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Zhou J, Yu M, Ding J, Qi J. Does the Gleason Score 7 Upgrading Always Predict Worse Prognosis? Clin Genitourin Cancer 2023; 21:e412-e421. [PMID: 37248147 DOI: 10.1016/j.clgc.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/03/2023] [Accepted: 05/03/2023] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To determine the clinical significance of Gleason score(GS) 7 upgraded on radical prostatectomy(RP) and its impact on the prognosis of patients. PATIENTS AND METHODS We used the Surveillance, Epidemiology, and End Results (SEER) database to study 8832 men diagnosed with M0 GS 3+4/4+3 prostate cancer (PCa) from 2010 to 2015 treated by RP. Logistic regression was used to analyze the effect of clinicopathological characteristics on the Gleason sore upgraded. Cox hazards regression analysis was performed to find significant factors of overall survival (OS). RESULTS A total of 6237 (70.6%) biopsy GS 3+4 patients and 2595(29.4%) biopsy GS 4+3 patients were included in the study. Univariate and multivariate logistic regression analysis found that prostate-specific antigen (PSA)>20ng/ml, T stage 3-4, lymph node metastasis are independent risk factors in predicting the incidence of GS upgraded after RP (all P<0.05). Through multivariate analysis, we found that black race, GS upgraded, chemotherapy played significant roles in predicting poor OS (all P<0.05). It was surprising to find that the biopsy GS upgraded in patients with PSA 0-4ng/ml and 4.1-10ng/ml had a significant association with poor OS (all P<0.05). Multivariate analysis showed that only in patients with PSA 4-10ng/ml, biopsy GS upgrade had a statistically important relationship with poor OS (P=0.046). CONCLUSIONS Not all patients with GS 7 upgraded had a worse prognosis than those without GS upgraded. Only in patients with PSA 4.1-10ng/ml, biopsy GS 7 upgraded was an independent risk factor affecting OS.
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Affiliation(s)
- Jiatong Zhou
- Department of Urology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Minghao Yu
- Department of Urology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jie Ding
- Department of Urology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Jun Qi
- Department of Urology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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2
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SATB1, genomic instability and Gleason grading constitute a novel risk score for prostate cancer. Sci Rep 2021; 11:24446. [PMID: 34961766 PMCID: PMC8712510 DOI: 10.1038/s41598-021-03702-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 11/23/2021] [Indexed: 12/09/2022] Open
Abstract
Current prostate cancer risk classifications rely on clinicopathological parameters resulting in uncertainties for prognostication. To improve individual risk stratification, we examined the predictive value of selected proteins with respect to tumor heterogeneity and genomic instability. We assessed the degree of genomic instability in 50 radical prostatectomy specimens by DNA-Image-Cytometry and evaluated protein expression in related 199 tissue-microarray (TMA) cores. Immunohistochemical data of SATB1, SPIN1, TPM4, VIME and TBB5 were correlated with the degree of genomic instability, established clinical risk factors and overall survival. Genomic instability was associated with a GS ≥ 7 (p = 0.001) and worse overall survival (p = 0.008). A positive SATB1 expression was associated with a GS ≤ 6 (p = 0.040), genomic stability (p = 0.027), and was a predictor for increased overall survival (p = 0.023). High expression of SPIN1 was also associated with longer overall survival (p = 0.048) and lower preoperative PSA-values (p = 0.047). The combination of SATB1 expression, genomic instability, and GS lead to a novel Prostate Cancer Prediction Score (PCP-Score) which outperforms the current D’Amico et al. stratification for predicting overall survival. Low SATB1 expression, genomic instability and GS ≥ 7 were identified as markers for poor prognosis. Their combination overcomes current clinical risk stratification regimes.
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Wolny-Rokicka E, Petrasz P, Krajewski W, Sulimiera Michalak S, Tukiendorf A. Analysis of Serum Markers with Regard to Treatment Procedures in Advanced Stage Prostate Cancer Patients. Med Sci Monit 2020; 26:e925860. [PMID: 33326414 PMCID: PMC7805249 DOI: 10.12659/msm.925860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background Biomarkers predicting the efficacy of treatment for locally limited prostate cancer are greatly needed. This knowledge could improve the classification of patients for different methods of treatment and enable better recognition of groups with higher risk of biological recurrence. We prospectively assessed serial blood levels of apoptotic biomarkers and correlated them with response to treatment and clinical factors. Material/Methods Blood was collected from 25 patients with prostate cancer before and after surgery, 16 healthy volunteers with benign prostatic hyperplasia (BPH), and 14 patients with metastasized disease. Immunoenzymatic methods were used to determine circulating apoptotic and inflammatory mediators, including tumor necrosis factor α (TNF-α), type I receptor (TNFRI), and type II receptor (TNFRII); FAS ligand (FasL); TNF-related apoptosis-inducing ligand (TRIAL); caspase 8 (Cas8); caspase 9 (Cas9); DNA methylation (metDNA); P-selectin; and high-sensitivity C-reactive protein. The total circulating fragments of cell-free DNA (cfDNA) were measured directly in serum. Results Peripheral serum prostate-specific antigen increased rapidly together with cfDNA. A negative correlation was noted between tumor volume and TNFRI and TNFRII. Postsurgery P-selectin level was decreased, and metDNA and TNFRII levels were increased. Three comparisons were made between patient groups: surgical vs. BPH; surgical vs. palliative; and palliative vs. BPH. TNFRI, TNFRII, metDNA, P-selectin, Cas8, and FasL were shown to have significant roles. Conclusions The study indicated significant roles for cfDNA, both TNF receptors, metDNA, and P-selectin as serum biomarkers in patients with prostate cancer.
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Affiliation(s)
- Edyta Wolny-Rokicka
- Department of Radiotherapy, Multidisciplinary Hospital in Gorzów Wielkopolski, Gorzów Wielkopolski, Poland
| | - Piotr Petrasz
- Department of Urology, Multidisciplinary Hospital in Gorzów Wielkopolski, Gorzów Wielkopolski, Poland
| | - Wojciech Krajewski
- Department of Urology and Oncologic Urology, Wrocław Medical University, Wrocław, Poland
| | | | - Andrzej Tukiendorf
- Social Medicine Department, Medical University in Wrocław, Wrocław, Poland
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Kotova ES, Savochkina YA, Doludin YV, Vasilyev AO, Prilepskay EA, Potoldykova NV, Babalyan KA, Kanygina AV, Morozov AO, Govorov AV, Enikeev DV, Kostryukova ES, Ilina EN, Govorun VM, Pushkar DY, Sharova EI. Identification of Clinically Significant Prostate Cancer by Combined PCA3 and AMACR mRNA Detection in Urine Samples. Res Rep Urol 2020; 12:403-413. [PMID: 32984088 PMCID: PMC7505712 DOI: 10.2147/rru.s262310] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/19/2020] [Indexed: 12/27/2022] Open
Abstract
Purpose Preclinical evaluation of PCA3 and AMACR transcript simultaneous detection in urine to diagnose clinical significant prostate cancer (prostate cancer with Gleason score ≥7) in a Russian cohort. Patients and Methods We analyzed urine samples of patients with a total serum PSA ≥2 ng/mL: 31 men with prostate cancer scheduled for radical prostatectomy, 128 men scheduled for first diagnostic biopsy (prebiopsy cohort). PCA3, AMACR, PSA and GPI transcripts were detected by multiplex reverse transcription quantitative polymerase chain reaction, and the results were used for scores for calculation and statistical analysis. Results There was no significant difference between clinically significant and nonsignificant prostate cancer PCA3 scores. However, there was a significant difference in the AMACR score (patients scheduled for radical prostatectomy p=0.0088, prebiopsy cohort p=0.029). We estimated AUCs, optimal cutoffs, sensitivities and specificities for PCa and csPCa detection in the prebiopsy cohort by tPSA, PCA3 score, PCPT Risk Calculator and classification models based on tPSA, PCA3 score and AMACR score. In the clinically significant prostate cancer ROC analysis, the PCA3 score AUC was 0.632 (95%CI: 0.511–0.752), the AMACR score AUC was 0.711 (95%CI: 0.617–0.806) and AUC of classification model based on the PCA3 score, the AMACR score and total PSA was 0.72 (95%CI: 0.58–0.83). In addition, the correlation of the AMACR score with the ratio of total RNA and RNA of prostate cells in urine was shown (tau=0.347, p=6.542e–09). Significant amounts of nonprostate RNA in urine may be a limitation for the AMACR score use. Conclusion The AMACR score is a good predictor of clinically significant prostate cancer. Significant amounts of nonprostate RNA in urine may be a limitation for the AMACR score use. Evaluation of the AMACR score and classification models based on it for clinically significant prostate cancer detection with larger samples and a follow-up analysis is promising.
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Affiliation(s)
- Elena S Kotova
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | | | - Yuriy V Doludin
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - Alexander O Vasilyev
- Department of Urology, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Elena A Prilepskay
- Department of Urology, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | | | - Konstantin A Babalyan
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Alexandra V Kanygina
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | | | - Alexander V Govorov
- Department of Urology, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | | | - Elena S Kostryukova
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Elena N Ilina
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Vadim M Govorun
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Dmitry Y Pushkar
- Department of Urology, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Elena I Sharova
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
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Devine W, Giganti F, Johnston EW, Sidhu HS, Panagiotaki E, Punwani S, Alexander DC, Atkinson D. Simplified Luminal Water Imaging for the Detection of Prostate Cancer From Multiecho T 2 MR Images. J Magn Reson Imaging 2019; 50:910-917. [PMID: 30566264 PMCID: PMC6767562 DOI: 10.1002/jmri.26608] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/22/2018] [Accepted: 11/28/2018] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Luminal water imaging (LWI) suffers less from imaging artifacts than the diffusion-weighted imaging used in multiparametric MRI of the prostate. LWI obtains multicompartment tissue information from a multiecho T2 dataset. PURPOSE To compare a simplified LWI technique with apparent diffusion coefficient (ADC) in classifying lesions based on groupings of PI-RADS v2 scores. Secondary aims were to investigate whether LWI differentiates between histologically confirmed tumor and normal tissue as effectively as ADC, and whether LWI is correlated with the multicompartment parameters of the vascular, extracellular, and restricted diffusion for cytometry in tumors (VERDICT) diffusion model. STUDY TYPE A subset of a larger prospective study. POPULATION In all, 65 male patients aged 49-79 were scanned. FIELD STRENGTH/SEQUENCE A 32-echo T2 and a six b-value diffusion sequence (0, 90, 500, 1500, 2000, 3000 s/mm2 ) at 3T. ASSESSMENT Regions of interest were placed by a board-certified radiologist in areas of lesion and benign tissue and given PI-RADS v2 scores. STATISTICAL TESTS Receiver operating characteristic and logistic regression analyses were performed. RESULTS LWI classifies tissue as PI-RADS 1,2 or PI-RADS 3,4,5 with an area under curve (AUC) value of 0.779, compared with 0.764 for ADC. LWI differentiated histologically confirmed malignant from nonmalignant tissue with AUC, sensitivity, and specificity values of 0.81, 75%, and 87%, compared with 0.75, 83%, and 67% for ADC. The microstructural basis of the LWI technique is further suggested by the correspondence with the VERDICT diffusion-based microstructural imaging technique, with α, A1 , A2 , and LWF showing significant correlations. DATA CONCLUSION LWI alone can predict PI-RADS v2 score groupings and detect histologically confirmed tumors with an ability similar to ADC alone without the limitations of diffusion-weighted MRI. This is important, given that ADC has an advantage in these tests as it already informs PI-RADS v2 scoring. LWI also provides multicompartment information that has an explicit biophysical interpretation, unlike ADC. LEVEL OF EVIDENCE 3 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;50:910-917.
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Affiliation(s)
- William Devine
- Centre for Medical ImagingUniversity College LondonLondonUnited Kingdom
| | - Francesco Giganti
- Department of RadiologyUniversity College London Hospital NHS Foundation TrustLondonUnited Kingdom
- Division of Surgery and Interventional ScienceUniversity College LondonLondonUnited Kingdom
| | | | - Harbir S. Sidhu
- Centre for Medical ImagingUniversity College LondonLondonUnited Kingdom
| | - Eleftheria Panagiotaki
- Centre for Medical Image Computing, Department of Computer ScienceUniversity College LondonLondonUnited Kingdom
| | - Shonit Punwani
- Centre for Medical ImagingUniversity College LondonLondonUnited Kingdom
| | - Daniel C. Alexander
- Centre for Medical Image Computing, Department of Computer ScienceUniversity College LondonLondonUnited Kingdom
| | - David Atkinson
- Centre for Medical ImagingUniversity College LondonLondonUnited Kingdom
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Liquid Biopsy Potential Biomarkers in Prostate Cancer. Diagnostics (Basel) 2018; 8:diagnostics8040068. [PMID: 30698162 PMCID: PMC6316409 DOI: 10.3390/diagnostics8040068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/12/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022] Open
Abstract
Prostate cancer (PCa) is the second most common cancer in men worldwide with an incidence of 14.8% and a mortality of 6.6%. Shortcomings in comprehensive medical check-ups in low- and middle-income countries lead to delayed detection of PCa and are causative of high numbers of advanced PCa cases at first diagnosis. The performance of available biomarkers is still insufficient and limited applicability, including logistical and financial burdens, impedes comprehensive implementation into health care systems. There is broad agreement on the need of new biomarkers to improve (i) early detection of PCa, (ii) risk stratification, (iii) prognosis, and (iv) treatment monitoring. This review focuses on liquid biopsy tests distinguishing high-grade significant (Gleason score (GS) ≥ 7) from low-grade indolent PCa. Available biomarkers still lack performance in risk stratification of biopsy naïve patients. However, biomarkers with highly negative predictive values may help to reduce unnecessary biopsies. Risk calculators using integrative scoring systems clearly improve decision-making for invasive prostate biopsy. Emerging biomarkers have the potential to substitute PSA and improve the overall performance of risk calculators. Until then, PSA should be used and may be replaced whenever enough evidence has accumulated for better performance of a new biomarker.
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7
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Multimodal Radiomic Features for the Predicting Gleason Score of Prostate Cancer. Cancers (Basel) 2018; 10:cancers10080249. [PMID: 30060575 PMCID: PMC6116195 DOI: 10.3390/cancers10080249] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/24/2018] [Accepted: 07/26/2018] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Novel radiomic features are enabling the extraction of biological data from routine sequences of MRI images. This study's purpose was to establish a new model, based on the joint intensity matrix (JIM), to predict the Gleason score (GS) of prostate cancer (PCa) patients. METHODS A retrospective dataset comprised of the diagnostic imaging data of 99 PCa patients was used, extracted from The Cancer Imaging Archive's (TCIA) T2-Weighted (T2-WI) and apparent diffusion coefficient (ADC) images. Radiomic features derived from JIM and the grey level co-occurrence matrix (GLCM) were extracted from the reported tumor locations. The Kruskal-Wallis test and Spearman's rank correlation identified features related to the GS. The Random Forest classifier model was implemented to identify the best performing signature of JIM and GLCM radiomic features to predict for GS. RESULTS Five JIM-derived features: contrast, homogeneity, difference variance, dissimilarity, and inverse difference were independent predictors of GS (p < 0.05). Combined JIM and GLCM analysis provided the best performing area-under-the-curve, with values of 78.40% for GS ≤ 6, 82.35% for GS = 3 + 4, and 64.76% for GS ≥ 4 + 3. CONCLUSION This retrospective study produced a novel predictive model for GS by the incorporation of JIM data from standard diagnostic MRI images.
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8
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Hoffmann MA, Miederer M, Wieler HJ, Ruf C, Jakobs FM, Schreckenberger M. Diagnostic performance of 68Gallium-PSMA-11 PET/CT to detect significant prostate cancer and comparison with 18FEC PET/CT. Oncotarget 2017; 8:111073-111083. [PMID: 29340038 PMCID: PMC5762306 DOI: 10.18632/oncotarget.22441] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/27/2017] [Indexed: 12/14/2022] Open
Abstract
Background Radiolabeled prostate-specific membrane antigen (PSMA) has proven to be a highly accurate method to detect recurrence and metastases of prostate cancer, but only sparse data is available about its performance in the diagnosis of clinically significant primary prostate cancer. Methods We compared 68Ga-PSMA-11 PET/CT in 25 patients with 18FEC PET/CT in 40 patients with suspected prostate carcinoma based on an increased PSA level.The PET/CT results were compared with the histopathologic Gleason Score (GS) of biopsies. Results The 68Ga-PSMA-11 PET/CT revealed highly suspect prostatic lesions (maximum standardized uptake value/SUVmax >2.5) in 21/25 patients (84%), associated with GS≥6 (low-grade/high-grade carcinoma). Two histopathologic non-malignancy-relevant cases (GS<6) had PSMA-SUVmax ≤2.5; all histopathologic high-grade cases (GS≥7b) showed PSMA-SUVmax >12.0 which further increased with rising GS. There were 2 false positives and no false negative findings for high-grade prostate cancer using a cut off-level for SUVmax of 2.5.In contrast, the 18FEC PET/CT showed suspected malignant lesions in 38/40 patients (95%), which included 3 lesions with GS<6. The mean SUVmax values did not differ with different GS. There were 11 false positives and 1 false negative for detection of high-grade prostate cancer (cut off 2.5).By means of ROC analysis a SUVmax of 5.4 was found to be an optimal cut off-level to distinguish between low- and high-grade carcinoma in 68Ga-PSMA-11 PET/CT (AUC=0.9692; 95% CI 0.9086;1.0000;SD(AUC)=0.0309)). Choosing a cut off-level of SUVmax5.4, 68Ga-PSMA-11 PET/CT was able to distinguish between GS ≤7a/≥7b with a sensitivity of 84%, a specificity of 100%, a negative predictive value (NPV) of 67%, and an efficiency of 88% (p<0.001).The ROC analysis revealed a SUVmax 6.5 as an optimal cut off-level to distinguish between low- and high-grade carcinoma in 18FEC PET/CT (AUC=0.7470; 95% CI 0.5919;0.9020;SD(AUC)=0.0791) with a sensitivity of 61% and a specificity of 92%; but the efficiency was only 70% and the NPV 50% (p=0.01). Conclusion 68Ga-PSMA-11 PET/CT guided biopsy of the prostate increases diagnostic precision and is likely to help to reduce overtreatment of low-grade malignant disease as well as detect the foci of the highest Gleason pattern. Both methods (68Ga-PSMA-11,18FEC) were suitable to detect primary prostate cancer, but the excellent image quality, the higher specificity and the good correlation of positive scans with GS are advantages of 68Ga-PSMA-11.
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Affiliation(s)
- Manuela A Hoffmann
- Supervisory Center for Medical Radiation Protection, Bundeswehr Medical Service Headquarters, Koblenz, Germany.,Department of Nuclear Medicine, Johannes Gutenberg-University, Mainz, Germany.,Department of Nuclear Medicine, Bundeswehr Central Hospital, Koblenz, Germany
| | - Matthias Miederer
- Department of Nuclear Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Helmut J Wieler
- Department of Nuclear Medicine, Bundeswehr Central Hospital, Koblenz, Germany
| | - Christian Ruf
- Department of Urology, Bundeswehr Central Hospital, Koblenz, Germany
| | - Frank M Jakobs
- Department of Epidemiology, German Air Force Center for Aerospace Medicine, Fürstenfeldbruck, Germany
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9
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Hoffmann MA, Wieler HJ, Jakobs FM, Taymoorian K, Gerhards A, Miederer M, Schreckenberger M. [Diagnostic significance of multiparametric MRI combined with US-fusion guided biopsy of the prostate in patients with increased PSA levels and negative standard biopsy results to detect significant prostate cancer - Correlation with the Gleason score. Korrelation mit dem Gleason Score]. Nuklearmedizin 2017; 56:147-155. [PMID: 28715042 DOI: 10.3413/nukmed-0871-16-12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 06/09/2017] [Indexed: 01/05/2023]
Abstract
AIMS To increase diagnostic precision and to reduce overtreatment of low-risk malignant disease, multiparametric MRI (mpMRI) combined with ultrasound (US) fusion guided biopsy of the prostate were performed. METHODS In 99 male patients with increased PSA plasma levels and previous negative standard biopsy procedures, mpMRI was carried out followed by US fusion guided perineal biopsy. PI-RADS-Data (PS) of mpMRI and histopathological Gleason score (GS) were categorized and statistically compared. RESULTS Lesions in 72/99 (73 %) of patients were determined to be suspect of malignancy, based on a PS 4 or 5. In 33/99 (33 %) of patients, malignancy could not be confirmed by histopathology. With regard to the remaining 66 patients with previous negative biopsy results, 42 (64 %) were diagnosed with a low-grade carcinoma (GS 6, 7a) and 24 (36 %) with a high-grade carcinoma (GS ≥ 7b). The proportion of corresponding results in mpMRI (PS 4-5) when a high-grade carcinoma had been detected, was 21/24 (88 %), which related to a sensitivity of 88 % and a negative predictive value (NPV) of 85 % (p = 0,002). In addition, 35 of 42 patients (83%), graded PS 4-5 in mpMRI, were diagnosed with low-grade carcinoma-positive (p < 0,001). Sensitivity to differentiation between low- and high-grade carcinomas (GS ≤ 7a vs. ≥ 7b) by means of PS was 88 % with a NPV of 70 % (p = 0,74). CONCLUSION Our results suggest that mpMRI combined with US-fusion guided biopsy is able to detect considerably higher rates of clinically relevant prostate malignancies compared to conventional diagnostic procedures. However, no statistical significance could be shown regarding the differentiation between high- and low-grade carcinomas. It is hoped that the hybrid methods PSMA-PET/CT or PSMA-PET/MRI will lead to the next optimization step in the differentiation between high- and low-grade carcinomas which so far has been unsatisfactory.
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Affiliation(s)
- Manuela A Hoffmann
- Supervisory Center for Medical Radiation Protection, Bundeswehr Medical Service Headquarters, Koblenz, Germany, Tel: +49 (0) 261-896 26320, E-Mail: .,Department of Nuclear Medicine, University Medical Center Mainz, Mainz, Germany
| | - Helmut J Wieler
- Clinic for Nuclear Medicine, Central Military Hospital, Koblenz, Germany
| | - Frank M Jakobs
- German Air Force Center for Aerospace Medicine, Fürstenfeldbruck, Germany
| | | | - Arnd Gerhards
- Radiologisches Institut Dr. von Essen, Koblenz, Germany
| | - Matthias Miederer
- Department of Nuclear Medicine, University Medical Center Mainz, Mainz, Germany
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10
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ProPSA and the Prostate Health Index as predictive markers for aggressiveness in low-risk prostate cancer—results from an international multicenter study. Prostate Cancer Prostatic Dis 2017; 20:271-275. [DOI: 10.1038/pcan.2017.3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 12/23/2016] [Accepted: 01/09/2017] [Indexed: 01/01/2023]
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11
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Li X, Ji Y, Han G, Li X, Fan Z, Li Y, Zhong Y, Cao J, Zhao J, Zhang M, Wen J, Goscinski MA, Nesland JM, Suo Z. MPC1 and MPC2 expressions are associated with favorable clinical outcomes in prostate cancer. BMC Cancer 2016; 16:894. [PMID: 27852261 PMCID: PMC5112705 DOI: 10.1186/s12885-016-2941-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 10/28/2016] [Indexed: 11/10/2022] Open
Abstract
Background Cancer cells exhibit an altered metabolism, which is characterized by a preference for aerobic glycolysis more than mitochondrial oxidation of pyruvate. Mitochondrial pyruvate carrier 1 (MPC1) and mitochondrial pyruvate carrier 2 (MPC2) play a bottleneck role by transporting pyruvate into mitochondrial through the mitochondrial inner membrane. Therefore, their protein expression in cancers may be of clinical consequences. There are studies showing low levels of MPC1 expression in colon, kidney and lung cancers, and the expression of MPC1 correlates with poor prognosis. However, the expression status of MPC1 and MPC2 in prostate cancer (PCA) is unclear. Methods In this study, expression of MPC1 and MPC2 in LNCaP and DU145 prostate cancer cell lines was examined by immunocytochemistry (ICC) and Western blotting. Compared to the LNCaP cells, lower levels of MPC1 and MPC2 expression in the DU145 cell line was identified. We then extended our study to 88 patients with prostate cancer who underwent transurethral electro-vaporization of prostate or radical prostatectomy at the First Affiliated Hospital of Zhengzhou University, Henan, China. Patient-derived paraffin embedded PCA specimens were collected for immunohistochemistry (IHC). Correlations with clinicopathologic factors were evaluated by Chi-square or Fisher´s exact probability tests. Overall survival (OS) rates were determined using the Kaplan-Meier estimator. The Cox proportional hazard regression model was used in univariate analysis and multivariate analysis to identify factors significantly correlated with prognosis. Results Linear regression analysis revealed that MPC1 expression level was positively correlated with MPC2 expression (r = 0.375, P = 0.006) in the prostate cancers. MPC1 expression was negatively associated with UICC stage (P = 0.031). While UICC stage (P < 0.001) and lymph node metastasis (P = 0.002) were negatively associated with MPC2 expression. Positive MPC1 or MPC2 expression in cancer tissues was significantly associated with higher OS (P < 0.05). The multivariate analysis showed that both MPC1 and MPC2 expressions in PCA were independent prognostic factors for higher OS (For MPC1: RR = 0.654, 95% CI: 0.621-0690, P < 0.001; For MPC2: RR = 0.696, 95% CI: 0.660-0.734, P < 0.001). Conclusions Our study indicates that MPC1 and MPC2 expressions are of prognostic values in PCAs and that positive expression of MPC1 or MPC2 is a predictor of favorable outcome.
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Affiliation(s)
- Xiaoli Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China.,Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Yasai Ji
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Gaoyang Han
- Department of Thoracic Surgery, The First Affiliated Hospital of Xinxiang Medical University, Weihui City, Henan Province, China
| | - Xiaoran Li
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Zhirui Fan
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yaqing Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China.,Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Yali Zhong
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jing Cao
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China.,Department of Pathology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jing Zhao
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Mingzhi Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jianguo Wen
- The Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Mariusz Adam Goscinski
- Departments of Surgery, The Norwegian Radium Hospital, Oslo University Hospital, Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Jahn M Nesland
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Zhenhe Suo
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China. .,Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway.
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12
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Musunuru HB, Yamamoto T, Klotz L, Ghanem G, Mamedov A, Sethukavalan P, Jethava V, Jain S, Zhang L, Vesprini D, Loblaw A. Active Surveillance for Intermediate Risk Prostate Cancer: Survival Outcomes in the Sunnybrook Experience. J Urol 2016; 196:1651-1658. [PMID: 27569437 DOI: 10.1016/j.juro.2016.06.102] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2016] [Indexed: 12/22/2022]
Abstract
PURPOSE To assess the applicability of active surveillance in patients with intermediate risk prostate cancer, we compared the survival outcomes of patients with low risk and intermediate risk disease. MATERIALS AND METHODS Active surveillance was offered to all patients with low risk (cT1-T2b and Gleason score 6 and prostate specific antigen 10 ng/ml or less) and select intermediate risk disease (age greater than 70 years with cT2c or prostate specific antigen 15 ng/ml or less, or Gleason score 3+4 or less). Data from November 1995 to May 2013 were extracted from a prospectively collected database. The primary outcome was metastasis-free survival, and secondary outcomes were overall survival, cause specific survival and treatment-free survival. RESULTS A total of 213 intermediate risk and 732 low risk cases were identified. Median age was 72 years (IQR 67.3, 76.8) in the intermediate risk cohort and 67 years (IQR 60.6, 71.9) in the low risk group. Median followup was comparable (6.7 years for intermediate risk vs 6.5 years for low risk). Gleason 7 disease comprised 60% of the intermediate risk cohort. The 15-year metastasis-free, overall, cause specific and treatment-free survival rates were inferior in the intermediate risk group (metastasis-free survival HR 3.14, 95% CI 1.51-6.53, p=0.001, 82% for intermediate risk vs 95% for low risk). On further evaluation the estimated 15-year metastasis-free survival for cases of Gleason 6 or less with prostate specific antigen less than 10 ng/ml was 94%, Gleason 6 or less with prostate specific antigen 10 to 20 ng/ml was 94%, Gleason 3+4 with prostate specific antigen 20 ng/ml or less was 84% and Gleason 4+3 with prostate specific antigen 20 ng/ml or less was 63%. CONCLUSIONS These data support the use of active surveillance in low risk and intermediate risk cases of Gleason 6 but not Gleason 7 prostate cancer. Multiparametric magnetic resonance imaging and novel biomarkers might be vital in detecting favorable Gleason 7 disease.
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Affiliation(s)
- Hima Bindu Musunuru
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Toshihiro Yamamoto
- Department of Surgical Urology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Laurence Klotz
- Department of Surgical Urology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Gabriella Ghanem
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Alexandre Mamedov
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Peraka Sethukavalan
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Vibhuti Jethava
- Department of Surgical Urology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Suneil Jain
- Centre for Cancer Research and Cell Biology, Queen's University, Belfast, Ireland
| | - Liying Zhang
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Danny Vesprini
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Andrew Loblaw
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Measurement and Evaluation, University of Toronto, Toronto, Ontario, Canada.
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13
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Hansen N, Patruno G, Wadhwa K, Gaziev G, Miano R, Barrett T, Gnanapragasam V, Doble A, Warren A, Bratt O, Kastner C. Magnetic Resonance and Ultrasound Image Fusion Supported Transperineal Prostate Biopsy Using the Ginsburg Protocol: Technique, Learning Points, and Biopsy Results. Eur Urol 2016; 70:332-40. [PMID: 26995327 DOI: 10.1016/j.eururo.2016.02.064] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 02/26/2016] [Indexed: 12/24/2022]
Abstract
BACKGROUND Prostate biopsy supported by transperineal image fusion has recently been developed as a new method to the improve accuracy of prostate cancer detection. OBJECTIVE To describe the Ginsburg protocol for transperineal prostate biopsy supported by multiparametric magnetic resonance imaging (mpMRI) and transrectal ultrasound (TRUS) image fusion, provide learning points for its application, and report biopsy results. The article is supplemented by a Surgery in Motion video. DESIGN, SETTING, AND PARTICIPANTS This single-centre retrospective outcome study included 534 patients from March 2012 to October 2015. A total of 107 had no previous prostate biopsy, 295 had benign TRUS-guided biopsies, and 159 were on active surveillance for low-risk cancer. SURGICAL PROCEDURE A Likert scale reported mpMRI for suspicion of cancer from 1 (no suspicion) to 5 (cancer highly likely). Transperineal biopsies were obtained under general anaesthesia using BiopSee fusion software (Medcom, Darmstadt, Germany). All patients had systematic biopsies, two cores from each of 12 anatomic sectors. Likert 3-5 lesions were targeted with a further two cores per lesion. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Any cancer and Gleason score 7-10 cancer on biopsy were noted. Descriptive statistics and positive predictive values (PPVs) and negative predictive values (NPVs) were calculated. RESULTS AND LIMITATIONS The detection rate of Gleason score 7-10 cancer was similar across clinical groups. Likert scale 3-5 MRI lesions were reported in 378 (71%) of the patients. Cancer was detected in 249 (66%) and Gleason score 7-10 cancer was noted in 157 (42%) of these patients. PPV for detecting 7-10 cancer was 0.15 for Likert score 3, 0.43 for score 4, and 0.63 for score 5. NPV of Likert 1-2 findings was 0.87 for Gleason score 7-10 and 0.97 for Gleason score ≥4+3=7 cancer. Limitations include lack of data on complications. CONCLUSIONS Transperineal prostate biopsy supported by MRI/TRUS image fusion using the Ginsburg protocol yielded high detection rates of Gleason score 7-10 cancer. Because the NPV for excluding Gleason score 7-10 cancer was very high, prostate biopsies may not be needed for all men with elevated prostate-specific antigen values and nonsuspicious mpMRI. PATIENT SUMMARY We present our technique to sample (biopsy) the prostate by the transperineal route (the area between the scrotum and the anus) to detect prostate cancer using a fusion of magnetic resonance and ultrasound images to guide the sampling.
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Affiliation(s)
- Nienke Hansen
- CamPARI Clinic, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK; Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Aachen, Germany
| | - Giulio Patruno
- Department of Urology, University of Rome "Tor Vergata", Rome, Italy
| | - Karan Wadhwa
- Department of Urology, Addenbrooke's Hospital, Cambridge, UK
| | - Gabriele Gaziev
- Department of Urology, University of Rome "Tor Vergata", Rome, Italy
| | - Roberto Miano
- Department of Urology, University of Rome "Tor Vergata", Rome, Italy
| | - Tristan Barrett
- CamPARI Clinic, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK; Department of Radiology, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK
| | - Vincent Gnanapragasam
- CamPARI Clinic, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK; Department of Urology, Addenbrooke's Hospital, Cambridge, UK
| | - Andrew Doble
- CamPARI Clinic, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK; Department of Urology, Addenbrooke's Hospital, Cambridge, UK
| | - Anne Warren
- CamPARI Clinic, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK; Department of Histopathology, Addenbrooke's Hospital, Cambridge, UK
| | - Ola Bratt
- CamPARI Clinic, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK; Department of Urology, Addenbrooke's Hospital, Cambridge, UK
| | - Christof Kastner
- CamPARI Clinic, Addenbrooke's Hospital and University of Cambridge, Cambridge, UK; Department of Urology, Addenbrooke's Hospital, Cambridge, UK.
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14
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Haldrup C, Lynnerup AS, Storebjerg TM, Vang S, Wild P, Visakorpi T, Arsov C, Schulz WA, Lindberg J, Grönberg H, Egevad L, Borre M, Ørntoft TF, Høyer S, Sørensen KD. Large-scale evaluation of SLC18A2 in prostate cancer reveals diagnostic and prognostic biomarker potential at three molecular levels. Mol Oncol 2016; 10:825-37. [PMID: 26905753 DOI: 10.1016/j.molonc.2016.02.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/23/2015] [Accepted: 02/01/2016] [Indexed: 12/18/2022] Open
Abstract
Limitations of current diagnostic and prognostic tools for prostate cancer (PC) have led to over-diagnosis and over-treatment. Here, we investigate the biomarker potential of the SLC18A2 (VMAT2) gene for PC at three molecular levels. Thus, SLC18A2 promoter methylation was analyzed in 767 malignant and 78 benign radical prostatectomy (RP) samples using methylation-specific qPCR and Illumina 450K methylation microarray data. SLC18A2 transcript levels were assessed in 412 malignant and 45 benign RP samples using RNAseq data. SLC18A2 protein was evaluated by immunohistochemistry in 502 malignant and 305 benign RP samples. Cancer-specificity of molecular changes was tested using Mann-Whitney U tests and/or receiver operating characteristic (ROC) analyses. Log rank, uni- and multivariate Cox regression tests were used for survival analyses. We found that SLC18A2 promoter hypermethylation was highly cancer-specific (area under the curve (AUC): 0.923-0.976) and associated with biochemical recurrence (BCR) after RP in univariate analyses. SLC18A2 transcript levels were reduced in PC and had independent prognostic value for BCR after RP (multivariate HR 0.13, P < 0.05). Likewise, SLC18A2 protein was down-regulated in PC (AUC 0.898) and had independent prognostic value for BCR (multivariate HR 0.51, P < 0.05). Reduced SLC18A2 protein expression was also associated with poor overall survival in univariate analysis (HR 0.29, P < 0.05). Our results highlight SLC18A2 as a new promising methylation marker candidate for PC diagnosis. Furthermore, SLC18A2 expression (RNA and protein) showed promising prognostic potential beyond routine clinicopathological variables. Thus, novel SLC18A2-based molecular tests could have useful future applications for PC detection and identification of high-risk patients.
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Affiliation(s)
- Christa Haldrup
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Anne-Sofie Lynnerup
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Tine Maj Storebjerg
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Søren Vang
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Peter Wild
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Tapio Visakorpi
- Prostate Cancer Research Center, Institute of Biosciences and Medical Technology (BioMediTech), University of Tampere, and Fimlab Laboratories, Tampere University Hospital, Tampere, Finland
| | - Christian Arsov
- Department of Urology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Wolfgang A Schulz
- Department of Urology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Johan Lindberg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - Henrik Grönberg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - Lars Egevad
- Department of Oncolocy and Pathology, Karolinska Institute, Stockholm, Sweden
| | - Michael Borre
- Department of Urology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Søren Høyer
- Institute of Pathology, Aarhus University Hospital, Aarhus, Denmark
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15
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Abstract
Autopsy studies have confirmed the high prevalence of latent prostate cancer; however, only a certain portion of patients require definite treatment. Active surveillance is one of the treatment options which, according to national and international guidelines, should be offered to patients with newly diagnosed low-risk prostate cancer. Prostate cancer-specific survival is high in these patients; therefore, curative treatment, such as radical prostatectomy, external beam radiotherapy and brachytherapy may be initially deferred in order to avoid therapy-related side effects. In order to qualify for active surveillance, strict inclusion criteria have to be met; nevertheless, the reliable identification of low-risk prostate cancer patients is not always possible. Patients under active surveillance are followed up regularly with prostate-specific antigen (PSA) testing, digital rectal examination (DRE) and repeat prostate biopsies. Due to the heterogeneity of primary prostate tumors precise molecular diagnostic techniques could allow individualized treatment strategies in the future.
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Affiliation(s)
- Annika Herlemann
- Urologische Klinik und Poliklinik, Ludwig-Maximilians-Universität München, Campus Großhadern, Marchioninistraße 15, 81377, München, Deutschland.
| | - Christian G Stief
- Urologische Klinik und Poliklinik, Ludwig-Maximilians-Universität München, Campus Großhadern, Marchioninistraße 15, 81377, München, Deutschland
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16
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D'Amico AV. Personalizing the Use of Active Surveillance As an Initial Approach for Men With Newly Diagnosed Prostate Cancer. J Clin Oncol 2015; 33:3365-6. [DOI: 10.1200/jco.2015.63.6118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Anthony V. D'Amico
- Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, MA
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17
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Clinical Case Discussion: Intermediate-risk Prostate Cancer: The Case for Active Surveillance. Eur Urol Focus 2015; 1:208-209. [PMID: 28723436 DOI: 10.1016/j.euf.2015.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 07/01/2015] [Indexed: 11/24/2022]
Abstract
Active surveillance offers men the opportunity to defer immediate local treatment of low risk prostate cancer while preserving a highly functional quality of life. Novel biomarkers and imaging technology will enable physicians to better identify ideal candidates for this approach beyond traditional clinical characteristics.
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