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Terminated Phase 3 Interventional Results available

A Trial of CP101 for the Prevention of Recurrent CDI (PRISM4)

ClinicalTrials.gov ID: NCT05153499

Public ClinicalTrials.gov record NCT05153499. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 23, 2026, 6:38 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized, Double-Blind, Placebo-Controlled, Phase 3 Trial of the Efficacy, Safety, and Tolerability of a Single Oral Administration of CP101 for the Prevention of Recurrent Clostridioides Difficile Infection (CDI)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This is a Randomized, Double-Blind, Placebo-Controlled, Phase 3 Trial of the Efficacy, Safety, and Tolerability of a Single Oral Administration of CP101 for the Prevention of Recurrent Clostridioides difficile Infection (PRISM4). This Phase 3 trial will be conducted in 2 parts: a randomized, double-blind, placebo-controlled trial arm and an optional open-label treatment arm. After completing standard-of-care (SOC) CDI antibiotics for their most recent CDI recurrence, patients who meet all eligibility requirements will be randomized in a 2:1 ratio to receive either CP101 or placebo. Patients will be evaluated for CDI recurrence and safety follow-up through Week 8, the primary endpoint, as well as through Week 24. Patients who qualify may enroll into the optional open label arm if they experience CDI recurrence through week 8.

Study identification

NCT ID
NCT05153499
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 3
Enrollment
19 participants

Conditions and interventions

Interventions

Biological · Other

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Nov 15, 2021 (Actual)
Primary completion
Feb 24, 2023 (Actual)
Completion
Feb 24, 2023 (Actual)
Last update posted
Nov 13, 2023

2021 – 2023

United States locations

U.S. sites
61
U.S. states
28
U.S. cities
54
Facility City State ZIP Site status
Mayo Clinic Phoenix Arizona 85054 —
Facey Medical Foundation Mission Hills California 91345 —
Kaiser Permanente Division of Research Oakland California 94611 —
UCSF San Francisco California 94143 —
Stanford Healthcare Stanford California 94305 —
University of Colorado School of Medicine Aurora Colorado 80045 —
Bridgeport Hospital Bridgeport Connecticut 06610 —
Medical Research Center of Connecticut LLC Hamden Connecticut 06518 —
Hartford Hospital Hartford Connecticut 06106 —
Christiana Care Health System Newark Delaware 19718 —
George Washington University School of Medicine and Health Washington D.C. District of Columbia 20052 —
University of Florida Health Gainesville Florida 32608 —
Mayo Clinic Jacksonville Jacksonville Florida 32224 —
ENCORE Borland-Groover Clinical Research Jacksonville Florida 32256 —
San Marcus Research Clinic Inc Miami Florida 33014 —
Sylvester Comprehensive Cancer Center Miami Florida 33136 —
Reliant Medical Research Miami Florida 33165 —
Gastroenterology Group of Naples Naples Florida 34102 —
Theia Clinical Research, LLC St. Petersburg Florida 33709 —
Guardian Angel Research Tampa Florida 33614 —
St Joseph's Comprehensive Research Institute Tampa Florida 33614 —
Emory University Hospital Midtown Atlanta Georgia 30308 —
Snake River Research, PLLC Idaho Falls Idaho 83404 —
Metro Infectious Disease Consultants Burr Ridge Illinois 60527 —
NorthShore University HealthSystem Evanston Illinois 60077 —
Loyola University Medical Center Maywood Illinois 60153 —
Iowa Clinic Des Moines Iowa 50266 —
Ochsner Clinic Foundation New Orleans Louisiana 70121 —
Chevy Chase Clinical Research Chevy Chase Maryland 20815 —
Brigham and Womens Hospital Boston Massachusetts 02115 —
William Beaumont Hospital Farmington Hills Michigan 48336 —
Henry Ford Health System Novi Michigan 48377 —
Mayo Clinic Rochester Minnesota 55905 —
MedPharmics LLC Gulfport Mississippi 39503 —
St. Charles Clinical Research, LLC Weldon Spring Missouri 63304 —
Mercury Street Medical Group Butte Montana 59701 —
North Shore University Hospital-(Manhasset) Manhasset New York 11030 —
NYU Langone Medical Center New York New York 10016 —
Mount Sinai Hospital New York New York 10029 —
Weill Cornell Medicine New York New York 10065 —
Digiovanna Institute For Medical Education and Research North Massapequa New York 11758 —
Central New York Research Corporation Syracuse New York 13210 —
Montefiore Medical Center The Bronx New York 10467 —
University of North Carolina at Chapel Hill Chapel Hill North Carolina 27599 —
Brody School of Medicine at ECU Greenville North Carolina 27834 —
Pinehurst Medical Clinic Inc Pinehurst North Carolina 28374 —
Wake Forest Baptist Medical Center Winston-Salem North Carolina 27157 —
Gastro Health LLC Cincinnati Ohio 45219 —
TruCare Internal Medicine & Infectious Diseases DuBois Pennsylvania 15801 —
Regional GI Lancaster Pennsylvania 17601 —
University of Pennsylvania Philadelphia Pennsylvania 19104 —
Guthrie Clinic Sayre Pennsylvania 18840 —
Women's Medicine Collaborative Providence Rhode Island 02904 —
Lowcountry Infectious Diseases PA Charleston South Carolina 29414 —
Main Street Physicians Care Loris South Carolina 29569 —
Digestive Health Associates of Texas, PA Carrollton Texas 75010 —
Kelsey Seybold Clinic Houston Texas 77025 —
1960 Family Practice P.A. Houston Texas 77090 —
Southern Star Research Institute LLC San Antonio Texas 78229 —
University of Utah Salt Lake City Utah 84132 —
Infectious Diseases Associates of Central Virginia Lynchburg Virginia 24501 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 7 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05153499, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Nov 13, 2023 · Synced Oct 23, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT05153499 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →