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Probiotika-Forschung: Offene funktionelle Intervention und Längsschnittbewertung bei gesunden Erwachsenen (PROFILE)

16. September 2026 aktualisiert von: OneCarbon

This study is a pre-post, open-label cohort study designed to investigate how a food-grade probiotic supplement affects biological measurements and wellbeing in healthy adults. Participants will take one capsule daily for either 1 month or 6 months.

During the study, participants will complete online cognitive tasks and provide blood and stool samples collected during home visits by trained staff. The samples will be analysed to explore changes in gut bacteria and other biological markers.

This study aims to understand whether the supplement is well tolerated and whether measurable biological changes occur. The study does not involve any experimental drugs or invasive procedures beyond blood sampling and stool collection, and participants will not be asked to change any current prescribed medications or treatments; with eligibility exclusions applying for recent antibiotics or immunosuppressants. The supplement is being studied for research purposes only and is not intended to diagnose, treat, or prevent disease. Participants will be invited to participate in a follow-up visit to assess long-term effects.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

180

Phase

  • Unzutreffend

Kontakte und Standorte

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

Studienkontakt

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

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Ja

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Aged 18 years or older at the time of providing informed consent.
  • In generally good health, with no known medical conditions that could interfere with the aims of the study or participant safety, as judged by self-report and screening questionnaire.
  • No history of significant psychiatric or neurological illness
  • Ability to complete study specific tasks, including:
  • Daily oral intake of a probiotic capsule
  • Self-collection of stool samples
  • Completion of online questionnaires and simple cognitive tasks
  • Able to read, understand, and communicate in English, in order to give informed consent and follow study instructions.
  • Access to the internet and a suitable device (e.g., smartphone, tablet, or computer) for completing online aspects of the study.

Exclusion Criteria:

  • Participants will be excluded from the study if any of the following criteria apply:
  • Use of any systemic antibiotic or systemic immunosuppressive medication within the past 8 weeks, including but not limited to:
  • β-lactam antibiotics, macrolides, tetracyclines, fluoroquinolones, aminoglycosides, glycopeptides, sulfonamides, antimycobacterial agents, systemic antifungals or antivirals
  • Use of any systemic immunosuppressants within the past 16 weeks, including, but not limited to:
  • Systemic corticosteroids, conventional immunosuppressants, biologic immunomodulators, targeted synthetic immunosuppressants, cytotoxic chemotherapy, or transplant-related immunosuppression.
  • A longer exclusion window is applied for systemic immunosuppressive therapies due to their prolonged and potentially lasting effects on immune function and gut microbial composition compared with systemic antibiotics.
  • Participants who commence systemic antibiotics or immunosuppressive therapy after enrolment will not be withdrawn from safety monitoring but will stop the supplement and will not continue the intervention phase of the study. With participant consent, data collected may still be used.
  • Major gastrointestinal disease or surgery:
  • Any history of significant gastrointestinal disease or surgery that may alter gut microbiome composition, immune function, or nutrient absorption, including but not limited to inflammatory bowel disease (Crohn's disease, ulcerative colitis, indeterminate colitis); coeliac disease or other chronic malabsorptive disorders; chronic liver, biliary, or pancreatic disease; moderate-to-severe or unstable irritable bowel syndrome; gastrointestinal malignancy; chronic gastrointestinal motility disorders; recurrent Clostridioides difficile infection; or any major gastrointestinal surgery such as bowel resection, bariatric surgery, colectomy, ileostomy or colostomy. Prior appendectomy or cholecystectomy alone is not exclusionary.
  • Current pregnancy or development of pregnancy, breastfeeding
  • Known allergy to probiotic or compounding ingredients:
  • Vitamin D3
  • Isomaltooligosaccharide
  • Yeast extract

Studienplan

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

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Grundlegende Wissenschaft
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Short Phase Group

This group will receive supplementation for 1 month

This probiotic is a proprietary food-grade supplement that is not yet commercially available or CE-marked.

