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

10. juli 2026 oppdatert av: 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.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Antatt)

30

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

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

Studiesteder

  • Kroatia
      • Opatija, Kroatia
        • Polyclinic GrandMed
        • Ta kontakt med:
          • Tea Rosovic, Dermatovenerology specialist
          • Telefonnummer: +00385913737237
          • E-post: tearosovic@gmail.com
        • Hovedetterforsker:
          • Tea Rosovic, Dermatovenerology specialist

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: FMT group
Interventional group
Annen: 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 navn:
  • FMT
Placebo komparator: Placebo group
This group will recieve placebo capsules or saline via colonoscopy
Annen: Placebo
Patients will recieve three capsules with inert material or saline via colonoscopy

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Polyclinic GrandMed

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. oktober 2026

Primær fullføring (Antatt)

1. februar 2027

Studiet fullført (Antatt)

1. oktober 2027

Datoer for studieregistrering

Først innsendt

26. juni 2026

Først innsendt som oppfylte QC-kriteriene

10. juli 2026

Først lagt ut (Faktiske)

15. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

15. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

10. juli 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • TD25725

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

JA

IPD-planbeskrivelse

IPD used in the results publication

IPD-deling Støtteinformasjonstype

  • STUDY_PROTOCOL
  • SEVJE
  • ICF
  • ANALYTIC_CODE
  • CSR

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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