AzTrials
AzTrials

Type 1 Diabetes MellitisPhase 2FACT-T1DNCT07083882

Faecal Autologous Capsule Transplantation for Type 1 Diabetes Mellitus

A Phase 2 study testing freezedried autologous encapsulated fecal microbiota transplantation in people with Type 1 Diabetes Mellitis and Type 1 Diabetes (T1D), run by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) at 1 site in Netherlands.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

SUMMARY Rationale: The(small) intestinal microbiota composition has been implicated to play an important role in (human) metabolism, as well as autoimmune diseases such as type 1 diabetes mellitus. Read more about this study

Who is it for?
Ages 18 to 45 years
What is being tested?
freezedried autologous encapsulated fecal microbiota transplantation
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
110 participants
Where
1 siteNetherlands
Study dates
Sep 2025to Sep 2029
Phase
Phase 2
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • Male or female recently diagnosed (<100 days) with type 1 diabetes mellitus.
  • Age:18-45 years
  • BMI: 18-30 kg/m2
  • Remaining residual beta cell function: detectable plasma C-peptide or urinary C-peptide at inclusion of the study.

Who cannot join

  • Major systemic illness
  • (Expected) prolonged comprised immunity (e.g. due to recent cytotoxic chemotherapy or human immunodeficiency virus(HIV) infection with a CD4 count < 240/mm3).
  • History of a severe disease of the digestive tract, such as celiac disease, chronic diarrhoea (≥3 stools/day for >4 weeks), chronic obstipation (<2 defecations/week for >3 months) or Inflammatory Bowel Disease (IBD).
  • Illicit drug use (e.g. MDMA/amphetamine/cocaine/heroin/GHB) in the past three months or use during the study period.
  • Use of >21 units of alcohol per week on average in the past three months.
  • Pregnancy or breast feeding.
  • Inability to provide informed consent.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Nordin MJ Hanssen, MD PhD contact

020 566 9111

n.m.j.hanssen@amsterdamumc.nl

Max Nieuwdorp, MD PhD contact

020 566 9111

Netherlands1 site, 1 recruiting
  • Diabeter Centrum Amsterdam

    Amsterdam

    Nordin MJ Hanssen, MD PhD, 088-280 91 00

    Recruiting

Other trials in Netherlands

About this study

SUMMARY

Rationale:

Read more

The(small) intestinal microbiota composition has been implicated to play an important role in (human) metabolism, as well as autoimmune diseases such as type 1 diabetes mellitus. Faecal microbiota transplantation (FMT) has been shown to significantly alter the microbiota composition, without any serious side-effects. It was recently demonstrated that multiple infusions of own faeces(autologous) preserved residual beta cell function up to one year after start of the FMT. In a proof-of-principle study it was found that encapsulated autologous FMT provides a safe and feasible option for prolonged treatment on a daily basis, which might stabilize the beta-cell destruction. These exciting findings are potentially transformative for clinical practice and deserve replication in a larger placebo-controlled trial.

Objective: confirm the efficacy and feasibility of daily ingested encapsulated freeze-dried autologous (own)faecal matter on the preservation of residual beta cell function as assessed by C-peptide release upon amixed meal test (MMT) in recently diagnosed type 1 diabetes mellitus (T1D).

Study design: double-blind placebo-controlled study Study population: n=110, recently diagnosed (<100 days of diagnosis) patients with T1D, aged 18-45 years, BMI 18-30 kg/m2, male/female.

Intervention: After inclusion and randomisation individuals will receive for 6 months either placebo or freeze-dried autologous encapsulated FMT in a 1:2 ratio. Subsequently, participants with be followed for 6 months whether beta cell preservation was durable after cessation of treatment.

Main study parameters/endpoints: The primary endpoint is long-term preservation of beta cell insulin secretion capacity as assessed by stimulated C-peptide AUC0-120minresponse upon MMT (at0, 6 and 12months).The secondary endpoint pertains to changes in post-meal urinary C-peptide levels, plasma biochemistry (HbA1c levels),glucose time-in-range and subsequentexogenous insulin dose use at 0, 6 and 12months.

Nature and extent of the burden and risks associated with participation,benefit and group relatedness: This study is considered a low-risk study, 3MMTs will be performed, for which 70 ml of blood samples will be drawn each visit. As of today, no severe adverse events as result of FMT have been reported in this centre and in the ENCAPSULATE trial investigating the feasibility and safety of this approach participants only reported some minor and transient constipation. In addition, the use of autologous faeces comes with a lower(absent)risk for transmitting any unknown pathogens compared to an allogenic FMT. As there currently is no widely applied therapy to preserve beta cell function in type 1 diabetes, encapsulated autologous FMT can have a potential benefit for the participants.

Read the detailed description

OBJECTIVES This study is designed to confirm whether a microbial intervention based on capsules containing autologous (own) lyophilized faecal microbiota, LFMCs, taken daily for 6 months has beneficial effects on residual beta cell function (C-peptide secretion uponMMT) in recently diagnosed type 1 diabetes mellitus compared to placebo. A parallel objective is to assess the impact on glycaemic control.

To investigate the effect of daily oral intake of autologous LFMCs on:

I Preservation of residual beta cell insulin secretion capacity: assessed by maximal C-peptiderelease(residual beta cell function)upon an MMT, AUC0-120min at 0,6 and 12 months. As an additional marker of residual beta cell function, at home post-meal urinary C-peptide levels will be used.

