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Showing 1–24 of 61 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Clostridioides Difficile Infection Recurrence Clear all
Not listed Phase 1 Interventional

Fecal Transplant for Pediatric Patients Who Have Recurrent C-diff Infection

NCT02134392
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Fecal Microbiota Transplantation
Biological
Lead sponsor
Jonathan Gisser
Other
Eligibility
2 Years to 21 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Safety and Efficacy of FMT in Individuals With One or More Recurrences of Clostridium Difficile Associated Disease (CDAD)

NCT03548051
View directory record Official record
Conditions
Clostridial Infection, Dysbiosis, Probiotic Therapy
Interventions
Fecal Microbiota Transplantation (FMT), Saline
Procedure · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
3
States / cities
Decatur, Georgia • Durham, North Carolina • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 1, 2022 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

Fecal Microbiota Transplantation for C. Difficile Infection in Solid Organ Transplant Recipients

NCT03617445
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
FMT oral capsule, Oral Vancomycin, FMT oral placebo, Oral Vancomycin placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
5
States / cities
Chicago, Illinois • Indianapolis, Indiana • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

Safety of FMT: OpenBiome Outcomes and Longitudinal Follow-up (STOOL) for Recurrent Clostridium Difficile Infection

NCT02403622
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Fecal Microbiota Preparation
Drug
Lead sponsor
Microbiome Health Research Institute
Other
Eligibility
18 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
4
States / cities
Naperville, Illinois • Indianapolis, Indiana • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 22, 2021 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

PROCLAIM -- Misoprostol in the Prevention of Recurrent CDI Prevent Recurrence of Clostridium Difficile Infection With Misoprostol

NCT03617172
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Misoprostol 100Mcg Tab, Placebo
Drug · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
3
States / cities
St Louis, Missouri • Chapel Hill, North Carolina • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 29, 2022 · Synced Sep 14, 2026, 2:14 PM EDT
Completed No phase listed Observational

Real-world Evaluation of Bezlotoxumab for the Management of Clostridioides Difficile Infection

NCT04317963
View directory record Official record
Conditions
Clostridium Difficile Infection, Clostridium Difficile Infection Recurrence
Interventions
Bezlotoxumab, Standard CDI treatment
Biological · Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 27, 2023 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy Study of VP20621 for Prevention of Recurrent Clostridium Difficile Infection

NCT01259726
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
VP20621, Placebo
Biological · Other
Lead sponsor
Shire
Industry
Eligibility
18 Years and older
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
42
States / cities
Modesto, California • Palm Desert, California • Sacramento, California + 39 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Microbiota Restoration Therapy for Recurrent Clostridium Difficile Infection

NCT02299570
View directory record Official record
Conditions
Enterocolitis Clostridium Difficile Recurrent
Interventions
RBX2660 (microbiota suspension), Placebo
Biological · Other
Lead sponsor
Rebiotix Inc.
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
19
States / cities
Phoenix, Arizona • Aurora, Colorado • Jacksonville, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2021 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 1 Interventional

A Study of ART24 in Subjects Recently Cured of a Clostridioides Difficile Infection (CDI)

NCT04891965
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
ART24, Placebo
Biological · Drug
Lead sponsor
Adiso Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
13
States / cities
Palm Springs, California • Clearwater, Florida • Doral, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2022 · Synced Sep 14, 2026, 2:14 PM EDT
Completed No phase listed Observational

Fecal Microbiota Transplant for Recurrent Clostridium Difficile Infection

NCT02326636
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Fecal Microbial Transplantation
Biological
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 100 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Microbiota Restoration Therapy for Recurrent Clostridium Difficile-associated Diarrhea

NCT01925417
View directory record Official record
Conditions
Recurrent Clostridium Difficile Infection
Interventions
RBX2660 (microbiota suspension)
Biological
Lead sponsor
Rebiotix Inc.
Industry
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
13
States / cities
Phoenix, Arizona • Denver, Colorado • Jacksonville, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 12, 2019 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 3 Interventional Results available

A Multi-center, Single-arm Trial Exploring the Safety and Clinical Effectiveness of RBX2660 Administered by Colonoscopy to Adults With Recurrent Clostridioides Difficile Infection

