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Peters R, Stephan C, Jung K, Lein M, Friedersdorff F, Maxeiner A. Comparison of PHI and PHI Density for Prostate Cancer Detection in a Large Retrospective Caucasian Cohort. Urol Int 2021; 106:878-883. [PMID: 34433176 DOI: 10.1159/000517891] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/02/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Beyond prostate-specific antigen (PSA), other biomarkers for prostate cancer (PCa) detection are available and need to be evaluated for clinical routine. OBJECTIVE The aim of the study was to evaluate the Prostate Health Index (PHI) density (PHID) in comparison with PHI in a large Caucasian group >1,000 men. METHODS PHID values were used from available patient data with PSA, free PSA, and [-2]pro-PSA and prostate volume from 3 former surveys from 2002 to 2014. Those 1,446 patients from a single-center cohort included 701 men with PCa and 745 with no PCa. All patients received initial or repeat biopsies. The diagnostic accuracy was evaluated by receiver operating characteristic (ROC) curves comparing area under the ROC curves (AUCs), precision-recall approach, and decision curve analysis (DCA). RESULTS PHID medians differed almost 2-fold between PCa (1.12) and no PCa (0.62) in comparison to PHI (48.6 vs. 33; p always <0.0001). However, PHID and PHI were equal regarding the AUC (0.737 vs. 0.749; p = 0.226), and the curves of the precision-recall analysis also overlapped in the sensitivity range between 70 and 100%. DCA had a maximum net benefit of only ∼5% for PHID versus PHI between 45 and 55% threshold probability. Contrary, in the 689 men with a prostate volume ≤40 cm3, PHI (AUC 0.732) showed a significant larger AUC than PHID (AUC 0.69, p = 0.014). CONCLUSIONS Based on DCA, PHID had only a small advantage in comparison with PHI alone, while ROC analysis and precision-recall analysis showed similar results. In smaller prostates, PHI even outperformed PHID. The increment for PHID in this large Caucasian cohort is too small to justify a routine clinical use.
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Affiliation(s)
- Robert Peters
- Department of Urology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin, Germany
| | - Carsten Stephan
- Department of Urology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin, Germany.,Berlin Institute for Urologic Research, Berlin, Germany
| | - Klaus Jung
- Department of Urology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin, Germany.,Berlin Institute for Urologic Research, Berlin, Germany
| | - Michael Lein
- Department of Urology, Sana Hospital, Offenbach, Germany
| | - Frank Friedersdorff
- Department of Urology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin, Germany.,Department of Urology, Königin-Elisabeth-Krankenhaus Herzberge, Berlin, Germany
| | - Andreas Maxeiner
- Department of Urology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin, Germany
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Tölle A, Jung K, Friedersdorff F, Maxeiner A, Lein M, Fendler A, Stephan C. The discriminative ability of Prostate Health Index to detect prostate cancer is enhanced in combination with miR-222-3p. Cancer Biomark 2021; 30:381-393. [PMID: 33361585 DOI: 10.3233/cbm-201600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND There is an urgent need for better prostate cancer (PCa) biomarkers due to the low specificity of prostate specific antigen (PSA). OBJECTIVE Prostate Health Index (PHI) is an advanced PSA-based test for early detection of PCa. The present study aim was to investigate the potential improvement of diagnostic accuracy of PHI by its combination with suitable discriminative microRNAs (miRNAs). METHODS A two-phase study was performed. In a discovery phase, a panel of 177 miRNAs was measured in ten men with biopsy proven PCa and ten men with histologically no evidence of malignancy (NEM). These results were validated in a second phase including 25 patients in each group. The patients of all groups were matched regarding their PSA values and PHI were measured. RESULTS Based on data in the discovery phase, four elevated miRNAs were selected as potential miRNA candidates for further validation. A combination of miR-222-3p as the best discriminative miRNA with PHI extended the diagnostic accuracy of PHI from an AUC value of 0.690 to 0.787 and resulted in a sensitivity of 72.0% and a specificity of 84.0%. CONCLUSION Circulating microRNAs show useful diagnostic potential in combination with common used biomarkers to enhance their diagnostic power.
