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Study identifier: NCT05643859 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Impact of Dietary Fiber Supplementation on Colonic Microbiome

Condition: Benign Colorectal Neoplasm · Non-Neoplastic Anal Disorder  ·  Sponsor: OHSU Knight Cancer Institute

PhaseNA
Planned participants120
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This clinical trial tests whether daily fiber supplementation will change the mucosal microbiome of the colon. The microbiome are microorganisms that live in the human gut. They serve a vital role in maintaining health. Certain microbial strains are associated with the growth of colon polyps, which eventually could go on to form colon cancer. Giving dietary fiber supplements may help prevent precancerous polyps from ever developing.

This description comes directly from the study's public registry record.

Talk to the study team

Shahrose Rahman, M.D.  ·  503-494-8652  ·  rahmasha@ohsu.edu

Amber O'Connor  ·  oconnoam@ohsu.edu

Always discuss trial participation with your own doctor first.

Locations (1)

OHSU Knight Cancer InstitutePortland, Oregon, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT05643859