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LMN-201 til forebyggelse af tilbagefald af C. Difficile-infektion

1. oktober 2026 opdateret af: Lumen Bioscience, Inc.

Et fase 2, randomiseret, dobbeltblindt, placebokontrolleret studie af LMN-201 til forebyggelse af tilbagefald af C. Difficile-infektion

This is a multisite study to evaluate the safety, tolerability, and efficacy of LMN-201 in participants recently diagnosed with CDI who are scheduled to receive or are receiving SOC antibiotic therapy against C. difficile.

Studieoversigt

Status

Aktiv, ikke rekrutterende

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

375

Fase

  • Fase 2
  • Fase 3

Kontakter og lokationer

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

Studiesteder

    • California
      • Escondido, California, Forenede Stater, 90027
        • Kaiser Permanente
    • Connecticut
      • Hamden, Connecticut, Forenede Stater, 06518
        • Gastroenterology Center of Connecticut
    • Florida
      • Tampa, Florida, Forenede Stater, 33606
        • University of South Florida
    • Illinois
      • Burr Ridge, Illinois, Forenede Stater, 60527
        • Metro Infectious Disease Consultants, LLC
    • Kentucky
      • Lexington, Kentucky, Forenede Stater, 40503
        • Baptist Health Research
    • Michigan
      • Detroit, Michigan, Forenede Stater, 48202
        • Henry Ford Health System
    • Minnesota
      • Minneapolis, Minnesota, Forenede Stater, 55455
        • University of Minnesota
      • Rochester, Minnesota, Forenede Stater, 55905
        • Mayo Clinic - Rochester
    • New York
      • New York, New York, Forenede Stater, 10021
        • Weill Cornell Medicine
    • North Carolina
      • Mount Airy, North Carolina, Forenede Stater, 27030
        • IMA Clinical Research
    • Texas
      • Houston, Texas, Forenede Stater, 77030
        • MD Anderson Cancer Center
    • Virginia
      • Annandale, Virginia, Forenede Stater, 22003
        • Clinical Alliance for Infectious Diseases - Infectious Diseases, LLC
      • Charlottesville, Virginia, Forenede Stater, 22903
        • University of Virginia School of Medicine
      • Springfield, Virginia, Forenede Stater, 22015
        • Kaiser Permanente-Mid Atlantic
    • Wisconsin
      • Madison, Wisconsin, Forenede Stater, 53792
        • UW Health University 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

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. Male or female, aged 18 or older.
  2. Diagnosis of CDI defined as a new or recent history of 3 or more bowel movements per day with a loose or watery consistency (Bristol Stool Scale 5, 6, or 7); a positive stool C. difficile toxin B immunoassay (stool collected no more than 7 days before first dose of LMN-201/placebo), and no other likely explanation for diarrhea. NOTE: Diarrhea is not required to be present on the day of enrollment.
  3. Provision of signed and dated informed consent form.
  4. Scheduled to receive or planning to receive a ≤28-day course of SOC antibiotic therapy for CDI. Participant must have been diagnosed with CDI for 7 or fewer days at time of initial study drug administration. SOC antibiotic therapy is defined as the receipt of oral fidaxomicin or oral metronidazole or oral vancomycin (see Section 8.2.6)
  5. May be on systemic antibiotics for an infection unrelated to the gastrointestinal tract.
  6. Ability to take oral medication and willingness to adhere to the study medication regimen.
  7. Stated willingness and ability to comply with all study procedures and availability for the duration of the study and investigator believes individual will complete the study.
  8. Access to a mobile smartphone.
  9. For females of reproductive potential: use of highly effective contraception for at least 4 weeks prior to screening and agreement to use such a method during study participation and for an additional 4 weeks after the end of study drug administration.
  10. For males of reproductive potential: agreement to use condoms or other methods to ensure effective contraception with partner during study participation and for an additional 4 weeks after the end of study drug administration.

Exclusion Criteria:

  1. Fulminant C. difficile colitis.

  2. Admitted or expect to be admitted to an intensive care unit.

  3. Underlying gastrointestinal disorder characterized by diarrhea including but not limited to chronic ulcerative colitis, Crohn's disease, celiac sprue, short bowel syndrome, dumping syndrome following gastrectomy, pancreatic insufficiency, enteric parasitic infection, viral enteritis, bacterial enteritis (salmonella, shigella, ETEC, etc.).