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Affiliation(s)
- Angelika Tölle
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Klaus Jung
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute for Urologic Research, Berlin, Germany
| | - Frank Friedersdorff
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Andreas Maxeiner
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Lein
- Berlin Institute for Urologic Research, Berlin, Germany.,Department of Urology, Sana Medical Center Offenbach, Offenbach/Main, Germany
| | - Annika Fendler
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Max Delbrueck Center for Molecular Medicine in the Helmholtz Association, Cancer Research Program, Berlin, Germany.,Cancer Dynamics Laboratory, The Francis Crick Institute, London, UK
| | - Carsten Stephan
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute for Urologic Research, Berlin, Germany
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Macagno A, Athanasiou A, Wittig A, Huber R, Weber S, Keller T, Rhiel M, Golding B, Schiess R. Analytical performance of thrombospondin-1 and cathepsin D immunoassays part of a novel CE-IVD marked test as an aid in the diagnosis of prostate cancer. PLoS One 2020; 15:e0233442. [PMID: 32421745 PMCID: PMC7233579 DOI: 10.1371/journal.pone.0233442] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 05/05/2020] [Indexed: 11/20/2022] Open
Abstract
The Prostate Specific Antigen (PSA) test suffers from low specificity for the diagnosis of Prostate Cancer (PCa). We originally discovered two cancer-related proteins thrombospondin-1 (THBS1) and cathepsin D (CTSD) using a mass-spectrometry-based proteomics approach. The two serum proteins were shown to improve the diagnosis of high-grade PCa. Thus, we developed quantitative ELISAs for the determination of their concentration in human serum. Here we report their analytical performance in terms of limit of detection, specificity, precision, linearity and interferences, which were determined based on CLSI guidelines. Further, we investigated the influence of pre-analytical factors on concentration measurements. For this, blood from 4-6 donors was collected in different tubes and stored at room temperature for different times prior to centrifugation at different centrifugal forces and temperatures. Stability of THBS1 and CTSD under different storage temperatures was also evaluated. Our results show that the assays are specific, linear and sensitive enough to allow measurement of clinical samples. Precision in terms of repeatability and total within-laboratory coefficient of variation (CV) are 5.5% and 8.1% for THBS1 and 4.3% and 7.2% for CTSD, respectively. Relative laboratory-to-laboratory differences were -6.3% for THBS1 and -3% for CTSD. Both THBS1 and CTSD were stable in serum samples, with 80-120% recoveries of concentrations across donors, sample preparation and storage. In conclusion, the ELISAs as part of the novel commercial in vitro diagnostic test Proclarix are suitable for the use in clinical practice. THBS1 and CTSD can be accurately measured for their intended use independent of the lot and laboratory when conditions consistent with routine practice for PSA sampling and storage are used.
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Ferro M, De Cobelli O, Lucarelli G, Porreca A, Busetto GM, Cantiello F, Damiano R, Autorino R, Musi G, Vartolomei MD, Muto M, Terracciano D. Beyond PSA: The Role of Prostate Health Index (phi). Int J Mol Sci 2020; 21:ijms21041184. [PMID: 32053990 PMCID: PMC7072791 DOI: 10.3390/ijms21041184] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/05/2020] [Accepted: 02/07/2020] [Indexed: 01/03/2023] Open
Abstract
Background: Widespread use of prostate specific antigen (PSA) in screening procedures allowed early identification of an increasing number of prostate cancers (PCas), mainly including indolent cancer. Availability of different therapeutic strategies which have a very different impact on the patient’s quality of life suggested a strong need for tools able to identify clinically significant cancer at diagnosis. Multi-parametric magnetic resonance showed very good performance in pre-biopsy diagnosis. However, it is an expensive tool and requires an experienced radiologist. In this context, a simple blood-based test is worth investigating. In this context, researchers focused their attention on the development of a laboratory test able to minimize overdiagnosis without losing the identification of aggressive tumors. Results: Recent literature data on PCa biomarkers revealed a clear tendency towards the use of panels of biomarkers or a combination of biomarkers and clinical variables. Phi, the 4Kscore, and Stockholm3 as circulating biomarkers and the Mi-prostate score, Exo DX Prostate, and Select MD-X as urinary biomarker-based tests have been developed. In this scenario, phi is worthy of attention as a noninvasive test significantly associated with aggressive PCa. Conclusions: Literature data showed that phi had good diagnostic performance to identify clinically significant (cs) PCa, suggesting that it could be a useful tool for personalized treatment decision-making. In this review, phi potentialities, limitations, and comparisons with other blood- and urinary-based tests were explored.
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Affiliation(s)
- Matteo Ferro
- Division of Urology, European Institute of Oncology, 20141 Milan, Italy; (M.F.); (O.D.C.); (G.M.)
| | - Ottavio De Cobelli
- Division of Urology, European Institute of Oncology, 20141 Milan, Italy; (M.F.); (O.D.C.); (G.M.)
| | - Giuseppe Lucarelli
- Department of Emergency and Organ Transplantation—Urology, Andrology and Kidney Transplantation Unit, University of Bari, 70124 Bari, Italy;
| | - Angelo Porreca
- Department of Urology, Abano Terme Hospital, 35031 Padua, Italy;
| | | | - Francesco Cantiello
- Department of Urology, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (F.C.); (R.D.)
| | - Rocco Damiano
- Department of Urology, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (F.C.); (R.D.)
| | | | - Gennaro Musi
- Division of Urology, European Institute of Oncology, 20141 Milan, Italy; (M.F.); (O.D.C.); (G.M.)
| | - Mihai Dorin Vartolomei
- Department of Urology, Comprehensive Cancer Center, Vienna General Hospital, Medical University of Vienna, Währinger Gürtel 18–20, 1090 Vienna, Austria
- Department of Cell and Molecular Biology, University of Medicine, Pharmacy, Sciences and Technology, 540139 Targu Mures, Romania
| | - Matteo Muto
- Radiotherapy Unit, “S. G. Moscati” Hospital, 83100 Avellino, Italy;
| | - Daniela Terracciano
- Department of Translational Medical Sciences, University of Naples “Federico II”, 8031 Naples, Italy
- Correspondence: ; Tel.: +39-8174-6361-7
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