Moderna receives refusal to file letter from the US FDA for its investigational seasonal influenza vaccine, mRNA-1010

Moderna

10 February 2026 - Refusal to review the submission is inconsistent with feedback at pre-Phase 3 and pre-submission consultations; Moderna has requested a type A meeting to understand the path forward.

Moderna today announced the US FDA Center for Biologics Evaluation and Research has notified the Company that it will not initiate a review of the biologics license application for its investigational influenza vaccine, mRNA-1010, and has issued a refusal to file letter. 

Moderna had exercised a priority review voucher to facilitate a timely review of the application.

Read Moderna press release

Michael Wonder

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Michael Wonder

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Outcome , US , Vaccine , Dossier , Registration