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Wilsher MJ, Venus M, Fisher C. Giant cell-rich tumour with keratin expression and HMGA2::NCOR2 fusion presenting at a rare location, on the scalp of a 29-year-old male. Pathology 2024; 56:609-612. [PMID: 38341304 DOI: 10.1016/j.pathol.2023.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/03/2023] [Accepted: 10/18/2023] [Indexed: 02/12/2024]
Affiliation(s)
- Mark James Wilsher
- North West London Pathology Imperial College Healthcare NHS Trust, London, United Kingdom; Unilabs IHS, London, United Kingdom.
| | - Matthew Venus
- University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom
| | - Cyril Fisher
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
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2
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Rungsiprakarn P, Ryan AL, Wong DD, Luo M, Kazahaya K, Arkader A, Lau LMS, Ajuyah P, Rudzinski E, Kreiger PA, Roebuck DJ, Surrey LF, Foo TSY. Keratin-Positive Giant Cell Tumor of Bone and Soft Tissue With HMGA2::NCOR2 Fusion in Children Under 10 With Response to Imatinib Therapy: A Case Series. JCO Precis Oncol 2024; 8:e2300659. [PMID: 38935896 DOI: 10.1200/po.23.00659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 04/03/2024] [Accepted: 04/25/2024] [Indexed: 06/29/2024] Open
Abstract
HMGA2::NCOR2 keratin-positive giant cell tumors in children with response to imatinib in an infant.
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Affiliation(s)
- Phassawan Rungsiprakarn
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Anne L Ryan
- Department of Hematology, Oncology and Bone Marrow Transplant, Perth Children's Hospital, Nedlands, Australia
- Telethon Kids Insitute, University of Western Australia, Nedlands, Australia
| | - Daniel D Wong
- PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Australia
| | - Minjie Luo
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Ken Kazahaya
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Otorhinolaryngology/Head and Neck Surgery, University of Pennsylvania, Philadelphia, PA
| | - Alexandre Arkader
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Division of Orthopedic Surgery, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Loretta M S Lau
- Children's Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington, Australia
- School of Clinical Medicine, UNSW Medicine & Health, UNSW Sydney, Kensington, Australia
| | | | - Erin Rudzinski
- Department of Laboratories, Seattle Children's Hospital, Seattle, WA
- Department of Laboratory Medicine and Pathology, University of Washington Medical Center, Seattle, WA
| | - Portia A Kreiger
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Derek J Roebuck
- Department of Medical Imaging, Perth Children's Hospital, Nedlands, Australia
- Division of Pediatrics, Medical School, University of Western Australia, Crawley, Australia
| | - Lea F Surrey
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Tiffany S Y Foo
- PathWest Laboratory Medicine, Perth Children's Hospital, Nedlands, WA, Australia
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3
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Nishio J, Nakayama S, Koga K, Aoki M. Keratin-Positive Giant Cell-Rich Tumor: A Review and Update. Cancers (Basel) 2024; 16:1940. [PMID: 38792018 PMCID: PMC11120402 DOI: 10.3390/cancers16101940] [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: 04/26/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024] Open
Abstract
Keratin-positive giant cell-rich tumor (KPGCT) is an extremely rare and recently described mesenchymal neoplasm that occurs in both soft tissue and bone, frequently found in young women. It has locally recurrent potential if incompletely excised but low risk for metastasis. KPGCT is histologically similar to conventional giant cell tumors of soft tissue but shows the presence of keratin-positive mononuclear cells. Interestingly, KPGCT also shares some morphological features with xanthogranulomatous epithelial tumors. These two tumors have recently been shown to harbor an HMGA2-NCOR2 fusion, arguing in favor of a single entity. Surgery is the treatment of choice for localized KPGCT. Therapeutic options for advanced or metastatic disease are unknown. This review provides an overview of the current knowledge on the clinical presentation, pathogenesis, histopathology, and treatment of KPGCT. In addition, we will discuss the differential diagnosis of this emerging entity.
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Affiliation(s)
- Jun Nishio
- Section of Orthopaedic Surgery, Department of Medicine, Fukuoka Dental College, 2-15-1 Tamura, Sawara-ku, Fukuoka 814-0193, Japan
| | - Shizuhide Nakayama
- Department of Orthopaedic Surgery, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan;
| | - Kaori Koga
- Department of Pathology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan; (K.K.); (M.A.)
| | - Mikiko Aoki
- Department of Pathology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan; (K.K.); (M.A.)
