About this trial
The purpose of this study is to learn the efficacy and safety of fecal microbiota transplantation (FMT) using stool from a donor with low proteolytic activity and containing the bacteria Alistipes putredinis in patients with irritable bowel syndrome (IBS) and high proteolytic activity. Proteolytic activity is the breakdown of proteins into smaller polypeptides or amino acids.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
IBS defined by Rome IV criteria
Non IBS-C
Moderate to severe symptoms defined by IBS-SSS≥175
Able to safely undergo and consent to colonoscopy
Disqualifiers
Immune deficiency or treatment with immunosuppressive medications
Severe bowel or medical disease precluding administration of bowel prep
Severe bowel or medical disease precluding colonoscopy with conscious sedation
Active cancer
Trial design
Parallel
Treatments tested in this trial
Donor Fecal Microbiota Transplantation
Biological/VaccineSingle fecal microbiota transplantation using 50 gm of freeze-thawed donor stool
Autologous Fecal Microbiota Transplantation
Biological/VaccineSingle fecal microbiota transplantation using 50 gm of stool collected from the same individual
Treatment groups
Trial outcomes
Primary outcomes
Percentage of responders
Number of subjects receiving the donor fecal microbiota transplantation identified as a responder defined as a decrease of ≥50 points in Irritable Bowel Syndrome Symptom Severity Score (IBS-SSS) from baseline. The Irritable Bowel Syndrome Symptom Severity Score scale has a possible range of scores from 0-500. Mild cases are classified as a score of 75-175, moderate cases are classified as a score of 175-300, and severe cases are classified as a score of \>300.
Secondary outcomes
Change in level of fecal proteolytic activity
The level of fecal proteolytic activity will be measured at baseline and again at 12 weeks. The proteolytic activity is measured using a standardized FITC Casein assay that relies on the activity of proteases in the sample to digest casein protein.
Changes in in vivo excretion of 2-24 hr lactulose excretion
Measured by permeability testing
Number of weekly responders
Number of subjects to meet responder criteria of ≥30% decrease in average of worst abdominal pain in past 24 hours plus ≥50% decrease in the number of days per week with at least one stool that has a consistency of Type 6 or 7 (compared with baseline)
Global Adequate Relief Questionnaire
Number of subjects to report adequate relief of IBS symptoms, measured by answering yes to question "In the past 7 days have you had adequate relief of your IBS symptoms?"
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
Madhusudan (Madhu) Grover, MBBS
Lead sponsor
Mayo Clinic
Sponsor institution