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A Phase 1, Parallel, Randomized, Multi-center Study to Evaluate the Safety and Immunogenicity of Different LNP Formulations of mRNA Vaccines Using the RSV Monovalent Antigen in Healthy Participants 18 to 49 Years of Age

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Trial Profile

A Phase 1, Parallel, Randomized, Multi-center Study to Evaluate the Safety and Immunogenicity of Different LNP Formulations of mRNA Vaccines Using the RSV Monovalent Antigen in Healthy Participants 18 to 49 Years of Age

Status: Completed
Phase of Trial: Phase I

Latest Information Update: 05 May 2026

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At a glance

  • Drugs SP 0256
  • Indications Metapneumovirus infections; Respiratory syncytial virus infections
  • Focus Adverse reactions; Pharmacodynamics
  • Sponsors Sanofi

Most Recent Events

  • 28 Apr 2026 Status changed from active, no longer recruiting to completed.
  • 16 Sep 2025 Status changed from recruiting to active, no longer recruiting.
  • 17 Aug 2025 Status changed from not yet recruiting to recruiting.

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