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Clinical Trial Summary

The main purpose of this study is to evaluate the efficacy of mRNA 1647 vaccine in CMV-seronegative female participants and to evaluate the safety and reactogenicity of mRNA-1647 vaccine in all participants. The purpose of the Phase 3 extension sub study is to extend the observation period of the main study and to evaluate the longer-term immune persistence of mRNA-1647 vaccine administered to CMV-seronegative females who complete mRNA-1647-P301 main study and to assess for CMV seroconversion in CMV-seronegative participants who did not seroconvert during mRNA-1647-P301 main study. No interventional vaccine will be administered in the extension study.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT05085366
Study type Interventional
Source ModernaTX, Inc.
Contact
Status Active, not recruiting
Phase Phase 3
Start date October 26, 2021
Completion date April 6, 2026

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