About the Prosigna ® Breast Cancer Prognostic Gene Signature Assay and nCounter ® Dx Analysis System The Prosigna Assay provides a risk category and
numerical score for assessment of the risk of distant recurrence of disease at 10 years in postmenopausal women with node - negative (Stage I or II) or node -
positive (Stage II), hormone receptor -
positive (HR +) breast cancer.