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West Houston Clinical Research Service | Houston, TX

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A Study of mRNA-1345, an mRNA Vaccine Targeting Respiratory Syncytial Virus, in Children 2 to <18 Years of Age at High Risk of Respiratory Syncytial Virus

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Moderna

Status and phase

Active, not recruiting
Phase 2

Conditions

Respiratory Syncytial Virus

Treatments

Biological: mRNA-1345
Biological: Placebo

Study type

Interventional

Funder types

Industry

Identifiers

NCT06097299
2023-506271-96-00 (Other Identifier)
mRNA-1345-P202

Details and patient eligibility

About

The purpose of the study is to evaluate the safety, reactogenicity, and immunogenicity of mRNA-1345 in children aged 2 to <5 years of age and in children at high risk of respiratory syncytial virus (RSV) disease 5 to <18 years of age to inform the dose level selection for the next phase of development (Phase 3).

Enrollment

340 estimated patients

Sex

All

Ages

2 to 17 years old

Volunteers

Accepts Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

Cohort 1:

  • 2 to <5 years of age, at the time the informed consent is signed.
  • Healthy, or with stable chronic conditions increasing the risk of RSV disease, per the clinical judgment of the Investigator.

Cohort 2:

  • 5 to <18 years of age, at the time the informed consent is signed.
  • Participants with stable chronic conditions increasing the risk of RSV disease.
  • Female participants of child-bearing potential may be enrolled in the study, if the participant: 1) has a negative urine pregnancy test at Screening and on the day of injection (Day 1); 2) has practiced adequate contraception or has abstained from all activities that could lead to pregnancy for 28 days prior to Day 1; 3) has agreed to continue adequate contraception through 90 days following injection; and 4) is not currently breastfeeding.

Key Exclusion Criteria:

  • Acutely ill or febrile (temperature ≥38.0°Celsius [100.4°Fahrenheit]) within 72 hours prior to or at the Screening Visit or Day 1.
  • History of a diagnosis or condition that, in the judgment of the Investigator, may affect study assessment or compromise participant safety.
  • Has received or plans to receive any licensed or authorized vaccine ≤14 days prior to the study vaccine injection (Day 1) or plans to receive a licensed or authorized vaccine within 14 days after the study vaccine injection.
  • Receipt of any prior systemic immunosuppressants or immune-modifying drugs. Short courses (<7 days) of oral corticosteroids are allowed if completed at least 3 months prior to enrollment.
  • Receipt of RSV monoclonal antibodies within 6 months prior to enrollment in the study.
  • Participated in an interventional clinical study within 28 days (6 months for a study assessing a product unlicensed in this age group) prior to the day of enrollment or plans to do so while enrolled in this study.

Note: Other protocol-defined inclusion and exclusion criteria may apply.

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Quadruple Blind

340 participants in 2 patient groups

Cohort 1 (2 to <5 Years of Age)
Experimental group
Description:
Participants 2 to <5 years of age will receive either a single intramuscular (IM) injection of mRNA-1345 or placebo on Day 1.
Treatment:
Biological: Placebo
Biological: mRNA-1345
Cohort 2 (5 to <18 Years of Age)
Experimental group
Description:
Participants 5 to <18 years of age will receive either a single IM injection of mRNA-1345 or placebo on Day 1.
Treatment:
Biological: Placebo
Biological: mRNA-1345

Trial contacts and locations

50

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Central trial contact

Moderna Clinical Trials Support Center

Data sourced from clinicaltrials.gov

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