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Role of Diet on the Microbiome of the Digestive System
RecruitingObservational study
The Role of Diet and the Microbiome in Inducing Somatic Mutations in Colorectal Epithelial Cells and Its Predisposition to Carcinogenesis - A Pilot Study
Who can join
Ages 45 and older · All sexes
Full eligibility criteria
Inclusion Criteria: * GROUP I: Patients presenting for a screening colonoscopy * GROUP I: Age of 45 and above * GROUP I: Strict vegetarian diet, determined by using diet history questionnaire 3.0 National Institutes of Health (NIH) * GROUP I: Non smoker * GROUP I: Ability to understand and willingness to sign an informed consent form, complete web based dietary assessment and provide stool, colonic mucosa and blood samples * GROUP II: Patients presenting for a screening colonoscopy * GROUP II: Age of 45 and above * GROUP II: Omnivorous diet * GROUP II: Non smoker * GROUP II: Ability to understand and willingness to sign an informed consent form, complete web based dietary assessment and provide stool, colonic mucosa and blood sample Exclusion Criteria: * • Current smokers (nicotine abuse only) * Positive family history of colon cancer or colon cancer related syndromes * Recent use of antibiotics in 1 month * History of inflammatory bowel disease, and/or radiation enteritis or colitis * Pregnant and breastfeeding women * Women of child-bearing potential who have positive urine or serum pregnancy test * Heavy drinker (defined as more than 14 drinks per week) * Currently using anti-flatulence medications, probiotics and/or fiber supplements * Major dietary restrictions and/or following a special diet * Patient with positive fecal test/symptoms
About the study
This study is to learn more about how diet affects the microbiome (bacteria and microorganisms) of the digestive system. Researchers want to learn if this, in turn, has an effect on if and how people then develop colorectal cancer.
Sponsor: M.D. Anderson Cancer Center · Participants: 30 · Started: Sep 29, 2020
Contact the study team
- Anusha Thomas, MD · Phone: 713-563-9600
Official record on ClinicalTrials.gov — NCT04666727
Locations in the U.S.
| Texas | M D Anderson Cancer Center, Houston |
Conditions
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.