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Cho EJ, Hong J, Hyun J, Lee W, Kim HS, Chun S, Min WK. Usefulness and performance evaluation of serum KL-6 and SP-A assays in healthy individuals and patients with interstitial lung disease. Clin Biochem 2023:110609. [PMID: 37414329 DOI: 10.1016/j.clinbiochem.2023.110609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 07/02/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND Interstitial lung abnormalities (ILAs) are associated with the risk of progression to interstitial lung diseases (ILDs). Krebs von den Lungen 6 (KL-6) and surfactant protein (SP)-A have been used as biomarkers of ILDs. In this study, we evaluated the levels of these biomarkers and identified their clinical correlations in healthy individuals to assess their usefulness in the diagnosis of ILAs. METHODS The patient samples were categorized into three groups: healthy, disease, and ILD groups. We used the automated immunoassay HISCL KL-6 and SP-A assay kits. The analytical performance evaluation involved precision, linearity, comparison, establishment of reference intervals, and determination of the cutoff points. We also analyzed the correlations between presence of abnormalities on chest radiography and computed tomography (CT) or pulmonary function test (PFT) and serum levels in the healthy group. RESULTS KL-6 and SP-A assays showed good analytical performance. The KL-6 and SP-A cutoff values were 304 U/mL and 43.5 ng/mL between the ILD and healthy groups, respectively, which were lower than the values recommended by the manufacturer. In the clinical correlations with radiological findings, SP-A values in subjects with lung abnormalities on CT scans were significantly higher than those in normal scans. There was no significant difference in KL-6 and SP-A levels among PFT patterns; however, both serum levels in the mixed pattern showed higher values than those in the other patterns. CONCLUSIONS The results revealed a positive association between increased serum levels of SP-A and KL-6 and clinical characteristics as incidental findings on chest imaging and reduced lung function.
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Affiliation(s)
- Eun-Jung Cho
- Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Jinyoung Hong
- Department of Laboratory Medicine, Hallym University College of Medicine, Chuncheon, Korea
| | - Jungwon Hyun
- Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Woochang Lee
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyun Soo Kim
- Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Sail Chun
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Won-Ki Min
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Jasu J, Tolonen T, Antonarakis ES, Beltran H, Halabi S, Eisenberger MA, Carducci MA, Loriot Y, Van der Eecken K, Lolkema M, Ryan CJ, Taavitsainen S, Gillessen S, Högnäs G, Talvitie T, Taylor RJ, Koskenalho A, Ost P, Murtola TJ, Rinta-Kiikka I, Tammela T, Auvinen A, Kujala P, Smith TJ, Kellokumpu-Lehtinen PL, Isaacs WB, Nykter M, Kesseli J, Bova GS. Combined Longitudinal Clinical and Autopsy Phenomic Assessment in Lethal Metastatic Prostate Cancer: Recommendations for Advancing Precision Medicine. EUR UROL SUPPL 2021; 30:47-62. [PMID: 34337548 PMCID: PMC8317817 DOI: 10.1016/j.euros.2021.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Systematic identification of data essential for outcome prediction in metastatic prostate cancer (mPC) would accelerate development of precision oncology. OBJECTIVE To identify novel phenotypes and features associated with mPC outcome, and to identify biomarker and data requirements to be tested in future precision oncology trials. DESIGN SETTING AND PARTICIPANTS We analyzed deep longitudinal clinical, neuroendocrine expression, and autopsy data of 33 men who died from mPC between 1995 and 2004 (PELICAN33), and related findings to mPC biomarkers reported in the literature. INTERVENTION Thirty-three men prospectively consented to participate in an integrated clinical-molecular rapid autopsy study of mPC. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Data exploration with correction for multiple testing and survival analysis from the time of diagnosis to time to death and time to first occurrence of severe pain as outcomes were carried out. The effect of seven complications on the modeled probability of dying within 2 yr after presenting with the complication was evaluated using logistic regression. RESULTS AND LIMITATIONS Feature exploration revealed novel phenotypes related to mPC outcome. Four complications (pleural effusion, severe anemia, severe or controlled pain, and bone fracture) predict the likelihood of death within 2 yr. Men with Gleason grade group 5 cancers developed severe pain sooner than those with lower-grade tumors. Surprisingly, neuroendocrine (NE) differentiation was frequently observed in the setting of high serum prostate-specific antigen (PSA) levels (≥30 ng/ml). In 4/33 patients, no controlled (requiring analgesics) or severe pain was detected, and strikingly, 14/15 metastatic sites studied in these men did not express NE markers, suggesting an inverse relationship between NE differentiation and pain in mPC. Intracranial subdural metastasis is common (36%) and is usually clinically undetected. Categorization of "skeletal-related events" complications used in recent studies likely obscures the understanding of spinal cord compression and fracture. Early death from prostate cancer was identified in a subgroup of men with a low longitudinal PSA bandwidth. Cachexia is common (body mass index <0.89 in 24/31 patients) but limited to the last year of life. Biomarker review identified 30 categories of mPC biomarkers in need of winnowing in future trials. All findings require validation in larger cohorts, preferably alongside data from this study. CONCLUSIONS The study identified novel outcome subgroups for future validation and provides "vision for mPC precision oncology 2020-2050" draft recommendations for future data collection and biomarker studies. PATIENT SUMMARY To better understand variation in metastatic prostate cancer behavior, we assembled and analyzed longitudinal clinical and autopsy records in 33 men. We identified novel outcomes, phenotypes, and aspects of disease burden to be tested and refined in future trials.
