300 Participants NeededMy employer runs this trial

mRNA-1283 for COVID-19

Recruiting at 31 trial locations
MW
Overseen ByModerna WeCare Team
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)
Prior Safety DataThis treatment has passed at least one previous human trial

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial aims to find the best dose of a new COVID-19 vaccine, mRNA-1283, for children aged 6 months to under 12 years. Researchers will test two different doses and compare them to the existing COVID-19 vaccine, mRNA-1273, to determine which is most effective. The trial seeks generally healthy children, including those with stable conditions like asthma. Participants should not have had COVID-19 recently or received a COVID-19 vaccine in the last six months. As a Phase 2 trial, this research measures the treatment's effectiveness in an initial, smaller group, allowing participants to contribute to important vaccine development.

Is there any evidence suggesting that this trial's treatments are likely to be safe?

Research has shown that the mRNA-1283 vaccine for COVID-19 is generally well tolerated. Participants in studies experienced fewer side effects compared to the earlier mRNA-1273 version. Common reactions were mild, including sore arms or brief fatigue.

For mRNA-1273, evidence indicates it is safe for teenagers. Most side effects were also mild, such as pain at the injection site or a brief fever. These findings suggest that both vaccines are safe for children in the age groups under study.12345

Why are researchers excited about this trial's treatments?

Researchers are excited about the mRNA-1283 treatment for COVID-19 because it aims to provide enhanced immune protection with potentially fewer doses than existing vaccines like mRNA-1273 (Moderna's original COVID-19 vaccine). Unlike the standard vaccines that may require booster shots to maintain efficacy, mRNA-1283 is designed to target multiple parts of the virus, which could lead to longer-lasting immunity and better protection against variants. This next-generation vaccine uses a similar mRNA technology but is optimized to be more stable and easier to store, which could simplify distribution and accessibility.

What evidence suggests that this trial's treatments could be effective for COVID-19?

Research has shown that the mRNA-1283 COVID-19 vaccine, which participants in this trial may receive, delivers promising results. It triggers a stronger immune response than the earlier version, mRNA-1273, also under study in this trial. In previous trials, mRNA-1283 provided strong protection against COVID-19, particularly against variants like Omicron. Studies found that mRNA-1273 was highly effective, preventing symptomatic COVID-19 in 94% of cases. These findings suggest that both vaccines effectively boost immunity, with mRNA-1283 possibly offering even better protection.678910

Are You a Good Fit for This Trial?

This trial is for children ages 6 months to under 12 years who are generally healthy and want to participate in research on COVID-19 vaccines. Children with certain health conditions or recent vaccinations may not be able to join.

Inclusion Criteria

Participant is in good general health as determined by medical evaluation including medical history and physical examination; participants with chronic but stable conditions may be eligible if well-controlled and not expected to interfere with study participation or outcomes
For participants in Cohort 2: participant was born at ≥37 weeks, with a minimum birth weight of 2.5 kilograms, without fetal growth restriction
I am not pregnant or breastfeeding and use effective birth control as required by the study.
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Exclusion Criteria

I have taken immune-suppressing medicines in the past 6 months.
Child placed under control or protection of an agency, organization, institution, or entity by courts or government, excluding adopted children or those with appointed legal guardians
Participation in an interventional clinical study within 28 days prior to screening or plans to do so during study
See 9 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive mRNA-1283 or mRNA-1273 doses according to cohort assignment

4 weeks
1-2 visits (in-person)

Follow-up

Participants are monitored for safety and immunogenicity after receiving the doses

4 weeks

What Are the Treatments Tested in This Trial?

Interventions

  • mRNA-1273
  • mRNA-1283

Trial Overview

The study is testing two different doses of a new COVID-19 vaccine (mRNA-1283) compared to an existing one (mRNA-1273) in young children, aiming to find the best dose that works safely and effectively.

How Is the Trial Designed?

6

Treatment groups

Experimental Treatment

Active Control

Group I: Cohort 2: mRNA-1283 Dose Level 2Experimental Treatment1 Intervention
Group II: Cohort 2: mRNA-1283 Dose Level 1Experimental Treatment1 Intervention
Group III: Cohort 1: mRNA-1283 Dose Level 2Experimental Treatment1 Intervention
Group IV: Cohort 1: mRNA-1283 Dose Level 1Experimental Treatment1 Intervention
Group V: Cohort 1: mRNA-1273Active Control1 Intervention
Group VI: Cohort 2: mRNA-1273Active Control1 Intervention

Find a Clinic Near You

Who Is Running the Clinical Trial?

ModernaTX, Inc.

Lead Sponsor

Trials
127
Recruited
66,790,000+

Dr. Stephen Hoge

ModernaTX, Inc.

Chief Medical Officer

MD from Harvard Medical School

Stéphane Bancel profile image

Stéphane Bancel

ModernaTX, Inc.

Chief Executive Officer since 2011

MBA from Harvard Business School, MSc in Engineering from École Centrale Paris

Citations

Moderna Demonstrates Positive Results from Phase 3 Trial ...

mRNA-1283, induced a more robust immune response compared to its previous COVID-19 vaccine, , headache, fatigue, myalgia, and chills.

A Study of mRNA-1283 Injection Compared With mRNA-1273 ...

The purpose of this study (Part 1 and Part 2) is to evaluate the relative vaccine efficacy (rVE), safety, reactogenicity, and immunogenicity ...

Moderna Vaccine Shows Significant COVID-19 Prevention ...

The prevention of symptomatic SARS-CoV-2 infection with mRNA-1273 versus placebo was observed at 94.1% efficacy (95% CI, 89.3-96.8; P <.001).

The Safety and Effectiveness of mRNA Vaccines Against ...

Another study has shown that the mRNA-1273 vaccine had high efficacy in immunocompromised patients with SARS-CoV-2 infections [46]. According to ...

Efficacy, immunogenicity, and safety of a next-generation

Primary objectives comparing. mRNA-1283 with mRNA-1273 were non-inferior rVE to prevent a first event of COVID-19 from 14 days after study.

mRNA-1283 Vaccine for COVID-19

Research shows that the mRNA-1283 vaccine for COVID-19 is generally well tolerated and safer than the earlier mRNA-1273 version. Most participants experienced ...

Safety Data Sheet

No data identified for mRNA-1283 (drug substance). As a ribonucleotide it is not expected to be genotoxic. For another chemically similar ...

NCT04470427 | A Study to Evaluate Efficacy, Safety, and ...

The study is designed to primarily evaluate the efficacy, safety, and immunogenicity of mRNA-1273 to prevent COVID-19 for up to 2 years after the second dose of ...

Safety and durability of mRNA-1273–induced SARS-CoV-2 ...

The overall risk–benefit profile of mRNA-1273 remains favorable in adolescents, with durable 12-month immune responses against SARS-CoV-2 (ancestral/variants).