What happenedModerna and Merck said Wednesday their experimental mRNA cancer vaccine successfully reduced recurrence of melanoma, and prevented the deadly skin cancer from spreading to other organs, in a large trial. The results “mark the first successful late-stage trial for a personalized mRNA cancer therapy,” The Wall Street Journal said, “validating decades of research” and “paving the way for a potentially new life-extending treatment” for people diagnosed with melanoma and other cancers.

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