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Oral Vancomycin Vs Placebo in the Prevention of Recurrence of Clostridioides Difficile's Infection

Phase III,randomized,double-blinded Clinical Trial to Evaluate the Effectiveness and Safety of Oral Vancomycin Vs Placebo in the Prevention of Recurrence of C.difficile Infection in Patients Under Treatment with Systemic Antibiotic Therapy

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05320068
Acronym
PREVAN
Enrollment
24
Registered
2022-04-11
Start date
2022-08-02
Completion date
2024-03-01
Last updated
2024-12-12

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

Conditions

Clostridioides Difficile Infection

Keywords

Vancomycin oral capsules

Brief summary

A phase III randomized clinical trial in proportion 2:1 in favor of oral vancomycin (experimental treatment), multicentric, national, double-blinded, controlled with placebo. The main objective is to evaluate the effectiveness of treatment with oral vancomycin to reduce the incidence of Clostridioides difficile infection (CDI) in patients who suffered previous CDI and who need further hospitalization and treatment with systemic antibiotic therapy in the 90 days after the first CDI.

Detailed description

As secondary objectives the investigators intend to: * Evaluate the effectiveness of the treatment with oral vancomycin as part of the prophylaxis arsenal to prevent ICD in patients with previous ICD episodes stratified by the number of previous recurrences. * Compare the severity of recurrences in both study groups. * Compare the effectiveness of the treatment with oral vancomycin depending on the type of systemic antibiotic therapy prescribed. * Evaluate the tolerance and the safety of the treatment with oral vancomycin in terms of secondary effects and difficulty in therapeutic compliance. * Evaluate if the treatment with oral vancomycin has an effect in diminishing the severity of ICD recurrences.

Interventions

A blinded capsule that contains 125mg of vancomycin every 6 hours during 10 days.

DRUGPlacebo

A blinded capsule that contains no vancomycin every 6 hours during 10 days.

Sponsors

Instituto de Salud Carlos III
CollaboratorOTHER_GOV
Julia Orígüen
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Caregiver, Investigator)

Intervention model description

Proportion 2:1 in favour to the intervention arm

Eligibility

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

Inclusion criteria

* Age equal or superior to 18 years * Previous history of Clostridioides difficile infection in the 90 days before the study enrolment * Need for hospitalization and need of antibiotic therapy * Signature of informed consent

Exclusion criteria

* Woman of childbearing age, pregnant woman, or breastfeeding woman * Hypersensitivity to vancomycin * Inability to comply with study protocol * Critically ill condition or life expectancy less than 30 days * Patients with diagnosed inflammatory bowel disease or with any conditions that produce chronic diarrhea * Fulfilment of the criteria for diarrhea or diagnosis of CDI at the time of assessment for eligibility or in the previous 3 days * Therapy with oral vancomycin or any other agent with activity against C. difficile for \>48 hours in the previous 3 days;. * Prophylaxis with oral vancomycin or any other agent with activity against C. difficile within the 70 days before the assessment for eligibility * Systemic antibiotic therapy for 72 hours or more before the recruitment * Ongoing enrolment in another RCT evaluating the effectiveness of other drugs * Estimated use of systemic antibiotic therapy for more than 4 weeks

Design outcomes

Primary

MeasureTime frameDescription
Effectiveness of treatment with oral vancomycin in the prevention of Clostridioides difficile60 days after the beginning of the interventionAbsolute difference in the rate of C. difficile infection recurrences with vancomycin Vs placebo.

Secondary

MeasureTime frameDescription
Effectiveness of treatment with oral vancomycin according to the number of previous recurrences60 days after the beginning of the interventionThe absolute difference in the rate of C. difficile infection recurrences with vancomycin vs placebo stratified by index CDI episode (first episode or recurrence)
Effectiveness of treatment with oral vancomycin in diminishing the severity of the recurrence60 days after the beginning of the interventionThe absolute difference in the rate of severe C. difficile infection recurrences with vancomycin vs placebo
Effectiveness of treatment with oral vancomycin depending on antibiotic therapy60 days after the beginning of the interventionThe absolute difference in the rate of C. difficile infection recurrences with vancomycin vs placebo stratified by the type of systemic antibiotic therapy prescribed.
Tolerance and safety of treatment with oral vancomycin60 days after the beginning of the interventionRate of major adverse events and drug-related adverse events.

Countries

Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026