- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04538482
DASH INtervention to INvestigate the Gut (DINING)
February 19, 2024 updated by: H. Lee Moffitt Cancer Center and Research Institute
Determining the structural-and Functional-level Effects of Diet-specific Interventions on the Gut-microbiota of a Diverse Sample of Southern United States Adults
The study investigators will recruit a generally healthy sample of 112 black and white adults from Birmingham, AL to participate in a 28-day randomized, controlled feeding study.
Participants will be randomized to receive either the DASH diet or a standard American diet.
All meals will be provided by the study.
Fecal samples will be collected at multiple time points before, during, and after the dietary intervention and will be analyzed using PCR to amplify the V4 region of the 16S rRNA gene and to sequence bases using the MiSeq platform.
Sequenced data will then be analyzed using QIIME.
The investigators hypothesize that participants receiving the DASH diet will have a greater increase in alpha diversity and greater changes in abundances of CRC-associated microbes than participants receiving the standard American diet.
The investigators will also evaluate functional-level markers including bile acid and short chain fatty acid (SCFA) production and inflammatory markers.
If the investigator's hypothesis is supported, they expect to see reduced production of secondary bile acids (e.g., deoxycholic acid), greater SCFA production (e.g, butyrate), and reduction in gut and systemic inflammation (e.g, calprotectin, IL-6) among participants receiving the DASH diet compared to the standard American diet.
The investigator's findings will provide preliminary evidence for the DASH diet as an approach for cultivating a healthier gut microbiota across racially diverse populations.
These findings can impact clinical, translational, and population-level approaches for modification of the gut microbiota to reduce risk of chronic diseases like CRC.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Estimated)
112
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Alissa Pena
- Phone Number: 813-745-7710
- Email: Alissa.Pena@moffitt.org
Study Contact Backup
- Name: Tiffany L Carson, PhD
- Phone Number: 813-745-4944
- Email: Tiffany.Carson@moffitt.org
Study Locations
-
-
Florida
-
Tampa, Florida, United States, 33612
- Recruiting
- Moffitt Cancer Center
-
Contact:
- Tiffany Carson, PhD
-
Principal Investigator:
- Tiffany Carson, PhD
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
17 years to 63 years (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Description
Inclusion Criteria:
- black or white race
- non-Hispanic ethnicity
- age 19-65 years
- able to travel to the UAB Bionutrition Unit daily to retrieve meals
Exclusion Criteria:
- gastrointestinal (GI) conditions i.e., irritable bowel, diverticulitis, peptic ulcers, Crohn's, GI cancers, and adenatomous polyps
- antibiotic or probiotic use in the previous 90 days
- smoking/tobacco use
- heavy alcohol consumption
- major medical conditions (e.g., renal disease, diabetes, cancer
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: DASH Diet
calorie-restricted DASH diet (25% fat; 57% carbohydrate; 18% protein; 34 g fiber)
|
Participant will receive foods following the DASH dietary pattern for 28 days.
|
Active Comparator: standard American diet
calorie-restricted standard American diet (35% fat; 51% carbohydrate; %15 protein; 14 g fiber)
|
Participants will receive foods following the standard American diet for 28 days.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean change in alpha diversity
Time Frame: baseline - day 28
|
The investigators will assess the difference in alpha diversity determined by analyzing fecal samples.
|
baseline - day 28
|
Mean change in alpha diversity
Time Frame: day 28 - day 42
|
The investigators will assess the difference in alpha diversity determined by analyzing fecal samples.
|
day 28 - day 42
|
Diet specific changes in secondary bile acids
Time Frame: baseline - day 28
|
The investigators will calculate changes in cholic acid in milligrams
|
baseline - day 28
|
Diet specific changes in secondary bile acids
Time Frame: day 28 - day 42
|
The investigators will calculate changes in cholic acid in milligrams
|
day 28 - day 42
|
Diet-specific changes in inflammatory marker
Time Frame: baseline - day 28
|
The investigators will calculate changes in interleukin-6 in pg/L
|
baseline - day 28
|
Diet-specific changes in inflammatory marker
Time Frame: day 28 - day 42
|
The investigators will calculate changes in interleukin-6 in pg/L
|
day 28 - day 42
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Collaborators
Investigators
- Principal Investigator: Tiffany L Carson, PhD, Moffitt Cancer Center
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
March 7, 2022
Primary Completion (Estimated)
May 31, 2026
Study Completion (Estimated)
May 31, 2026
Study Registration Dates
First Submitted
August 29, 2020
First Submitted That Met QC Criteria
August 29, 2020
First Posted (Actual)
September 4, 2020
Study Record Updates
Last Update Posted (Actual)
February 20, 2024
Last Update Submitted That Met QC Criteria
February 19, 2024
Last Verified
February 1, 2024
More Information
Terms related to this study
Other Study ID Numbers
- MCC-21224
- R01CA253219 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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