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4
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Nishio J, Nakayama S, Koga K, Aoki M. Giant Cell Tumor of Soft Tissue: An Updated Review. J Clin Med 2024; 13:2870. [PMID: 38792412 PMCID: PMC11122090 DOI: 10.3390/jcm13102870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/16/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Giant cell tumor of soft tissue (GCTST) is a locally aggressive mesenchymal neoplasm of intermediate malignancy that predominantly occurs in the superficial soft tissue of the extremities. It is histologically similar to a giant cell tumor of bone (GCTB) and shows a mixture of round to oval mononuclear cells and osteoclast-like multinucleated giant cells. Currently, immunohistochemistry plays a very limited role in the diagnosis of GCTST. Primary or secondary malignant GCTST has recently been described and tumors exhibiting high-grade histological features demonstrate higher rates of distant metastasis. GCTST lacks the H3-3A gene mutations that are identified in the vast majority of GCTBs, suggesting a different pathogenesis. Surgery is the standard treatment for localized GCTST. Incomplete surgical resection is usually followed by local recurrence. Radiation therapy may be considered when the close proximity of critical structures prevents microscopically negative surgical margins. The systemic treatment options for advanced or metastatic disease are very limited. This review provides an updated overview of the clinicoradiological features, pathogenesis, histopathology, and treatment for GCTST. In addition, we will discuss the differential diagnosis of this peculiar neoplasm.
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Affiliation(s)
- Jun Nishio
- Section of Orthopaedic Surgery, Department of Medicine, Fukuoka Dental College, 2-15-1 Tamura, Sawara-ku, Fukuoka 814-0193, Japan
| | - Shizuhide Nakayama
- Department of Orthopaedic Surgery, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan;
| | - Kaori Koga
- Department of Pathology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan; (K.K.); (M.A.)
| | - Mikiko Aoki
- Department of Pathology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan; (K.K.); (M.A.)
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5
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Reith JD. Histones and their practical application in bone tumors: Do I always need them? Hum Pathol 2024; 147:92-100. [PMID: 38307341 DOI: 10.1016/j.humpath.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/04/2024]
Abstract
Historically, the diagnosis of giant cell-rich neoplasms arising in bone has been challenging owing to overlapping clinical and radiographic findings resulting in the difficult separation of several neoplasms, particularly when biopsy material is limited. However, with the discovery of the driver histone mutations in giant cell tumor of bone (GCTB) and chondroblastoma, as well as USP6 rearrangements in aneurysmal bone cyst, pathologists now have objective ancillary tools to aid in the separation of several histologically similar giant cell-rich neoplasms. Furthermore, the recognition of histone mutations has allowed pathologists to revisit several entities, such as "malignant chondroblastoma," and furthered our understanding of phenomena such as "aneurysmal bone cyst-like change," formerly recognized as "secondary aneurysmal bone cyst." Herein, the evolution of testing for histone mutations in bone tumors is considered; the sensitivity and specificity of the histone antibodies is reviewed; and a practical guide for the use of these ancillary tests is offered.
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Affiliation(s)
- John D Reith
- Department of Pathology, L25, Cleveland Clinic, 9500 Euclid Ave, Cleveland, OH, 44195, USA.
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6
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Patton A, Ilaslan H, Armstrong SM, Bakhshwin A, Cheng YW, Minhas F, Fritchie KJ. Keratin-Positive Giant Cell-Rich Tumor of Bone Harboring an HMGA2::NCOR2 Fusion: Two Cases, Including a Patient With Metastatic Disease, and Review of the Literature. Int J Surg Pathol 2024; 32:556-564. [PMID: 37461232 DOI: 10.1177/10668969231185076] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Giant cell-rich lesions of bone represent a heterogeneous group of entities which classically include giant cell tumor of bone, aneurysmal bone cyst, nonossifying fibroma, and Brown tumor of hyperparathyroidism. A recently described subset of giant cell-rich tumors involving bone and soft tissue has been characterized by recurrent HMGA2::NCOR2 fusions and keratin expression. The overlapping clinical, radiographic, and morphological features of these giant cell-rich lesions provide a unique diagnostic challenge, particularly on biopsy. We present 2 additional cases of keratin-positive giant cell-rich tumor of bone with HMGA2::NCOR2 fusions, including 1 patient who developed metastatic disease.
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Affiliation(s)
- Ashley Patton
- Department of Pathology & Laboratory Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Hakan Ilaslan
- Department of Musculoskeletal Radiology, Cleveland Clinic, Cleveland, OH, USA
| | - Susan M Armstrong
- Department of Anatomic Pathology, Cleveland Clinic, Cleveland, OH, USA
| | - Ahmed Bakhshwin
- Department of Anatomic Pathology, Cleveland Clinic, Cleveland, OH, USA
| | - Yu-Wei Cheng
- Department of Anatomic Pathology, Cleveland Clinic, Cleveland, OH, USA
| | - Farooq Minhas
- Department of Pathology, Ascension Providence Hospital, Southfield, MI, USA
| | - Karen J Fritchie
- Department of Anatomic Pathology, Cleveland Clinic, Cleveland, OH, USA
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Panagopoulos I, Andersen K, Stavseth V, Torkildsen S, Heim S, Tandsæther MR. Germline MYOF1::WNK4 and VPS25::MYOF1 Chimeras Generated by the Constitutional Translocation t(17;19)(q21;p13) in Two Siblings With Myelodysplastic Syndrome. Cancer Genomics Proteomics 2024; 21:272-284. [PMID: 38670586 PMCID: PMC11059592 DOI: 10.21873/cgp.20446] [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: 02/08/2024] [Revised: 03/17/2024] [Accepted: 03/20/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND/AIM Constitutional chromosomal aberrations are rare in hematologic malignancies and their pathogenetic role is mostly poorly understood. We present a comprehensive molecular characterization of a novel constitutional chromosomal translocation found in two siblings - sisters - diagnosed with myelodysplastic syndrome (MDS). MATERIALS AND METHODS Bone marrow and blood cells from the two patients were examined using G-banding, RNA sequencing, PCR, and Sanger sequencing. RESULTS We identified a balanced t(17;19)(q21;p13) translocation in both siblings' bone marrow, blood cells, and phytohemagglutinin-stimulated lymphocytes. The translocation generated a MYO1F::WNK4 chimera on the der(19)t(17;19), encoding a chimeric serine/threonine kinase, and a VPS25::MYO1F on the der(17), potentially resulting in an aberrant VPS25 protein. CONCLUSION The t(17;19)(q21;p13) translocation found in the two sisters probably predisposed them to myelodysplasia. How the MYO1F::WNK4 and/or VPS25::MYO1F chimeras, perhaps especially MYO1F::WNK4 that encodes a chimeric serine/threonine kinase, played a role in MDS pathogenesis, remains incompletely understood.
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Affiliation(s)
- Ioannis Panagopoulos
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway;
| | - Kristin Andersen
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Vidar Stavseth
- Department of Haematology, Levanger Hospital, Levanger, Norway
| | - Synne Torkildsen
- Department of Haematology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Sverre Heim
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
- Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Maren Randi Tandsæther
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
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Folpe AL. Xanthogranulomatous Epithelial Tumors and Keratin-Positive Giant Cell Rich Tumors of Soft Tissue and Bone: Two Sides of the Same Coin. Surg Pathol Clin 2024; 17:57-64. [PMID: 38278607 DOI: 10.1016/j.path.2023.07.002] [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] [Indexed: 01/28/2024]
Abstract
Xanthogranulomatous epithelial tumor is a recently described soft tissue tumor characterized by subcutaneous location, partial encapsulation, a xanthogranulomatous inflammatory cell infiltrate, and keratin-positive mononuclear cells. It shares some morphologic features with keratin-positive, giant cell-rich soft tissue tumors. Both have recently been shown to harbor HMGA2::NCOR2 fusions. The relationship between these tumors and their differential diagnosis with other osteoclast-containing soft tissue tumors is discussed.
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Affiliation(s)
- Andrew L Folpe
- Department of Pathology and Laboratory Medicine, Mayo Clinic, Rochester, MN 55905, USA.
