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Showing 25–42 of 18 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Infant Gut Microbiome Clear all
Completed No phase listed Observational Accepts healthy volunteers

Alteration of Stool Microbiota in Preterm Infants With Anemia

NCT03554278
View directory record Official record
Conditions
Anemia, Neonatal, Necrotizing Enterocolitis, Dysbiosis
Interventions
Not listed
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
7 Days to 30 Days
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Jul 23, 2026, 5:37 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Developmental Impacts of Microplastics Exposure in Early Life

NCT06107933
View directory record Official record
Conditions
Infant Development, Breast Feeding, Environmental Exposure
Interventions
Observational only
Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Jul 23, 2026, 5:37 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Enfamil NeuroPro Study

NCT06059209
View directory record Official record
Conditions
Infant Development, Infant ALL
Interventions
Enfamil NeuroPro, Enfamil Infant
Dietary Supplement
Lead sponsor
University of Arizona
Other
Eligibility
0 Months to 4 Months
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Jul 23, 2026, 5:37 AM EDT
Completed Not applicable Interventional

Probiotics in Infants With Cyanotic Congenital Heart Disease

NCT01018472
View directory record Official record
Conditions
Cyanotic Congenital Heart Disease
Interventions
Bifidobacterium infantis, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
Up to 4 Months
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 1, 2014 · Synced Jul 23, 2026, 5:37 AM EDT
Completed Phase 2 Interventional Results available

Antibiotic "Dysbiosis" in Preterm Infants

NCT02784821
View directory record Official record
Conditions
Enterocolitis, Necrotizing, Bacteremia, Bronchopulmonary Dysplasia, Intraventricular Hemorrhage, Periventricular Leukomalacia, Chronic Lung Disease, Ileal Perforation
Interventions
Antibiotic, Gastric fluid, Breast milk, Stool samples, Antibiotics
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
23 Weeks to 33 Weeks
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 4, 2024 · Synced Jul 23, 2026, 5:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

GI Tract Biomarkers in Infants With Different Diets

NCT03751137
View directory record Official record
Conditions
Obesity, Childhood
Interventions
Not listed
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
6 Weeks to 3 Months
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2025
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Jun 3, 2025 · Synced Jul 23, 2026, 5:37 AM EDT
Active, not recruiting No phase listed Observational

A Cohort Study of the Intestinal Microbiota of Premature Infants

NCT03717584
View directory record Official record
Conditions
Necrotizing Enterocolitis, Bronchopulmonary Dysplasia, Growth Failure
Interventions
Not listed
Lead sponsor
University of California, Davis
Other
Eligibility
Up to 33 Weeks
Enrollment
300 participants
Timeline
2018 – 2027
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Jul 23, 2026, 5:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The EFFECT Study: Probiotic and HMO Supplementation in Infants

NCT03994315
View directory record Official record
Conditions
Infant Gut Microbiome
Interventions
B. infantis EVC001, Lacto-N-tetraose (LNT)
Other
Lead sponsor
Evolve BioSystems, Inc.
Industry
Eligibility
Up to 60 Days
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 8, 2020 · Synced Jul 23, 2026, 5:37 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Infant Restore: Efficacy of Microbiome Analysis and Education

NCT06424691
View directory record Official record
Conditions
Microbiota, Eczema, Microbiome, Gut Microbiome
Interventions
Tailored Recommendations, Consult Call, Email Series
Dietary Supplement · Behavioral
Lead sponsor
Seeding Inc
Industry
Eligibility
0 Months to 3 Months
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fredericksburg, Texas
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Jul 23, 2026, 5:37 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

User Testing of the Evivo Screening Test

NCT03601936
View directory record Official record
Conditions
Gut Microbiome
Interventions
Evivo Infant Gut Bifidobacterium Screening Test
Device
Lead sponsor
Evolve BioSystems, Inc.
Industry
Eligibility
Up to 6 Months
Enrollment
231 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
5
States / cities
Los Angeles, California • Marietta, Georgia • Gresham, Oregon + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2019 · Synced Jul 23, 2026, 5:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Rescuing the Microbiome Effectively With Different Doses of B. Infantis in Infants

NCT03476447
View directory record Official record
Conditions
Gut Microbiome
Interventions
B. infantis EVC001, Lactose
Other
Lead sponsor
Evolve BioSystems, Inc.
Industry
Eligibility
2 Months to 4 Months
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Apr 18, 2019 · Synced Jul 23, 2026, 5:37 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Intestinal Microbiome Composition in Infants With Biliary Atresia (BA)

NCT03890536
View directory record Official record
Conditions
Biliary Atresia, Intrahepatic Cholestases, Normal Controls
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
1 Day to 2 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2032
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 8, 2025 · Synced Jul 23, 2026, 5:37 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Gastrointestinal Tract Microbiome in Healthy Term Infants Receiving Mother'S-own Breast Milk or Cow's Milk-based Infant Formulas

NCT04059666
View directory record Official record
Conditions
Gastrointestinal Microbiome
Interventions
Investigational, Control
Other
Lead sponsor
Mead Johnson Nutrition
Industry
Eligibility
7 Days to 18 Days
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
5
States / cities
Birmingham, Alabama • Altamonte Springs, Florida • Owensboro, Kentucky + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2022 · Synced Jul 23, 2026, 5:37 AM EDT
Recruiting Not applicable Interventional

Walnuts as an Infant Solid Food for Health

NCT07081698
View directory record Official record
Conditions
Gut -Microbiota, Inflammatory Markers, Infant Development
Interventions
Infant walnut intake
Other
Lead sponsor
Colorado State University
Other
Eligibility
5 Months to 5 Months
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced Jul 23, 2026, 5:37 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

INF108F in Infants With Food Protein Induced Proctocolitis

NCT05793112
View directory record Official record
Conditions
Infant Development, Gut Microbiome, Food Protein Induced Allergic Proctocolitis
Interventions
INF108F probiotic, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
1 Day to 90 Days
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Newton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Jul 23, 2026, 5:37 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Early Iron Exposure on the Gut Microbiota in Young Infants

NCT03828708
View directory record Official record
Conditions
Infant Development
Interventions
Iron in infant formula
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Day to 4 Months
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 1, 2023 · Synced Jul 23, 2026, 5:37 AM EDT
Completed Not applicable Interventional

Study of Probiotic Use After Childbirth in Relation to Emotional Well-Being

NCT04472065
View directory record Official record
Conditions
Mental Health Wellness
Interventions
Lactobacillus reuteri, Placebo
Dietary Supplement · Other
Lead sponsor
Elizabeth Austen Lawson
Other
Eligibility
18 Years and older · Female only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 24, 2023 · Synced Jul 23, 2026, 5:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

First Complementary Foods and the Infant Gastrointestinal Microbiota

NCT05492253
View directory record Official record
Conditions
Healthy Participants, Infants, Gastrointestinal Microbiota
Interventions
Infant fruit, Infant vegetable, Infant meat, Infant grain
Other
Lead sponsor
University of Delaware
Other
Eligibility
5 Months to 7 Months
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Jul 23, 2026, 5:37 AM EDT