A Trial of CP101 for the Prevention of Recurrent CDI (PRISM4) (PRISM4)
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ClinicalTrials.gov Identifier: NCT05153499 |
Recruitment Status :
Active, not recruiting
First Posted : December 10, 2021
Last Update Posted : January 26, 2023
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Condition or disease | Intervention/treatment | Phase |
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Recurrent C. Difficile Infection | Biological: CP101 Other: Placebo | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 19 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Prevention |
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) |
Actual Study Start Date : | November 15, 2021 |
Estimated Primary Completion Date : | January 2024 |
Estimated Study Completion Date : | October 2024 |
Arm | Intervention/treatment |
---|---|
Active Comparator: CP101 |
Biological: CP101
CP101 is an investigational microbiome therapeutic designed to deliver a complete and functional microbiome to durably repair intestinal dysbiosis, which is being evaluated for the prevention of recurrent CDI. |
Placebo Comparator: Placebo |
Other: Placebo
Placebo |
- CDI recurrence through week 8 as evidenced by positive toxin EIA or positive toxigenic culture [ Time Frame: Week 8 ]
- Treatment emergent adverse events through week 8 as measure by number of events [ Time Frame: Week 8 ]
- CDI recurrence through week 24 as evidenced by positive toxin EIA or positive toxigenic culture [ Time Frame: Week 24 ]
- Treatment emergent adverse events through week 24 as measure by number of events [ Time Frame: Week 24 ]
- Improvement of intestinal microbiome diversity at week 1 as determined by 16S ribosomal ribonucleic acid (rRNA) gene amplicon sequencing [ Time Frame: Week 1 ]

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Ability to provide written informed consent
- Men or women over 18 years of age or older
- Current diagnosis of a recurrence of non-severe, non-complicated CDI
- Subject has a clinical response to standard-of-care CDI antibiotics for the most recent CDI episode
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History of recurrent CDI defined as:
- ≥ 3 episodes of CDI, with 2 episodes occurring within the previous 6 months (inclusive of the current episode); OR
- Patients with a history of 2 episodes of CDI occurring within the previous 6 months (inclusive of the current episode) may be eligible if 65 years of age or older.
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For the Qualifying CDI episode, the following criteria must be satisfied:
- History of diarrhea (> 3 unformed stools per day) for 2 or more consecutive days that is clinically consistent with CDI. AND
- Documented positive stool test by local laboratory for toxigenic C. difficile (toxin enzyme immunoassay [EIA] or polymerase chain reaction [PCR]-based testing) for the current CDI episode and within 45 days prior to Randomization. AND
- Received a course of SOC CDI antibiotics for the most recent CDI episode (for 10 to 21 days, with exact duration, antibiotic type, and dose at the discretion of the Investigator). AND
- Demonstrated an adequate clinical response, defined as ≤ 3 unformed stools in 24 hours for 2 or more consecutive days during SOC CDI antibiotics prior to Randomization.
Exclusion Criteria:
- Known stool sample testing positive for enteric pathogen(s) (e.g., Salmonella, Shigella, diarrhoeagenic E. coli, Campylobacter, Giardia) within 28 days prior to Screening
- Pregnant, breast-feeding, or planning to become pregnant during the trial
- Historical or current diagnosis of inflammatory bowel disease
- Recent diagnosis (<6 months prior to screening) of diarrhea-predominant irritable bowel syndrome (post-infection or non-related to an enteric infection)
- Initiation of any systemic cancer treatment (e.g., chemotherapy, radiotherapy, biologic, immunotherapy, others) for active malignancy
- Major intra-abdominal surgery (e.g., bowel resection)
- Known primary or secondary immunodeficiency

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05153499

Responsible Party: | Finch Research and Development LLC. |
ClinicalTrials.gov Identifier: | NCT05153499 |
Other Study ID Numbers: |
FIN-CDI-301 |
First Posted: | December 10, 2021 Key Record Dates |
Last Update Posted: | January 26, 2023 |
Last Verified: | January 2023 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
C. difficile infection recurrent Clostridium difficile infection Clostriodioides difficile infection recurrent C. diff infection multiple recurrent C. diff infection CDI |
c. diff microbiota transplantation FMT Fecal microbiota transplantation Fecal microbiota transplant Fecal transplant |
Infections Communicable Diseases Recurrence Disease Attributes Pathologic Processes |