Purpose To verify the difference of estrogen receptor β ERβ) expression between breast
cancer and normal mammary tissue and the roles of ERβ in prognosis of breast cancer, its …

Breast cancer is not one disease, but can be categorized into four major molecular subtypes
according to hormone receptor [estrogen receptor (ER) and progesterone receptor (PgR)] …

Background Human breast cancer represents a significantly heterogeneous disease. Global
gene expression profiling measurements have been used to classify tumors into multiple …

Purpose: Isoform-specific tumor estrogen receptor β (ERβ) expression may hold prognostic
information in breast cancer, especially among endocrine-treated breast cancer patients …

Purpose Estrogen receptor-positive (ER+) breast cancer (BC) is a heterogeneous disease,
and there is an ongoing debate regarding the optimal cut point for clinically relevant ER …

Background Estrogen receptor (ER) expression is important for treatment selection and
prognostication of breast cancer patients. Although the metastases are the main targets of …

Immunohistochemical double staining with estrogen receptor (ER) and epidermal growth
factor receptor 2 (HER2) was conducted in tissue sample of 125 women with invasive breast …

Introduction Estrogen receptor (ER) and progesterone receptor (PR) testing are performed in
the evaluation of breast cancer. While the clinical utility of ER as a predictive biomarker to …

Background A majority of breast cancer tumors express estrogen receptor (ER) and/or
progesterone receptor (PR); however, the percentage of cancer cells expressing these …

Purpose The biology of breast cancer with a low expression level (1–10%) of estrogen
receptor (ER) remains a matter of confusion. The recent American Society of …