Dose-Finding Trial to Evaluate the Safety and Immunogenicity of Cytomegalovirus (CMV) Vaccine mRNA-1647 in Healthy Adults

NCT04232280 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 315

Last updated 2026-05-05

Study results available
· View outcomes & findings →

Summary

This clinical study will assess the safety and immunogenicity of 3 dose levels of mRNA-1647 cytomegalovirus vaccine in CMV-seronegative and CMV-seropositive healthy adults 18-40 years of age.

Conditions

  • Cytomegalovirus Infection

Interventions

BIOLOGICAL

mRNA-1647

Lyophilized product that is reconstituted with saline then diluted with a special diluent to reach the desired concentration

OTHER

Placebo

0.9% sodium chloride (normal saline) injection

Sponsors & Collaborators

  • ModernaTX, Inc.

    lead INDUSTRY

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
SEQUENTIAL

Eligibility

Min Age
18 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2020-01-09
Primary Completion
2023-01-04
Completion
2023-01-04
FDA Drug
Yes

Countries

  • United States

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04232280 on ClinicalTrials.gov