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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 september 2026 bijgewerkt door: 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.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

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.

Studietype

Ingrijpend

Inschrijving (Geschat)

300

Fase

  • Fase 2

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

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

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Kind

Accepteert gezonde vrijwilligers

Ja

Beschrijving

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.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Preventie
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Verviervoudigen

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Cohort 1: mRNA-1283 Dose Level 1
Participants aged 2 to <12 years receive one IM dose of on Day 1.
Steriele vloeistof voor injectie
Experimenteel: Cohort 1: mRNA-1283 Dose Level 2
Participants aged 2 to <12 years receive one IM dose of on Day 1.
Steriele vloeistof voor injectie
Actieve vergelijker: Cohort 1: mRNA-1273
Participants aged 2 to <12 years receive one IM dose of on Day 1.
Steriele vloeistof voor injectie
Experimenteel: 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).
Steriele vloeistof voor injectie
Experimenteel: 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).
Steriele vloeistof voor injectie
Actieve vergelijker: Cohort 2: mRNA-1273
Participants aged 6 months to <2 years receive two IM doses 28 days apart (Day 1 and 29).
Steriele vloeistof voor injectie

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Tijdsspanne
Cohort 1 and Cohort 2: Number of Participants with Solicited Local and Systemic Adverse Reactions (ARs)
Tijdsspanne: 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)
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: Day 29 (Cohort 1), Day 57 (Cohort 2)
Day 29 (Cohort 1), Day 57 (Cohort 2)

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 september 2026

Primaire voltooiing (Geschat)

30 augustus 2029

Studie voltooiing (Geschat)

30 augustus 2029

Studieregistratiedata

Eerst ingediend

2 september 2026

Eerst ingediend dat voldeed aan de QC-criteria

2 september 2026

Eerst geplaatst (Werkelijk)

9 september 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

9 september 2026

Laatste update ingediend die voldeed aan QC-criteria

2 september 2026

Laatst geverifieerd

1 september 2026

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • mRNA-1283-P202

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Ja

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .