Chemotherapy Response in Breast Cancer and Glutathione S-Transferases
Author Information
Author(s): W.H.M. Peters, H.M.J. Roelofs, W.L.J. van Putten, J.B.M.J. Jansen, J.G.M. Klijn, J.A. Foekens
Primary Institution: St Radboud University Hospital and Dr Daniel den Hoed Cancer Center
Hypothesis
Is there a correlation between glutathione S-transferase expression and response to adjuvant chemotherapy in breast cancer patients?
Conclusion
Glutathione S-transferases are not useful as markers to predict the response to adjuvant chemotherapy in breast cancer.
Supporting Evidence
- The study involved 139 node-positive breast cancer patients treated with adjuvant chemotherapy.
- No significant associations were found between glutathione S-transferase levels and disease-free survival.
- Glutathione S-transferase class pi was negatively correlated with estrogen and progesterone receptors.
Takeaway
The study looked at breast cancer patients and found that certain proteins called glutathione S-transferases don't help doctors predict how well chemotherapy will work.
Methodology
The study analyzed pre-treatment levels of glutathione S-transferase classes in tumor samples from breast cancer patients and examined their correlation with patient characteristics and disease-free survival.
Limitations
The study did not include a control group, which limits the ability to draw definitive conclusions about the prognostic value of glutathione S-transferases.
Participant Demographics
Mean age of participants was 45.5 years, with 118 pre/perimenopausal and 21 postmenopausal patients.
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