Reuters reports “a major success in a new field of cancer treatment this week, as Moderna and Merck announced a personalized mRNA cancer vaccine “reduced the risk of recurrence and spread of melanoma in a late-stage trial”. The vaccine was tested with Merck’s widely used immunotherapy drug Keytruda: Thousands of patients who have undergone surgery to remove high-risk melanoma tumors could benefit as soon as next year if regulators approve the vaccine, Moderna President Stephen Hoge said in an interview. This is the first positive late-stage trial result for an mRNA cancer vaccine, which trains