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This is a single-center, randomized, parallel group, double-blind, placebo-controlled, dose response, pharmacodynamic and pharmacokinetic study evaluating the effects of ROSE-010 on gastric, intestinal and colonic transit and gastric volumes in female patients with C- IBS.
Female patients with C-IBS will be screened for eligibility and informed about the study at the initial screening visit Visit 1. Within two weeks of Visit 1, eligible patients will be randomized to study medication, either 30 mcg, 100 mcg or 300 mcg ROSE-010 or placebo administered via abdominal s.c injection for a total of four days, three consecutive days during transit scintigraphy and once prior to SPECT imaging. The allocation to treatment group will be concealed.
Study medication will be administered at the Charlton 7 Clinical Research Unit (CRU) at Visits 2, 3, and 4, the days of scintigraphic assessment of gastric, small bowel and colonic transit of solids performed over a 48 hour period.
Within two to seven days of Visit 4, patients will be instructed to return to the Charlton 7 CRU for administration of a final injection of study medication followed by SPECT gastric accommodation measurements (Visit 5). Within seven to ten days of Visit 5, patients will return for Visit 6, final safety monitoring and an exit interview with study staff.
Investigational product, dosage and mode of administration
Patients will receive placebo or 30 mcg, 100 mcg or 300 mcg ROSE-010 administered s.c. in the abdomen once on Visit 2, immediately before the standardized breakfast meal, fifteen minutes before the first camera image is obtained. Study medication will be administered fifteen minutes before camera images obtained on Visits 3 and 4. Study medication will be administered immediately after the first fasting scan is obtained and before the second fasting scan during SPECT at Visit 5. Study medication will be administered at Charlton 7 CRU by CRU nurses.
Duration of treatment
ROSE-010 or matching placebo will be administered via abdominal s.c injection once daily for three consecutive days and one final day two to seven days later, over a ten-day interval.
Duration of patients involvement in the study
Each patient will attend six visits at the clinic during a period of two to four weeks.
1. Scintigraphic gastrointestinal and colonic transit
2. 99mTc SPECT measurement of gastric volumes
3. Assessment of stool frequency and consistency made by the patient using the Bowel Pattern Diary
The following safety assessments will be performed:
1. Laboratory safety tests, including a complete blood count (CBC), a comprehensive metabolic panel (CMP), and urinalysis (UA) at Visit 1 (study entry) and Visit 6 (study exit)
2. A physical examination by a study physician at Visit 1
3. Weight and vital signs (including temperature, pulse, blood pressure and respiration rate) at every visit
4. Urine pregnancy tests performed at Visit 1 and within 48 hours prior to receipt of radiation at Visit 2 transit test and Visit 5 SPECT test
5. Interview for concomitant medications and adverse events at every visit
An analysis of covariance (ANCOVA) will be used to compare transit parameters and gastric volumes among the treatment groups. If necessary a suitable transformation for potential skewness in the distributions of measured volumes may be used (e.g., ANCOVA on ranks or log volumes). If ANCOVA shows a p value less than or equal to 0.10, then both the 100 mcg and 300 mcg doses will be compared to placebo (p value less than or equal to 0.25). Dunnett's Test will be used to compare each dose group with placebo. Since each of the primary endpoints assesses a separate hypothesis regarding the effects of ROSE-010, no adjustment in the alpha level for testing multiple types of endpoints is anticipated, and a two-sided significance level of 0.05 will be used in each ANCOVA model.
Analysis data sets
The primary analyses will follow the intent to treat (ITT) paradigm with all patients randomized included in the analyses. Those patients with missing response values will have their missing values imputed via the overall (patients with non-missing data) mean and a corresponding adjustment in the ANCOVA residual error variance degrees of freedom (subtracting one for each missing value imputed). Safety data will be presented for all patients receiving investigational product.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Irritable Bowel Syndrome Constipation Predominant
ROSE-010, ROSE-010, ROSE-010, Placebo
Mayo Clinic Rochester
Published on BioPortfolio: 2014-08-27T03:16:22-0400
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