STAT | Reporting from the frontiers of health and medicine Follow STAT+: Moderna and Merck say mRNA cancer vaccine succeeded in late-stage melanoma trial A personalized mRNA cancer vaccine succeeded in a late-stage melanoma study, results that could herald a new, powerful approach in oncology. https://www.statnews.com/2026/08/19/mrna-cancer-vaccine-trial-melanoma-merck-moderna/ statnews.com