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Bezlotoxumab Versus FMT for Multiple Recurrent CDI

New Treatment Strategy for Patients With Multiple Recurrent Clostridioides Difficile Infection With Bezlotoxumab as First Option

Status
Withdrawn
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05077085
Acronym
BSTEP
Enrollment
0
Registered
2021-10-13
Start date
2022-01-31
Completion date
2024-12-31
Last updated
2023-03-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Clostridium Infections, Clostridioides Difficile, Enterocolitis, Pseudomembranous

Brief summary

The objective of this trial is to investigate whether a treatment strategy offering bezlotoxumab before FMT in patients suffering from multiple recurrent CDI results in equal efficacy compared with a treatment strategy with initial FMT. Strategy A includes bezlotoxumab as ancillary treatment as first option, and FMT in case of failure. Option B includes FMT as ancillary treatment as first option, and antibiotic treatment with fidaxomicin in case of failure. A secondary objective is to provide a point estimate of recurrence after bezlotoxumab for the treatment of multiple recurrent CDI.

Interventions

single intravenous infusion of bezlotoxumab 10 mg/kg

PROCEDUREFecal Microbiota Transplantation (FMT)

single infusion of 198 cc fecal suspension (derived from 60g donor feces) via duodenal tube or coloscopy

14 days vancomycin oral 125mg QID (250mg QID when 125mg not available)

Sponsors

OLVG
CollaboratorNETWORK
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
CollaboratorOTHER
Erasmus Medical Center
CollaboratorOTHER
Medical Center Haaglanden
CollaboratorOTHER
Leiden University Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Multicenter open label randomized controlled trial

Eligibility

Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
No

Inclusion criteria

* 18-90 years old * diarrhea (3 or more unformed stools per 24h for two consecutive days; or \>= 8 unformed stools per 48h) XML File Identifier: KqQEbBLRYEZjGgsIl5GcI+NXCyM= Page 10/22 * positive PCR test for toxin A/B genes and/or positive toxin EIA for current and previous episodes (low PCR cycle threshold value when only PCR performed) * a minimum of two prior CDI episodes * previous episode is maximum of 3 months prior to the current episode * the current episode responds well to Standard of Care treatment (vancomycin or fidaxomicin orally). * Assessment of the severity of the disease will be performed according to the ESCMID recommendations. * Both mild and severe CDI will be included

Exclusion criteria

* Severe complicated CDI, i.e presence of: hypotension, septic shock, elevated serum lactate, ileus, toxic megacolon, bowel perforation, or any fulminant course of disease. * ICU admission for underlying disease * pregnancy or current desire for pregnancy * breastfeeding * (prolonged) use of antibiotics (other than for treatment of CDI) during the study period or directly after the intervention * previous use of bezlotoxumab or fecal microbiota transplantation * a history of underlying congestive heart failure (potential safety signal phase-III trail bezlotoxumab). * Diagnosis of inflammatory bowel disease in medical history.

Design outcomes

Primary

MeasureTime frameDescription
Global cure of the treatment strategy12 weeks (after rescue therapy if applicable)Defined as cure without relapse of CDI within 12 weeks after completion of the treatment strategy in the study arm, i.e. after completion of secondary treatment in case of failure on initial treatment.

Secondary

MeasureTime frameDescription
Post-treatment IBS-like symptoms12 weeksDevelopment of post-treatment irritable bowel syndrome like symptoms associated with bezlotoxumab treatment or FMT treatment
Fecal microbiota (16S) alfa- and beta-diversityPre-treatment and 3 and 12 weeksAs assessed by 16S rRNA amplicon sequencing
Cost-effectiveness12 weeksCosts per cured patient (global and sustained cure) and costs per QALY gained, using the EQ-5D-5L health questionaire that assesses five domains by 5 point scale, e.g. no/slight/moderate/severe/extreme impairment and a visual analogue 0-100 scale of health rating, higher is better)
Initial cure after treatment with bezlotoxumab or FMT2 days after end of treatmentDefined as cure after completion of the primary CDI treatment in the study arm. Initial cure is assessed at day 2 after end of treatment (EOT).
Sustained cure after initial treatment with bezlotoxumab or FMT12 weeksSustained cure is defined as cure without relapse of CDI within 12 weeks after completion of the initial treatment.
Adverse events12 weeksThroughout the entire study all adverse events will be noted. After the final study procedure of the last patient, all adverse events will be categorized: 1. Most likely related to ancillary CDI treatment (bezlotoxumab or FMT) 2. May be related to ancillary CDI treatment 3. Not related to ancillary CDI treatment
Recurrence after initial treatment with bezlotoxumab or FMT12 weeksDefined as CDI relapse within 12 weeks after initial cure
Duration of hospitalization12 weeks
Rate of antibiotic use12 weeks
Eradication of toxigenic C. difficile3 and 12 weeksAs assessed by PCR

Other

MeasureTime frameDescription
Rate of patients with improved defecation pattern12 weeksAs assessed by personal diary
Patient wellbeingPre-treatment and 12 weeksAs assessed by questionnaire, that includes: 1. self rated health - 5 point scale, higher is worse outcome 2. happiness - 7 points scale, higher is worse outcome 3. optimism - 6 items 4. patient health questionnaire PHQ-9 - 9 items with 4 point scale, higher is worse outcome 5. hospital anxiety and depression scale HADS - 14 items

Countries

Netherlands

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026