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Acosta AM, Sholl LM, Marino-Enriquez A, Dal Cin P, Dickson BC, Gordetsky JB, Pins MR, McKenney JK, Fletcher CD. In Response to "Reexamining the molecular findings in specialized stromal tumors of the prostate". Mod Pathol 2021; 34:2082-2083. [PMID: 34497361 DOI: 10.1038/s41379-021-00916-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 11/09/2022]
Affiliation(s)
- Andres M Acosta
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
| | - Lynette M Sholl
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Center for Advanced Molecular Diagnostics, Brigham and Women's, Boston, MA, USA
| | - Adrian Marino-Enriquez
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Center for Advanced Molecular Diagnostics, Brigham and Women's, Boston, MA, USA
| | - Paola Dal Cin
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Center for Advanced Molecular Diagnostics, Brigham and Women's, Boston, MA, USA.,Cytogenetics Laboratory, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Brendan C Dickson
- Department of Pathology, Mount Sinai Hospital and University of Toronto, Toronto, ON, Canada
| | - Jennifer B Gordetsky
- Department of Pathology and Microbiology, Vanderbilt University, Nashville, TN, USA
| | - Michael R Pins
- Department of Pathology, Advocate Lutheran General Hospital, Park Ridge, IL, USA
| | - Jesse K McKenney
- Robert J. Tomsich Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Christopher D Fletcher
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
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Reexamining the molecular findings in specialized stromal tumors of the prostate. Mod Pathol 2021; 34:2080-2081. [PMID: 34365460 DOI: 10.1038/s41379-021-00856-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 06/02/2021] [Indexed: 11/08/2022]
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Re-evaluating tumors of purported specialized prostatic stromal origin reveals molecular heterogeneity, including non-recurring gene fusions characteristic of uterine and soft tissue sarcoma subtypes. Mod Pathol 2021; 34:1763-1779. [PMID: 33986460 DOI: 10.1038/s41379-021-00818-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 12/14/2022]
Abstract
Tumors of purported specialized prostatic stromal origin comprise prostatic stromal sarcomas (PSS) and stromal tumors of uncertain malignant potential (STUMP). Prior studies have described their clinicopathologic characteristics, but the molecular features remain incompletely understood. Moreover, these neoplasms are morphologically heterogeneous and the lack of specific adjunctive markers of prostatic stromal lineage make precise definition more difficult, leading some to question whether they represent a specific tumor type. In this study, we used next-generation DNA and RNA sequencing to profile 25 primary prostatic mesenchymal neoplasms of possible specialized prostatic stromal origin, including cases originally diagnosed as PSS (11) and STUMP (14). Morphologically, the series comprised 20 cases with solid architecture (11 PSS and 9 STUMP) and 5 cases with phyllodes-like growth pattern (all STUMP). Combined DNA and RNA sequencing results demonstrated that 19/22 (86%) cases that underwent successful sequencing (either DNA or RNA) harbored pathogenic somatic variants. Except for TP53 alterations (6 cases), ATRX mutations (2 cases), and a few copy number variants (-13q, -14q, -16q and +8/8p), the findings were largely nonrecurrent. Eight gene rearrangements were found, and 4 (NAB2-STAT6, JAZF1-SUZ12, TPM3-NTRK1 and BCOR-MAML3) were useful for reclassification of the cases as specific entities. The present study shows that mesenchymal neoplasms of the prostate are morphologically and molecularly heterogeneous and include neoplasms that harbor genetic aberrations seen in specific mesenchymal tumors arising in other anatomic sites, including soft tissue and the uterus. These data suggest that tumors of purported specialized prostatic stromal origin may perhaps not represent a single diagnostic entity or specific disease group and that alternative diagnoses should be carefully considered.
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