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Fenton SE, VanderWeeler DJ, Rebbeck TR, Chen DL. Advancing Prostate Cancer Care: Treatment Approaches to Precision Medicine, Biomarker Innovations, and Equitable Access. Am Soc Clin Oncol Educ Book 2024; 44:e433138. [PMID: 38781539 DOI: 10.1200/edbk_433138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Genetic testing and molecular imaging have great promise in the accurate diagnosis and treatment of #prostate #cancer, but only if they can be developed and implemented to achieve equitable benefit for all men.
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Affiliation(s)
- Sarah E Fenton
- Northwestern University Feinberg School of Medicine and Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
| | - David J VanderWeeler
- Northwestern University Feinberg School of Medicine and Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
| | - Timothy R Rebbeck
- Dana-Farber Cancer Institute and Harvard TH Chan School of Public Health, Boston, MA
| | - Delphine L Chen
- University of Washington and Fred Hutchinson Cancer Center, Seattle, WA
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2
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Muthusamy S, Smith SC. Contemporary Diagnostic Reporting for Prostatic Adenocarcinoma: Morphologic Aspects, Molecular Correlates, and Management Perspectives. Adv Anat Pathol 2024; 31:188-201. [PMID: 38525660 DOI: 10.1097/pap.0000000000000444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
The diagnosis and reporting of prostatic adenocarcinoma have evolved from the classic framework promulgated by Dr Donald Gleason in the 1960s into a complex and nuanced system of grading and reporting that nonetheless retains the essence of his remarkable observations. The criteria for the "Gleason patterns" originally proposed have been continually refined by consensuses in the field, and Gleason scores have been stratified into a patient-friendly set of prognostically validated and widely adopted Grade Groups. One product of this successful grading approach has been the opportunity for pathologists to report diagnoses that signal carefully personalized management, placing the surgical pathologist's interpretation at the center of patient care. At one end of the continuum of disease aggressiveness, personalized diagnostic care means to sub-stratify patients with more indolent disease for active surveillance, while at the other end of the continuum, reporting histologic markers signaling aggression allows sub-stratification of clinically significant disease. Whether contemporary reporting parameters represent deeper nuances of more established ones (eg, new criteria and/or quantitation of Gleason patterns 4 and 5) or represent additional features reported alongside grade (intraductal carcinoma, cribriform patterns of carcinoma), assessment and grading have become more complex and demanding. Herein, we explore these newer reporting parameters, highlighting the state of knowledge regarding morphologic, molecular, and management aspects. Emphasis is made on the increasing value and stakes of histopathologists' interpretations and reporting into current clinical risk stratification and treatment guidelines.
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Affiliation(s)
| | - Steven Christopher Smith
- Department of Pathology, VCU School of Medicine, Richmond, VA
- Department of Surgery, Division of Urology, VCU School of Medicine, Richmond, VA
- Richmond Veterans Affairs Medical Center, Richmond, VA
- Massey Comprehensive Cancer Center, VCU Health, Richmond, VA
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3
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Acosta AM. Primary mismatch repair-deficient prostate cancer can be identified prospectively in prostate biopsies and radical prostatectomies. Virchows Arch 2024; 484:869-871. [PMID: 38528213 DOI: 10.1007/s00428-024-03789-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/29/2024] [Accepted: 03/15/2024] [Indexed: 03/27/2024]
Affiliation(s)
- Andres M Acosta
- Department of Pathology, Indiana University, 350 W 11 St, Room 4080, Indianapolis, IN, 46202, USA.
