Article ID Journal Published Year Pages File Type
2135589 Hematology/Oncology and Stem Cell Therapy 2016 7 Pages PDF
Abstract

Objective/BackgroundProgesterone-receptor negativity (PR−) is predictive of adverse outcomes in estrogen receptor-positive (ER+) breast cancer. The Oncotype DX assay provides risk stratification for hormone receptor-positive (HR+) invasive breast cancer; however, the association of PR status and Oncotype DX recurrence scores (RSs) is less clear.MethodsWe designed an analysis to determine whether a significant difference exists in the RS for ER+/PR− tumors when compared with ER+/PR+ breast cancer. Three hundred and fifty patients with HR+ invasive breast cancer who underwent Oncotype DX testing at our institution from December 2006 to October 2013 were i

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