Skip to content
Study details
Enrolling now

A Study to Evaluate the Immunogenicity and Safety of mRNA-1283 COVID-19 Variant-containing Formulations

ModernaTX, Inc.
NCT IDNCT07089706ClinicalTrials.gov data as of Apr 2026
Phase

Phase 4

Target enrollment

832

Study length

about 10 months

Ages

12+

Locations

5 sites in GA, LA, MS +1

About this study

This trial is testing a new type of COVID-19 vaccine called mNEXSPIKE® that contains a variant of the virus. The goal is to see how well it creates an immune response (immunogenicity) and whether it's safe for people, including adults and children.

Based on ClinicalTrials.gov records.

What participants do

  • 1.Receive mRNA-1283.251 Variant-containing Formulation
PhasePhase 4

Participation effort

Estimated from trial records. Details can vary by site.

Time + visits
Low13%
Logistics
Moderate50%

Logistics difficulty varies by site location and availability.

Trial highlights

Treatment details

Auto-extracted from trial records to preview treatments and outcomes.

Endpoints

Secondary: Subprotocol 1: Part A - Number of Participants with Unsolicited Adverse Events (AEs), Serious Adverse Events (SAEs), AEs of Special Interests (AESIs), and AEs Leading to Study Withdrawal, Subprotocol 1: Part B - Number of Participants with SAEs, AESIs, and AEs Leading to Study Withdrawal, Subprotocol 1: Part B - Number of Participants with Unsolicited AEs

Body systems

Infectious