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Dehner CA, Lo YC, Chopra S, Demicco EG, He K, Hirbe AC, Folpe AL, Chrisinger JSA. CSF1 expression in xanthogranulomatous epithelial tumor/keratin-positive giant cell-rich tumor. Hum Pathol 2024; 143:1-4. [PMID: 37993023 DOI: 10.1016/j.humpath.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/09/2023] [Accepted: 11/17/2023] [Indexed: 11/24/2023]
Abstract
"Xanthogranulomatous epithelial tumor" (XGET) and "keratin-positive giant cell-rich soft tissue tumor" (KPGCT), two recently described mesenchymal neoplasms, likely represent different aspects of a single entity. Both tumors are composed of only a small minority of tumor cells surrounded by large numbers of non-neoplastic inflammatory cells and histiocytes, suggesting production of a paracrine factor with resulting "landscape effect," as seen in tenosynovial giant cell tumor. Recent evidence suggests that the paracrine factor in XGET/KPGCT may be CSF1, as in tenosynovial giant cell tumor. We hypothesized that CSF1 is overexpressed in XGET/KPGCT. To test our hypothesis, we performed quantitative real time PCR (qPCR) for CSF1 expression and CSF1 RNAscope chromogenic in situ hybridization (CISH) on 6 cases of XGET/KPGCT. All cases were positive with CSF1 CISH and showed increased expression of CSF1 by qPCR. Our findings provide additional evidence that the CSF1/CSF1R pathway is involved in the pathogenesis of XGET/KPGCT. These findings suggest a possible role for CSF1R inhibition in the treatment of unresectable or metastatic XGET/KPGCT.
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Affiliation(s)
- Carina A Dehner
- Department of Anatomic Pathology and Laboratory Medicine, Indiana University, 635 Barnhill Drive, Indianapolis, IN, 46202, USA; Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 1st St SW, Rochester, MN, 55905, USA; Department of Pathology and Immunology, Division of Anatomic and Molecular Pathology, Washington University School of Medicine, 660 S. Euclid Ave, St. Louis, MO, 63110, USA.
| | - Ying-Chun Lo
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 1st St SW, Rochester, MN, 55905, USA
| | - Shefali Chopra
- Department of Pathology, University of Southern California, 1975 Zonal Ave, Los Angeles, CA, 90033, USA.
| | - Elizabeth G Demicco
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital and Laboratory Medicine and Pathobiology, University of Toronto, 600 University Ave, Toronto, ON, M5G 1X5, Canada.
| | - Kevin He
- Department of Internal Medicine, Division of Oncology, Washington University School of Medicine and Siteman Cancer Center, 660 S. Euclid Ave, St. Louis, MO, 63110, USA.
| | - Angela C Hirbe
- Department of Internal Medicine, Division of Oncology, Washington University School of Medicine and Siteman Cancer Center, 660 S. Euclid Ave, St. Louis, MO, 63110, USA.
| | - Andrew L Folpe
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 1st St SW, Rochester, MN, 55905, USA.
| | - John S A Chrisinger
- Department of Pathology and Immunology, Division of Anatomic and Molecular Pathology, Washington University School of Medicine, 660 S. Euclid Ave, St. Louis, MO, 63110, USA.
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Weigelt MA, Azzato EM, Habermehl GK, Billings SD, Ko JS, Fritchie KJ. Keratin-positive giant cell-rich tumors of soft tissue with HMGA2::NCOR2 fusions. J Cutan Pathol 2023; 50:977-982. [PMID: 37496152 DOI: 10.1111/cup.14497] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 06/14/2023] [Accepted: 07/03/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND Giant cell tumor of soft tissue (GCT-ST) is a rare soft tissue neoplasm that is morphologically similar to but genetically distinct from giant cell tumor of bone. A novel keratin-positive GCT-ST (KPGCT-ST) harboring HMGA2::NCOR2 fusions was recently discovered. Fewer than 30 cases have been described; herein is reported an additional seven. METHODS Cases diagnosed as GCT-ST were retrieved from institutional archives and consultation files. The histopathologic characteristics were assessed, and the electronic medical record was reviewed. RESULTS Seven tumors were identified in six women and one man with a median age of 23 years. All patients underwent excision; no recurrences or metastases were noted during a median follow-up period of 7 months. Histopathologically, the tumors were characterized by a multinodular proliferation of keratin-positive mononuclear cells with evenly admixed osteoclast-like giant cells and absent neoplastic bone. A fibrous capsule with lymphoid cuffing was frequently seen. Foamy macrophages, inflammation, hemorrhage, and hemosiderin were variably present. The HMGA2::NCOR2 fusion was detected in all cases. CONCLUSIONS Our findings support previously reported hypotheses that KPGCT-ST is a spectrum of the same entity as the recently described xanthogranulomatous epithelial tumor. Although follow-up data are limited, to date, KPGCT-ST appears to follow an indolent course.
