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A Phase 1/2a Open-Label Dose-Ranging and Observer-Blind Placebo-Controlled, Safety and Immunogenicity Study of mRNA-1647 Cytomegalovirus Vaccine in Female and Male Participants 9 to 15 Years of Age and Participants 16 to 25 Years of Age

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Trial Profile

A Phase 1/2a Open-Label Dose-Ranging and Observer-Blind Placebo-Controlled, Safety and Immunogenicity Study of mRNA-1647 Cytomegalovirus Vaccine in Female and Male Participants 9 to 15 Years of Age and Participants 16 to 25 Years of Age

Status: Recruiting
Phase of Trial: Phase I/II

Latest Information Update: 11 Jun 2025

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At a glance

  • Drugs MRNA-1647 (Primary)
  • Indications Cytomegalovirus infections
  • Focus Adverse reactions; Pharmacodynamics
  • Sponsors Moderna Therapeutics

Most Recent Events

  • 05 Jun 2025 Planned number of patients changed from 770 to 860.
  • 09 Jan 2025 Status changed from active, no longer recruiting to recruiting.
  • 08 Apr 2024 Planned End Date changed from 8 Dec 2026 to 15 Jan 2027.

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