Polyp Prevention Trial
- Full Text View
- Tabular View
- No Study Results Posted
- Disclaimer
- How to Read a Study Record
The primary objective of the Poly Prevention Trial (PPT) is to determine whether a low fat, high fiber, high vegetable and fruit eating plan will decrease the recurrence of adenomatous polyps of the large bowel. Secondary objectives of the PPT include 1) evaluating the effectiveness of the intervention program with respect to participant achievement of dietary goals; 2) examining the relation of dietary change and biochemical markers in blood; and 3) assessing the impact of the intervention on quality of life indicators.
Condition | Intervention | Phase |
---|---|---|
Polyp Prevention |
Behavioral: Diet Assessment |
Phase 1 |
Study Type: | Interventional |
Study Design: | Primary Purpose: Treatment |
Official Title: | Polyp Prevention Trial |
Estimated Enrollment: | 2440 |
Study Start Date: | June 1991 |
Study Completion Date: | April 2011 |
-
Behavioral: Diet Assessment
Ages Eligible for Study: | 35 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
- INCLUSION CRITERIA:
Men and women who at the time of randomization are 35 years of age or older and have had removed within 6 months of randomization one or more adenomatous polyps confirmed histologically by the Clinical Center trial pathologist.
EXCLUSION CRITERIA:
Persons with any of the following characteristics are ineligible for the study:
Carcinoma in any polyp removed at baseline endoscopy. High grade dysplasia is not considered carcinoma for purposes of study eligibility.
Failure to examine the cecum during baseline colonoscopy.
Incomplete removal of polyps at baseline colonoscopy.
Surgical removal of polyps.
Familial polyposis or other polyposis syndromes.
Adenomatous polyp discovered before the age of 35.
History of large bowel cancer, including intramucosal carcinoma.
History of histologically or radiographically confirmed inflammatory bowel disease (ulcerative colitis or Crohn's disease).
History of large bowel resection.
Weight move than 150% of desirable weight according to the 1983 Metropolitan Life Insurance Tables.
Use of lipid-lowering drugs in pharmacologic doses in the last month.
Major life-limiting conditions reducing likelihood of completing 4-year follow-up.
Already consuming a dietary pattern similar to the intervention eating plan.
Any dietary practice, behavior, or attitude that would substantially limit adherence to the intervention program.
Participation in other clinical studies that may interfere with participation in the PPT.
Unable or unwilling to sign informed consent form.
Found to be unreliable and uncooperative providers of dietary information during the pre-randomization period.
Able to give reasonable assurance of remaining in the Clinical Center area for duration of the study.
United States, Maryland | |
National Cancer Institute (NCI), 9000 Rockville Pike | |
Bethesda, Maryland, United States, 20892 |
Principal Investigator: | Amanda J Cross, Ph.D. | National Cancer Institute (NCI) |
Publications:
Responsible Party: | Amanda J. Cross, Ph.D./National Cancer Institute, National Institutes of Health |
ClinicalTrials.gov Identifier: | NCT00339625 History of Changes |
Other Study ID Numbers: | 9999910159, OH91-C-0159 |
Study First Received: | June 19, 2006 |
Last Updated: | May 31, 2012 |
Health Authority: | United States: Federal Government |
Keywords provided by National Institutes of Health Clinical Center (CC):
Adenomatous Polyp Dietary Intervention Large Bowel |
Additional relevant MeSH terms:
Polyps Pathological Conditions, Anatomical |
ClinicalTrials.gov processed this record on October 16, 2012