NCT05831189
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
RBX2660
Drug
Lead sponsor
Ferring Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
12
States / cities
North Little Rock, Arkansas • Camarillo, California • Hamden, Connecticut + 9 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 14, 2026, 2:14 PM EDT
Recruiting Phase 2 Interventional

Prevention of Recurrent C. Difficile Infection Study With AZD5148 Monoclonal Antibody

NCT07285213
View directory record Official record
Conditions
Clostridioides Difficile Infection
Interventions
AZD5148, Placebo
Drug · Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
43
States / cities
Phoenix, Arizona • Chula Vista, California • Sacramento, California + 39 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 1 Interventional

Treatment of Recurrent Clostridium Difficile Infection With RBX7455

NCT02981316
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
RBX7455
Biological
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 7, 2020 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

ICON-2: FMT and Bezlotoxumab Compared to FMT and Placebo for Patients With IBD and CDI

NCT03829475
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Clostridium Difficile Infection
Interventions
Bezlotoxumab, Placebo, Fecal Microbiota Transplantation
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 4 Interventional

Bezlotoxumab (BEZLO) In Addition To Standard Of Care (SOC) Vancomycin For The Treatment of Multi-Recurrent Clostridium Difficile Infection

NCT03880539
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
bezlotoxumab, Vancomycin Oral
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 25, 2022 · Synced Sep 14, 2026, 2:14 PM EDT
Completed No phase listed Observational

REBYOTA™ Prospective Registry

NCT05835219
View directory record Official record
Conditions
Recurrence of Clostridium Difficile Infection
Interventions
REBYOTA™
Drug
Lead sponsor
Ferring Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
42
States / cities
Chandler, Arizona • Chula Vista, California • Murrieta, California + 36 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Efficacy of Oral Vancomycin Prophylaxis for Prevention of Recurrent Clostridium Difficile Infection

NCT03462459
View directory record Official record
Conditions
Recurrent Clostridium Difficile Infection, Clostridium Difficile Infection, CDI, C.Difficile Diarrhea, C. Diff Colitis, C.Difficile Colitis
Interventions
Vancomycin, Placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 4 Interventional Results available

Optimal Treatment for Recurrent Clostridium Difficile

NCT02667418
View directory record Official record
Conditions
Clostridium, Difficile, Fidaxomicin, Vancomycin
Interventions
Fidaxomicin, Vancomycin with Taper/Pulse, Vancomycin
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
308 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
32
States / cities
Phoenix, Arizona • Tucson, Arizona • Little Rock, Arkansas + 28 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 14, 2026, 2:14 PM EDT
Recruiting No phase listed Observational

C. Difficile Toxin Levels in Stool From Healthy Individuals Following Standard of Care Antibiotic Treatment for CDI.

NCT07250724
View directory record Official record
Conditions
Clostridioides Difficile Infection Recurrence
Interventions
Participants that are undergoing standard of care antibiotic treatment for their second C. Diff infection will be followed for 8 weeks after completing antibiotic treatment.
Other
Lead sponsor
Bactolife A/S
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
4
States / cities
Atlanta, Georgia • Royal Oak, Michigan • Rochester, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 14, 2026, 2:14 PM EDT
Completed Phase 1Phase 2 Interventional Results available

The ICON Study: Outcomes After FMT for Patients With IBD and CDI

NCT03106844
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Clostridium Difficile Infection
Interventions
Fecal Microbiota Transplantation
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 9, 2021 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

Dose Ranging Study of the Safety and Efficacy of Orally Administered Lyophilized Fecal Microbiota Product (PRIM-DJ2727) for the Treatment of Recurrent Clostridium Difficile Infection (CDI)

NCT03298048
View directory record Official record
Conditions
Recurrent C. Difficile Infection
Interventions
Low fecal microbiota dose, Mid fecal microbiota dose, High fecal microbiota dose
Biological
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 100 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 5, 2020 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

FMT Versus Antimicrobials for Initial Treatment of Recurrent CDI

NCT02255305
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
FMT, Antimicrobials
Biological · Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 14, 2026, 2:14 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Microbiota or Placebo After Antimicrobial Therapy for Recurrent C. Difficile at Home (MATCH)

NCT03005379
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Fecal Microbiota Therapy (FMT), Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 10, 2024 · Synced Sep 14, 2026, 2:14 PM EDT