A personalized mRNA cancer vaccine has shown success in a late-stage trial for melanoma. The vaccine, combined with the immunotherapy Keytruda, met its primary and secondary goals of reducing cancer recurrence and preventing cancer spread. Developed by Moderna and Merck, the treatment's interim results are promising.

The study is ongoing, with further details available from the source. Moderna's chief executive has expressed significant enthusiasm for the results, comparing their importance to a major milestone in the company's Covid-19 vaccine development.

Further information on the trial and its findings can be found through the source, including comments from Moderna's chief executive and details on the treatment's development.