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Moderna, Merck surge on positive trial results for melanoma vaccine

By Michele Maatouk

Date: Wednesday 19 Aug 2026

(Sharecast News) - Merck and Moderna surged on Wednesday after the pharmaceutical companies said a personalised mRNA melanoma vaccine they are jointly developing showed positive results in a first-ever late-stage trial.
The company hailed positive topline results from the Phase 3 trial of intismeran, a novel investigational mRNA-based individualised neoantigen therapy...

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