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4
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Hu Q, Rizvi AA, Schau G, Ingale K, Muller Y, Baits R, Pretzer S, BenTaieb A, Gordhamer A, Nussenzveig R, Cole A, Leavitt MO, Jones RD, Joshi RP, Beaubier N, Stumpe MC, Nagpal K. Development and validation of a deep learning-based microsatellite instability predictor from prostate cancer whole-slide images. NPJ Precis Oncol 2024; 8:88. [PMID: 38594360 PMCID: PMC11004110 DOI: 10.1038/s41698-024-00560-7] [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: 10/11/2023] [Accepted: 02/22/2024] [Indexed: 04/11/2024] Open
Abstract
Microsatellite instability-high (MSI-H) is a tumor-agnostic biomarker for immune checkpoint inhibitor therapy. However, MSI status is not routinely tested in prostate cancer, in part due to low prevalence and assay cost. As such, prediction of MSI status from hematoxylin and eosin (H&E) stained whole-slide images (WSIs) could identify prostate cancer patients most likely to benefit from confirmatory testing to evaluate their eligibility for immunotherapy and need for Lynch syndrome testing. Prostate biopsies and surgical resections from prostate cancer patients referred to our institution were analyzed. MSI status was determined by next-generation sequencing. Patients sequenced before a cutoff date formed an algorithm development set (n = 4015, MSI-H 1.8%) and a paired validation set (n = 173, MSI-H 19.7%) that consisted of two serial sections from each sample, one stained and scanned internally and the other at an external site. Patients sequenced after the cutoff date formed a temporally independent validation set (n = 1350, MSI-H 2.3%). Attention-based multiple instance learning models were trained to predict MSI-H from H&E WSIs. The predictor achieved area under the receiver operating characteristic curve values of 0.78 (95% CI [0.69-0.86]), 0.72 (95% CI [0.63-0.81]), and 0.72 (95% CI [0.62-0.82]) on the internally prepared, externally prepared, and temporal validation sets, respectively, showing effective predictability and generalization to both external staining/scanning processes and temporally independent samples. While MSI-H status is significantly correlated with Gleason score, the model remained predictive within each Gleason score subgroup.
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Affiliation(s)
- Qiyuan Hu
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Abbas A Rizvi
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Geoffery Schau
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Kshitij Ingale
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Yoni Muller
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Rachel Baits
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Sebastian Pretzer
- Work done while at Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Aïcha BenTaieb
- Work done while at Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Abigail Gordhamer
- PathNet, Inc, 5100 Talley Rd Suite 300, Little Rock, AR, 72204, USA
- DDx Foundation, 2889 W Ashton Blvd. Suite 300, Lehi, UT, 84043, USA
| | - Roberto Nussenzveig
- PathNet, Inc, 5100 Talley Rd Suite 300, Little Rock, AR, 72204, USA
- DDx Foundation, 2889 W Ashton Blvd. Suite 300, Lehi, UT, 84043, USA
| | - Adam Cole
- PathNet, Inc, 5100 Talley Rd Suite 300, Little Rock, AR, 72204, USA
- DDx Foundation, 2889 W Ashton Blvd. Suite 300, Lehi, UT, 84043, USA
| | - Matthew O Leavitt
- PathNet, Inc, 5100 Talley Rd Suite 300, Little Rock, AR, 72204, USA
- DDx Foundation, 2889 W Ashton Blvd. Suite 300, Lehi, UT, 84043, USA
- Lumea, 2889 Ashton Blvd #300, Lehi, UT, 84043, USA
| | - Ryan D Jones
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Rohan P Joshi
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Nike Beaubier
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Martin C Stumpe
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA
| | - Kunal Nagpal
- Tempus AI, Inc, 600 W Chicago Ave #510, Chicago, IL, 60654, USA.
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Boiarsky D, Gulhan DC, Savignano H, Lakshminarayanan G, McClure HM, Silver R, Hirsch MS, Sholl LM, Choudhury AD, Ananda G, Park PJ, Tewari AK, Berchuck JE. A Panel-Based Mutational Signature of Mismatch Repair Deficiency is Associated With Durable Response to Pembrolizumab in Metastatic Castration-Resistant Prostate Cancer. Clin Genitourin Cancer 2024; 22:558-568.e3. [PMID: 38342659 PMCID: PMC10939759 DOI: 10.1016/j.clgc.2024.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/14/2024] [Accepted: 01/15/2024] [Indexed: 02/13/2024]
Abstract
INTRODUCTION/BACKGROUND Immune checkpoint inhibitors (ICIs) have limited efficacy in prostate cancer (PCa). Better biomarkers are needed to predict responses to ICIs. We sought to demonstrate that a panel-based mutational signature identifies mismatch repair (MMR) deficient (MMRd) PCa and is a biomarker of response to pembrolizumab. PATIENTS AND METHODS Clinico-genomic data was obtained for 2664 patients with PCa sequenced at Dana-Farber Cancer Institute (DFCI) and Memorial Sloan Kettering (MSK). Clinical outcomes were collected for patients with metastatic castration-resistant PCa (mCRPC) treated with pembrolizumab at DFCI. SigMA was used to characterize tumors as MMRd or MMR proficient (MMRp). The concordance between MMRd with microsatellite instability (MSI-H) was assessed. Radiographic progression-free survival (rPFS) and overall survival (OS) were collected for patients treated with pembrolizumab. Event-time distributions were estimated using Kaplan-Meier methodology. RESULTS Across both cohorts, 100% (DFCI: 12/12; MSK: 43/43) of MSI-H tumors were MMRd. However, 14% (2/14) and 9.1% (6/66) of MMRd tumors in the DFCI and MSK cohorts respectively were microsatellite stable (MSS), and 26% (17/66) were MSI-indeterminate in the MSK cohort. Among patients treated with pembrolizumab, those with MMRd (n = 5) versus MMRp (n = 14) mCRPC experienced markedly improved rPFS (HR = 0.088, 95% CI: 0.011-0.70; P = .0064) and OS (HR = 0.11, 95% CI: 0.014-0.80; P = .010) from start of treatment. Four patients with MMRd experienced remissions of >= 2.5 years. CONCLUSION SigMA detects additional cases of MMRd as compared to MSI testing in PCa and identifies patients likely to experience durable response to pembrolizumab.
