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Thymidine kinase in breast cancer
J F Robertson1, K L O'Neill, M W Thomas
1City Hospital, Nottingham, UK.
British Journal of Cancer
|October 1, 1990
Summary
Serum thymidine kinase (TK) levels are elevated in breast cancer patients, correlating with disease stage. Serial TK measurements can monitor treatment response in systemic breast cancer, indicating recurrence or progression.
Area of Science:
- Biochemistry
- Oncology
- Medical Diagnostics
Background:
- Thymidine kinase (TK) is an enzyme crucial for DNA synthesis.
- Elevated TK levels are often observed in rapidly proliferating cells, including cancer cells.
Purpose of the Study:
- To investigate serum thymidine kinase levels in breast cancer patients across different disease stages.
- To evaluate the utility of serial TK measurements in monitoring treatment response and detecting recurrence in breast cancer.
Main Methods:
- Serum TK levels were measured in normal controls, primary operable breast cancer, systemic breast cancer, and patients with inflammatory gastrointestinal disorders.
- Serial TK measurements were performed in disease-free operable breast cancer patients and advanced breast cancer patients undergoing hormone therapy.
Main Results:
- Serum TK levels were significantly higher in both operable and systemic breast cancer patients compared to normal controls.
- Systemic breast cancer patients exhibited significantly elevated TK levels compared to operable breast cancer patients.
- Serial TK monitoring showed a rise in TK levels preceding systemic recurrence and reflected treatment response in advanced breast cancer.
Conclusions:
- Serum thymidine kinase is a valuable biomarker for assessing breast cancer stage.
- Serial serum TK measurements can effectively monitor treatment efficacy and detect disease progression or recurrence in breast cancer patients.