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Affiliation(s)
- Juho Jasu
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | - Teemu Tolonen
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
- Fimlab Laboratories, Department of Pathology, Tampere University Hospital, Tampere, Finland
| | - Emmanuel S. Antonarakis
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | | | - Susan Halabi
- Duke University Medical Center, Department of Biostatistics and Bioinformatics, Durham, NC, USA
| | - Mario A. Eisenberger
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Michael A. Carducci
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Yohann Loriot
- Department of Medical Oncology, Gustave Roussy, Villejuif, France
| | - Kim Van der Eecken
- Department of Medical and Forensic Pathology, Ghent University, Ghent, Belgium
| | - Martijn Lolkema
- Department of Medical Oncology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Charles J. Ryan
- Department of Medicine, Division of Oncology, University of Minnesota, Minneapolis, MN, USA
| | - Sinja Taavitsainen
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | - Silke Gillessen
- Institute of Oncology of Southern Switzerland, Bellinzona, Switzerland
- Faculty of Biosciences, Università della Svizzera Italiana, Lugano, Switzerland
- Faculty of Cancer Science, University of Manchester, UK
| | - Gunilla Högnäs
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | - Timo Talvitie
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | | | - Antti Koskenalho
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | - Piet Ost
- Department of Radiation Oncology, Iridium Netwerk, Wilrijk (Antwerp), Belgium
- Department of Human Structure and Repair, Ghent University, Ghent, Belgium
| | - Teemu J. Murtola
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
- TAYS Cancer Center, Department of Urology, Tampere, Finland
| | - Irina Rinta-Kiikka
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
- TAYS Cancer Center, Department of Radiology, Tampere, Finland
| | - Teuvo Tammela
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
- TAYS Cancer Center, Department of Urology, Tampere, Finland
| | - Anssi Auvinen
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland
| | - Paula Kujala
- Fimlab Laboratories, Department of Pathology, Tampere University Hospital, Tampere, Finland
| | - Thomas J. Smith
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Pirkko-Liisa Kellokumpu-Lehtinen
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | - William B. Isaacs
- Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Matti Nykter
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | - Juha Kesseli
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
| | - G. Steven Bova
- Faculty of Medicine and Health Technology, Prostate Cancer Research Center, Tampere University and Tays Cancer Center, Tampere, FI-33014, Finland
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Boegemann M, Arsov C, Hadaschik B, Herkommer K, Imkamp F, Nofer JR, Gerß J, Albers P, Semjonow A. Discordant prostate specific antigen test results despite WHO assay standardization. Int J Biol Markers 2018; 33:275-282. [DOI: 10.1177/1724600818754750] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Introduction: Total PSA (tPSA) and free PSA (fPSA) are the most commonly used biomarkers for early detection of prostate cancer. Despite standardization efforts, many available PSA assays may still produce discordant results. In the present study, we compared four PSA assays calibrated to the WHO standards 96/670 and 96/668 for tPSA and fPSA, respectively. Methods: Within the scope of the Prostate Cancer Early Detection Study Based on a ‘‘Baseline’’ PSA Value in Young Men (PROBASE), we tested tPSA and fPSA in serum samples from 50 patients in the four different PROBASE sites using four WHO-calibrated assays from Roche (Elecsys, Cobas), Beckman-Coulter (Access-II) and Siemens (ADVIA Centaur). The comparison was performed using the Passing–Bablok regression method. Results: Compared to Access, the median tPSA levels for Centaur, Elecsys, and Cobas were +3%, +11%–20%, and +17%–23%, respectively, while for median fPSA levels the differences for Centaur, Elecsys, and Cobas were +49%, +29%–31%, and +22%, respectively. Discussion: Despite all investigated assays being WHO-calibrated, the Elecsys and Cobas tPSA assays produced considerably higher results than the Access and Centaur assays. Differences in fPSA-recovery between all investigated assays were even more pronounced. When applying the tPSA cutoff of 3.1 μg/L recommended for WHO-calibrated assays, the use of higher calibrated assays may lead to unnecessary prostate biopsies. Conversely, if the historical threshold of 4 μg/L is applied when using WHO-calibrated assays, it could lead to falsely omitted prostate biopsies.