  4. Neutropenia (absolute neutrophil count of < 1000 per microliter for any reason).

  5. Current or previous treatment in past 3 months with any therapy likely to influence the outcome of this study, including but not limited to the following:

    1. Bezlotoxumab (Zinplava, Merck & Co.), or another antibody against C. difficile toxin(s)
    2. C. difficile vaccine
    3. SER-109 (Seres Therapeutics)
    4. CP101 (Finch Therapeutics)
    5. VE303 (Vedanta Therapeutics)
    6. Fecal microbiota transplant
    7. Current therapy with oral exchange resins
    8. Protracted exposure to mu-agonist opioids and/or anticholinergic medication prescribed for diarrheal symptoms (unable to stop mu-agonist opioid treatment unless on a stable dose as of onset of diarrhea and no increase in dose planned for the duration of the study.)
  6. Treatment with SOC antibiotic therapy is planned for longer than a 28-day period.

  7. Pregnancy, anticipated pregnancy, or breastfeeding.

  8. Inability or unwillingness to swallow numerous, relatively large capsules containing study drug or placebo because of a swallowing disorder or dysphagia.

  9. Inability to pass swallowed capsules into the distal small intestine because of gastroparesis, repetitive vomiting, or anatomic narrowing in the esophagus, stomach, or small intestine.

  10. Psychiatric illness that would affect compliance with medications, study capsules, or follow-up.

  11. Status as an inmate, residential mental health program, or residential substance abuse program.

  12. Terminal illness with limited life expectancy of less than 24 weeks.

  13. Poor concurrent medical risks with clinically significant co-morbid disease such that, in the opinion of the investigator, the patient should not be enrolled.

  14. Any other condition that, in the opinion of the investigator, would jeopardize the safety or rights of the individual, would make it unlikely for the individual to complete the study, or would confound the results of the study.

    • Note: Use of probiotics and other food supplements (e.g., yogurt, kefir, kimchi, etc.) are not exclusionary.
    • Note: Assuming participants meet all of the inclusion criteria and none of the exclusion criteria, participants with underlying malignancy with a good life expectancy in the study are not excluded.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Firedobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Placebo komparator: Placebo

Doses of placebo will be delivered as identical-appearing cornstarch with coloring in size 00, white, opaque, capsules.

Eksperimentel: Sentinel kohorte

LMN-201 consists of orally delivered whole, dried, non-viable biomass of spirulina (Arthrospira platensis) grown from 4 separate strains, each of which has been engineered to express one of the following therapeutic proteins:

  • 3 toxin-binding proteins that bind and inhibit C. difficile toxin B (TcdB), an essential virulence factor for C. difficile
  • 1 lysozyme-like enzyme that selectively degrades the cell wall of C. difficile and causes rapid destruction of the organism
Aktiv komparator: LMN-201

LMN-201 consists of orally delivered whole, dried, non-viable biomass of spirulina (Arthrospira platensis) grown from 4 separate strains, each of which has been engineered to express one of the following therapeutic proteins:

  • 3 toxin-binding proteins that bind and inhibit C. difficile toxin B (TcdB), an essential virulence factor for C. difficile
  • 1 lysozyme-like enzyme that selectively degrades the cell wall of C. difficile and causes rapid destruction of the organism

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Proportion of participants who achieve global cure
Tidsramme: Up to 16 weeks after initiation of therapy

Proportion of total participants with both successful initial CDI treatment and no CDI recurrence during the Prevention and Observation Phases (by treatment assignment).

Up to 16 weeks after initiation of therapy

Samarbejdspartnere og efterforskere

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

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)

29. august 2024

Primær færdiggørelse (Faktiske)

31. august 2026

Studieafslutning (Anslået)

1. december 2026

Datoer for studieregistrering

Først indsendt

8. april 2022

Først indsendt, der opfyldte QC-kriterier

8. april 2022

Først opslået (Faktiske)

15. april 2022

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

1. oktober 2026

Sidst verificeret

1. oktober 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • CDI02
  • CDMRP-PR221885 (Andet bevillings-/finansieringsnummer: CDMRP)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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