A multicenter clinical trial on the use of (-5, -7) pro prostate specific antigen.
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A multicenter clinical trial on the use of (-5, -7) pro prostate specific antigen. / Lein, Michael; Semjonow, Axel; Graefen, Markus; Kwiatkowski, Maciej; Abramjuk, Claudia; Stephan, Carsten; Haese, Alexander; Chun, Felix; Schnorr, Dietmar; Loening, Stefan A; Jung, Klaus.
In: J UROLOGY, Vol. 174, No. 6, 6, 2005, p. 2150-2153.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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T1 - A multicenter clinical trial on the use of (-5, -7) pro prostate specific antigen.
AU - Lein, Michael
AU - Semjonow, Axel
AU - Graefen, Markus
AU - Kwiatkowski, Maciej
AU - Abramjuk, Claudia
AU - Stephan, Carsten
AU - Haese, Alexander
AU - Chun, Felix
AU - Schnorr, Dietmar
AU - Loening, Stefan A
AU - Jung, Klaus
PY - 2005
Y1 - 2005
N2 - PURPOSE: The determination of pro prostate specific antigen (proPSA) forms has been suggested to be promising in prostate cancer diagnosis. In this multicenter trial we evaluated the diagnostic usefulness of (-5, -7) proPSA. MATERIALS AND METHODS: A total of 2,055 white men, including 1,046 with and 1,009 without prostate cancer, with total PSA (tPSA) between 0.28 and 81 ng/ml were retrospectively analyzed. Of these men 2,026 and 1,727 had tPSA less than 20 and less than 10 ng/ml, respectively. All subjects were untreated for prostatic disease and underwent multisector needle biopsy of the prostate. An Elecsys 2010 analyzer was used to determine tPSA, free PSA (fPSA) and (-5, -7) proPSA in the 2,055 serum samples. ROC analyses were performed to discriminate men with biopsy positive and negative results in the entire and in select tPSA ranges. RESULTS: In the select tPSA range 2 to 4 ng/ml the area under the ROC curve for proPSA (0.53) and proPSA/fPSA (0.59) was not significantly larger than that for tPSA (0.60) or the fPSA/tPSA (f/tPSA) ratio (0.64). In the tPSA range 4 to 10 ng/ml the area under the curve for the ratio proPSA/fPSA (0.67) was larger than for tPSA (0.53) but not larger than for f/tPSA (0.69). The f/tPSA ratio demonstrated the best discriminatory power in this tPSA range of 4 to 10 ng/ml. CONCLUSIONS: In this multicenter study no improvement in diagnostic accuracy was shown when comparing (-5, -7) proPSA and the corresponding ratios with tPSA or f/tPSA. Further studies using other proPSA forms or tumor associated proteins should be done.
AB - PURPOSE: The determination of pro prostate specific antigen (proPSA) forms has been suggested to be promising in prostate cancer diagnosis. In this multicenter trial we evaluated the diagnostic usefulness of (-5, -7) proPSA. MATERIALS AND METHODS: A total of 2,055 white men, including 1,046 with and 1,009 without prostate cancer, with total PSA (tPSA) between 0.28 and 81 ng/ml were retrospectively analyzed. Of these men 2,026 and 1,727 had tPSA less than 20 and less than 10 ng/ml, respectively. All subjects were untreated for prostatic disease and underwent multisector needle biopsy of the prostate. An Elecsys 2010 analyzer was used to determine tPSA, free PSA (fPSA) and (-5, -7) proPSA in the 2,055 serum samples. ROC analyses were performed to discriminate men with biopsy positive and negative results in the entire and in select tPSA ranges. RESULTS: In the select tPSA range 2 to 4 ng/ml the area under the ROC curve for proPSA (0.53) and proPSA/fPSA (0.59) was not significantly larger than that for tPSA (0.60) or the fPSA/tPSA (f/tPSA) ratio (0.64). In the tPSA range 4 to 10 ng/ml the area under the curve for the ratio proPSA/fPSA (0.67) was larger than for tPSA (0.53) but not larger than for f/tPSA (0.69). The f/tPSA ratio demonstrated the best discriminatory power in this tPSA range of 4 to 10 ng/ml. CONCLUSIONS: In this multicenter study no improvement in diagnostic accuracy was shown when comparing (-5, -7) proPSA and the corresponding ratios with tPSA or f/tPSA. Further studies using other proPSA forms or tumor associated proteins should be done.
M3 - SCORING: Zeitschriftenaufsatz
VL - 174
SP - 2150
EP - 2153
JO - J UROLOGY
JF - J UROLOGY
SN - 0022-5347
IS - 6
M1 - 6
ER -