Phase 1 Seattle Dietary Biomarkers Development Center (P1-SDBDC)

The Seattle Dietary Biomarker Development Center (S-DBDC) aims to advance the science of measuring dietary intake by identification and validation of dietary biomarkers that improve upon self-reported diet. To accomplish this mission, the Seattle DBDC will carry out controlled feeding studies in healthy human volunteers. Metabolomics assays will be conducted on blood and urine specimens collected during the feeding studies for biomarker identification.

Study Overview

• Status: Completed
• Conditions: Healthy Adults
• Intervention / Treatment: Other: Controlled feeding study of beef and/or pinto beans; Other: Controlled feeding study of eggs and/or black beans

Detailed Description

The central mission of the Seattle Dietary Biomarker Development (DBDC) is to advance the science of measuring complex dietary exposures by rigorous identification and validation of dietary biomarkers that improve upon measurement error prone self-reported diet. To accomplish this mission, the Seattle DBDC will conduct a set of two, randomized, crossover, 3-period controlled feeding trials to develop metabolomics-based blood and urine biomarkers of 4 individual foods (1) beef and pinto beans or 2) eggs and black beans) and determine the dynamic ranges and half-lives of the urinary and blood-based dietary biomarkers. The two trials use the exact same sample protocol and study procedures and will be conducted successively.

For each feeding trial, 15 healthy adults will complete three feeding periods in random order (all protein from beef (trial 1) or eggs (trial 2); 1/2 protein from beef (trial 1) or eggs (trial 2); and 1/2 protein from pinto beans (trial 1) or black beans (trial 2); all protein from pinto beans (trial 1) or black beans (trial 2)). Each feeding period will consist of a 2-day run-in of controlled feeding followed by a 7-day feeding period, with about a 7-day washout between feeding periods. Blood and urine specimens will be collected before, at the mid-point, and at the end of each feeding period. In addition, an all-day pharmacokinetic evaluation will be conducted for 2 of the 3 feeding periods (all beef and all pinto beans (trial 1); all eggs and all black beans (trial 2)). Stool samples will be collected before, and at the end of each feeding period and stored for future studies. The collected specimens will be used for study outcomes and archived for future studies.

• Study Type: Interventional
• Enrollment (Actual): 30
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Washington
    • Seattle, Washington, United States, 98109
      • Fred Hutchinson Cancer Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

1. Healthy adults
2. Age 18 years and older
3. Willing to come to the Fred Hutch campus 16 times during the study
4. BMI 18.5-39.9 kg/m2

Exclusion Criteria:

1. History of gastrointestinal disorders (e.g., ulcerative colitis, Crohn disease, celiac sprue, Hereditary Non-polyposis Colorectal Cancer, familial adenomatous polyposis, pancreatic disease, liver disease)
2. Bleeding disorder that precludes blood draws
3. Previous gastrointestinal resection or bariatric surgery
4. Recent hospital admissions (in past 6 months) for heart disease (myocardial Infarction/cerebrovascular accident or congestive heart failure) or other cardiovascular disease/coronary artery disease condition under physician guided therapy that is not medically stable.
5. Cancer under active radiation or chemotherapy treatment (post-6 mos)
6. Pregnant or lactating
7. Weight change (±5% in 3 months)
8. Regular alcohol intake of >2 drinks/day (2 drinks being equivalent to 720 ml beer, 240 ml wine, or 90 ml spirits) and unwilling to abstain during feeding periods
9. Use of tobacco and/or marijuana, hookahs, e-cigarettes (e-cigs, vaping devices, etc) and not willing to abstain during feeding periods.
10. Use of illicit drugs and not willing to abstain during feeding periods.
11. BMI ≥40 kg/m2
12. Seated blood pressure > 140/90 mm Hg
13. Fasting clinical lab tests outside acceptable value as ascertained at a screening blood draw°
14. Food allergies/intolerances or major dislikes to foods used in the study menus; unwilling to consume study foods.
15. Current use of specific prescription medication (study staff will review medications to determine eligibility)**
16. Regular (daily to weekly) use of over-the-counter weight-loss aids, anti-inflammatories, and unable to stop taking these during feeding periods
17. Unwilling to stop taking OTC dietary supplements that interfere with the test foods being studied, including pills, chewables, liquids or powders for the following: protein supplements, soy, fiber, flaxseed, fish oil (incl. cod liver oil), probiotics, glucosamine and chondroitin (if vitamin supplement is MD prescribed - may continue). Study staff will review supplements to determine eligibility
18. Oral or IV antibiotic use in the past 3 months (could defer participation until 3 months post completion of course of antibiotics)

