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Moderna Announces First Participant Dosed in Phase 1 Clinical Trial Evaluating Investigational Tumor-Targeted Cancer Antigen Therapy in Solid Tumors

$MRNAPress releaseJul 16, 2026, 7:00 AM ETRead the release

Moderna dosed the first participant in a Phase 1 study evaluating mRNA-4200, a tumor-targeted cancer antigen therapy, for patients with advanced or metastatic solid tumors. The candidate encodes for seven antigens and is administered alongside checkpoint inhibitor therapy to evaluate safety, tolerability, and dose escalation.

Key figures

Drug Name
mRNA-4200
Phase Of Trial
Phase 1
Antigen count
7
Clinical trial id
NCT06880549

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