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Une étude sur les vaccins à ARN modifié contre la grippe chez les adultes en bonne santé

9 juin 2026 mis à jour par: Pfizer

UNE ÉTUDE POUR ÉVALUER LA SÉCURITÉ, LA TOLÉRABILITÉ ET L'IMMUNOGÉNICITÉ DES VACCINS À ARN MODIFIÉ CONTRE LA GRIPPE CHEZ LES ADULTES EN BONNE SANTÉ

Le but de cette étude est de savoir si les vaccins à ARN modifié (modRNA) pour la prévention de la grippe sont :

  • sûr; et
  • comment ces vaccins produisent une réponse immunitaire chez des adultes généralement en bonne santé. La réponse immunitaire est la façon dont le corps se protège contre les choses qu’il considère comme nocives ou étrangères.

L'ARN (également appelé acide ribonucléique) est l'un des deux types d'acide nucléique produits par les cellules. L'ARN contient des informations qui ont été copiées à partir de l'ADN (l'autre type d'acide nucléique). Les cellules produisent plusieurs formes différentes d’ARN, et chaque forme remplit une fonction spécifique dans la cellule. De nombreuses formes d’ARN ont des fonctions liées à la fabrication de protéines. L'ARN est également le matériel génétique de certains virus au lieu de l'ADN. L’ARN peut être fabriqué en laboratoire et utilisé dans des études de recherche. Aussi appelé acide ribonucléique.

La grippe est un terme utilisé pour désigner la grippe. Il s’agit d’une infection causée par un virus qui affecte la bouche, le nez et la gorge.

L'étude recherche des participants qui :

  • sont âgés d'au moins 18 ans
  • n'avez pas reçu de vaccin contre la grippe au cours des 6 derniers mois
  • sont généralement en bonne santé

Cette étude sera divisée en trois sous-études : sous-étude A (SSA), sous-étude B (SSB) et sous-étude C (SSC).

Tous les participants, quelle que soit la sous-étude, recevront 1 dose de l'un des vaccins suivants sous forme d'injection dans le bras :

  • 1 des vaccins antigrippaux modRNA actuellement étudiés ; ou
  • un vaccin contre la grippe approuvé pour une utilisation dans leur groupe d'âge respectif.

Les participants seront impliqués dans cette étude pendant environ 6 mois. Pendant ce temps, les participants auront au moins 3 visites à la clinique.

Aperçu de l'étude

Type d'étude

Interventionnel

Inscription (Réel)

1202

Phase

  • Phase 2
  • La phase 1

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

    • Alabama
      • Mobile, Alabama, États-Unis, 36608
        • AMR Clinical
    • Arizona
      • Scottsdale, Arizona, États-Unis, 85260
        • Headlands Research - Scottsdale
    • California
      • Anaheim, California, États-Unis, 92801
        • Anaheim Clinical Trials, LLC
      • Lake Forest, California, États-Unis, 92630
        • Orange County Research Center
      • San Diego, California, États-Unis, 92103
        • Artemis Institute for Clinical Research
      • Walnut Creek, California, États-Unis, 94598
        • Diablo Clinical Research, Inc.
    • Connecticut
      • Milford, Connecticut, États-Unis, 06460
        • Clinical Research Consulting
    • Florida
      • Hialeah, Florida, États-Unis, 33012
        • Indago Research & Health Center, Inc
      • Hollywood, Florida, États-Unis, 33024
        • Research Centers of America
      • Hollywood, Florida, États-Unis, 33024
        • Research Centers of America ( Hollywood )
      • Miami Lakes, Florida, États-Unis, 33014
        • Palm Springs Community Health Center
      • Orlando, Florida, États-Unis, 32801
        • Clinical Neuroscience Solutions, Inc.
      • Orlando, Florida, États-Unis, 32819
        • Headlands Research Orlando
      • South Miami, Florida, États-Unis, 33143
        • Qps-Mra, Llc
    • Hawaii
      • Honolulu, Hawaii, États-Unis, 96814
        • East-West Medical Research Institute
    • Louisiana
      • New Orleans, Louisiana, États-Unis, 70119
        • Alliance for Multispecialty Research, LLC
    • Minnesota
      • Saint Paul, Minnesota, États-Unis, 55114
        • Prism Research LLC dba Nucleus Network
    • Missouri
      • Chesterfield, Missouri, États-Unis, 63005
        • Clinical Research Professionals
      • Kansas City, Missouri, États-Unis, 64114
        • Alliance for Multispecialty Research, LLC
    • New York
      • Rochester, New York, États-Unis, 14609
        • Rochester Clinical Research, LLC
    • North Carolina
      • Durham, North Carolina, États-Unis, 27703
        • Duke Vaccine and Trials Unit
      • Raleigh, North Carolina, États-Unis, 27612
        • M3 Wake Research, Inc.
    • Pennsylvania
      • Philadelphia, Pennsylvania, États-Unis, 19107
        • DM Clinical Research - Philadelphia
    • Texas
      • Brownsville, Texas, États-Unis, 78526
        • Headlands Horizons LLC
      • Mesquite, Texas, États-Unis, 75149
        • SMS Clinical Research
      • San Antonio, Texas, États-Unis, 78229
        • Clinical Trials of Texas, LLC
      • San Antonio, Texas, États-Unis, 78229
        • Clinical Trials of Texas, LLC dba Flourish Research
      • Tomball, Texas, États-Unis, 77375
        • Dynamed Clinical Research, LP d/b/a DM Clinical Research
    • Utah
      • Salt Lake City, Utah, États-Unis, 84109
        • J. Lewis Research, Inc. / Foothill Family Clinic
      • Salt Lake City, Utah, États-Unis, 84121
        • J. Lewis Research, Inc. / Foothill Family Clinic South
    • Virginia
      • Charlottesville, Virginia, États-Unis, 22911
        • Charlottesville Medical Research
      • Norfolk, Virginia, États-Unis, 23502
        • AMR Clinical

