries concerned by the trial days | 0 |