RECRUITING

A Pilot Study Testing the Safety and Feasibility of Restorative Microbiota Therapy (RMT) in Patients With Refractory Immune-checkpoint Inhibitor-related Colitis

Conditions

Quick Navigation

Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

Immune-related colitis from immune checkpoint inhibitors (ICI) is a common adverse effect causing significant morbidity and impairment of quality of life (QoL). Steroids are the first line of treatment for severe ICI induced Immune- mediated diarrhea and colitis (IMDC). If there is no improvement in 48 to 72 hours, other immunosuppressive agents (infliximab, vedolizumab) are recommended. However, efficacy data supporting the use of immunosuppressives for steroid refractory IMDC is limited by case reports/series. Clinical trials focusing on steroid-refractory colitis are sparse. Novel treatments for IMDC outside of blanket immunosuppression are needed. There is robust evidence to suggest that gut microbial diversity and composition is associated with both ICI efficacy and toxicity. Preliminary studies have shown that pathophysiology of immune mediated colitis may be related to loss of gut microbial diversity. Recently, multiple case series have shown the utility of fecal microbiota transplant for treatment of refractory IMDC providing the proof of concept. This is a pilot randomized placebo controlled study to assess the safety and feasibility of oral restorative microbiota therapy (RMT) in patients with steroid- refractory IMDC.

Official Title

A Pilot Study Testing the Safety and Feasibility of Restorative Microbiota Therapy (RMT) in Patients With Refractory Immune-checkpoint Inhibitor-related Colitis

Quick Facts

Study Start:2025-09-23

Study Completion:2026-02-01

Study Type:Not specified

Phase:Not Applicable

Enrollment:Not specified

Status:RECRUITING

Study ID

NCT05726396

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:18 Years

Sexes Eligible for Study:ALL

Accepts Healthy Volunteers:No

Standard Ages:ADULT, OLDER_ADULT

Inclusion Criteria	Exclusion Criteria
* Localized, locally advanced or metastatic solid tumors who have received at least two doses of ICI (PD-1/PD-L1 with or without CTLA-4 inhibitor). * ICI used as a single agent, or combination or ICI in combination with other cytotoxic chemotherapy or targeted therapy for curative or palliative intent treatment. * Last ICI treatment with in 6 weeks of onset of IMDC symptoms * Meet one of the criteria for steroid refractory IMDC defined as: 1. Persistent symptoms (NCI CTCAE v 5.0 Grade ≥ 2 diarrhea) following high-dose corticosteroid therapy (≥1 mg/kg/day prednisone or equivalent) for least 48 hours or 2. Persistent symptoms (ongoing Grade ≥ 2 diarrhea per CTCAE v5.0.) following use of a one or more biologic agent (i.e. either a TNFα inhibitor or an anti-integrin) in addition to corticosteroids (with starting dose of prednisone or equivalent ≥1 mg/kg/day for at least 48 hours followed by receipt of at least one dose of either a TNFα inhibitor or an anti- integrin for at least 48 hours or 3. For patients with relapsed IMDC who have discontinued steroids: Relapsed IMDC symptoms for 24 or more hours (NCI CTCAE v 5.0 Grade ≥ 2 diarrhea) within 4 weeks of discontinuing prednisone or equivalent. These patients should have received initial high-dose corticosteroid therapy (˃1 mg/kg/day prednisone or equivalent) with subsequent taper over at least 4 weeks or 4. For patients with relapsed IMDC following the tapering of steroids Relapsed IMDC symptoms for 24 or more hours (NCI CTCAE v 5.0 Grade ≥ 2 diarrhea) while the prednisone taper is on-going. These patients should have received initial high-dose corticosteroid therapy (˃1 mg/kg/day prednisone or equivalent) with resulting clinical resolution of diarrhea (NCI CTCAE v 5.0 Grade ˂ 1 diarrhea) for at least 24 hours before relapse * Adequate organ function within 14 days prior to study enrollment defined as: 1. Hematology: Hemoglobin ≥9.0 g/dL, absolute neutrophil count (ANC) ≥1,000/mcL, platelets ≥75,000/mcL, 2. Hepatic function: Total bilirubin ≤ 1.5x upper limit of normal (ULN), AST (SGOT) and ALT (SGPT) ≤ 2.5 x institutional ULN unless liver metastases are present, in which case it must be ≤5x ULN) 3. Renal function: measured creatinine clearance \>40 mL/min or estimated glomerular filtration rate (GFR) \>40 mL/min If AST/ALT and serum creatinine elevation are suspected to be irAEs, patients are eligible as long as the irAE are controlled (i.e. not getting worse at the time of enrollment) * Well controlled diabetes with HbA1c of \<8 with in 6 months of screening * Euvolemic on physical examination * Stable vital signs at screening and enrollment that includes 1. Body temperature 95.8 to 99.9°F 2. Heart rate between 60-100/min 3. Blood pressure 90-140/60-90 mm of Hg. * Must be on standard antidiarrheal supportive care for at least 1 day prior to starting RMT. The regimen consists of: loperamide 2-4 mg every 6 hours (up to 16 mg /day) and/or diphenoxylate 5 mg/ atropine sulfate 0.05 mg (2 tabs or 10 ml) up to 4 times daily as needed. This will continue until resolution of diarrhea to NCI CTCAE v 5.0 Grade ≤ 1. * Age 18 years of age or older at the time of consent * Body weight of \>30 kg * Expected survival for at least 6 months in the opinion of the enrolling investigator as documented in the medical record * Voluntary written consent prior to the performance of any research related activity.	* Diagnosis of concomitant infectious colitis based on standard stool screening including stool microscopy for ova and parasites, stool PCR for Clostridioides difficile, and locally available common enteric bacterial pathogen and viral panel by PCR. * Last cytotoxic chemotherapy or targeted therapy less than 3 week prior to screening * Patients anticipated to require cytotoxic chemotherapy or targeted therapy through the end of treatment EOT period (30 days following first dose of RMT) * Known current pregnancy or breastfeeding. * Receiving another investigational agent or has received an investigational agent within 60 days of study enrollment. * Any other uncontrolled Grade ≥3 infection at the time of enrollment (Concomitant systemic antibiotics for non-GI infections are allowed). * Previous documented history of chronic diarrhea from non-IMDC causes (For example: inflammatory bowel disease (e.g., Crohn's disease, ulcerative colitis). * Known dysphagia or inability to swallow study capsules (CTCAE v5 Dysphagia Grade ≥2 - symptomatic and altered eating/swallowing). * Known risk of aspiration based on history or current complaints. * Has a known sensitivity to any component of therapeutic agents used in this study. * On intravenous biologic agents for other baseline autoimmune conditions. * Other concomitant uncontrolled irAE's at the time of enrollment which would require systemic corticosteroids or biologic immunomodulatory agents. * On chronic systemic antibiotic therapy (antibiotics for ≥60 consecutive days within 12 weeks of enrollment). * Receipt of over-the-counter probiotics in the last 4 weeks * Receipt of live attenuated vaccination within 30 days of receiving RMT. Examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, chickenpox (except shingrix), yellow fever, nasal seasonal flu, nasal H1N1 flu, rabies, BCG, and typhoid - COVID-19 vaccination is permitted. * Psychiatric illness/social situations that would limit compliance with study requirements or compromise the ability of the patient to give written informed consent.