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Oui

La description

Critères d'inclusion clés

S'applique aux 3 sous-études :

  • participants âgés de ≥18 ans.
  • participants généralement en bonne santé.

Sous-étude C UNIQUEMENT :

- réception d'un vaccin antigrippal agréé pour la saison grippale 2023-2024 il y a au moins 6 mois.

Critères d'exclusion clés

Les 3 sous-études :

  • diagnostic de grippe (par tests cliniques) au cours des 6 derniers mois.
  • personnes immunodéprimées présentant un déficit immunitaire connu ou suspecté
  • réception de tout vaccin antigrippal expérimental ou homologué dans les 6 mois.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: La prévention
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Quadruple

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: SSA : Vaccin contre la grippe ModRNA 2A
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSA : Vaccin contre la grippe ModRNA 3A
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSA : Vaccin contre la grippe ModRNA 4A
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSA : Vaccin contre la grippe ModRNA 5A
- Dose unique le jour 1
Injection intramusculaire
Comparateur actif: SSA : QIV1
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSB : vaccin contre la grippe ModRNA 3B
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSB : vaccin contre la grippe ModRNA 4B
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSB : vaccin contre la grippe ModRNA 5B
- Dose unique le jour 1
Injection intramusculaire
Comparateur actif: BLU : QIV2
- Dose unique le jour 1
Injection intramusculaire
Comparateur actif: BLU : QIV3
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSC : Vaccin contre la grippe ModRNA 3C
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSC : Vaccin contre la grippe ModRNA 4C
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSC : Vaccin contre la grippe ModRNA 5C
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSC : Vaccin contre la grippe ModRNA 6C
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSC : Vaccin contre la grippe ModRNA 7C
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSC : Vaccin contre la grippe ModRNA 8C
- Dose unique le jour 1
Injection intramusculaire
Expérimental: SSC : Vaccin contre la grippe ModRNA 9C
- Dose unique le jour 1
Injection intramusculaire
Comparateur actif: CSS : QIV2
- Dose unique le jour 1
Injection intramusculaire
Comparateur actif: CSS : QIV3
- Dose unique le jour 1
Injection intramusculaire