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Affiliation(s)
- Maximillian A Weigelt
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Elizabeth M Azzato
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Steven D Billings
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Jennifer S Ko
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Karen J Fritchie
- Department of Pathology, Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio, USA
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Perret R, Malaka Z, Velasco V, Llamas-Gutierrez F, Ropars M, Linck PA, Hostein I, Azmani R, Valo I, Galmiche L, Moreau A, de Pinieux G, Michot A, Bochaton D, Coindre JM, Le Loarer F. Giant Cell Tumors With HMGA2::NCOR2 Fusion : Clinicopathologic, Molecular, and Epigenetic Study of a Distinct Entity. Am J Surg Pathol 2023; 47:801-811. [PMID: 37170907 DOI: 10.1097/pas.0000000000002051] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Giant cell tumors (GCTs) with high mobility group AT-Hook 2 ( HMGA2 )::nuclear receptor corepressor 2 ( NCOR2 ) fusion are rare mesenchymal tumors of controversial nosology, which have been anecdotally reported to respond to CSFR1 inhibitors. Here, we performed a comprehensive study of 6 GCTs with HMGA2::NCOR2 fusion and explored their relationship with other giant cell-rich neoplasms. Tumors occurred in 4 females and 2 males ranging in age from 17 to 32 years old (median 24). Three lesions originated in subcutaneous soft tissue and 3 in bone. Tumor size ranged from 20 to 33 mm (median 27 mm). The lesions had a nodular/multinodular architecture and were composed of sheets of mononuclear "histiocytoid" cells with uniform nuclei intermingled with multinucleated giant cells. Mitotic activity was low and nuclear atypia and metaplastic bone were absent. Variable findings included necrosis, cystic degeneration, lymphocytic infiltrate (sometimes forming nodules), and xanthogranulomatous inflammation. On immunohistochemistry, all cases focally expressed pan-keratin and were negative with SATB2 and H3.3G34W. Whole RNA-sequencing was performed in all cases of GCT with HMGA2::NCOR2 fusion and a subset of giant cell-rich tumors (tenosynovial-GCT, n = 19 and "wild-type" GCT of soft tissue, n = 9). Hierarchical clustering of RNA-sequencing data showed that GCT with HMGA2::NCOR2 fusion formed a single cluster, independent of the other 2 entities. Methylome profiling showed similar results, but the distinction from "wild-type" GCT of soft tissue was less flagrant. Gene expression analysis showed similar levels of expression of the CSF1/CSFR1 axis between GCT with HMGA2::NCOR2 fusion and tenosynovial-GCT, supporting their potential sensitivity to CSFR1 inhibitors. Clinical follow-up was available for 5 patients (range: 10 to 64 mo; median 32 mo). Three patients (60%) experienced local recurrences, whereas none had distant metastases or died of disease. Overall, our study confirms and expands previous knowledge on GCT with HMGA2::NCOR2 fusion and supports its inclusion as an independent entity.
