SUNDAY, April 13 (HealthDay News) — A breast cancer vaccine significantly reduced the risk of recurrence for patients who have a high expression of the protein HER2-neu. This type of breast cancer, representing about one-quarter of all cases, tends to be deadlier than other forms of the disease. In this group, the vaccine reduced mortality by 50 percent. Even better, however, the vaccine lowered mortality by 100 percent in women with breast cancer and low or intermediate expression of HER2/neu. Currently, these women have no therapies other than conventional cancer treatments such as surgery and chemo. "We now have something...