19. Inability to freely give informed consent.

    • Fasting clinical lab tests outside acceptable value as ascertained at a screening blood draw:

Description [Acceptable Values]

Glucose-Fasting: Serum Glucose [54-125 mg/dl]

Urea: BUN [6-50mg/dl]

Serum Creatinine [0.4-1.3 mg/dl]

eGFR: estimated GFR [>60ml/min]

Serum Sodium [133-146 mmol/L]

ALT/GPT Liver Enzyme [5-60 U/L]

AST/GOT Liver Enzyme [5-40 U/L]

Alkaline Phosphatase Liver Enzyme [20-135 U/L]

Total Bilirubin Liver Function [0.0-1.9 mg/dl]

Total Serum Protein [5-9.0 g/dl]

Albumin Serum Protein [3.5-5.9 g/dl]

LDL Cholesterol [<160 mg/dl]

Triglycerides [<500 mg/dl]

WBC White Blood Cells [3-10.5 K/uL]

HCT (women) Hematocrit [35-48 g/dl]

HCT (men) Hematocrit [37.5-49 g/dl]

**Medication use for exclusion:

1. Diuretics
2. Steroids (oral): daily oral any dose within 1 month of study, except OCP as noted below
3. Opiates: any use within 1 month of study
4. Anti-lipid medications that affect GI or renal function (ie. Fibrates)
5. Hyperglycemia medications other than metformin (ie. insulin, SGLT2 inhibitor, α-glucosidase inhibitor)
6. Psychiatric that affect metabolism/renal function (anti-psychotics, lithium)
7. Biologic/immune modulators (ie. RA, psoriasis, other rheumatologic/hematologic active disease)
8. Anti-coagulants (coumadin, heparin, Eliquis, etc.)
9. HIV/HAART, etc. (dyslipidemic)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Double

Number of Arms

6

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: 1) Beef then half beef and half pinto bean then pinto bean	Other: Controlled feeding study of beef and/or pinto beans; Crossover feeding study of three, 7-day feeding periods with plant and/or animal proteins (beef, pinto beans, and half beef/half pinto beans) completed in random order.
Experimental: 2) Half pinto bean and half beef then pinto bean then beef	Other: Controlled feeding study of beef and/or pinto beans; Crossover feeding study of three, 7-day feeding periods with plant and/or animal proteins (beef, pinto beans, and half beef/half pinto beans) completed in random order.
Experimental: 3) Pinto Bean then Beef then half pinto bean and half beef	Other: Controlled feeding study of beef and/or pinto beans; Crossover feeding study of three, 7-day feeding periods with plant and/or animal proteins (beef, pinto beans, and half beef/half pinto beans) completed in random order.
Experimental: 4) Egg then half Egg and half black bean then black bean	Other: Controlled feeding study of eggs and/or black beans; Crossover feeding study of three, 7-day feeding periods with plant and/or animal proteins (eggs, black beans, and half eggs/half black beans) completed in random order.
Experimental: 5) Half egg and half black bean, then black bean then egg	Other: Controlled feeding study of eggs and/or black beans; Crossover feeding study of three, 7-day feeding periods with plant and/or animal proteins (eggs, black beans, and half eggs/half black beans) completed in random order.
Experimental: 6) Black bean then egg then half black bean and half egg	Other: Controlled feeding study of eggs and/or black beans; Crossover feeding study of three, 7-day feeding periods with plant and/or animal proteins (eggs, black beans, and half eggs/half black beans) completed in random order.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Mean metabolite concentration at Day 7 for Beef	Day 7
Mean metabolite concentration at Day 7 for Pinto Bean	Day 7
Mean area under the curve of 24-hour metabolite concentration for Beef	0-24 hours
Mean area under the curve of 24-hour metabolite concentration for Pinto Bean	0-24 hours
Mean metabolite concentration at Day 7 for Egg	Day 7
Mean metabolite concentration at Day 7 for Black Bean	Day 7
Mean area under the curve of 24-hour metabolite concentration for Egg	0-24 hours
Mean area under the curve of 24-hour metabolite concentration for Black Bean	0-24 hours

