NewsHealth & MedicineAn mRNA cancer vaccine may offer long-term protectionA small clinical trial suggests the treatment could help keep pancreatic cancer from returning With the help of an mRNA vaccine, the immune system can learn to spot pancreatic cancer cells (shown in a false-color scanning electron micrograph) in the body.Science Photo Library - STEVE GSCHMEISSNER/Getty Images PlusBy Meghan Rosen1 hour agoA new mRNA vaccine could prevent pancreatic cancer from returning potentially for the long haul.In a small clinical trial, some patients who received the vaccine remained cancer-free for more than three years, researchers reported February 19 in Nature.That is pretty remarkable, says Aaron Sasson, who directs the Pancreatic Cancer Center at Stony Brook Medicine in New York and was not involved with the work. Despite facing a notoriously lethal cancer, these patients lived a lot longer than we would have otherwise expected, he says.