Current status of hormone receptors in human breast cancer

Virginia Medical
|February 1, 1979
PubMed

Insights

Measuring estrogen receptor status in breast cancer patients is crucial for improving endocrine therapy response rates. This approach helps tailor treatments for metastatic breast cancer, enhancing patient outcomes.

Area of Science:

  • Endocrinology
  • Oncology
  • Molecular Biology

Background:

  • Metastatic breast cancer (MBC) treatment often involves endocrine manipulation.
  • Improving patient response rates to endocrine therapy remains a significant clinical challenge.
  • Understanding steroid hormone mechanisms is key to optimizing MBC treatment.

Purpose of the Study:

  • To explore the mechanisms of steroid hormone action in MBC.
  • To evaluate the utility of receptor assays in predicting endocrine therapy response.
  • To advocate for routine estrogen receptor (ER) status measurement in all breast cancers.

Main Methods:

  • Review of current research on steroid hormone action.
  • Discussion of the clinical value of receptor assays.
  • Recommendation for specific biomarker testing.

Main Results:

  • Estrogen receptor (ER) status is a critical determinant of endocrine therapy efficacy.
  • Receptor assays provide valuable prognostic and predictive information.
  • Measurement of ER status can guide treatment decisions for MBC.

Conclusions:

  • Routine measurement of estrogen receptor status is recommended for all breast cancer patients.
  • ER status assessment is vital for selecting appropriate endocrine-based treatments.
  • This practice can enhance treatment response and outcomes in metastatic breast cancer.

Related Concept Videos

Intracellular Hormone Receptors01:08

Intracellular Hormone Receptors

Lipid-soluble hormones diffuse across the plasma and nuclear membrane of target cells to bind to their specific intracellular receptors. These receptors act as transcription factors that regulate gene expression and protein synthesis in the target cell
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Receptor Downregulation in MVBs01:15

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR activation may...