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Autologous Fecal Microbiota Transplantation for Anal Function Recovery After Ileostomy Reversal in Rectal Cancer

14. juli 2026 opdateret af: Shen Zhanlong, Peking University People's Hospital

Autologous Fecal Microbiota Transplantation for Anal Function Recovery After Ileostomy Reversal in Patients With Rectal Cancer: A Prospective, Single-center, Single-arm, Open-label Clinical Study

This prospective, single-center, single-arm, open-label clinical study aims to evaluate whether autologous fecal microbiota transplantation can improve bowel and anal function after ileostomy reversal in patients with rectal cancer who underwent radical rectal cancer surgery with protective loop ileostomy. Eligible patients will receive autologous fecal microbiota transplantation before ileostomy reversal. The primary outcome is the Low Anterior Resection Syndrome score at 3 months after ileostomy reversal. Secondary outcomes include fecal incontinence score, colonoscopic findings before ileostomy reversal, gut microbiota profiles, inflammatory markers, anorectal manometry, pelvic floor electromyography, and safety outcomes.

Studieoversigt

Status

Aktiv, ikke rekrutterende

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Patients with rectal cancer who undergo radical resection with protective loop ileostomy may experience diversion-related changes in the distal bowel, gut microbiota dysbiosis, diversion colitis, and impaired bowel function after ileostomy reversal. Autologous fecal microbiota transplantation may help restore the intestinal microbial environment in the defunctioned bowel and improve postoperative bowel function.

In this study, eligible patients will undergo standard radical rectal cancer surgery with protective loop ileostomy. At approximately 8 weeks after surgery, patients without severe postoperative complications such as anastomotic leakage will undergo anal swab sampling for 16S rRNA gene sequencing. Autologous fecal microbiota transplantation will be performed once weekly at postoperative weeks 8, 9, 10, and 11. At approximately 12 weeks after surgery, colonoscopy will be performed to evaluate the distal bowel mucosa, and intestinal secretion samples will be collected for 16S rRNA gene sequencing. Ileostomy reversal will then be performed according to routine clinical practice. Bowel function will be followed for 3 months after ileostomy reversal, with the primary endpoint being the LARS score at 3 months after reversal.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

35

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

  • Kina
    • Beijing Municipality
      • Beijing, Beijing Municipality, Kina, 100044
        • Peking University People's Hospital

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. Age 18 to 75 years.
  2. Histologically or clinically confirmed rectal cancer with the lower tumor margin less than 12 cm from the anal verge.
  3. Undergoing radical rectal cancer surgery with protective loop ileostomy.
  4. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
  5. Able to understand the study procedures and willing to provide written informed consent.

Exclusion Criteria:

  1. History of inflammatory bowel disease, bacterial colitis, or other preoperative colonic inflammatory disease.
  2. Requirement for emergency surgery due to intestinal obstruction, perforation, bleeding, or other emergency conditions.
  3. Pregnant or lactating women.
  4. Presence of clinically significant gut microbiota dysbiosis before enrollment, as judged by the investigator.
  5. Planned postoperative radiotherapy, chemotherapy, or chemoradiotherapy.
  6. Poor compliance, inability to tolerate the intervention, or judged by the investigator to be unsuitable for participation in this clinical study.
  7. Severe postoperative complications such as anastomotic leakage.

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: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Autologous Fecal Microbiota Transplantation Group
Participants with rectal cancer who underwent radical rectal cancer surgery with protective loop ileostomy will receive autologous fecal microbiota transplantation before ileostomy reversal.
Biologisk: Autologous Fecal Microbiota Transplantation
Autologous fecal microbiota transplantation will be prepared from the participant's own fecal material collected from the ileostomy output. Approximately 50 g of fecal material will be mixed with 100 mL sterile normal saline, homogenized, filtered through sterile sieves, and administered slowly into the distal bowel via transanal catheter/enema. The procedure will be performed once weekly at postoperative weeks 8, 9, 10, and 11, for a total of four administrations. Participants will be observed after the procedure according to the study protocol.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Low Anterior Resection Syndrome Score at 3 Months After Ileostomy Reversal
Tidsramme: 3 months after ileostomy reversal
Low Anterior Resection Syndrome (LARS) score will be assessed using the LARS questionnaire at 3 months after ileostomy reversal. The total score ranges from 0 to 42 points, with higher scores indicating more severe bowel dysfunction. Scores of 0-20 indicate no LARS, 21-29 indicate minor LARS, and 30-42 indicate major LARS.
3 months after ileostomy reversal

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Colonoscopic Mucosal Findings Before Ileostomy Reversal
Tidsramme: Approximately 12 weeks after initial surgery and before ileostomy reversal
The distal bowel mucosa will be evaluated by colonoscopy before ileostomy reversal. Findings related to diversion colitis, including mucosal erythema, edema, friability, erosion, ulceration, bleeding, and mucus retention, will be recorded.
Approximately 12 weeks after initial surgery and before ileostomy reversal

Samarbejdspartnere og efterforskere

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

Sponsor

Peking University People's Hospital

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 (Faktiske)

25. marts 2025

Primær færdiggørelse (Faktiske)

20. maj 2026

Studieafslutning (Anslået)

1. september 2026

Datoer for studieregistrering

Først indsendt

14. juli 2026

Først indsendt, der opfyldte QC-kriterier

14. juli 2026

Først opslået (Faktiske)

17. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

17. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

14. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • PKUPH-FMT-01

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data will not be shared. The study is a single-center clinical study with a relatively small sample size and includes sensitive clinical information, surgical details, functional outcomes, and microbiome sequencing data. Even after de-identification, there may remain a potential risk of participant re-identification. In addition, the informed consent form did not include specific permission for public sharing of individual-level participant data. Aggregate study results will be reported in publications or presentations.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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