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The Role of Gut and Skin Microbiota in Alopecia Areata (RGSM-AA-ICS)

10. juli 2026 opdateret af: Tea Rosovic, Polyclinic GrandMed

The goal of this clinical trial is to learn if fecal microbiota transplantation (FMT) works to treat alopecia areata in adults. It will also learn about the safety of FMT. The main questions it aims to answer are:

  • Can FMT cause hair regrowth?
  • Can FMT modulate immune response? Researchers will compare FMT to a placebo (a look-alike substance that contains no drug) to see if FMT works to treat alopecia areata.

Participants will:

  • Take FMT or a placebo for three consecutive days
  • Follow-up evaluations will be performed at weeks 12, 24, and 48, with repeat clinical scoring, photodocumentation, microbiome analyses, laboratory testing, and quality-of-life assessment.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

30

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Tea Rosovic, Dermatovenerology specialist
  • Telefonnummer: +00385913737237
  • E-mail: tearosovic@gmail.com

Studiesteder

  • Kroatien
      • Opatija, Kroatien
        • Polyclinic GrandMed
        • Kontakt:
          • Tea Rosovic, Dermatovenerology specialist
          • Telefonnummer: +00385913737237
          • E-mail: tearosovic@gmail.com
        • Ledende efterforsker:
          • Tea Rosovic, Dermatovenerology specialist

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  1. Adults aged 18-65 diagnosed with Alopecia Areata (patchy or extensive) up to 10 years
  2. Willingness to adhere to study protocols, including FMT administration via capsules or colonoscopy.
  3. Ability to sign informed consent.
  4. SALT score≥ 20

Exclusion Criteria:

  1. History of gastrointestinal disorders (e.g., IBD, celiac disease).
  2. Recent use of antibiotics, probiotics, or prebiotics (within 2 months).
  3. Pregnant or breastfeeding women of childbearing potential who are unwilling or unable to use an acceptable method of birth control.
  4. Individuals with immunocompromised or immunosuppressed states (e.g., HIV, cancer).
  5. Prior FMT treatment for any condition.
  6. Therapy with new antidepressants or had a change in antidepressant dose within previous 3 months
  7. Serious medical comorbidities(including neurological or phychiatric comorbidities)
  8. Elevated C-reactive protein concentration, abnormal baseline laboratory tests
  9. Severe(anaphylactic) food allergy
  10. Concomitant treatments for AA: topical KS 1 week prior to randomization, topical JAK inhibitor, diphenylcyclopropenone, or other topical immunotherapies within 4 weeks prior to randomization;systemic corticosterids, immunosuppressant, intra-lesional or intra-articular corticosteroid injections, or oral JAK inhibitor within 8 weeks prior to randomization;monoclonal antibody <5 half-lives prior to randomization; probenecid at the time of randomization. Bimatoprost ophtalmic solution was allowed if on stable dose for 8 weeks.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: FMT group
Interventional group
Andet: Fecal Microbial Transplant Enema
Patients with alopecia areata will recieve FMT or in the 3 capsules for three consecutive days or FMT via colonoscopy
Andre navne:
  • FMT
Placebo komparator: Placebo group
This group will recieve placebo capsules or saline via colonoscopy
Andet: Placebo
Patients will recieve three capsules with inert material or saline via colonoscopy

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Changes in hair growth- Severity of Alopecia Tool
Tidsramme: From enrollment to the end of treatment at 48 weeks
The primary success will be a statistically significant difference in hair regrowth between the Fecal Microbiota transplantation (FMT) group and placebo group at weeks 24 and 48, assessed as a binary endpoint (regrowth yes/no) and supported by changes in SALT (Severity of Alopecia Tool) score as a standardized measurement used to quantify scalp hair loss in patients with alopecia areata. The scale ranges from 0 (no hair loss) to 100 (complete scalp hair loss). A clinically meaningful reduction in SALT score (≥50% improvement from baseline) will be considered a strong indicator of therapeutic efficacy.
From enrollment to the end of treatment at 48 weeks
Changes in hair growth- Alopecia Areata Investigator Global Assessment
Tidsramme: From enrollment to the end of treatment at 48 weeks
The primary success will be a statistically significant difference in hair regrowth between the Fecal Microbiota transplantation (FMT) group and placebo group at weeks 24 and 48, assessed as a binary endpoint (regrowth yes/no) and supported by changes in Alopecia Areata Investigator Global Assessment (AA-IGA) to measure five clinically meaningful gradations of alopecia areata scalp-hair loss that reflects patients' and clinicians' perspectives and expectations of treatment success in alopecia areata treatment studies. The AA-IGA score is based on the patient's SALT score. The scale is numbered from 0, which corresponds to 0% of hair loss (ie, SALT 0), indicating no hair loss, to 4, which corresponds to 95-100% of hair loss (ie, SALT 95-100), indicating very severe hair loss.
From enrollment to the end of treatment at 48 weeks
Changes in hair growth- The Alopecia Areata Scale
Tidsramme: From enrollment to the end of treatment at 48 weeks
The primary success will be a statistically significant difference in hair regrowth between the Fecal Microbiota transplantation (FMT) group and placebo group at weeks 24 and 48, assessed as a binary endpoint (regrowth yes/no) and supported by changes in The Alopecia Areata Scale (AASc) in wich primary criterion is Severity of scalp hair loss: mild 20% or less, moderate 21-49%, severe 50-100% scalp hair loss. Secondary criteria: is any is present, increase severity rating by one level: noticeable involvement of eyebrows or eyelashes; inadequate response after at least 6 months of treatment; negative impact on psychosocial functioning resulting from AA; diffuse (multifocal) positive hait pull test consistent with pidly progressive alopecia areata.
From enrollment to the end of treatment at 48 weeks
Fecal microbiota transplantation modulation of the gut and skin microbiota
Tidsramme: From enrollment to the end of treatment at 48 weeks
The primary objective of this proposal is to test the hypothesis that fecal microbiota transplantation (FMT) induces beneficial modulation of the gut and skin microbiota, leading to immunoregulatory effects in patients with alopecia areata (AA). Characterize baseline skin, and colonic mucosal microbiota composition in patients with AA using 16S rRNA sequencing of skin and colon musosa biopsy specimens and assess changes following FMT.
From enrollment to the end of treatment at 48 weeks
Change in T cell subsets from Baseline to 48 weeks
Tidsramme: From enrollment to the end of treatment at 48 weeks

Before and after Fecal microbiota transplantation patient will be taken 60-80 ml of peripheral blood for:

  • CBC, CRP
  • Flow cytometry analyses: Tumor necrosis factor alfa (TNFɑ), IL-10, IL-18, IFN-γ, IL-15, IL-2 and trichohyalin; CD4+ Th1 lymphocytes, CD8+ cytotoxic T cells, IFN-γ-producing lymphocytes, CXCR3+ T cells, NK cells, ILC1-like innate lymphoid cells, activated T cells expressing CD69 and HLA-DR, and regulatory T cells (CD4+CD25+FOXP3+)
From enrollment to the end of treatment at 48 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Polyclinic GrandMed

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. oktober 2026

Primær færdiggørelse (Anslået)

1. februar 2027

Studieafslutning (Anslået)

1. oktober 2027

Datoer for studieregistrering

Først indsendt

26. juni 2026

Først indsendt, der opfyldte QC-kriterier

10. juli 2026

Først opslået (Faktiske)

15. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

15. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

10. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • TD25725

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

IPD used in the results publication

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • ANALYTIC_CODE
  • CSR

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