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A Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1283 in Participants ≥6 Months to <12 Years of Age

2 de septiembre de 2026 actualizado por: ModernaTX, Inc.

A Phase 2, Randomized, Observer-Blind, Dose Ranging Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1283 in Participants ≥6 Months to <12 Years of Age

This study will evaluate 2 dose levels of mRNA-1283 in participants ≥6 months to <12 years to determine the optimal dose level per age group.

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Descripción detallada

mRNA-1283 will be administered at 2 different dose levels (Dose Level 1 and Dose Level 2), with mRNA-1273 serving as the active comparator. Dose Level 1 will be the lower dose, and Dose Level 2 will be the higher dose.

The study will consist of 2 cohorts. In Cohort 1, mRNA-1283 will be administered as a single dose to participants aged ≥2 to <12 years, regardless of prior coronavirus disease 2019 (COVID-19) vaccination status, with mRNA-1273 included as a comparator. In Cohort 2, mRNA-1283 will be administered as a 2-dose series to participants aged ≥6 months to <2 years who are previously unvaccinated for COVID-19, with mRNA-1273 included as a comparator.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

300

Fase

  • Fase 2

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.

Estudio Contacto

Ubicaciones de estudio

    • Buenos Aires
      • Ciudad Autonoma, Buenos Aires, Argentina
        • Fundacion Respirar - Consultorios Medicos Dra De Salvo
    • Santa Fe Province
      • Casilda, Santa Fe Province, Argentina
        • Instituto Medico de la Fundacion Estudios Clinicos
    • Tucumán Province
      • San Miguel de Tucumán, Tucumán Province, Argentina
        • Hospital del Nino Jesus
    • California
      • Ontario, California, Estados Unidos, 91762
        • Orange County Research Center
    • Florida
      • Miami, Florida, Estados Unidos, 33166
        • Hope Research Network
      • Miami, Florida, Estados Unidos, 33167
        • Spotlight Research Center - Internal Medicine
      • Miami Lakes, Florida, Estados Unidos, 33016
        • Indago Research and Health Cen
      • Tamarac, Florida, Estados Unidos, 33321
        • MplusM - D&H Tamarac Research Center
    • Illinois
      • Chicago, Illinois, Estados Unidos, 60621
        • Eagle Clinical Research, LLC
    • Michigan
      • Southfield, Michigan, Estados Unidos, 48075
        • Great Lakes Research Institute -Southfield
    • Ohio
      • South Euclid, Ohio, Estados Unidos, 44121
        • Senders Pediatrics
    • Texas
      • Beaumont, Texas, Estados Unidos, 77701
        • REX Clinical Trials
      • Brownsville, Texas, Estados Unidos, 78520
        • PanAmerican Clinical Research, LLC.
    • Utah
      • South Ogden, Utah, Estados Unidos, 84403
        • South Ogden Family Medicine
    • Virginia
      • Richmond, Virginia, Estados Unidos, 23226
        • Clinical Research Partners
    • Washington
      • Seattle, Washington, Estados Unidos, 98105
        • Childrens Hospital Regional Medical Center
    • Jalisco
      • Guadalajara, Jalisco, México
        • Centro de Investigacion Clinica y Medicina Traslacional (CIMeT)
    • Mexico City
      • Mexico City, Mexico City, México
        • Hospital Infantil de México Federico Gómez - Pediatric Gastroenterology
      • Mexico City, Mexico City, México
        • Instituto Nacional de Pediatría
    • Querétaro
      • Querétaro City, Querétaro, México
        • PanAmerican Clinical Research - Queretaro
    • Yucatán
      • Tizimín, Yucatán, México
        • Centro de Salud Tizimin
    • Provincia de Panamá
      • Calidonia, Provincia de Panamá, Panamá, 7094
        • CEVAXIN Avenida Mexico
      • La Chorrera, Provincia de Panamá, Panamá
        • CEVAXIN Chorrera
      • Panama City, Provincia de Panamá, Panamá
        • CEVAXIN 24 de Diciembre
      • Panama City, Provincia de Panamá, Panamá
        • Instituto de Investigaciones Cienti-ficas Y Servicios de Alta Tecnologia Asociacion de Interes Panama; . Centro de Investigación, Innovación y Gestión del Conocimiento de Ciudad de la Salud, Caja de Seguro social
    • Puerto Rico
      • Ponce, Puerto Rico, Puerto Rico
        • Ponce Health Sciences University
      • San Juan, Puerto Rico, Puerto Rico, 00907
        • BRCR Global
    • Distrito Nacional (Santo Domingo)
      • Cristo Rey, Distrito Nacional (Santo Domingo), República Dominicana, 10501
        • Medvacplus Srl Fundacion Clinica Cruz Jiminian
      • Santo Domingo, Distrito Nacional (Santo Domingo), República Dominicana, 10306
        • Instituto Dermatologico y Cirugia de Piel ''Dr. Huberto Bogaert Diaz'' (IDCP-DHBD)
    • La Altagracia Province
      • Salvaleón de Higüey, La Altagracia Province, República Dominicana
        • Hospital General y de Especialidades Nuestra Señora de la Altagracia
    • Nacional
      • Santo Domingo, Nacional, República Dominicana, 11901
        • Hospital Materno Infantil San Lorenzo De Los Mina