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Affiliation(s)
- Raul Perret
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Center, Bordeaux, France
- Bordeaux Institute of Oncology, BRIC, INSERM, Bordeaux University, Bergonié Institute, Bordeaux, France
| | - Zaki Malaka
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Center, Bordeaux, France
- University of Bordeaux, Talence, France
| | - Valérie Velasco
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Center, Bordeaux, France
| | | | - Mickael Ropars
- Orthopedic surgery department, Rennes University Hospital, Rennes, France
| | - Pierre-Antoine Linck
- Department of Radiology, Bergonié Institute, Comprehensive Cancer Center, Bordeaux, France
| | - Isabelle Hostein
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Center, Bordeaux, France
| | - Rihab Azmani
- Department of Bioinformatics, Bergonie Institute, Comprehensive Cancer Center, Bordeaux, France
| | - Isabelle Valo
- Department of Pathology, Institute of Cancerology of the West, Angers, France
| | - Louise Galmiche
- Department of Pathology, Nantes University Hospital, Nantes, France
| | - Anne Moreau
- Department of Pathology, Nantes University Hospital, Nantes, France
| | - Gonzague de Pinieux
- Department of Pathology, Trousseau Hospital-Tours University Hospital, Chambray-lés-Tours, France
| | - Audrey Michot
- Plastic and Reconstructive Surgery Department, Bergonié Institute, Bordeaux, France
| | | | - Jean-Michel Coindre
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Center, Bordeaux, France
| | - François Le Loarer
- Department of Biopathology, Institut Bergonié, Comprehensive Cancer Center, Bordeaux, France
- Bordeaux Institute of Oncology, BRIC, INSERM, Bordeaux University, Bergonié Institute, Bordeaux, France
- University of Bordeaux, Talence, France
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12
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Panagopoulos I, Andersen K, Brunetti M, Gorunova L, Lund-Iversen M, Micci F, Heim S. Fusion of the High-mobility Group AT-Hook 2 ( HMGA2) and the Gelsolin ( GSN) Genes in Lipomas With t(9;12)(q33;q14) Chromosomal Translocation. In Vivo 2023; 37:524-530. [PMID: 36881074 PMCID: PMC10026638 DOI: 10.21873/invivo.13110] [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: 12/13/2022] [Revised: 01/05/2023] [Accepted: 01/13/2023] [Indexed: 03/08/2023]
Abstract
BACKGROUND/AIM Lipomas are benign tumors composed of mature fat cells. They are common soft tissue tumors that often carry chromosome aberrations involving 12q14 resulting in rearrangements, deregulation, and generation of chimeras of the high-mobility group AT-hook 2 gene (HMGA2) which maps in 12q14.3. In the present study, we report the finding of t(9;12)(q33;q14) translocation in lipomas and describe its molecular consequences. MATERIALS AND METHODS Four lipomas from two male and two female adult patients were selected because their neoplastic cells carried a t(9;12)(q33;q14) as the sole karyotypic aberration. The tumors were investigated using RNA sequencing, reverse transcription polymerase chain reaction (RT-PCR), and Sanger sequencing techniques. RESULTS RNA sequencing of a t(9;12)(q33;q14)-lipoma detected an in-frame fusion of HMGA2 with the gelsolin gene (GSN) from 9q33. RT-PCR together with Sanger sequencing confirmed the presence of an HMGA2::GSN chimera in the tumor as well as in two other tumors from which RNA was available. The chimera was predicted to code for an HMGA2::GSN protein which would contain the three AT-hook domains of HMGA2 and the entire functional part of GSN. CONCLUSION t(9;12)(q33;q14) is a recurrent cytogenetic aberration in lipomas and generates an HMGA2::GSN chimera. Similar to what is seen in other rearrangements of HMGA2 in mesenchymal tumors, the translocation physically separates the part of HMGA2 encoding AT-hook domains from the gene's 3'-terminal part which contains elements that normally regulate HMGA2 expression.
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Affiliation(s)
- Ioannis Panagopoulos
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway;
| | - Kristin Andersen
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Marta Brunetti
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Ludmila Gorunova
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Marius Lund-Iversen
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Francesca Micci
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Sverre Heim
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
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Rekhi B, Dave V. Giant cell tumor of bone: An update, including spectrum of pathological features, pathogenesis, molecular profile and the differential diagnoses. Histol Histopathol 2023; 38:139-153. [PMID: 35766228 DOI: 10.14670/hh-18-486] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Giant cell tumor of bone (GCTB) is an enigmatic tumor. Despite its benign histological appearance and clinical behavior in most cases, it is associated with recurrences, uncommonly metastasis, and rarely with a malignant transformation. During the last few years, there has been a significant evolution in the diagnosis and management of GCTB, including discoveries related to the underlying pathogenesis (RANK/RANK/OPG pathway), with treatment-related implications in the form of denosumab (approved inhibitor for targeting RANKL), leading to improved surgical resections, especially in cases of recurrent, large and borderline resectable tumors. Lately, a specific Histone mutation, namely H3.3G34W underlying almost all GCTBs has been discovered, further leading to the identification of a highly sensitive and specific immunohistochemical antibody marker, H3.3G34W, which is very useful for an exact diagnosis of a GCTB, including its differentiation from its various mimics, which has significant implications. This review describes clinicopathological features of a GCTB, including its variable features, recent concepts, underlying pathogenesis, post-denosumab related changes and various entities that constitute its differential diagnosis, including their molecular signatures, with treatment-related implications.