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Affiliation(s)
| | - Doga C Gulhan
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA
| | - Hunter Savignano
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | | | - Heather M McClure
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Rebecca Silver
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | | | - Lynette M Sholl
- Department of Pathology, Brigham and Women's Hospital, Boston, MA
| | - Atish D Choudhury
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Guruprasad Ananda
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA
| | - Peter J Park
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA
| | - Alok K Tewari
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Jacob E Berchuck
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA.
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Patil A, Erickson LA, Gupta S. Sporadic Prostate Cancer in a Patient With Lynch Syndrome. Mayo Clin Proc 2024; 99:344-345. [PMID: 38309942 DOI: 10.1016/j.mayocp.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 02/05/2024]
Affiliation(s)
- Ameya Patil
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Lori A Erickson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Sounak Gupta
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
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Cussenot O, Cancel-Tassin G, Rao SR, Woodcock DJ, Lamb AD, Mills IG, Hamdy FC. Aligning germline and somatic mutations in prostate cancer. Are genetics changing practice? BJU Int 2023; 132:472-484. [PMID: 37410655 DOI: 10.1111/bju.16120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
OBJECTIVE To review the current status of germline and somatic (tumour) genetic testing for prostate cancer (PCa), and its relevance for clinical practice. METHODS A narrative synthesis of various molecular profiles related to their clinical context was carried out. Current guidelines for genetic testing and its feasibility in clinical practice were analysed. We report the main identified genetic sequencing results or functional genomic scores for PCa published in the literature or obtained from the French PROGENE study. RESULTS The molecular alterations observed in PCa are mostly linked to disruption of the androgen receptor (AR) pathway or DNA repair deficiency. The main known germline mutations affect the BReast CAncer gene 2 (BRCA2) and homeobox B13 (HOXB13) genes, whereas AR and tumour protein p53 (TP53) are the genes with most frequent somatic alterations in tumours from men with metastatic PCa. Molecular tests are now available for detecting some of these germline or somatic alterations and sometimes recommended by guidelines, but their utilisation must combine rationality and feasibility. They can guide specific therapies, notably for the management of metastatic disease. Indeed, following androgen deprivation, targeted therapies for PCa currently include poly-(ADP-ribose)-polymerase (PARP) inhibitors, immune checkpoint inhibitors, and prostate-specific membrane antigen (PSMA)-guided radiotherapy. The genetic tests currently approved for targeted therapies remain limited to the detection of BRCA1 and BRCA2 mutation and DNA mismatch repair deficiency, while large panels are recommended for germline analyses, not only for inherited cancer predisposing syndrome, but also for metastatic PCa. CONCLUSIONS Further consensus aligning germline with somatic molecular analysis in metastatic PCa is required, including genomics scars, emergent immunohistochemistry, or functional pre-screen imaging. With rapid advances in knowledge and technology in the field, continuous updating of guidelines to help the clinical management of these individuals, and well-conducted studies to evaluate the benefits of genetic testing are needed.
