NCT05266807

Brief Summary

The clinical trial aims to evaluate the efficacy of fecal microbiota transplantation (FMT) after standard of care treatment (either vancomycin or fidaxomicin) vs the pragmatic use of standard of care treatment (either vancomycin or fidaxomicin) in severe and non-severe first episode and first recurrence of Clostridioides difficile infection (CDI). Experimental arm: antibiotic treatment (vancomycin or fidaxomicin as initially prescribed per SoC continued for 10 days) followed by FMT by oral capsules (one FMT, i.e. 20 FMT capsules given on 2 consecutive days, and followed by a 2nd FMT in severe CDI). Control Arm: vancomycin or fidaxomicin as initially prescribed per SoC continued for 10 days.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
220

participants targeted

Target at P25-P50 for phase_3

Timeline
21mo left

Started Mar 2023

Longer than P75 for phase_3

Geographic Reach
1 country

7 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress64%
Mar 2023Jan 2028

First Submitted

Initial submission to the registry

February 18, 2022

Completed
14 days until next milestone

First Posted

Study publicly available on registry

March 4, 2022

Completed
1 year until next milestone

Study Start

First participant enrolled

March 15, 2023

Completed
4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2027

Expected
10 months until next milestone

Study Completion

Last participant's last visit for all outcomes

January 31, 2028

Last Updated

September 18, 2025

Status Verified

September 1, 2025

Enrollment Period

4 years

First QC Date

February 18, 2022

Last Update Submit

September 12, 2025

Conditions

Keywords

Clostridioides difficileClostridium difficileFecal Microbiota TransplantationVancomycinFidaxomicin

Outcome Measures

Primary Outcomes (1)

  • Sustained clinical cure rate

    Absence of CDI recurrence through 8 weeks after study treatment completion

    8 weeks after study treatment completion

Secondary Outcomes (7)

  • Treatment failure

    Before 4 weeks and at 5-8 weeks after study treatment completion

  • CDI new episodes

    between 8 weeks and 12 months after study treatment completion

  • Long-term clinical cure

    6 and 12 months after study treatment completion

  • Recurrence-free survival rate

    12 months after study treatment completion

  • Overall survival

    12 months after study treatment completion

  • +2 more secondary outcomes

Study Arms (2)

SoC + oral Fecal Microbiota Transplantation

EXPERIMENTAL

Antibiotic (vancomycin 125 mg 4 times daily or fidaxomicin 200 mg 2 times daily, as initially prescribed per SoC) for 10 days, followed 12h to 4 days later by one oral FMT (20 capsules administered at D1 and 20 capsules at D2), and a second oral FMT if CDI is severe.

Drug: oral capsulized Fecal Microbiota TransplantationDrug: Vancomycin or Fidaxomicin

SoC

ACTIVE COMPARATOR

Antibiotic (vancomycin 125 mg 4 times daily or fidaxomicin 200 mg 2 times daily, as initially prescribed per SoC) for 10 days.

Drug: Vancomycin or Fidaxomicin

Interventions

FMT will be administered per os in the form of capsules containing faeces from a healthy donor. Capsules are manufactured at the CHUV pharmacy (University Hospital of Lausanne, Switzerland)