Collaborators and Investigators

• Sponsor: Marian Neuhouser
• Collaborators: Duke University; University of Washington; University of Nebraska; United States Department of Agriculture - National Institute of Food and Agriculture (USDA-NIFA)
• Investigators: Principal Investigator: Marian L. Neuhouser, PhD, RD, Fred Hutchinson Cancer Center; Principal Investigator: Johanna W. Lampe, PhD, RD, Fred Hutchinson Cancer Center

Publications and helpful links

General Publications

• Chakraborty H, Sun Q, Bhupathiraju SN, Schenk JM, Mishchuk DO, Bain JR, He X, Sun J, Harnly J, Simmons W, Raftery D, Liang L, Newman JW, Fiehn O, Clish CB, Lampe JW, Bennett BJ, Navarro SL, Wang Y, Zheng C, Mossavar-Rahmani Y, McCullough ML, Huang Y, Shojaie A, Zhu W, Djukovic D, Sacks F, Williams J, Steinberg FM, Adams SH, Hu FB, Neuhouser ML, Slupsky CM, Maruvada P. The Dietary Biomarkers Development Consortium: An Initiative for Discovery and Validation of Dietary Biomarkers for Precision Nutrition. Curr Dev Nutr. 2025 Apr 5;9(5):107435. doi: 10.1016/j.cdnut.2025.107435. eCollection 2025 May.

Study record dates

Study Major Dates

• Study Start (Actual): March 2, 2023
• Primary Completion (Actual): April 17, 2025
• Study Completion (Actual): April 17, 2025

Study Registration Dates

• First Submitted: October 12, 2022
• First Submitted That Met QC Criteria: October 12, 2022
• First Posted (Actual): October 14, 2022

Study Record Updates

• Last Update Posted (Actual): February 20, 2026
• Last Update Submitted That Met QC Criteria: February 18, 2026
• Last Verified: February 1, 2026

More Information

Terms related to this study

• Keywords: Pharmacokinetics; Metabolomics; Diet; Eggs; Healthy Diet; Red meat; Pinto beans; Black beans
• Other Study ID Numbers: RG1121654; USDA-NIFA 2022-67017-38475 (Other Grant/Funding Number: United States Department of Agriculture - National Institute of Food and Agriculture (USDA-NIFA))

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: We will comply with the NIH Data Sharing Policy. This trial will be registered at ClinicalTrials.gov. We will publish results in peer-reviewed journals. Data generated from this study will be sent to the Data Coordinating Center Center (DCC) at Duke University. The DCC will make study data available to other Consortium members (University of California Davis, Harvard University) in accordance with best practices for data safety and accessibility. Participants' data may be stored and shared for future research without additional informed consent if identifiable private information is removed. Use of participant data may result in commercial profit; however, participants will not be compensated for the use of their data other than what is described in the consent form. The final de-identified study data and results will be made publicly available, in accordance with NIH data sharing policies.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP; ICF

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No