Summary
The FLEX Registry will be implemented to operate as a large-scale, population based,
prospective registry. All patients with stage I to III breast cancer who receive MammaPrint®
and BluePrint testing on a primary breast tumor are eligible for entry into the FLEX
Registry, which is intended to enable additional study arms at low incremental effort and
cost. FLEX Registry will utilize an adaptive design, where additional targeted substudies and
arms can be added after the initial study is opened.