Scientists from Merck and Moderna have made a new vaccine that is made just for each patient. The medicine tries to stop melanoma, a dangerous skin cancer, from coming back. The study was a small trial that tested the idea on people who had already had surgery.
In the trial, each person got a personalized dose that matched the tiny pieces of their tumor. The body’s immune system learned to see those pieces, called antigen, as a sign of danger. After the treatment, the number of patients whose cancer showed recurrence dropped by 42 percent. The new therapy works differently from older drugs that block a “checkpoint” and let the immune system act. Most people felt only mild side effects, like sore arms or low fever. Doctors say the result is promising because it shows the body can be taught to fight back.
The result gives hope that a personalized approach could protect more people from melanoma. Researchers plan to test the vaccine with more patients and see if it works for other cancers too. If the next studies succeed, this kind of vaccine could become a regular part of cancer care.
