Evaluating the Feasibility of Performing Window of Opportunity Trials in Breast Cancer

BACKGROUND: The waiting period to surgery represents a valuable "window of opportunity" to evaluate novel therapeutic strategies. Interventional studies performed during this period require significant multidisciplinary collaboration to overcome logistical hurdles. We undertook a one-year prospective window of opportunity study to assess feasibility. METHODS: Eligible newly diagnosed postmenopausal, estrogen receptor positive breast cancer …