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Affiliation(s)
- Martin Boegemann
- Department of Urology, Prostate Center, University Hospital Münster, Muenster, Germany
| | - Christian Arsov
- Department of Urology, Dusseldorf University Medical Center, Dusseldorf, Germany
| | - Boris Hadaschik
- Department of Urology, University Hospital Essen, Essen, Germany
| | - Kathleen Herkommer
- Department of Urology, Technical University of Munich Klinikum rechts der Isar, Munich, Germany
| | - Florian Imkamp
- Department of Urology, Hannover University Medical Center, Hannover, Germany
| | - Jerzy-Roch Nofer
- Center for Laboratory Medicine, University Hospital Muenster, Muenster, Germany
| | - Joachim Gerß
- Institute of Biostatistics and Clinical Research of the Westfalian Wilhelms-University Muenster, Muenster, Germany
| | - Peter Albers
- Department of Urology, Dusseldorf University Medical Center, Dusseldorf, Germany
| | - Axel Semjonow
- Department of Urology, Prostate Center, University Hospital Münster, Muenster, Germany
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Stephan C, Bangma C, Vignati G, Bartsch G, Lein M, Jung K, Philippe M, Semjonow A, Catalona WJ. 20–25% Lower Concentrations of Total and Free Prostate-Specific Antigen (PSA) after Calibration of PSA Assays to the WHO Reference Materials – Analysis of 1098 Patients in Four Centers. Int J Biol Markers 2018. [DOI: 10.1177/172460080902400201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Aim To examine the potential clinical implications of the recalibration of total prostate-specific antigen (PSA) and free PSA (fPSA) assays to the World Health Organization (WHO) standard materials. Material and methods Data from 1098 patients with or without clinically detected prostate cancer (PCa) from four independent cohort studies were compared using commercial assays calibrated to the traditional Hybritech® PSA (PSA-Hyb) and fPSA (fPSA-Hyb) standards and to the WHO 96/670 (PSA-WHO) and 96/668 (fPSA-WHO) standards. The Access® Immunoassay System (Beckman Coulter, Inc.) was used in all studies. Results All studies showed 20% to 25% lower PSA and fPSA test results with the WHO-standardized assays. No significant change in %fPSA (fPSA/PSA × 100) was observed. Continuing to use the traditional clinical PSA cutoffs obtained with the Hybritech standard after changing to the PSA-WHO standard could result in up to one-third of prostate cancer cases being missed. Conclusions: Manufacturers should fully inform laboratories about a calibration change and its clinical impact. Laboratory reports for PSA measurements should indicate the assay's manufacturer and which calibration standard was used to avoid misleading information concerning PCa risk
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Affiliation(s)
- Carsten Stephan
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin - Germany
| | - Chris Bangma
- Department of Urology, Erasmus Medical Center and University, Rotterdam - The Netherlands
| | - Giulio Vignati
- Center of Endocrine and Metabolic Diseases, G. Fornaroli Hospital, Magenta - Italy
| | - Georg Bartsch
- Department of Urology, Medical University Innsbruck, Innsbruck - Austria
| | - Michael Lein
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin - Germany
- Berlin Institute for Urologic Research, Berlin - Germany
| | - Klaus Jung
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin - Germany
- Berlin Institute for Urologic Research, Berlin - Germany
| | - Marianne Philippe
- Department of Clinical Biochemistry, Cliniques Universitaires Saint-Luc, Brussels - Belgium
| | - Axel Semjonow
- Prostate Center, University Clinic Münster - Germany
| | - William J. Catalona
- Department of Urology, Northwestern Feinberg School of Medicine, Chicago, IL - USA
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