Estrogen Receptor (ER) belongs to a superfamily of nuclear hormone receptors and is expressed in about 85% of invasive breast cancers. There are two known isoforms of estrogen receptor, ER? And ERß. It is a weak prognostic factor but a strong predictive factor for response to endocrine therapies, both in adjuvant and metastatic settings. The primary indication to assess ER in breast cancer is to predict response to hormonal therapies such as tamoxifen, other selective estrogen receptor modulators (SERMs) and aromatase inhibitors. In univariate analysis, moderate to strong staining in even 1% of the invasive tumor cells is associated with significant improvement in disease-free survival compared to those patients whose tumor lacks ER expression.
KIT COMPONENTS (100 reactions)
- 50x DAB Chromogen 1 x 0.5ml
- Biotinylated goat anti-rabbit IgG(H+L) 1 x 15ml
- DAB substrate 1 x 15ml
- Hydrogen Peroxide Block 1 x 15ml
- Protein block 1 x 15ml
- Streptavidin Peroxidase 1 x 15ml
- Rabbit anti-human ER
Store at +4°C. Please refer to protocols.
The products is “”FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC PROCEDURES”””