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

  • Niño

Acepta Voluntarios Saludables

Sí

Descripción

Key Inclusion Criteria:

  • Participant is male or female, between ≥2 years to <12 years of age for Cohort 1 or ≥6 months to <2 years of age for Cohort 2 (calculated from date of birth) at the time of signing the informed consent/assent.
  • Participant is in good general health as determined by medical evaluation including medical history and physical examination. Participants with chronic but stable conditions (eg, gastroesophageal reflux disease, asthma) may be eligible to enroll, provided the condition is well-controlled and not expected to interfere with study participation or outcomes.
  • For participants in Cohort 2: the participant was born at ≥37 weeks, with a minimum birth weight of 2.5 kilograms, without fetal growth restriction.
  • Female participants of nonchildbearing potential may be enrolled in the study. Nonchildbearing potential is defined as premenarche. The investigator is responsible for review of medical history, menstrual history, and recent sexual activity to decrease the risk for inclusion of a participant with an early undetected pregnancy. If childbearing potential is unclear (for example, amenorrhea in athletes) and a menstrual cycle cannot be confirmed before first dose of study intervention, additional evaluation should be considered.
  • Female participants who have reached menarche may be enrolled in the study if all of the following criteria are fulfilled:
  • Has a negative highly sensitive pregnancy test (urine or serum) as required by local regulations within 24 hours before the study intervention.
  • Is not currently chest/breastfeeding.
  • Has been using a highly effective contraceptive method or has abstained from all activities that could lead to pregnancy for at least 28 days prior to the study injection (Day 1). The investigator should evaluate the potential for contraceptive method failure (for example, noncompliance, recently initiated) in relationship to the study injection.
  • Has agreed to continue adequate contraception through the end of study. Contraceptive use by participants should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.

Key Exclusion Criteria:

  • History of SARS-CoV-2 infection within 3 months prior to enrollment.
  • Acutely ill or febrile (temperature ≥38.0℃elsius [100.4°Fahrenheit]) within 72 hours prior to or at the screening visit or Day 1. Participants who are acutely ill or febrile may be scheduled for a separate dosing visit within the protocol-specified window for screening and will retain their initially assigned participant number. Afebrile participants with minor illnesses can be enrolled at the discretion of the Investigator.
  • Any medical, psychiatric, or occupational condition, including reported history of drug, or alcohol abuse in the parent(s)/ legally authorized representative(s), that, in the opinion of the investigator, might pose additional risk due to child's participation in the study, could interfere with safety assessments, or could interfere with the interpretation of study results.
  • Receipt of the 2026-2027 formulation of a COVID-19 vaccine at any time prior to enrollment.
  • Receipt of any COVID-19 vaccine within 6 months prior to enrollment.
  • Receipt of any nonstudy vaccination within 14 days (28 days for live vaccines) prior to study intervention or plans to receive a nonstudy vaccine through 14 days after administration of study intervention.
  • Received systemic immunosuppressive treatment, including long-acting biological therapies that affect immune responses (for example, infliximab), within 180 days prior to Day 1 (baseline) or plans to do so during the study.
  • Received systemic immunoglobulins or blood products within 90 days prior to the screening visit or plans to receive them during the study. Exception: Nirsevimab and clesrovimab are allowed.
  • For infants who receive breast milk, maternal receipt of systemic immunosuppressive therapy during lactation. This includes ≥10 milligrams/day of prednisone or equivalent for 14 days or more, or other immunomodulating agents (for example, biologics, calcineurin inhibitors, disease-modifying agents) that may be transferred via breastmilk and impact infant immune development or vaccine response.
  • Has participated in an interventional clinical study within 28 days prior to the screening visit based on the medical history interview or plans to do so while participating in this study.
  • Has been placed under the control or protection of an agency, organization, institution, or entity by the courts, the government, or a government body, acting in accordance with powers conferred on them by laws, and regulation. Does not include a child who is adopted or has an appointed legal guardian.
  • Receipt of any nonstudy vaccination within 14 days (28 days for live vaccines) prior to study intervention or plans to receive a nonstudy vaccine through 14 days after administration of study intervention.
  • History of any myocarditis, pericarditis, or myopericarditis