II Glycaemic control: changes in plasma biochemistry (glucose, HbA1c), glucose time in range (FreestyleLibre), urine (microalbuminuria) and subsequent exogenous insulin dose use at 0,6 and 12months.

III Questionnaires and dietary intake: validated questionnaires for abdominal complaints, diabetic complications and hypoglycaemia frequency at 0,6 and 12 months. Dietary intake will be registered via online dietary lists at 0,6 and 12months.

STUDY DESIGN This is a placebo controlled, double blind, single-centre study. After the randomisation, in a 1:2 (placebo:LFMC) ratio using a validated variable block randomization model in Castor, stratified for sex with block sizes 4,6 and 8, participants will ingest the autologous LFMCs or placebo daily for 6months, which will be followed by a follow-up period of 6months. In total, participants will be followed for12months after inclusion.

Study visits Subjects will in principle visit 3 times in total for this study, with 1 prior screening visit that essentially encompasses participation in the MARVEL cohort (NL85375.018.23, measuring residual beta cell function and questionnaires) and one visit to pick up the second batch of capsules. Each visit will take 180 minutes (maximum of 12 hours over 12 months).

Screening Blood will be drawn for basic biochemistry and patients will hand in the food diaries, questionnaires. In addition, height, weight, blood pressure will be measured and BMI will be calculated. As the faeces is needed to produce the autologous LFMCs, participants are instructed to collect at least 300 grams of fresh faeces. If the fresh faeces is insufficient (<300g), participants are asked to collect more fresh faeces and bring thisto the AMC at a later date (but before the baseline visit).

Optional: additional fecal collections. It may be the case that individuals produce insufficient feces at once, in that case participants are asked to bring in addition samples until 300g is reached.

Visit1: baseline visit (0 months) At baseline a MMT will be performed, blood will be drawn for basic biochemistry and patients will hand in the food diaries, questionnaires and their fecal and 2h post-meal urine sample. Thereafter, the participant will start with the LFMCs for 6months. The first capsule is ingested with the investigator present to ensure the participant tolerates the capsules well and has an appropriate intake technique.

Visit 2 (3months): by phone to evaluate compliance and potential side-effects.

Visit3: follow-up visit (6months) During this visit the MMT will be repeated, blood will be drawn for basic biochemistry and patients will hand in the food diaries and questionnaires and their 2h post-meal urine sample. In addition, height, weight, blood pressure are measured again. Participants stop with the LFMCs and return any remaining capsules to the investigator.

Visit4: follow-up visit (12months) During this last visit, the MMT will berepeated, blood will be drawn for basic biochemistry and patients will hand in the food diaries, questionnaires and their 2h post-meal urine sample. In addition, height, weight, blood pressure are measured again.

Being tested
freezedried autologous encapsulated fecal microbiota transplantation, placebo matching capsule without microbial content
Keywords
microbiome, type 1 diabetes, microbiota transplant
Medical subject headings
Diabetes Mellitus, Type 1

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • freezedried autologous encapsulated fecal microbiota transplantationBiological

    The freezedried autologous encapsulated microbiota transplantation increases the exposure of the small intestine to the microbiota residing in the colon. Prior evidence was found that this has strong immunomodulatory effects leading to potential preservation of beta cell function in type 1 diabetes.

  • placebo matching capsule without microbial contentOther

    this is the matching placebo capsule that looks from the outside identical to the actual treatment but does not contain the fecal microbiota.

Study groups in NCT07083882
Study groupRoleWhat they receive
PlaceboPlacebo comparatorNot described
Receives: Other: placebo matching capsule without microbial content
Encapsulated autologous fecal microbiota transplantationExperimentalNot described
Receives: Biological: freezedried autologous encapsulated fecal microbiota transplantation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Preservation of residual beta cell insulin secretion capacity

    measured by plasma C-peptide in mixed meal and 2hour post meal urine sample

    Measured: At baseline, at 6 months upon completion of treatment and at 12 months after intiation of treatment

Secondary outcomes (4)
  1. Hba1c

    expressed as mmol-mol

    Measured: At baseline, at 6 months upon completion of treatment and at 12 months after intiation of treatment

  2. Continuous glucose monitoring

    Time in range expressed as % and time below range expressed as %

    Measured: At baseline, at 6 months upon completion of treatment and at 12 months after intiation of treatment

  3. albuminuria

    expressed as ratio urinary albumin an kreatinin, as mg-mol

    Measured: At baseline, at 6 months upon completion of treatment and at 12 months after intiation of treatment

  4. exogenous insulin dose

    expressed as units used per 24 hours

    Measured: At baseline, at 6 months upon completion of treatment and at 12 months after intiation of treatment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Jul 2025
  2. Study startSep 2025 (estimated)
  3. Primary completionSep 2029 (estimated)
  4. Study completionSep 2029 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
110 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07083882
Sponsor's protocol ID
METC2025.0067
Acronym
FACT-T1D
Status last verified
Jul 2025
First submitted
11 Jul 2025
Last updated
24 Jul 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing freezedried autologous encapsulated fecal microbiota transplantation in people with Type 1 Diabetes Mellitis and Type 1 Diabetes (T1D), run by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) at 1 site in Netherlands.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 24 Jul 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Nordin MJ Hanssen, MD PhD (020 566 9111, n.m.j.hanssen@amsterdamumc.nl), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Preservation of residual beta cell insulin secretion capacity (time frame: At baseline, at 6 months upon completion of treatment and at 12 months after intiation of treatment). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Jul 2025.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in