Inclusion Criteria

Exclusion Criteria

* Localized, locally advanced or metastatic solid tumors who have received at least two doses of ICI (PD-1/PD-L1 with or without CTLA-4 inhibitor).
* ICI used as a single agent, or combination or ICI in combination with other cytotoxic chemotherapy or targeted therapy for curative or palliative intent treatment.
* Last ICI treatment with in 6 weeks of onset of IMDC symptoms
* Meet one of the criteria for steroid refractory IMDC defined as:
1. Persistent symptoms (NCI CTCAE v 5.0 Grade ≥ 2 diarrhea) following high-dose corticosteroid therapy (≥1 mg/kg/day prednisone or equivalent) for least 48 hours or
2. Persistent symptoms (ongoing Grade ≥ 2 diarrhea per CTCAE v5.0.) following use of a one or more biologic agent (i.e. either a TNFα inhibitor or an anti-integrin) in addition to corticosteroids (with starting dose of prednisone or equivalent ≥1 mg/kg/day for at least 48 hours followed by receipt of at least one dose of either a TNFα inhibitor or an anti- integrin for at least 48 hours or
3. For patients with relapsed IMDC who have discontinued steroids: Relapsed IMDC symptoms for 24 or more hours (NCI CTCAE v 5.0 Grade ≥ 2 diarrhea) within 4 weeks of discontinuing prednisone or equivalent. These patients should have received initial high-dose corticosteroid therapy (˃1 mg/kg/day prednisone or equivalent) with subsequent taper over at least 4 weeks or
4. For patients with relapsed IMDC following the tapering of steroids Relapsed IMDC symptoms for 24 or more hours (NCI CTCAE v 5.0 Grade ≥ 2 diarrhea) while the prednisone taper is on-going. These patients should have received initial high-dose corticosteroid therapy (˃1 mg/kg/day prednisone or equivalent) with resulting clinical resolution of diarrhea (NCI CTCAE v 5.0 Grade ˂ 1 diarrhea) for at least 24 hours before relapse
* Adequate organ function within 14 days prior to study enrollment defined as:
1. Hematology: Hemoglobin ≥9.0 g/dL, absolute neutrophil count (ANC) ≥1,000/mcL, platelets ≥75,000/mcL,
2. Hepatic function: Total bilirubin ≤ 1.5x upper limit of normal (ULN), AST (SGOT) and ALT (SGPT) ≤ 2.5 x institutional ULN unless liver metastases are present, in which case it must be ≤5x ULN)
3. Renal function: measured creatinine clearance \>40 mL/min or estimated glomerular filtration rate (GFR) \>40 mL/min If AST/ALT and serum creatinine elevation are suspected to be irAEs, patients are eligible as long as the irAE are controlled (i.e. not getting worse at the time of enrollment)
* Well controlled diabetes with HbA1c of \<8 with in 6 months of screening
* Euvolemic on physical examination
* Stable vital signs at screening and enrollment that includes
1. Body temperature 95.8 to 99.9°F
2. Heart rate between 60-100/min
3. Blood pressure 90-140/60-90 mm of Hg.
* Must be on standard antidiarrheal supportive care for at least 1 day prior to starting RMT. The regimen consists of: loperamide 2-4 mg every 6 hours (up to 16 mg /day) and/or diphenoxylate 5 mg/ atropine sulfate 0.05 mg (2 tabs or 10 ml) up to 4 times daily as needed. This will continue until resolution of diarrhea to NCI CTCAE v 5.0 Grade ≤ 1.
* Age 18 years of age or older at the time of consent
* Body weight of \>30 kg
* Expected survival for at least 6 months in the opinion of the enrolling investigator as documented in the medical record
* Voluntary written consent prior to the performance of any research related activity.