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Affiliation(s)
- Olivier Cussenot
- Centre de Recherche sur les Pathologies Prostatiques et Urologiques (CeRePP), Paris, France
- GRC 5 Predictive Onco-Urology, Sorbonne University, Paris, France
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Geraldine Cancel-Tassin
- Centre de Recherche sur les Pathologies Prostatiques et Urologiques (CeRePP), Paris, France
- GRC 5 Predictive Onco-Urology, Sorbonne University, Paris, France
| | - Srinivasa R Rao
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Dan J Woodcock
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Alastair D Lamb
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Ian G Mills
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Freddie C Hamdy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
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Zhang H, Yang X, Xie J, Cheng X, Chen J, Shen M, Ding W, Wang S, Zhang Z, Wang C, Zhao M. Clinicopathological and molecular analysis of microsatellite instability in prostate cancer: a multi-institutional study in China. Front Oncol 2023; 13:1277233. [PMID: 37901334 PMCID: PMC10613026 DOI: 10.3389/fonc.2023.1277233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023] Open
Abstract
Background Microsatellite instability (MSI), or mismatch repair-deficiency (dMMR), is rare in prostate cancers (PCas). The histological and molecular features of PCas with MSI/dMMR are incompletely described. Thus, we sought to identify the characteristics of PCas with MSI/dMMR. Methods and results We analyzed 1,141 primary treatment-naive PCas by MMR-related protein immunohistochemistry (MLH1, PMS2, MSH2, and MSH6). We identified eight cases exhibiting MSI/dMMR (0.7%, 8/1141). Of these, six tumors had both MSH2 and MSH6 protein loss, one had both MLH1 and PMS2 protein loss, and one had only MSH6 loss. Histologically, MSI/dMMR-PCas frequently demonstrated high histological grade (Grade Group 4 or 5), ductal/intraductal histology (6/8 cases), pleomorphic giant-cell features (4/8 cases), and conspicuous tumor lymphocytic infiltration (8/8 cases). Polymerase chain reaction-based analysis of seven MSI/dMMR tumors revealed two MSI-H tumors with loss of both MSH2 and MSH6 proteins. Subsequently, the seven cases underwent next-generation sequencing (NGS) analysis with a highly validated targeted panel; four were MSI. All cases had a high tumor mutation burden (median: 45.3 mutations/Mb). Overall, the MSI/dMMR-PCas showed a high frequency of DNA damage-repair pathway gene changes, including five with pathogenic somatic or germline MMR gene mutations. Activating mutations in the MAPK pathway, PI3K pathway, and WNT/β-catenin pathway were common. TMPRSS2::ERG rearrangement was identified in one case (1/7, 14.3%). Conclusions Several pathological features are associated with MSI/dMMR in PCas. Identification of these features may help to select patients for genetic screening. As MSI/dMMR-PCas are enriched for actionable mutations, patients should be offered NGS to guide standard-of-care treatment.
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Affiliation(s)
- Huizhi Zhang
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Xiaoqun Yang
- Department of Pathology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jialing Xie
- Department of Pathology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiao Cheng
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Jiayi Chen
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Miaomiao Shen
- Department of Pathology, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Wenyi Ding
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Suying Wang
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Zhe Zhang
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Chaofu Wang
- Department of Pathology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ming Zhao
- Department of Pathology, Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
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Fang B, Wei Y, Pan J, Zhang T, Ye D, Zhu Y. The Somatic Mutational Landscape of Mismatch Repair Deficient Prostate Cancer. J Clin Med 2023; 12:jcm12020623. [PMID: 36675550 PMCID: PMC9864094 DOI: 10.3390/jcm12020623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Prostate cancers with mismatch repair deficiency (MMR-d) have aggressive clinical and histological features, and they are potentially responsive to immunotherapy. However, its rarity prevents the analysis of the underlying biology. Here, we collected the genomic data of 2664 primary prostate tumors and 1409 metastatic prostate tumors from the GENIE and TCGA databases. A total of 69 (2.59%) primary and 60 (4.26%) metastatic MMR-d tumors were identified among these tumors. Single nucleotide variant (SNV) frequencies of 34 candidate genes (including KMT2D (46.4%), ZFHX3 (33.3%), JAK1 (31.9%), and RNF43 (27.5%)) and 16 candidate genes (including KMT2D (33.3%) and JAK1 (28.3%)) were higher in MMR-d primary tumors and MMR-d metastatic tumors, respectively. The tumor mutation burden (TMB) was higher in primary MMR-d tumors. Homozygous deletions of EPCAM and EPAS1 were enriched in MMR-d primary tumors, while EPCAM deletions were enriched in metastatic MMR-d tumors. For genomic rearrangement events, TMPRSS2-ETS fusions were less frequent in primary MMR-d tumors. Our study indicates MMR-d prostate cancers have unique genomic features. These may play an important role in providing therapeutic targets for the treatment of this subset of prostate cancer patients.
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Affiliation(s)
- Bangwei Fang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yu Wei
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Jian Pan
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Tingwei Zhang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Correspondence: (D.Y.); (Y.Z.); Tel.: +86-21-64175590 (D.Y. & Y.Z.); Fax: +86-21-64434556 (D.Y. & Y.Z.)
| | - Yao Zhu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Correspondence: (D.Y.); (Y.Z.); Tel.: +86-21-64175590 (D.Y. & Y.Z.); Fax: +86-21-64434556 (D.Y. & Y.Z.)
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