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Un estudio sobre vacunas de ARN modificado contra la influenza en adultos sanos

9 de junio de 2026 actualizado por: Pfizer

UN ESTUDIO PARA EVALUAR LA SEGURIDAD, TOLERABILIDAD E INMUNOGENICIDAD DE VACUNAS DE ARN MODIFICADAS CONTRA LA INFLUENZA EN ADULTOS SALUDABLES

El propósito de este estudio es saber si las vacunas de ARN modificado (modRNA) para la prevención de la influenza son:

  • seguro; y
  • cómo estas vacunas producen una respuesta inmune en adultos generalmente sanos. La respuesta inmune es la forma en que el cuerpo se protege contra cosas que considera dañinas o extrañas.

El ARN (también llamado ácido ribonucleico) es uno de los dos tipos de ácido nucleico producido por las células. El ARN contiene información que ha sido copiada del ADN (el otro tipo de ácido nucleico). Las células producen varias formas diferentes de ARN y cada forma tiene una función específica en la célula. Muchas formas de ARN tienen funciones relacionadas con la producción de proteínas. El ARN también es el material genético de algunos virus en lugar de ADN. El ARN se puede producir en el laboratorio y utilizar en estudios de investigación. También llamado ácido ribonucleico.

Influenza es el término utilizado para referirse a la enfermedad gripal. Es una infección causada por un virus que afecta la boca, la nariz y la garganta.

El estudio busca participantes que:

  • tener al menos 18 años de edad
  • no haber recibido una vacuna contra la influenza en los últimos 6 meses
  • son generalmente sanos

Este estudio se dividirá en tres subestudios: subestudio A (SSA), subestudio B (SSB) y subestudio C (SSC).

Todos los participantes, independientemente del subestudio, recibirán 1 dosis de cualquiera de las siguientes vacunas mediante una inyección en el brazo:

  • 1 de las vacunas contra la influenza modRNA que se está estudiando; o
  • una vacuna contra la influenza aprobada para su uso en su respectivo grupo de edad.

Los participantes participarán en este estudio durante aproximadamente 6 meses. Durante este tiempo, los participantes tendrán al menos 3 visitas a la clínica.

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Actual)

1202

Fase

  • Fase 2
  • Fase 1

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

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

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

Sí

Descripción

Criterios clave de inclusión

Se aplica a los 3 subestudios:

  • participantes ≥18 años de edad.
  • participantes generalmente sanos.

SOLO subestudio C:

- recibo de la vacuna contra la influenza autorizada para la temporada de influenza 2023-2024 hace al menos 6 meses.

Criterios de exclusión clave

Los 3 subestudios:

  • diagnóstico de influenza (mediante pruebas clínicas) en los últimos 6 meses.
  • Individuos inmunocomprometidos con inmunodeficiencia conocida o sospechada.
  • recepción de cualquier vacuna contra la influenza en investigación o autorizada dentro de los 6 meses.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Prevención
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Cuadruplicar

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: SSA: Vacuna contra la influenza ModRNA 2A
- Dosis única el día 1
Inyección intramuscular
Experimental: SSA: Vacuna contra la influenza ModRNA 3A
- Dosis única el día 1
Inyección intramuscular
Experimental: SSA: Vacuna contra la influenza ModRNA 4A
- Dosis única el día 1
Inyección intramuscular
Experimental: SSA: Vacuna contra la influenza ModRNA 5A
- Dosis única el día 1
Inyección intramuscular
Comparador activo: SSA: QIV1
- Dosis única el día 1
Inyección intramuscular
Experimental: SSB: Vacuna contra la influenza ModRNA 3B
- Dosis única el día 1
Inyección intramuscular
Experimental: SSB: Vacuna contra la influenza ModRNA 4B
- Dosis única el día 1
Inyección intramuscular
Experimental: SSB: Vacuna contra la influenza ModRNA 5B
- Dosis única el día 1
Inyección intramuscular
Comparador activo: SSB: QIV2
- Dosis única el día 1
Inyección intramuscular
Comparador activo: SSB: QIV3
- Dosis única el día 1
Inyección intramuscular
Experimental: SSC: vacuna contra la influenza ModRNA 3C
- Dosis única el día 1
Inyección intramuscular
Experimental: SSC: Vacuna contra la influenza ModRNA 4C
- Dosis única el día 1
Inyección intramuscular
Experimental: SSC: Vacuna contra la influenza ModRNA 5C
- Dosis única el día 1
Inyección intramuscular
Experimental: SSC: Vacuna contra la influenza ModRNA 6C
- Dosis única el día 1
Inyección intramuscular
Experimental: SSC: Vacuna contra la influenza ModRNA 7C
- Dosis única el día 1
Inyección intramuscular
Experimental: SSC: Vacuna contra la influenza ModRNA 8C
- Dosis única el día 1
Inyección intramuscular
Experimental: SSC: Vacuna contra la influenza ModRNA 9C
- Dosis única el día 1
Inyección intramuscular
Comparador activo: SSC: QIV2
- Dosis única el día 1
Inyección intramuscular
Comparador activo: SSC: QIV3
- Dosis única el día 1
Inyección intramuscular

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
SSA: Percentage of Participants With Local Reactions for up to 7 Days Following Vaccination
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
SSA: Geometric Mean Titers (GMTs) of Strain-Specific Hemagglutination Inhibition Assay (HAI) Titers at Baseline and 4 Weeks After Vaccination
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Investigadores

  • Director de estudio: Pfizer CT.gov Call Center, Pfizer

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

23 de mayo de 2024

Finalización primaria (Actual)

5 de febrero de 2025

Finalización del estudio (Actual)

5 de febrero de 2025

Fechas de registro del estudio

Enviado por primera vez

24 de mayo de 2024

Primero enviado que cumplió con los criterios de control de calidad

30 de mayo de 2024

Publicado por primera vez (Actual)

31 de mayo de 2024

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

12 de junio de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

9 de junio de 2026

Última verificación

1 de junio de 2026

Más información

Términos relacionados con este estudio

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

Pfizer proporcionará acceso a datos individuales no identificados de los participantes y a documentos del estudio relacionados (p. ej. protocolo, Plan de Análisis Estadístico (SAP), Informe de Estudio Clínico (CSR)) previa solicitud de investigadores calificados, y sujeto a ciertos criterios, condiciones y excepciones. Puede encontrar más detalles sobre los criterios de intercambio de datos de Pfizer y el proceso para solicitar acceso en: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

Sí

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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