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En prøve for å evaluere effekten av CD388 på immunogeniteten til Fluzone® HD-vaksinen

En fase 1, dobbeltblind, randomisert studie for å evaluere sikkerhet og immunogenisitet av Fluzone® høy-dose influensavaksine når den administreres samtidig med CD388, et nytt langtidsvirkende antiviralt konjugat for forebygging av influensa

Approximately one billion cases of seasonal influenza occur annually. Of these, 3 to 5 million illnesses are severe and responsible for up to 650,000 deaths per year (WHO 2025). Yearly administration of an influenza vaccine for the prevention of influenza is currently recommended. However, the real-world vaccine effectiveness varied from 10% to 60% in the general population across the years of 2004 to 2024, with effectiveness in most years below 50% (CDC 2025) and decreasing to as low as 5% in immunocompromised individuals (Hughes 2021). Researchers are looking for other ways to prevent severe illness from the influenza virus.

The goals of this study are to learn if:

  • MK-1406 (formerly CD388) is safe to take with Fluzone®
  • MK-1406 affects the immune response to Fluzone®

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

This is a Phase 1, double-blind, randomized trial to evaluate the immunogenicity of Fluzone® HD influenza vaccine when concomitantly administered with either MK-1406 or placebo, in healthy participants. This study will also evaluate the safety and tolerability of MK-1406 when administered with Fluzone® High-Dose (HD) compared to Fluzone® HD with placebo.

Studietype

Intervensjonell

Registrering (Antatt)

710

Fase

  • Fase 1

Kontakter og plasseringer

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

Studiekontakt

Studiesteder

    • California
      • Glendale, California, Forente stater, 91206
        • Rekruttering
        • Parexel ( Site 0001)
        • Ta kontakt med:
          • Study Coordinator
          • Telefonnummer: 888-228-7425
    • Maryland
      • Baltimore, Maryland, Forente stater, 21225
        • Rekruttering
        • Parexel ( Site 0002)
        • Ta kontakt med:
          • Study Coordinator
          • Telefonnummer: 410-350-3200

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

18 år til 49 år (Voksen)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

The main inclusion criteria include but are not limited to the following:

  • Be ≥18 to ≤49 years of age
  • Be deemed healthy by the Investigator
  • Have not received any seasonal influenza vaccine and have not had a diagnosed or suspected influenza infection within 12 months prior to Day 1 of the trial

Exclusion Criteria:

The main exclusion criteria include but are not limited to the following:

  • Had an active malignancy within 5 years prior to screening, except basal cell or squamous cell skin cancer. Any history of breast cancer or melanoma is exclusionary.
  • Has previously been diagnosed with Guillain-Barre Syndrome following a previous influenza vaccination.

Studieplan

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

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Forebygging
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Firemannsrom

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Fluzone® High-Dose (HD) plus MK-1406

Participants will receive open-label Fluzone® HD influenza vaccine by intramuscular (IM) injection plus MK-1406 by subcutaneous (SC) injection on Day 1.

Fluzone® HD injectable suspension administered by intramuscular (IM) injection

Andre navn:
  • Fluzone® høydose influensavaksine

MK-1406 liquid for injection administered subcutaneously

Andre navn:
  • CD388
Placebo komparator: Fluzone® HD plus Placebo

Participants will receive open-label Fluzone® HD influenza vaccine by IM injection plus placebo by SC injection on Day 1.

Fluzone® HD injectable suspension administered by intramuscular (IM) injection

Andre navn:
  • Fluzone® høydose influensavaksine

MK-1406 matched liquid for SC injection

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Geometric Mean of Hemagglutinin Inhibition (HAI) Titers Against the Influenza Strains Contained in the Vaccine Among Participants Receiving Concomitant Fluzone® High-Dose (HD) and MK-1406 Compared to Participants Who Receive Fluzone® HD and Placebo
Tidsramme: Predose (Day 1), Day 15 and Day 29

Geometric mean of HAI titers at 2-weeks and 4-weeks post-trial intervention against the influenza virus strains contained in the vaccine among participants receiving concomitant Fluzone® HD influenza vaccine and MK-1406 compared to participants who receive Fluzone® HD and placebo will be determined. HAI testing will be performed using validated methods in accordance with applicable Good Clinical Laboratory Practice (GCLP) and laboratory Standard Operating Procedures (SOPs). Geometric Mean Titers (GMTs) will be summarized by treatment group and influenza strain.

Predose (Day 1), Day 15 and Day 29
Percentage of Participants with Seroconversion Rates against the Influenza Strains Contained in the Vaccine Among Participants Receiving Concomitant Fluzone® HD and MK-1406 Compared to Participants Who Receive Fluzone® HD and Placebo
Tidsramme: Predose (Day 1), Day 15 and Day 29

Seroconversion is defined as a 4-fold increase in influenza titer as measured by HAI assay at each visit compared to baseline. Seroconversion rates at 2-weeks and 4-weeks post-trial intervention against the influenza virus strains contained in the vaccine among participants receiving concomitant Fluzone® HD influenza vaccine and MK-1406 compared to participants who receive Fluzone® HD and placebo will be determined. Seroconversion rates will be summarized by treatment group and influenza strain.

Predose (Day 1), Day 15 and Day 29

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Percentage of participants with ≥1 Adverse Event (AE)
Tidsramme: Up to approximately Day 29

An AE is defined as any untoward medical occurrence in a participant administered a pharmaceutical product temporally associated with the use of study treatment, whether or not considered related to the study treatment.

Up to approximately Day 29
Percentage of Participants Who Discontinued from the Study Due to an Adverse Event
Tidsramme: Up to approximately Day 29

An AE is defined as any untoward medical occurrence in a participant administered a pharmaceutical product temporally associated with the use of study treatment, whether or not considered related to the study treatment. The percentage of participants who discontinued the study because of an AE (as defined above) will be assessed.

Up to approximately Day 29
Percentage of Participants with a Solicited Injection-site Adverse Event
Tidsramme: Up to approximately Day 8 post-dose

An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The solicited injection-site AEs assessed are redness/erythema, swelling, and tenderness/pain.

Up to approximately Day 8 post-dose
Percentage of Participants with a Solicited Systemic Adverse Event
Tidsramme: Up to approximately Day 29

An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. The solicited systemic AEs assessed are muscle pain/myalgia, joint pain/arthralgia, headache, and tiredness/fatigue.

Up to approximately Day 29

Samarbeidspartnere og etterforskere

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

Sponsor

Etterforskere

  • Studieleder: Medical Director, Merck Sharp & Dohme LLC

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

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 (Faktiske)

8. november 2025

Primær fullføring (Antatt)

31. desember 2026

Studiet fullført (Antatt)

31. desember 2026

Datoer for studieregistrering

Først innsendt

10. desember 2025

Først innsendt som oppfylte QC-kriteriene

10. desember 2025

Først lagt ut (Faktiske)

23. desember 2025

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

4. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

3. november 2026

Sist bekreftet

1. november 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • 1406-007
  • CD388.SQ.1.08 (Annen identifikator: Cidara)
  • MK-1406-007 (Annen identifikator: MSD)

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

JA

IPD-planbeskrivelse

https://trialstransparency.msdclinicaltrials.com/pdf/ProcedureAccessClinicalTrialData.pdf

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Ja

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .