At the National Comprehensive Cancer Network (NCCN) 23rd Annual Conference, held March 22-24 in Orlando, Florida, Sharon H. Giordano, MD, MPH, the University of Texas MD Anderson Cancer Center; Anthony D. Elias, MD, University of Colorado Cancer Center; and William J. Gradishar, MD, Robert H. Lurie Comprehensive Cancer Center of Northwestern University, provided an update on the NCCN guidelines for the treatment of breast cancer and discussed new directions in breast cancer therapy.