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Lyophilized Black Raspberries in Adults With Familial Adenomatous Polyposis (FAP)
study id #: NCT00770991
condition: Familial Adenomatous Polyposis
This is a 36 week dietary intervention pilot study to evaluate the effects of lyophilized black raspberries on rectal polyp burden and biomarkers in subjects with FAP. Subjects will undergo a colonoscopy or sigmoidoscopy before study treatment to determine eligibility for the study. Eligible participants will undergo a sigmoidoscopy at 36 weeks after the initiation of study treatment. The size and number of rectal polyps will be documented on a code sheet and by photograph. The efficacy outcome will include the percentage reduction in the number of rectal polyps between baseline and 36 weeks.
Drug: Black raspberry (BRB) Slurry
Drug: Black Raspberry (BRB) Suppositories
Drug: Black Raspberry (BRB) Placebo Slurry
start date: December 2005
estimated completion: December 2008
last updated: February 11, 2016
phase of development: Phase 1
size / enrollment: 34
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Prevention
- Change From Baseline to End of Study in Number of Rectal Polyps [ Time Frame: Baseline and 36 weeks ] [ Designated as safety issue: No ]
- Change in Burden of Rectal Polyps [ Time Frame: Baseline and 36 weeks ] [ Designated as safety issue: No ]
The burden was measured as the sum of the number of polyps x size of polyps in mm. The change in burden was determined between baseline and 36 weeks.
- Apoptosis and Cell Proliferation Measured by Percent Difference in Staining. [ Time Frame: baseline and 36 weeks ] [ Designated as safety issue: No ]
A pooled analysis of all participants was used for biomarker results. Tissue from normal mucosa and rectal polyps were obtained to assay KI 67 (proliferation) and TUNEL at baseline and end of treatment. A decrease in the value of KI 67 implies lower proliferation while an increase in TUNEL is suggestive of an increase in apoptosis.
- Diagnosis of familial adenomatous polyposis with at least 5 rectal polyps which are greater than or equal to 2 mm on baseline colonoscopy
- Have an endoscopically assessable rectal segment
- Have not taken NSAIDs or selective COX-2 inhibitors for two months prior to the study and willing to remain off NSAIDs for the study duration.
- Known allergies or hypersensitivity to berries
- Diabetes mellitus
- Subjects taking NSAIDs or COX-2 inhibitors who cannot be taken off the medication due to their clinical condition.
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