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
SSA: Percentage of Participants With Local Reactions for up to 7 Days Following Vaccination
Délai: From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
Local reactions included pain at the injection site, redness and swelling and were recorded by participants in the electronic dairy (e-diary) or by investigators in case report form (CRF) after vaccination. All local reactions were graded based on center for biologics evaluation and research (CBER) toxicity guidelines as Grade 1 (Mild), Grade 2 (Moderate), Grade 3 (Severe) and Grade 4 (potentially life-threatening). In this outcome measure, data is reported as percentage of participants with any local reaction of any grade.
From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
SSB: Percentage of Participants With Local Reactions for up to 7 Days Following Vaccination
Délai: From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
Local reactions included pain at the injection site, redness and swelling and were recorded by participants in the e-diary or by investigators in CRF after vaccination. All local reactions were graded based on CBER toxicity guidelines as Grade 1 (Mild), Grade 2 (Moderate), Grade 3 (Severe) and Grade 4 (potentially life-threatening). In this outcome measure, data is reported as percentage of participants with any local reaction of any grade.
From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
SSC: Percentage of Participants With Local Reactions for up to 7 Days Following Vaccination
Délai: From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
Local reactions included pain at the injection site, redness and swelling and were recorded by participants in the e-diary or by investigators in CRF after vaccination. All local reactions were graded based on CBER toxicity guidelines as Grade 1 (Mild), Grade 2 (Moderate), Grade 3 (Severe) and Grade 4 (potentially life-threatening). In this outcome measure, data is reported as percentage of participants with any local reaction of any grade.
From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
SSA: Percentage of Participants With Systemic Events for up to 7 Days Following Vaccination
Délai: From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
Systemic events (fever, vomiting, diarrhea, headache, fatigue, chills, new or worsened muscle pain and joint pain) were recorded by participants in the e-diary or by investigators in CRF after vaccination. All systemic events were graded based on CBER toxicity guidelines as Grade 1 (Mild), Grade 2 (Moderate), Grade 3 (Severe) and Grade 4 (potentially life-threatening). In this outcome measure, data is reported as percentage of participants with any systemic events of any grade.
From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
SSB: Percentage of Participants With Systemic Events for up to 7 Days Following Vaccination
Délai: From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
Systemic events (fever, vomiting, diarrhea, headache, fatigue, chills, new or worsened muscle pain and joint pain) were recorded by participants in the e-diary or by investigators in CRF after vaccination. All systemic events were graded based on CBER toxicity guidelines as Grade 1 (Mild), Grade 2 (Moderate), Grade 3 (Severe) and Grade 4 (potentially life-threatening). In this outcome measure, data is reported as percentage of participants with any systemic events of any grade.
From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
SSC: Percentage of Participants With Systemic Events for up to 7 Days Following Vaccination
Délai: From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
Systemic events (fever, vomiting, diarrhea, headache, fatigue, chills, new or worsened muscle pain and joint pain) were recorded by participants in the e-diary or by investigators in CRF after vaccination. All systemic events were graded based on CBER toxicity guidelines as Grade 1 (Mild), Grade 2 (Moderate), Grade 3 (Severe) and Grade 4 (potentially life-threatening). In this outcome measure, data is reported as percentage of participants with any systemic events of any grade.
From Day 1 through Day 7 after study vaccination [Vaccination on Day 1]
SSA: Percentage of Participants With Adverse Events (AEs) From Vaccination Through 4 Weeks After Vaccination
Délai: From study vaccination on Day 1 through 4 weeks after study vaccination
An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Only AEs collected by non-systematic assessment (excluding local reactions and systematic events) were included in this outcome measure.
From study vaccination on Day 1 through 4 weeks after study vaccination
SSB: Percentage of Participants With AEs From Vaccination Through 4 Weeks After Vaccination
Délai: From study vaccination on Day 1 through 4 weeks after study vaccination
An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Only AEs collected by non-systematic assessment (excluding local reactions and systematic events) were included in this outcome measure.
From study vaccination on Day 1 through 4 weeks after study vaccination
SSC: Percentage of Participants With AEs From Vaccination Through 4 Weeks After Vaccination
Délai: From study vaccination on Day 1 through 4 weeks after study vaccination
An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Only AEs collected by non-systematic assessment (excluding local reactions and systematic events) were included in this outcome measure.
From study vaccination on Day 1 through 4 weeks after study vaccination
SSA: Percentage of Participants With SAEs From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An SAE was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, any other pre-specified criteria in protocol of the study or other important medical event judged by the investigator.
From study vaccination on Day 1 through 6 months after study vaccination
SSB: Percentage of Participants With SAEs From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An SAE was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, any other pre-specified criteria in protocol of the study or other important medical event judged by the investigator.
From study vaccination on Day 1 through 6 months after study vaccination
SSC: Percentage of Participants With SAEs From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An SAE was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, any other pre-specified criteria in protocol of the study or other important medical event judged by the investigator.
From study vaccination on Day 1 through 6 months after study vaccination
SSA: Percentage of Participants With Medically Attended Adverse Events (MAEs) From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility.
From study vaccination on Day 1 through 6 months after study vaccination
SSB: Percentage of Participants With MAEs From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility.
From study vaccination on Day 1 through 6 months after study vaccination
SSC: Percentage of Participants With MAEs From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An MAE was defined as a non-serious AE that resulted in an evaluation at a medical facility.
From study vaccination on Day 1 through 6 months after study vaccination
SSA: Percentage of Participants With Newly Diagnosed Chronic Medical Conditions (NDCMCs) From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects (e.g., asthma).
From study vaccination on Day 1 through 6 months after study vaccination
SSB: Percentage of Participants With NDCMCs From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects (e.g., asthma).
From study vaccination on Day 1 through 6 months after study vaccination
SSC: Percentage of Participants With NDCMCs From Vaccination Through 6 Months After Vaccination
Délai: From study vaccination on Day 1 through 6 months after study vaccination
An NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or otherwise long-lasting in its effects (e.g., asthma).
From study vaccination on Day 1 through 6 months after study vaccination