Note: Other inclusion and exclusion criteria may apply.

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: Cohort 1: mRNA-1283 Dose Level 1
Participants aged 2 to <12 years receive one IM dose of on Day 1.
Líquido estéril para inyección
Experimental: Cohort 1: mRNA-1283 Dose Level 2
Participants aged 2 to <12 years receive one IM dose of on Day 1.
Líquido estéril para inyección
Comparador activo: Cohort 1: mRNA-1273
Participants aged 2 to <12 years receive one IM dose of on Day 1.
Líquido estéril para inyección
Experimental: Cohort 2: mRNA-1283 Dose Level 1
Participants aged 6 months to <2 years receive two IM doses 28 days apart (Days 1 and 29).
Líquido estéril para inyección
Experimental: Cohort 2: mRNA-1283 Dose Level 2
Participants aged 6 months to <2 years receive two IM doses of 28 days apart (Days 1 and 29).
Líquido estéril para inyección
Comparador activo: Cohort 2: mRNA-1273
Participants aged 6 months to <2 years receive two IM doses 28 days apart (Day 1 and 29).
Líquido estéril para inyección

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Periodo de tiempo
Cohort 1 and Cohort 2: Number of Participants with Solicited Local and Systemic Adverse Reactions (ARs)
Periodo de tiempo: Day 1 through Day 7; 7 Days following injection
Day 1 through Day 7; 7 Days following injection
Cohort 1 and Cohort 2: Number of Participants with Unsolicited Adverse Events (AEs)
Periodo de tiempo: Day 1 through Day 28 (Cohort 1); 28 Days following injection (Cohort 2)
Day 1 through Day 28 (Cohort 1); 28 Days following injection (Cohort 2)
Cohort 1 and Cohort 2: Number of Participants with Any Medically Attended AEs (MAAEs), Serious AEs (SAEs), AEs of Special Interest (AESIs), and AEs Leading to Discontinuation from the Study
Periodo de tiempo: Day 1 through End of Study (Month 13)
Day 1 through End of Study (Month 13)
Cohort 1 and Cohort 2: Geometric Mean Value of Antibody Level Against Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Target Variant
Periodo de tiempo: Day 29 VISIT (Cohort 1), Day 57 VISIT (Cohort 2)
Day 29 VISIT (Cohort 1), Day 57 VISIT (Cohort 2)
Cohort 1 and Cohort 2: Geometric Mean Fold Rise of Antibody Level Against SARS-CoV-2
Periodo de tiempo: Day 29 (Cohort 1), Day 57 (Cohort 2)
Day 29 (Cohort 1), Day 57 (Cohort 2)
Cohort 1 and Cohort 2: Number of Participants with Seroresponse Rate
Periodo de tiempo: Day 29 (Cohort 1), Day 57 (Cohort 2)
Day 29 (Cohort 1), Day 57 (Cohort 2)

Colaboradores e Investigadores

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

Patrocinador

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 (Estimado)

1 de septiembre de 2026

Finalización primaria (Estimado)

30 de agosto de 2029

Finalización del estudio (Estimado)

30 de agosto de 2029

Fechas de registro del estudio

Enviado por primera vez

2 de septiembre de 2026

Primero enviado que cumplió con los criterios de control de calidad

2 de septiembre de 2026

Publicado por primera vez (Actual)

9 de septiembre de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

9 de septiembre de 2026

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

2 de septiembre de 2026

Última verificación

1 de septiembre de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • mRNA-1283-P202

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. .