The present application provides methods of prevention and/or treatment of breast cancer in a subject by inhibiting expression of PAX2. In the cancer treatment methods disclosed, the method of inhibiting expression of PAX2 can be by administration of a nucleic acid encoding an siRNA for PAX2. A method of treating cancer in a subject by administering DEFB1 is also provided. Similarly, provided is a method of treating cancer in a subject by increasing expression of DEFB1 in the subject.
