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Cathepsin D in breast cancer tissue
P Gonzalez Gancedo1, M L G-Casaus, J Ruiz Cacho
1Laboratory Department, La Paz Hospital, Madrid, Spain.
The International Journal of Biological Markers
|October 1, 1990
Summary
Cathepsin D concentration may indicate breast cancer prognosis. High levels were observed in benign breast conditions and were linked to advanced breast cancer indicators, suggesting its prognostic value.
Area of Science:
- Oncology
- Biochemistry
Background:
- Cathepsin D is a proteinase implicated in tumor progression.
- Its role in breast cancer requires further elucidation.
Purpose of the Study:
- To investigate the prognostic significance of cathepsin D in breast cancer.
- To establish a cut-off value for cathepsin D in benign breast conditions.
Main Methods:
- Assessed cathepsin D concentration in women with benign breast pathology and breast cancer.
- Correlated cathepsin D levels with tumor characteristics and prognostic factors.
Main Results:
- A cathepsin D cut-off of 43 pmol/mg protein was identified for benign breast pathology.
- Elevated cathepsin D was found in chronic mastitis and in breast cancer patients.
- High cathepsin D levels in breast cancer were independent of hormone receptor status.
- Increased cathepsin D correlated with adverse prognostic factors like advanced clinical stage, tumor size, lymph node involvement, and poor histological differentiation.
Conclusions:
- Cathepsin D concentration shows potential as a prognostic marker in breast cancer.
- Elevated cathepsin D may indicate a more aggressive tumor profile when combined with other established prognostic factors.