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

24. července 2026 aktualizováno: 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.

Přehled studie

Postavení

Nábor

Podmínky

Intervence / Léčba

Detailní popis

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.

Typ studie

Intervenční

Zápis (Odhadovaný)

20

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní místa

    • RM
      • Roma, RM, Itálie, 00146
        • Nábor
        • Fondazione Policlinico Universitario Agostino Gemelli, IRCCS
        • Kontakt:

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý
  • Starší dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

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

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Diagnostický
  • Přidělení: N/A
  • Intervenční model: Přiřazení jedné skupiny
  • Maskování: Žádné (otevřený štítek)

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Type of patients
patients with UC and CD
For the collection of a few additional biopsies
rectal administration of a specific probiotic

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Evaluate the effect of rectal administered a specific probiotic in Rectal mucosal healing
Časové okno: 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

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
evaluate the feasibility of a specific probiotic
Časové okno: 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
Časové okno: 1 year
Tolerability of rectally administered probiotic assessed by the incidence of adverse events and treatment discontinuations.
1 year
Evaluate the quality of life
Časové okno: 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

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Aktuální)

14. května 2025

Primární dokončení (Odhadovaný)

14. září 2026

Dokončení studie (Odhadovaný)

14. května 2027

Termíny zápisu do studia

První předloženo

22. dubna 2026

První předloženo, které splnilo kritéria kontroly kvality

20. července 2026

První zveřejněno (Aktuální)

24. července 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

27. července 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

24. července 2026

Naposledy ověřeno

1. července 2026

Více informací

Termíny související s touto studií

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