Abstract
Background:
The aim of the study was to evaluate the correlation between preoperative [-2]proPSA, the Gleason Score (GS) and the risk of non-organ-confined (NOC) disease in patients undergoing radical prostatectomy (RP).
Methods:
Beckman Coulter Access immunoassay was used to study serum specimens of 381 patients enrolled in a prostate cancer (PCa) early detection program. Inclusion criteria were three or more available serum specimens over 4 years before diagnosis. The values obtained were correlated with the GSs and pathological stages of specimens obtained at RP.
Results:
[-2]proPSA levels were significantly higher in the cancer group (n=208) than in the benign group (n=173). Already 4 years before diagnosis [-2]proPSA differed significantly between PCa and benign prostate in all measured time points, however, highest prediction value was 2 and 1 years before diagnosis (P<0.001). When stratified [-2]proPSA levels according to GS of RP specimens, [-2]proPSA was highest in patients with ⩾GS8 and lowest in those with ⩽GS6.
The difference in [-2]proPSA values between GS⩾8 and GS⩽7 was highly significant (P<0.01) already 3 years before diagnosis. Investigating the correlation between extraprostatic extension and the preoperative [-2]proPSA levels we found preoperative [-2]proPSA values significantly higher in men with NOC PCa compared with organ-confined (OC) cancers.
The highest predictive value of [-2]proPSA to differ between OC and extraprostatic extension was found 3 and 2 years before RP.
Conclusions:
Patients with high [-2]proPSA levels in the years before cancer diagnosis are at a higher risk of having aggressive PCas. Thus, the [-2]proPSA should be included in the treatment decision-making for managing screen-detected PCa.
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Heidegger, I., Klocker, H., Steiner, E. et al. [-2]proPSA is an early marker for prostate cancer aggressiveness. Prostate Cancer Prostatic Dis 17, 70–74 (2014). https://doi.org/10.1038/pcan.2013.50
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DOI: https://doi.org/10.1038/pcan.2013.50
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