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A Specific Probiotic in thE MOdulation of Gut Microbiota of patieNts With Mild-to-modErate Ulcerative Colitis (ANEMONE)

24. Juli 2026 aktualisiert von: Antonio Gasbarrini, Catholic University of the Sacred Heart

A. M in thE MOdulation of Gut Microbiota of patieNts With Mild-to-modErate Ulcerative Colitis: a Pilot,Phase 2A, Single-arm, Interventional Study

Probiotics are live microorganisms that provide health benefits when consumed in sufficient amounts. Traditional probiotics, mainly from the Lactobacillus and Bifidobacterium genera, originate from fermented foods or the human gut and are widely used in supplements. Although considered safe and easy to produce, they are not specifically designed to treat diseases, and no official health claims have been approved by EFSA. Advances in microbiome research have led to the discovery of Next-Generation Probiotics (NGPs), which are newly identified gut microbes associated with health and offer promising therapeutic potential despite lacking a long history of safe use.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

The concept of probiotics dates back to 1907, when Elie Metchnikoff observed that elderly Bulgarian populations consuming fermented dairy products, such as yogurt rich in lactic acid bacteria (LAB), appeared to have increased longevity. This observation formed the basis for the development of traditional probiotics.

Traditional probiotics are defined as live microorganisms that confer a health benefit when administered in adequate amounts. These microbes are typically derived from fermented foods or the human gastrointestinal tract. Most belong to a limited number of well-characterized genera, particularly Lactobacillus and Bifidobacterium. Certain strains of these bacteria are recognized as safe and have been granted Qualified Presumption of Safety (QPS) status by the European Food Safety Authority (EFSA). In addition, they are technologically robust, meaning they can be easily cultivated and mass-produced for industrial applications.

Despite their popularity and widespread use in dietary supplements and functional foods, traditional probiotics are not specifically developed as treatments for diseases. Their mechanisms of action include modulation of gut microbiota, enhancement of the gut barrier, and interaction with the immune system. However, most supporting evidence comes from laboratory (in vitro), animal, or ex vivo studies rather than strong clinical trials. As a result, EFSA has evaluated more than 400 probiotic-related claims but has not approved any specific health claims due to insufficient conclusive evidence.

In recent years, advances in microbiota and microbiome research-particularly through metagenomics and microbial profiling-have significantly expanded our understanding of the gut ecosystem. It is now well established that dysbiosis, or imbalance in gut microbiota composition, is associated with a wide range of diseases, including metabolic, immune, and inflammatory disorders.

These scientific developments have led to the identification of new microorganisms that are associated with healthy individuals rather than traditional dietary sources. These microbes are classified as Next-Generation Probiotics (NGPs) or Live Biotherapeutic Products (LBPs). Unlike traditional probiotics, NGPs are not restricted to classical genera and do not have a long history of safe human use. Instead, they are often identified through comparative studies analyzing differences between healthy and diseased microbiomes.

NGPs represent a promising new frontier in microbiota-based therapies, as they may be specifically selected or engineered to target particular diseases or health conditions. A growing number of potentially beneficial species have been identified, opening new opportunities for precision medicine and personalized interventions based on gut microbiota composition.

Studientyp

Interventionell

Einschreibung (Geschätzt)

20

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

  • Italien
    • RM
      • Roma, RM, Italien, 00146
        • Rekrutierung
        • Fondazione Policlinico Universitario Agostino Gemelli, IRCCS
        • Kontakt:

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Men or women 18 to 80 years of age at the time of consent
  • Previous diagnosis of ulcerative colitis, based on available endoscopic and histopathologic report, at least 3 months before screening
  • Mild-to-moderate disease activity based on Modified Mayo Score that should be between 4 and 6 with an endoscopic subscore >1 based on endoscopic evaluation performed during screening phase
  • Subjects are permitted to receive a concomitant therapeutic dose of the following IPs: Corticosteroids (≤20 mg/day of prednisone equivalents) at stable dose for at least 2 weeks before screening and mesalazine or other 5-ASA (including salazopyrin) at stable dose for at least 4 weeks before screening
  • Ability to provide a written informed consent and to be compliant with the schedule of protocol assessments.

Exclusion Criteria:

  • concomitant immunosuppressive therapy, including but not limited to thiopurines, methotrexate, anti-TNFalfas, anti-integrins and anti-IL12/23 or JAK inhibitors. Biological therapies should be stopped at least 8 weeks before baseline, except for ustekinumab which should be stopped for at least 12 weeks before baseline, small molecules agent should be discontinued 5 elimination half-lives within baseline. Patients that have been previously treated with ≥ 2 advanced/biological drugs (even if belonging to the same class) will be excluded.
  • Intolerance to topical therapy (enemas)
  • Allergy to A. muciniphila or any other component of the IP
  • Crohn's disease or inflammatory bowel disease unclassified (IBD-U)
  • Subject who received IV/intramuscular corticosteroids within 14 days prior to Screening or during the Screening period.
  • Subject who received topical therapy (i.e., enema or suppository of aminosalicylates / corticosteroids) within 14 days prior to Screening or during the Screening period.
  • Subject who received fecal microbial transplantation within 3 months prior to Baseline.

  • Subjects with the following chronic or active infections:

    • Active, chronic, or recurrent infection that based on the Investigator's clinical assessment makes the subject unsuitable candidate for the study
    • Infection with C. difficile, intestinal pathogen bacteria, intestinal parasites as identified during Screening as per clinical practice,
    • Are infected with human immunodeficiency virus (HIV),
    • Subject who has any condition including any physical, psychological, or psychiatric condition, which in the opinion of the Investigator, would compromise the safety of the subject or the quality of the data and renders the subject an unsuitable candidate for the study.
  • Pregnancy and breastfeeding

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Diagnose
  • Zuteilung: N / A
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Type of patients
patients with UC and CD
Diagnosetest: For a bipsies
For the collection of a few additional biopsies
Nahrungsergänzungsmittel: rectal administration
rectal administration of a specific probiotic

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Evaluate the effect of rectal administered a specific probiotic in Rectal mucosal healing
Zeitfenster: 1 year
The primary aim of this study is to evaluate the effect of rectal administered a specific probiotic on gut microbiota in patients with UC and CD for Rectal Mucosal Healing with mayo score. Rectal mucosal healing assessed by Mayo Endoscopic Subscore (MES) (range 0-3; lower scores indicate better mucosal healing and lower disease activity).
1 year

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
evaluate the feasibility of a specific probiotic
Zeitfenster: 1 year
To evaluate the feasibility of a specific probiotic rectal administration in a cohort of patients with mild-to-moderate ulcerative colitis by nursing notes
1 year
Evaluate the tolerability of rectal a specific probiotic in Rectal Mucosal healing
Zeitfenster: 1 year
Tolerability of rectally administered probiotic assessed by the incidence of adverse events and treatment discontinuations.
1 year
Evaluate the quality of life
Zeitfenster: 1 year
Quality of life assessed by the Inflammatory Bowel Disease Questionnaire (IBDQ) (range 32-224; higher scores indicate better quality of life).
1 year

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Catholic University of the Sacred Heart

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

14. Mai 2025

Primärer Abschluss (Geschätzt)

14. September 2026

Studienabschluss (Geschätzt)

14. Mai 2027

Studienanmeldedaten

Zuerst eingereicht

22. April 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

20. Juli 2026

Zuerst gepostet (Tatsächlich)

24. Juli 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

27. Juli 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

24. Juli 2026

Zuletzt verifiziert

1. Juli 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • 6991

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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