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mRNA-1283.222

ModernaTX, Inc. · Phase 3 active Biologic ✓ Verified May 2026

mRNA-1283.222 is a mRNA vaccine Biologic drug developed by ModernaTX, Inc.. It is currently in Phase 3 development for COVID-19.

mRNA-1283.222 is a messenger RNA-based vaccine that encodes for a specific protein to stimulate an immune response.

mRNA-1283.222 is an intervention being studied in a clinical trial to prevent COVID-19 in participants aged 12 and older. The exact mechanism of mRNA-1283.222 is unknown.

Likelihood of approval
63.3% vs 58.3% industry baseline
If approved by FDA: likely 2028–2030
Steps remaining: NDA/BLA submission
Confidence: High
Why this estimate
  • Baseline phase 3 → approval rate +58.3pp
    Industry-wide phase 3 drugs reach approval ~58.3% of the time (BIO/Informa 2023 industry benchmark across all therapeutic areas).
  • Anti-infectives pathway favourability +2.0pp
    Microbiological endpoints + non-inferiority designs raise approval rates above baseline.
  • Big-pharma sponsor +3.0pp
    ModernaTX, Inc. is a top-20 pharma sponsor — historical approval rates run ~3pp above average due to scale, regulatory experience, and trial-design quality.
Predicted approval windows by jurisdiction (conditional on FDA approval)
Regulator Country Likely year Lag vs FDA
FDA US 2028–2030
EMA EU 2029–2031 +0.7 yr
MHRA GB 2029–2031 +0.7 yr
Health Canada CA 2029–2032 +0.9 yr
TGA AU 2029–2032 +1.2 yr
PMDA JP 2029–2032 +1.5 yr
NMPA CN 2030–2033 +2.3 yr
MFDS KR 2029–2032 +1.4 yr
CDSCO IN 2029–2033 +1.8 yr
ANVISA BR 2030–2033 +2.3 yr

Hover any row for the lag rationale. Lag estimates are reduced when the drug has FDA Breakthrough or EMA PRIME designation (sponsors file globally in parallel).

Estimate based on the BIO/Informa industry phase transition rates plus per-drug modifiers for therapeutic area, sponsor type, FDA designations, mechanism, and trial design. Per-jurisdiction lags from Tufts CSDD international approval studies. Not investment, clinical or regulatory advice. Methodology: /methodology#likelihood.

At a glance

Generic namemRNA-1283.222
SponsorModernaTX, Inc.
Drug classmRNA vaccine
ModalityBiologic
Therapeutic areaInfectious Diseases
PhasePhase 3

Mechanism of action

This vaccine works by introducing a piece of genetic material that instructs cells to produce a specific protein, which in turn triggers an immune response. This immune response helps the body recognize and fight against the target disease or condition.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

Frequently asked questions about mRNA-1283.222

What is mRNA-1283.222?

mRNA-1283.222 is a mRNA vaccine drug developed by ModernaTX, Inc., indicated for COVID-19.

How does mRNA-1283.222 work?

mRNA-1283.222 is a messenger RNA-based vaccine that encodes for a specific protein to stimulate an immune response.

What is mRNA-1283.222 used for?

mRNA-1283.222 is indicated for COVID-19.

Who makes mRNA-1283.222?

mRNA-1283.222 is developed by ModernaTX, Inc. (see full ModernaTX, Inc. pipeline at /company/modernatx-inc).

What drug class is mRNA-1283.222 in?

mRNA-1283.222 belongs to the mRNA vaccine class. See all mRNA vaccine drugs at /class/mrna-vaccine.

What development phase is mRNA-1283.222 in?

mRNA-1283.222 is in Phase 3.

What are the side effects of mRNA-1283.222?

Common side effects of mRNA-1283.222 include Pain, redness, or swelling at the injection site.

Related

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing