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Fusion prostate

Geoffrey A Sonn, Richard E Fan, Pejman Ghanouni, Nancy N Wang, James D Brooks, Andreas M Loening, Bruce L Daniel, Katherine J To'o, Alan E Thong, John T Leppert
BACKGROUND: Multiparametric magnetic resonance imaging (mpMRI) interpreted by experts is a powerful tool for diagnosing prostate cancer. However, the generalizability of published results across radiologists of varying expertise has not been verified. OBJECTIVE: To assess variability in mpMRI reporting and diagnostic accuracy across radiologists of varying experience in routine clinical care. DESIGN, SETTING, AND PARTICIPANTS: Men who underwent mpMRI and MR-fusion biopsy between 2014-2016...
December 6, 2017: European Urology Focus
Xintong Chen, Sander Houten, Kimaada Allette, Robert P Sebra, Gustavo Stolovitzky, Bojan Losic
We characterize the transcriptional splicing landscape of a prostate cancer cell line treated with a previously identified synergistic drug combination. We use a combination of third generation long-read RNA sequencing technology and short-read RNAseq to create a high-fidelity map of expressed isoforms and fusions to quantify splicing events triggered by treatment. We find strong evidence for drug-induced, coherent splicing changes which disrupt the function of oncogenic proteins, and detect novel transcripts arising from previously unreported fusion events...
2018: Pacific Symposium on Biocomputing
J Mischinger, S Kaufmann, G I Russo, N Harland, S Rausch, B Amend, M Scharpf, L Loewe, T Todenhoefer, M Notohamiprodjo, K Nikolaou, A Stenzl, J Bedke, S Kruck
OBJECTIVES: To evaluate the performance of transperineal robot-assisted (RA) targeted (TB) and systematic (SB) prostate biopsy in the primary and repeat biopsy setting. PATIENTS AND METHODS: Patients were admitted to RA biopsy between 2014-2016. Prior to RA-TB, multiparametric (mp) Magnetic Resonance Imaging (MRI) was performed. Prostate lesions were scored (Prostate Imaging, Reporting and Data System Version 2) and used for RA-TB planning. In addition, RA-SB was performed...
December 6, 2017: BJU International
Louise Stone
No abstract text is available yet for this article.
December 5, 2017: Nature Reviews. Urology
Miguel A Bergero, Pablo F Martínez, Jan P Radtke, Boris A Hadaschik
OBJECTIVE: Technical improvements in prostate magnetic resonance imaging (MRI) have resulted in the use of MRI to target prostate biopsy. This allowed urologists to progress from blind biopsies to target biopsies with a better performance in prostate cancer (PC) diagnosis. We herein review the current status of Magnetic Resonance Imaging Guided Biopsy (MRGB) for the detection of PC. METHODS: A systematic review of the literature was conducted using PubMed, Embase and Cochrane using the search criteria: "PC and MRI/US fusion" or "PC and guided biopsy" or "PC and multiparametric MRI" or "PC and MRI guided prostate biopsy"...
December 2017: Archivos Españoles de Urología
S Albisinni, F Aoun, A Noel, E El Rassy, M Lemort, M Paesmans, R van Velthoven, T Roumeguère, A Peltier
INTRODUCTION AND OBJECTIVES: MRI-guided targeted biopsies are advised in patients who have undergone an initial series of negative systematic biopsies, in whom prostate cancer (PCa) suspicion remains elevated. The aim of the study was to evaluate whether, in men with prior negative prostate biopsies, systematic cores are also warranted at the time of an MRI-targeted repeat biopsy. MATERIAL AND METHODS: We enrolled patients with prior negative biopsy undergoing real time MRI/TRUS fusion guided prostate biopsy at our institute between 2014 and 2016...
December 1, 2017: Progrès en Urologie
Jonathan Shoag, Deli Liu, Mirjam Blattner, Andrea Sboner, Kyung Park, Lesa Deonarine, Brian D Robinson, Juan Miguel Mosquera, Yu Chen, Mark A Rubin, Christopher E Barbieri
Nearly 50% of prostate cancers harbor gene fusions that lead to overexpression of the transcription factor ERG, while a mutually exclusive 10% of prostate cancers harbor recurrent mutations in the gene encoding the E3 ubiquitin ligase SPOP. Recent reports suggest that SPOP acts as a ubiquitin ligase for ERG and propose that ERG stabilization is the oncogenic effector of SPOP mutation. Here, we used human prostate cancer samples and showed that the vast majority of human SPOP-mutant cancers do not express ERG...
December 4, 2017: Journal of Clinical Investigation
Prasad R Shankar, Nicole E Curci, Matthew S Davenport
PURPOSE: To determine whether peripheral zone PI-RADS 4 observations can be further risk-stratified. METHODS: This was an IRB-approved HIPAA-compliant retrospective diagnostic accuracy study. Peripheral zone PI-RADS 4 observations prospectively identified at the study institution from 8/1/2015 to 12/31/2016 (n = 170 in 149 mpMRIs) were reviewed independently by two blinded genitourinary radiologists on the basis of (a) PI-RADS v2 shape, (b) pattern of peripheral zone sparing, and (c) rationale for PI-RADS 4 designation...
December 2, 2017: Abdominal Radiology
Nicolae Crisan, Iulia Andras, Corina Radu, David Andras, Radu-Tudor Coman, Paul Tucan, Doina Pisla, Dana Crisan, Ioan Coman
The use of grey scale prostate ultrasound decreased after the implementation of magnetic resonance imaging (MRI) for the diagnosis and evaluation of prostate cancer. The new developments, such as multiparametric ultrasound and MRI-ultrasound fusion technology, renewed the interest for this imaging method in the assessment of prostate cancer. The purpose of this paper was to review the current role of prostate ultrasound in the setting of these new applications. A thorough reevaluation of the selection criteria of the patients is required to assess which patients would benefit from multiparametric ultrasound, who wouldbenefit from multiparametric MRI or the combination of both to assist prostate biopsy in order to ensure the balance between overdiagnosis and underdiagnosis of prostate cancer...
November 29, 2017: Medical Ultrasonography
Osamu Tanaka, Hisao Komeda, Shigeki Hirose, Takuya Taniguchi, Kousei Ono, Masayuki Matsuo
INTRODUCTION: Visualization of fiducial gold markers is critical for registration on computed tomography (CT) and magnetic resonance imaging (MRI) for imaging-guided radiotherapy. Although larger markers provide better visualization on MRI, they tend to generate artifacts on CT. MRI is strongly influenced by the presence of metals, such as iron, in the body. Here we compared efficacies of a 0.5% iron-containing gold marker (GM) and a traditional non-iron-containing marker. METHODS: Twenty-seven patients underwent CT/MRI fusion-based intensity-modulated radiotherapy...
November 29, 2017: Asia-Pacific Journal of Clinical Oncology
Richard Hoffmann, Callum Logan, Michael O'Callaghan, Kirsten Gormly, Ken Chan, Darren Foreman
INTRODUCTION: Multiparametric MRI (mpMRI) is useful in detecting anterior prostate tumours. Due to the location of anterior tumours, they are often diagnosed with a large size and may be suspicious for extra-prostatic extension (EPE). We aim to evaluate whether PI-RADS v2 is more accurate in assessing anterior prostate lesions identified on mpMRI compared to PI-RADS v1. METHODS: Patients with anterior prostate lesions diagnosed on mpMRI who proceeded to a cognitive fusion transperineal prostate biopsy were identified...
November 29, 2017: International Urology and Nephrology
Manuela A Hoffmann, Kasra Taymoorian, Christian Ruf, Arnd Gerhards, Karlheinz Leyendecker, Thomas Stein, Frank M Jakobs, Mathias Schreckenberger
BACKGROUND/AIM: Multiparametric magnetic resonance imaging combined with ultrasound-fusion-targeted biopsy of the prostate intends to increase diagnostic precision, which has to be clarified. PATIENTS AND METHODS: We performed multiparametric magnetic resonance imaging followed by ultrasound-fusion-guided perineal biopsy in 99 male patients with elevated prostate-specific-antigen and previous negative standard biopsy-procedures. RESULTS: In 33/99 patients (33%) no malignancy could be confirmed by histopathology...
December 2017: Anticancer Research
Jian-Lei Gu, Morris Chukhman, Yao Lu, Cong Liu, Shi-Yi Liu, Hui Lu
Based on high-throughput sequencing technology, the detection of gene fusions is no longer a big challenge but estimating the oncogenic potential of fusion genes remains challenging. Recent studies successfully applied machine learning methods and gene structural and functional features of fusion mutation to predict their oncogenic potentials. However, the transcription characterizations features of fusion genes have not yet been studied. In this study, based on the clonal evolution theory, we hypothesized that a fusion gene is more likely to be an oncogenic genomic alteration, if the neoplastic cells harboring this fusion mutation have larger clonal size than other neoplastic cells in a tumor...
2017: BioMed Research International
Elsa Bey, Olivier Gaget, Jean-Luc Descotes, Quentin Franquet, Jean-Jacques Rambeaud, Jean-Alexandre Long, Gaelle Fiard
INTRODUCTION: The aim of this study was to compare the results of ultrasound-guided prostate biopsies (US-PB) and magnetic resonance imaging ultrasound fusion biopsies (MRI-PB) in two contemporary cohorts, and to describe the parameters orienting the choice of technique. METHODS: Two contemporary cohorts of patients undergoing US-PB or MR-PB using the Urostation® (Koelis, Grenoble, France) between November 2010 and July 2015 were analyzed retrospectively. Patients with metastatic cancer or recurrence after treatment, saturation biopsies, and US-PB performed after a negative MRI were excluded...
December 1, 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Thibaut Pierre, Francois Cornud, Loïc Colléter, Frédéric Beuvon, Frantz Foissac, Nicolas B Delongchamps, Paul Legmann
PURPOSE: To compare inter-reader concordance and accuracy of qualitative diffusion-weighted (DW) PIRADSv2.0 score with those of quantitative DW-MRI for the diagnosis of peripheral zone prostate cancer. MATERIALS AND METHODS: Two radiologists independently assigned a DW-MRI-PIRADS score to 92 PZ-foci, in 74 patients (64.3±5.6 years old; median PSA level: 8 ng/ml, normal DRE in 70 men). A standardised ADCmean and nine ADC-derived parameters were measured, including ADCratios with the whole-prostate (WP-ADCratio) or the mirror-PZ (mirror-ADCratio) as reference areas...
November 22, 2017: European Radiology
Rebecca E Graff, Thomas U Ahearn, Andreas Pettersson, Ericka M Ebot, Travis Gerke, Kathryn L Penney, Kathryn M Wilson, Sarah C Markt, Claire H Pernar, Amparo G Gonzalez-Feliciano, Mingyang Song, Rosina T Lis, Daniel R Schmidt, Matthew G Vander Heiden, Michelangelo Fiorentino, Edward L Giovannucci, Massimo Loda, Lorelei A Mucci
BACKGROUND: The largest molecular subtype of primary prostate cancer is defined by the TMPRSS2:ERG gene fusion. Few studies, however, have investigated etiologic differences by TMPRSS2:ERG status. Because the fusion is hormone-regulated and a man's hormonal milieu varies by height and obesity status, we hypothesized that both may be differentially associated with risk of TMPRSS2:ERG-defined disease. METHODS: Our study included 49,372 men from the prospective Health Professionals Follow-up Study...
November 22, 2017: Cancer Epidemiology, Biomarkers & Prevention
Zachary A Glaser, Jennifer B Gordetsky, Kristin K Porter, Sooryanarayana Varambally, Soroush Rais-Bahrami
Background: Active surveillance (AS) is a widely adopted strategy to monitor men with low-risk, localized prostate cancer (PCa). Current AS inclusion criteria may misclassify as many as one in four patients. The advent of multiparametric magnetic resonance imaging (mpMRI) and novel PCa biomarkers may offer improved risk stratification. We performed a review of recently published literature to characterize emerging evidence in support of these novel modalities. Methods: An English literature search was conducted on PubMed for available original investigations on localized PCa, AS, imaging, and biomarkers published within the past 3 years...
2017: Frontiers in Oncology
Jeff M P Holly, Jessica Broadhurst, Rehanna Mansor, Amit Bahl, Claire M Perks
Background: Epidemiologic evidence shows that obesity is associated with a greater risk of aggressive prostate cancer (PCa) and PCa-specific mortality and this is observed mainly in men with the TMPRSS2-ERG gene fusion. Obesity is often associated with comorbid conditions such as type 2 diabetes and hyperglycemia: we investigated whether some of the exposures associated with disturbed metabolism can also affect the frequency of this gene fusion. Methods: Fusion was induced in LNCaP PCa cells in normal or high levels of glucose, with or without insulin-like growth factor binding protein-2 (IGFBP-2) silenced or the presence of insulin-like growth factor-1 (IGF-I), insulin, or epidermal growth factor (EGF)...
2017: Frontiers in Endocrinology
Marc A Bjurlin, Andrew B Rosenkrantz, Saradwata Sarkar, Herbert Lepor, William C Huang, Richard Huang, Rajesh Venkataraman, Samir S Taneja
OBJECTIVE: To develop nomograms that predict the probability of overall PCa and clinically significant PCa (Gleason ≥7) on MRI targeted, and combined MRI-targeted and systematic, prostate biopsy. MATERIALS AND METHODS: From June 2012 to August 2014, MR-US fusion targeted prostate biopsy was performed on 464 men with suspicious regions identified on pre-biopsy 3T MRI along with systematic 12 core biopsy. Logistic regression modeling was used to evaluate predictors of overall and clinically significant PCa, and corresponding nomograms were generated for men who were not previously biopsied or had one or more prior negative biopsies...
November 16, 2017: Urology
Brian P Calio, Abhinav Sidana, Dordaneh Sugano, Sonia Gaur, Mahir Maruf, Amit L Jain, Maria J Merino, Peter L Choyke, Bradford J Wood, Peter A Pinto, Baris Turkbey
PURPOSE: To determine if 'saturation' of the index-lesion during MRI-TRUS fusion-guided (fusion) biopsy decreases rate of pathological upgrade from biopsy to radical-prostatectomy (RP). MATERIALS/METHODS: A prospectively maintained single institution database was analyzed for patients who underwent both fusion and systematic biopsy followed by RP (2010-16). Index-lesion was defined as lesion with largest diameter on T2W-MRI. Patients with saturation of the index-lesion (SIL) had transrectal fusion biopsy targets obtained at 6mm intervals along the long axis of index-lesion; patients with nonsaturation of the index-lesion (NSIL) had only one target obtained from the lesion...
November 15, 2017: Journal of Urology
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