SoC + oral Fecal Microbiota Transplantation

Vancomycin or Fidaxomicin per os as initially prescribed per SoC

SoCSoC + oral Fecal Microbiota Transplantation

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Adults (≥18 years old) at the time of informed consent
  • Informed consent signature
  • Medical record documentation of CDI defined as:
  • a. A first CDI episode associated with risks factors for recurrence, defined as: i. No CDI episode within the last 8 weeks ii. Current combination of CDI signs and symptoms, confirmed by medical record documentation of microbiological evidence of C. difficile toxin and C. difficile in stools shown by a CDI PCR positive test with Ct \< 25 or a toxin A/B EIA positive test and without reasonable evidence of another cause of diarrhea, iii. Presenting at least one of the following risks factors for CDI recurrence:
  • age \>65 years-old,
  • hospitalization within the last 3 months,
  • use of proton pump inhibitors (PPI) within the last 3 months,
  • Charlson comorbidity index (CCI) \>2,
  • living in long term facility,
  • healthcare- associated CDI (see definition in section 7),
  • severe CDI episode (see definitions in section 6.1.2),
  • immunocompromised patient (except severely immunocompromised according to definitions in section 7.1),
  • history of prior CDI episode(s) (more than 8 weeks ago). OR b. A first CDI recurrence, defined as: i. Previous episode of treated and cured CDI within the last 8 weeks confirmed by medical record documentation of a clinical picture of CDI combined with a positive microbiological CDI test performed according to CDI diagnosis ESCMID guidelines ii. Current combination of CDI signs and symptoms, confirmed by medical record documentation of microbiological evidence of C. difficile toxin and C. difficile in stools shown by a CDI PCR positive test with Ct \< 25 or a toxin A/B EIA positive test , and without reasonable evidence of another cause of diarrhea..
  • No multiple episodes (no more than 2 CDI episodes) within 3 last months.
  • Already taking since less than 10 days or will start a course of antibiotics (vancomycin or fidaxomicin) to control recurrent CDI symptoms at the time of screening.
  • +1 more criteria

You may not qualify if:

  • Severe-complicated CDI if at least one of the following signs or symptoms are:
  • ongoing at time of screening and related to CDI: hypotension, septic shock, elevated serum lactate, ileus,
  • or were present at any time of the CDI episode and related to CDI: toxic megacolon, bowel perforation, or any fulminant course of disease (i.e. rapid deterioration of the patient.
  • Prior FMT within 6 months of randomization,
  • Prior colectomy, colostomy, ileostomy, or gastrectomy
  • Metronidazole already given for the treatment of the current CDI for more than 3 days,
  • Need for continued non-anti-CDI systemic antibiotics (should be stopped at randomization at the latest), except prophylactic doses of trimethoprim/sulfamethoxazole,
  • Anticipated indication for antibiotics treatment (for a non-CDI reason) in the next 8 weeks except prophylactic doses of trimethoprim/sulfamethoxazole
  • Other causes of chronic or acute diarrhea beyond CDI (chronic diarrhea is defined as loose/watery stools, which occur three or more times within 24 hours and last for 4 or more weeks)
  • Inflammatory bowel disease,
  • Patients with swallowing disorders, Zenker's diverticulum, gastroparesis, or prior small bowel obstruction,
  • Known hypersensitivity to vancomycin or fidaxomicin,
  • Pregnant/lactating women,
  • Estimated patient's life expectancy of less than 10 weeks,
  • Inability to follow protocol study procedures,
  • +4 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (7)

Universitätsspital

Basel, Basel, 4031, Switzerland

RECRUITING

Inselspital Bern

Bern, Canton of Bern, 3010, Switzerland

RECRUITING

HFR Fribourg - Hôpital cantonal

Fribourg, Canton of Fribourg, 1708, Switzerland

RECRUITING

Kantonsspital St Gallen, HOCH

Sankt Gallen, Canton of St. Gallen, 9007, Switzerland

RECRUITING

CHUV

Lausanne, Canton of Vaud, 1011, Switzerland

RECRUITING

Universitätsspital Zürich

Zurich, Canton of Zurich, 8091, Switzerland

RECRUITING

Institut central des hôpitaux

Sion, Valais, 1950, Switzerland

RECRUITING

MeSH Terms

Conditions

Clostridium Infections

Interventions

VancomycinFidaxomicin

Condition Hierarchy (Ancestors)

Gram-Positive Bacterial InfectionsBacterial InfectionsBacterial Infections and MycosesInfections

Intervention Hierarchy (Ancestors)

GlycopeptidesGlycoconjugatesCarbohydratesPeptidesAmino Acids, Peptides, and ProteinsMacrolidesLactonesOrganic ChemicalsPolyketidesMacrocyclic CompoundsPolycyclic Compounds

Study Officials

  • Benoit Guery

    CHUV

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Benoit Guery, MD

CONTACT

Project Manager

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Randomized, Controlled, Open-label, Multicenter
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Head physician

Study Record Dates

First Submitted

February 18, 2022

First Posted

March 4, 2022

Study Start

March 15, 2023

Primary Completion (Estimated)

April 1, 2027

Study Completion (Estimated)

January 31, 2028

Last Updated

September 18, 2025

Record last verified: 2025-09

Data Sharing

IPD Sharing
Will not share

Locations