Skin cancer is almost defeated. Moderna and Merck created a personalized mRNA vaccine that reduced the risk of melanoma recurrence or death by 42%. 1,137 patients participated in the experiment after the removal of the tumor. Two years later, the disease did not return in 82.2% of those who received the new treatment. The drug is created individually for the genetics of the tumor so that the immune system recognizes and destroys cancer cells.