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
SSA: Geometric Mean Titers (GMTs) of Strain-Specific Hemagglutination Inhibition Assay (HAI) Titers at Baseline and 4 Weeks After Vaccination
Délai: Baseline (before study vaccination on Day 1), 4 weeks after study vaccination
GMTs and the corresponding 2-sided 95% confidence intervals (CIs) were calculated by exponentiating the mean logarithm of the titers and the corresponding CIs (based on the Student t distribution).
Baseline (before study vaccination on Day 1), 4 weeks after study vaccination
SSA: Geometric Mean Fold Rise (GMFR) of Strain-Specific HAI Titers From Before Vaccination to 4 Weeks After Vaccination
Délai: From before study vaccination on Day 1 up to 4 weeks after study vaccination
GMFR was defined as the geometric mean of the fold rise in the assay results from before vaccination to a specified time point after vaccination.
From before study vaccination on Day 1 up to 4 weeks after study vaccination
SSA: Percentage of Participants Achieving HAI Seroconversion for Each Strain at 4 Weeks After Vaccination
Délai: 4 weeks after study vaccination
Seroconversion was defined as an HAI titer <1:10 prior to vaccination and >=1:40 at the time point of interest, or an HAI titer of >=1:10 prior to vaccination with at least a 4-fold rise at the time point of interest.
4 weeks after study vaccination
SSA: Percentage of Participants With HAI Titers >=1:40 For Each Strain at Baseline and 4 Weeks After Vaccination
Délai: Baseline (before study vaccination on Day 1), 4 weeks after study vaccination
This measure is for percentage of participants achieving HAI titers >=1:40 for each strain.
Baseline (before study vaccination on Day 1), 4 weeks after study vaccination
SSB: GMTs of Strain-Specific HAI Titers at Baseline and 4 Weeks After Vaccination
Délai: Baseline (before study vaccination on Day 1), 4 weeks after study vaccination
Baseline (before study vaccination on Day 1), 4 weeks after study vaccination
SSB: GMFRs of Strain-Specific HAI Titers From Before Vaccination to 4 Weeks After Vaccination
Délai: From before study vaccination on Day 1 up to 4 weeks after study vaccination
From before study vaccination on Day 1 up to 4 weeks after study vaccination
SSB: Percentage of Participants Achieving HAI Seroconversion for Each Strain at 4 Weeks After Vaccination
Délai: 4 weeks after study vaccination
4 weeks after study vaccination
SSB: Percentage of Participants With HAI Titers >=1:40 For Each Strain at Baseline and 4 Weeks After Vaccination
Délai: Baseline (before study vaccination on Day 1), 4 weeks after study vaccination
This measure is for percentage of participants achieving HAI titers >=1:40 for each strain.
Baseline (before study vaccination on Day 1), 4 weeks after study vaccination

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Les enquêteurs

  • Directeur d'études: Pfizer CT.gov Call Center, Pfizer

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

23 mai 2024

Achèvement primaire (Réel)

5 février 2025

Achèvement de l'étude (Réel)

5 février 2025

Dates d'inscription aux études

Première soumission

24 mai 2024

Première soumission répondant aux critères de contrôle qualité

30 mai 2024

Première publication (Réel)

31 mai 2024

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

12 juin 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

9 juin 2026

Dernière vérification

1 juin 2026

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • C4781013
  • NCT06436703 (Identificateur de registre: ClinicalTrials.gov)

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

OUI

Description du régime IPD

Pfizer donnera accès aux données individuelles anonymisées des participants et aux documents d'étude associés (par ex. protocole, Plan d'Analyse Statistique (SAP), Rapport d'Etude Clinique (CSR)) sur demande de chercheurs qualifiés, et sous réserve de certains critères, conditions et exceptions. De plus amples détails sur les critères de partage de données de Pfizer et le processus de demande d'accès sont disponibles à l'adresse : https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Oui

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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