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Virus Therapy

mRNA-1283.529 for COVID-19

Phase 2
Waitlist Available
Research Sponsored by ModernaTX, Inc.
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up up to 5 years
Awards & highlights
No Placebo-Only Group

Summary

This trial tests different COVID-19 booster vaccines on people who have already received previous doses. The goal is to see if these boosters can improve immunity against the virus and its variants. Booster doses of COVID-19 vaccines are a strategy to improve effectiveness as immunity decreases and new variants emerge.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~up to 5 years
This trial's timeline: 3 weeks for screening, Varies for treatment, and up to 5 years for reporting.

Treatment Details

Awards & Highlights

No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.

Trial Design

8Treatment groups
Experimental Treatment
Active Control
Group I: Part B: mRNA-1283.529 Dose Level 2Experimental Treatment1 Intervention
Participants will receive single IM injection of mRNA-1283.529 as a second booster at Dose Level 2 on Day 1.
Group II: Part B: mRNA-1283.529 Dose Level 1Experimental Treatment1 Intervention
Participants will receive single IM injection of mRNA-1283.529 as a second booster at Dose Level 1 on Day 1.
Group III: Part A: mRNA-1283.211 Dose Level 2Experimental Treatment1 Intervention
Participants will receive single IM injection of mRNA-1283.211 at Dose Level 2 on Day 1.
Group IV: Part A: mRNA-1283.211 Dose Level 1Experimental Treatment1 Intervention
Participants will receive single IM injection of mRNA-1283.211 at Dose Level 1 on Day 1.
Group V: Part A: mRNA-1283 Dose Level 3Experimental Treatment1 Intervention
Participants will receive single IM injection of mRNA-1283 at Dose Level 3 on Day 1.
Group VI: Part A: mRNA-1283 Dose Level 2Experimental Treatment1 Intervention
Participants will receive single IM injection of mRNA-1283 at Dose Level 2 on Day 1.
Group VII: Part A: mRNA-1283 Dose Level 1Experimental Treatment1 Intervention
Participants will receive single intramuscular (IM) injection of mRNA-1283 at Dose Level 1 on Day 1.
Group VIII: Part A: mRNA-1273Active Control1 Intervention
Participants will receive single IM injection of mRNA-1273 on Day 1.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
mRNA-1283
2021
Completed Phase 2
~650
mRNA-1283.529
2021
Completed Phase 2
~540
mRNA-1283.211
2021
Completed Phase 2
~540

Find a Location

Who is running the clinical trial?

ModernaTX, Inc.Lead Sponsor
118 Previous Clinical Trials
61,584,699 Total Patients Enrolled
40 Trials studying COVID-19
61,381,315 Patients Enrolled for COVID-19
~138 spots leftby Nov 2025
Unbiased ResultsWe believe in providing patients with all the options.
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Verified Trials OnlyAll of our trials are run by licensed doctors, researchers, and healthcare companies.
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