An Early Phase 1 interventional study of Fecal Microbiota Transplantation (FMT) in Diverticulitis and Uncomplicated Diverticular Disease, sponsored by Justin Maykel. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-05-07.
Sponsored by Justin Maykel · Early Phase 1, Interventional, and Treatment
Fecal Microbiota Transplantation (FMT) is an established treatment for Clostridium difficile (C. diff) infection refractory to medical management. As C. diff infection usually arises due to significant disturbances in the gut microbiome, FMT is typically performed to restore a healthy microbiome among affected patients who have failed other treatments. Diverticulitis is a major, and often recurrent, source of morbidity in the U.S for which antibiotics and surgical resection constitute the only treatment options to date. Although alterations of the intestinal microbiome have also been shown among patients with diverticular disease, research on FMT in diverticulitis is sparse. The intended goal of this project is to determine the feasibility, effectiveness and safety of FMT in the treatment of uncomplicated diverticulitis, using clinical outcomes and microbiome analyses.
This study aims to assess the safety and efficacy of fecal microbiota transplantation (FMT) in treating uncomplicated diverticulitis. FMT will be delivered via colonoscopy using donor stool. Fecal material samples obtained from the University of Minnesota Microbiota Therapeutics Program (UMMTP) will be used each patients FMT. These samples undergo FDA mandated testing prior to being used as donor samples.
Recipients will undergo FMT via Colonoscopy at UMASS Memorial Medical Center and will be monitored for one hour after the procedure to ensure they are not experiencing any adverse events. They will receive a phone call 24 hours and 2 weeks after their procedure to ensure that they are at their baseline health. Recipients follow-up visits will occur at one month, 3 month, 6 months and 1 year post FMT.
Baseline stool samples will be collected from both the recipients and the UMMTP samples for baseline metagenomic sequencing. Recipient stool samples will be obtained weekly for the first month, then at 3 months, 6 months and 1 year. Microbiome analyses will also performed on recipient all stool samples post FMT to assess for successful engraftment of donor's microbiota onto the recipient's.
125 studies on the registry are indexed under Diverticulitis; 22 are open to participants now.
This study's planned enrollment of 10 is below the median of 120 across 63 interventional studies indexed under Diverticulitis.
Browse Diverticulitis studies →This is the only study on the registry with Justin Maykel as lead sponsor.
Counted across the registry records on this site, refreshed daily.
Recipient Inclusion Criteria:
Recipient Exclusion Criteria:
Donor Inclusion Criteria:
Donor Exclusion Criteria:
Risk of infectious agent
Individuals who are at a higher risk for colonization with multi-drug resistant organisms (MDRO):
Gastrointestinal comorbidities
Other
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
This will be a single-arm pilot study of patients with uncomplicated diverticulitis. All subjects enrolled as recipients will undergo FMT via colonoscopy.
Biological: Fecal Microbiota Transplantation (FMT)
Fecal microbiota transplantation (FMT) involves administering fecal material from a healthy individual into the gastrointestinal tract of another individual. This is currently an accepted method of treatment for recurrent colitis secondary to Clostridium difficile infection refractory to antibiotics/medical management. FMT can be delivered via capsule endoscopy or via colonoscopy. In this study, it will be administered via colonoscopy.
Number of diverticular flares/attacks since FMT
After FMT, recipients/participants will be asked to report the number of diverticulitis episodes they have experienced since FMT
Time frame: 1 year
Number of emergency room visits and hospitalizations due to diverticulitis since FMT
After FMT, recipients/participants will be asked to report the number of times (if any) they presented to the emergency room or were hospitalized due to diverticulitis.
Time frame: 1 year
Number of courses of antibiotics required for the treatment of diverticulitis since FMT
After FMT, recipients/participants will be asked to report whether they required any antibiotics due to diverticulitis
Time frame: 1 year
Necessity for surgery
After FMT, recipients/participants will be asked to report whether they required surgery to treat diverticulitis
Time frame: 1 year
Plan to share: No
No publications or documents are linked to this record.
This study is active, not recruiting, as verified in May 2026. You cannot join it, but the record below documents what was studied.
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