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Affiliation(s)
- Bharat Rekhi
- Department of Surgical Pathology, Tata Memorial Hospital and Homi Bhabha National Institute (HBNI) University, Mumbai, Maharashtra, India.
| | - Vinayak Dave
- Department of Surgical Pathology, Tata Memorial Hospital and Homi Bhabha National Institute (HBNI) University, Mumbai, Maharashtra, India
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14
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Gauduchon T, Vanacker H, Pissaloux D, Cassier P, Dufresne A, Karanian M, Meurgey A, Bouhamama A, Gouin F, Ray-Coquard I, Blay JY, Tirode F, Brahmi M. Expanding the molecular spectrum of tenosynovial giant cell tumors. Front Oncol 2022; 12:1012527. [PMID: 36439507 PMCID: PMC9691341 DOI: 10.3389/fonc.2022.1012527] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/24/2022] [Indexed: 11/11/2022] Open
Abstract
Background While great advances in clinical and pathological description of tenosynovial giant cell tumors (TGCT) have been made, TGCT molecular heterogeneity represents an ongoing challenge. The canonical oncogenic fusion CSF1::COL6A3 is not systematically observed, suggesting that other oncogenic mechanisms are involved in tumorigenesis. This study aims to explore by RNA sequencing a retrospective series of tumors diagnosed as TGCT, in order to provide a better description of their molecular landscape and to correlate molecular features with clinical data. Methods We analyzed clinicopathological data and performed whole-exome RNA sequencing on 41 TGCT samples. Results RNAseq analysis showed significant higher CSF1 and CSF1-R expression than a control panel of 2642 solid tumors. RNA sequencing revealed fusion transcripts in 14 patients including 6 not involving CSF1 and some previously unreported fusions. Unsupervised clustering on the expression profiles issued from this series suggested two distinct subgroups: one composed of various molecular subtypes including CSF1 and FN1 rearranged samples and one composed of four tumors harboring an HMGA2::NCOR2 fusion, suggesting distinct tumor entities. Overall, 15 patients received at least one systemic anti-CSF1R treatment and clinical improvement was observed in 11 patients, including patients from both clusters. Discussion This study reported molecular heterogeneity in TGCT, contrasting with the clinical and pathological homogeneity and the ubiquitous high CSF1 and CSF1R expression levels. Whether molecular diversity may impact the efficacy of systemic treatments needs to be further investigated.
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Affiliation(s)
- Thibault Gauduchon
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
- *Correspondence: Thibault Gauduchon,
| | - Helene Vanacker
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Lyon, France
| | - Daniel Pissaloux
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
| | - Philippe Cassier
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
| | - Armelle Dufresne
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
| | - Marie Karanian
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
| | - Alexandra Meurgey
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
| | - Amine Bouhamama
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
| | - François Gouin
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
| | - Isabelle Ray-Coquard
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
- Université Claude Bernard Lyon 1, Faculté de médecine Lyon-Est, Lyon, France
| | - Jean-Yves Blay
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
- Université Claude Bernard Lyon 1, Faculté de médecine Lyon-Est, Lyon, France
| | - Franck Tirode
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Lyon, France
| | - Mehdi Brahmi
- Département d’oncologie médicale, Centre de lutte contre le cancer Léon-Bérard, Lyon, France
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Lyon, France
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PANAGOPOULOS IOANNIS, HEIM SVERRE. Neoplasia-associated Chromosome Translocations Resulting in Gene Truncation. Cancer Genomics Proteomics 2022; 19:647-672. [PMID: 36316036 PMCID: PMC9620447 DOI: 10.21873/cgp.20349] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/27/2022] Open
Abstract
Chromosomal translocations in cancer as well as benign neoplasias typically lead to the formation of fusion genes. Such genes may encode chimeric proteins when two protein-coding regions fuse in-frame, or they may result in deregulation of genes via promoter swapping or translocation of the gene into the vicinity of a highly active regulatory element. A less studied consequence of chromosomal translocations is the fusion of two breakpoint genes resulting in an out-of-frame chimera. The breaks then occur in one or both protein-coding regions forming a stop codon in the chimeric transcript shortly after the fusion point. Though the latter genetic events and mechanisms at first awoke little research interest, careful investigations have established them as neither rare nor inconsequential. In the present work, we review and discuss the truncation of genes in neoplastic cells resulting from chromosomal rearrangements, especially from seemingly balanced translocations.
