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Tumor markers in human prostatic carcinoma. An optimation of reference values
A Lewenhaupt1, P Ekman, P Eneroth
1Department of Surgery, Mora Hospital, Sweden.
European Urology
|January 1, 1990
Summary
Elevating discrimination values for prostate cancer markers improves prognosis prediction accuracy. Higher cutoffs enhance specificity with minimal impact on sensitivity for identifying poor prognosis patients.
Area of Science:
- Urology
- Oncology
- Biochemistry
Background:
- Prostatic carcinoma diagnosis and prognosis assessment rely on various serum markers.
- Standard reference values for these markers may not optimally differentiate patient outcomes.
Purpose of the Study:
- To evaluate the prognostic value of specific serum markers in prostatic carcinoma.
- To determine optimal discrimination values for predicting patient survival.
Main Methods:
- Serum concentrations of prostatic acid phosphatase, prostate-specific antigen, neopterin, osteocalcin, tissue polypeptide antigen, and CA-50 were measured in 86 patients.
- Data were correlated with 3-year patient survival rates.
Main Results:
- Standard reference values showed acceptable sensitivity but low specificity for prognosis.
- Employing higher discrimination values improved specificity with a slight decrease in sensitivity.
- Optimized discrimination values better correlated with patient survival.
Conclusions:
- Higher discrimination values than standard recommendations are suggested for short-term prognosis in prostate cancer.
- Careful selection of discrimination values is crucial for differentiating patient groups effectively.