Mice bearing bilateral orthotopic Polyomavirus middle T-antigen (PyMT) mammary tumors expressing the surrogate tumor antigen ovalbumin (PyMT-OVA) were vaccinated i.t. with Stat3fl/fl or Stat3∆/∆ CD103+ cDC1s, following DC exposure to maturation stimuli and OVA. This evidence concerns the gene ITGAE and breast cancer.