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Affiliation(s)
- IOANNIS PANAGOPOULOS
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - SVERRE HEIM
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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16
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Dehner CA, Baker JC, Bell R, Dickson BC, Schmidt RE, Demicco EG, Chrisinger JSA. Xanthogranulomatous epithelial tumors and keratin-positive giant cell-rich soft tissue tumors: two aspects of a single entity with frequent HMGA2-NCOR2 fusions. Mod Pathol 2022; 35:1656-1666. [PMID: 35690644 DOI: 10.1038/s41379-022-01115-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/17/2022] [Accepted: 05/17/2022] [Indexed: 11/09/2022]
Abstract
Xanthogranulomatous epithelial tumor (XGET) and keratin-positive giant cell-rich soft tissue tumor with HMGA2-NCOR2 fusion (KPGCT) are two recently described neoplasms with both distinct and overlapping clinical and histopathologic features. We hypothesized that XGET and KPGCT may be related and represent a histologic spectrum of a single entity. To test this, we sought to characterize the clinical, radiographic, immunohistochemical, ultrastructural and molecular features of additional tumors with features of XGET and/or KPGCT, which we refer to descriptively as keratin-positive xanthogranulomatous/giant cell-rich tumors (KPXG/GCT). The archives were searched for potential cases of KPXG/GCT. Clinical and imaging features were noted. Slides were assessed for histologic and immunohistochemical findings. Ultrastructural and next generation RNA sequencing-based analysis were also performed. Nine cases were identified arising in seven women and two men [median age of 33 years (range: 12-87)]. Median tumor size was 4 cm (range: 2.4-14.0 cm) and tumors presented in the thigh (2), buttock (1), forearm (2), groin (1), cranial fossa (1), ilium (1), and tibia (1). Morphologically, tumors were most frequently characterized by a fibrous capsule, with associated lymphoid reaction, enclosing a polymorphous proliferation of histiocytes, giant cells (Touton and osteoclast-types), mixed inflammatory infiltrate, hemorrhage and hemosiderin deposition, which imparted a variably xanthogranulomatous to giant cell tumor-like appearance. One case clearly showed mononuclear cells with eosinophilic cytoplasm characteristic of XGET. All cases expressed keratin and 7 of 9 were found to harbor HMGA2-NCOR2 fusions including cases with xanthogranulomatous appearance. One patient developed local recurrence and multifocal pulmonary lesions, which were radiographically suspicious for metastases. Shared clinical, histologic and immunohistochemical features, and the shared presence of HMGA2-NCOR2 fusions supports interpretation of KPXG/GCT as a single entity which includes XGET and KPGCT. Given limited clinical follow-up to date and rare cases with apparently aggressive findings, we provisionally regard these tumors as having uncertain biologic potential.
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Affiliation(s)
- Carina A Dehner
- Department of Pathology and Immunology, Division of Anatomic Pathology, Washington University School of Medicine, St. Louis, MO, USA
| | - Jonathan C Baker
- Mallinckrodt Institute of Radiology, Musculoskeletal Section, Washington University School of Medicine, St. Louis, MO, USA
| | - Robert Bell
- Department of Pathology and Immunology, Division of Anatomic Pathology, Washington University School of Medicine, St. Louis, MO, USA
| | - Brendan C Dickson
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital & Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Robert E Schmidt
- Department of Pathology and Immunology, Division of Neuropathology, Washington University School of Medicine, St. Louis, MO, USA
| | - Elizabeth G Demicco
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital & Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - John S A Chrisinger
- Department of Pathology and Immunology, Division of Anatomic Pathology, Washington University School of Medicine, St. Louis, MO, USA.
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