E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Scientific Terminology Opioid-Induced Constipation (OIC)
Laymen Terminology Constipation after taking Opioid drugs
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E.1.1.1 | Medical condition in easily understood language |
Cancer-Related Pain, Opioid-Induced Constipation |
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E.1.1.2 | Therapeutic area | Body processes [G] - Digestive System and Oral Physiological Phenomena [G10] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10010774 |
E.1.2 | Term | Constipation |
E.1.2 | System Organ Class | 10017947 - Gastrointestinal disorders |
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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 primary objective of this study is to compare the efficacy of NKTR-118 12.5 mg and 25 mg with placebo in the treatment of opioid-induced constipation (OIC) in pain related to malignancy in a 4-week double blind study (Part A). |
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E.2.2 | Secondary objectives of the trial |
The secondary objective is to compare NKTR-118 12.5 mg and 25 mg with placebo in the daily signs and symptoms associated with OIC (degree of straining, sensation of incomplete evacuation, and stool consistency), symptoms of constipation, and overall quality of life over a 4-week double-blind study (Part A).
To characterise the maintenance of effect of NKTR-118 over a 12-week extension (Part B). |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Provision of written informed consent prior to any study-specific procedures.
2. Men and women aged 18 or older.
3. Histologically or cytologically confirmed neoplasm causing pain and requiring management with opioids.
4. Self-reported active symptoms of OIC at screening (<3 RFBMs/week and experiencing >1 reported symptom of hard/lumpy stools, straining, or sensation of incomplete evacuation/anorectal obstruction in at least 25% of BMs over the previous 4 weeks); and Documented confirmed OIC (<3 RFBMs/week on average aver the 2-week OIC confirmation period.
5. Receiving a stable maintenance opioid regimen consisting of a total daily dose of >30 mg of oral morphine, or equianalgesic amount(s) of 1 or more opioid therapies for a minimum of 4 weeks prior to screening for cancer-related pain with no anticipated change in opioid dose requirement over the proposed study period as a result of disease progression.
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E.4 | Principal exclusion criteria |
1. Patients receiving Opioid regimen for treatment of pain other than related to cancer.
2. Any condition that may have affected the permeability of the blood-brain barrier, eg, known brain metastases, meningeal metastases, brain injury, multiple sclerosis, recent brain injury, uncontrolled epilepsy.
3. Patients with cancer-related pain due to ovarian cancer, leukaemia, or lymphoma are excluded. Patients with multiple myeloma will be allowed.
4. Patients requiring radiation therapy between the diaphragm and pelvis 4 weeks prior to Visit 1 (screening) and/or during Part A of the study are excluded. Any patients with suspected clinically relevant radiation-induced injury of small or large intestine are excluded.
5. Pregnancy or lactation.
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E.5 End points |
E.5.1 | Primary end point(s) |
Response (responder/non-responder) to study drug, where a responder is defined as having at least 3 Rescue-free bowel movements (RFBMs) per week during the 4-week placebo-controlled treatment period, with at least 1 RFBM per week increase over baseline for at least 3 out of 4 weeks. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Will be collected daily through the 4-week treatment period. |
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E.5.2 | Secondary end point(s) |
Part A and Part B: Change from baseline in RFBMs/week.
Part A and Part B: Mean number of days per week with at least 1 RFBM.
Part A: Time (in hours) to first post-dose RFBM.
Part A: Change from baseline in the degree of straining associated with RFBMs during the 4-week placebo-controlled treatment period.
Part A: Change from baseline in stool consistency (BSS) during the 4-week placebo-controlled treatment period.
Part A: Percentage of days with complete evacuation during the 4-week placebo-controlled treatment period.
Part B: Duration of response during the 12-week extension period.
Part A and B: Change from baseline in Patient Assessment of Constipation Symptoms (PAC-SYM) and Patient Assessment of Constipation Quality of Life (PAC-QOL) total score and each domain score. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Will be collected daily through the treatment period.
Part A: Will be evaluated at Visits 3, 5 and 6. Part B: Will be evaluated at Visits 4 and 6.. |
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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 | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
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 | Yes |
E.6.13 | Others | No |
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) | No |
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.8.2.4 | Number of treatment arms in the trial | 3 |
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 | 6 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 65 |
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 | No |
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 |
Australia |
Belgium |
Bulgaria |
Croatia |
Czech Republic |
Germany |
Hungary |
Poland |
Romania |
Slovakia |
South Africa |
Spain |
United Kingdom |
United States |
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E.8.7 | Trial has a data monitoring committee | Yes |
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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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 | 1 |
E.8.9.1 | In the Member State concerned months | 2 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 2 |
E.8.9.2 | In all countries concerned by the trial days | 0 |