* Diagnosis of concomitant infectious colitis based on standard stool screening including stool microscopy for ova and parasites, stool PCR for Clostridioides difficile, and locally available common enteric bacterial pathogen and viral panel by PCR.
* Last cytotoxic chemotherapy or targeted therapy less than 3 week prior to screening
* Patients anticipated to require cytotoxic chemotherapy or targeted therapy through the end of treatment EOT period (30 days following first dose of RMT)
* Known current pregnancy or breastfeeding.
* Receiving another investigational agent or has received an investigational agent within 60 days of study enrollment.
* Any other uncontrolled Grade ≥3 infection at the time of enrollment (Concomitant systemic antibiotics for non-GI infections are allowed).
* Previous documented history of chronic diarrhea from non-IMDC causes (For example: inflammatory bowel disease (e.g., Crohn's disease, ulcerative colitis).
* Known dysphagia or inability to swallow study capsules (CTCAE v5 Dysphagia Grade ≥2 - symptomatic and altered eating/swallowing).
* Known risk of aspiration based on history or current complaints.
* Has a known sensitivity to any component of therapeutic agents used in this study.
* On intravenous biologic agents for other baseline autoimmune conditions.
* Other concomitant uncontrolled irAE's at the time of enrollment which would require systemic corticosteroids or biologic immunomodulatory agents.
* On chronic systemic antibiotic therapy (antibiotics for ≥60 consecutive days within 12 weeks of enrollment).
* Receipt of over-the-counter probiotics in the last 4 weeks
* Receipt of live attenuated vaccination within 30 days of receiving RMT. Examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, chickenpox (except shingrix), yellow fever, nasal seasonal flu, nasal H1N1 flu, rabies, BCG, and typhoid - COVID-19 vaccination is permitted.
* Psychiatric illness/social situations that would limit compliance with study requirements or compromise the ability of the patient to give written informed consent.

Contacts and Locations

Study Contact

Ajay Prakash, MD, PhD

CONTACT

614-325-2088

praka086@umn.edu

Principal Investigator

Ajay Prakash, MD, PhD

PRINCIPAL_INVESTIGATOR

University of Minnesota

Study Locations (Sites)

Essentia Health St. Joseph's Medical Center

Brainerd, Minnesota, 56401

United States

Essentia Health Deer River Clinic

Deer River, Minnesota, 56636

United States

Essentia Health St. Mary's Detroit Lakes Clinic

Detroit Lakes, Minnesota, 56501

United States

Essentia Health Cancer Center

Duluth, Minnesota, 55805

United States

Essentia Health Fosston

Fosston, Minnesota, 56542

United States

Essentia Health Hibbing Clinic

Hibbing, Minnesota, 55746

United States

University of Minnesota

Minneapolis, Minnesota, 55414

United States

Essentia Health Sandstone

Sandstone, Minnesota, 55072

United States

Essentia Health Virginia Clinic

Virginia, Minnesota, 55792

United States

Collaborators and Investigators

Sponsor: University of Minnesota

Ajay Prakash, MD, PhD, PRINCIPAL_INVESTIGATOR, University of Minnesota

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2025-09-23

Study Completion Date2026-02-01

Study Record Updates

Study Start Date2025-09-23

Study Completion Date2026-02-01

Terms related to this study

Additional Relevant MeSH Terms

Immune-related Colitis
Colitis