Experimental: Long Phase Group

This group will receive supplementation for 6 months

This probiotic is a proprietary food-grade supplement that is not yet commercially available or CE-marked.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Changes in metagenome of stool samples
Zeitfenster: From enrolment to the end of treatment at 4 or 24 weeks respectively. Optionally, a follow-up measure may be offered 24 weeks after the end of treatment.

The investigators will evaluate changes in genetic material in participant stool, representing establishment of the probiotic in the digestive tract

From enrolment to the end of treatment at 4 or 24 weeks respectively. Optionally, a follow-up measure may be offered 24 weeks after the end of treatment.

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in blood multiome
Zeitfenster: From enrolment to the end of treatment at 4 or 24 weeks respectively. Optionally, a follow-up measure may be offered 24 weeks after the end of treatment.

This measure will evaluate change in blood proteins (plasma proteome) and blood metabolites (plasma metabolome). Both measures are quantified using mass to charge ratio.

From enrolment to the end of treatment at 4 or 24 weeks respectively. Optionally, a follow-up measure may be offered 24 weeks after the end of treatment.
Changes in cognition
Zeitfenster: Assessed weekly from enrolment and to end of treatment at 4 or 24 weeks respectively.

Participants will complete a weekly online cognitive test administered via our remote platform. This generates a score relativised to each participant's performance, and does not utilise a scale.

Assessed weekly from enrolment and to end of treatment at 4 or 24 weeks respectively.
Change in daytime sleepiness
Zeitfenster: Assessed at enrolment and at end of treatment at 4 or 24 weeks respectively.

Participants will complete the Epworth Sleepiness Scale (ESS), with a minimum score of 0, and a maximum score of 24. A higher score indicates worse daytime sleepiness.

Assessed at enrolment and at end of treatment at 4 or 24 weeks respectively.
Change in sleep quality
Zeitfenster: Assessed at enrolment and at end of treatment at 4 or 24 weeks respectively.

Participants will complete the Pittsburgh Sleep Quality Index (PSQI) survey. This has a minimum global score of 0, and a maximum of 21. A higher score indicates worse sleep quality.

Assessed at enrolment and at end of treatment at 4 or 24 weeks respectively.
Change in self-reported wellbeing and mood
Zeitfenster: Assessed at enrolment and at end of treatment at 4 or 24 weeks respectively.

Participants will fill out a questionnaire at the beginning and end of the study which will ask questions about subjective mood and wellbeing.

Assessed at enrolment and at end of treatment at 4 or 24 weeks respectively.
Adverse event monitoring
Zeitfenster: Assessed from enrolment until end of treatment at 4 or 24 weeks respectively.

Participants will be expected to self-report any adverse features resulting from use of the supplement

Assessed from enrolment until end of treatment at 4 or 24 weeks respectively.

Mitarbeiter und Ermittler

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

Sponsor

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 (Geschätzt)

1. Juli 2027

Primärer Abschluss (Geschätzt)

1. Juli 2027

Studienabschluss (Geschätzt)

1. Juli 2027

Studienanmeldedaten

Zuerst eingereicht

25. Februar 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

3. März 2026

Zuerst gepostet (Tatsächlich)

9. März 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

21. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

16. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • PROFILE

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

All personal data collected during the study will be pseudonymised at the earliest possible stage. Each participant will be assigned a unique study ID number, which will be used on all samples, questionnaires, and datasets. A separate, password-protected file will securely store the link between participant names and study IDs. This file will be accessible only to authorised study personnel.

No identifiable personal information will be included in the research database or shared with external analysts. All electronic data will be stored on secure, encrypted servers in compliance with UK GDPR and the Data Protection Act 2018. Access will be limited to members of the research team through password-protected accounts and role-based permissions.

Hard copies of personal data will not be collected or stored. Any correspondence containing identifiable information (e.g. email addresses) will be deleted or anonymised once no longer needed.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .