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Kommoss FKF, Chong AS, Apellaniz-Ruiz M, Turashvili G, Park KJ, Hanley K, Valera ET, von Deimling A, Vujanic G, McCluggage WG, Foulkes WD. Teratoma-associated and so-called pure Wilms tumour of the ovary represent two separate tumour types with distinct molecular features. Histopathology 2024; 84:683-696. [PMID: 38084641 DOI: 10.1111/his.15116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/23/2023] [Accepted: 11/26/2023] [Indexed: 02/07/2024]
Abstract
AIMS Ovarian Wilms tumour (WT)/nephroblastoma is an extremely rare neoplasm that has been reported to occur in pure form or as a component of a teratomatous neoplasm. We hypothesized that teratoma-associated and pure ovarian WT may represent different tumour types with diverging molecular backgrounds. To test this hypothesis, we comprehensively characterized a series of five tumours originally diagnosed as ovarian WT. METHODS AND RESULTS The five cases comprised three teratoma-associated (two mature and one immature) and two pure WTs. Two of the teratoma-associated WTs consisted of small nodular arrangements of "glandular"/epithelial structures, while the third consisted of both an epithelial and a diffuse spindle cell/blastemal component. The pure WTs consisted of "glandular" structures, which were positive for sex cord markers (including inhibin and SF1) together with a rhabdomyosarcomatous component. The two pure WTs harboured DICER1 pathogenic variants (PVs), while the three associated with teratomas were DICER1 wildtype. Panel-based DNA sequencing of four of the cases did not identify PVs in the other genes investigated. Analysis of the HA19/IGF2 imprinting region showed retention of imprinting in the pure WTs but loss of heterozygosity with hypomethylation of the ICR1 region in two of three teratoma-associated WTs. Furthermore, copy number variation and clustering-based whole-genome DNA methylation analyses identified divergent molecular profiles for pure and teratoma-associated WTs. CONCLUSION Based on the morphological features, immunophenotype, and molecular findings (DICER1 PVs, copy number, and DNA methylation profiles), we suggest that the two cases diagnosed as pure primary ovarian WT represent moderately to poorly differentiated Sertoli Leydig cell tumours (SLCTs), while the tumours arising in teratomas represent true WTs. It is possible that at least some prior cases reported as pure primary ovarian WT represent SLCTs.
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Affiliation(s)
- Felix K F Kommoss
- Department of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Molecular Oncology, British Columbia Cancer Research Institute, Vancouver, BC, Canada
| | - Anne-Sophie Chong
- Department of Human Genetics, McGill University, Montreal, QC, Canada
- Cancer Axis, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada
- Molecular Mechanisms and Experimental Therapy in Oncology Program (Oncobell), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Maria Apellaniz-Ruiz
- Genomics Medicine Unit, Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Navarra, Spain
| | - Gulisa Turashvili
- Department of Pathology and Laboratory Medicine, Emory University Hospital, Atlanta, GA, USA
| | - Kay J Park
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Krisztina Hanley
- Department of Pathology and Laboratory Medicine, Emory University Hospital, Atlanta, GA, USA
| | - Elvis Terci Valera
- Department of Pediatrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Andreas von Deimling
- Department of Neuropathology, Heidelberg University Hospital, Heidelberg, Germany
- Clinical Cooperation Unit Neuropathology, German Consortium for Translational Cancer Research (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - W Glenn McCluggage
- Department of Pathology, Belfast Health and Social Care Trust, Belfast, UK
| | - William D Foulkes
- Department of Human Genetics, McGill University, Montreal, QC, Canada
- Cancer Axis, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada
- Cancer Research Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Gerald Bronfman Department of Oncology, McGill University, Montreal, QC, Canada
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Kim J, Schultz KAP, Hill DA, Stewart DR. The prevalence of germline DICER1 pathogenic variation in cancer populations. Mol Genet Genomic Med 2019; 7:e555. [PMID: 30672147 PMCID: PMC6418698 DOI: 10.1002/mgg3.555] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/12/2018] [Accepted: 12/05/2018] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The DICER1 syndrome is an autosomal dominant tumor-predisposition disorder associated with pleuropulmonary blastoma, a rare pediatric lung cancer. Somatic missense variation in "hotspot" codons in the RNaseIIIb domain (E1705, D1709, G1809, D1810, E1813) is observed in DICER1-associated tumors. Previously, we found the prevalence of germline pathogenic DICER1 variation in the general population is 1:10,600. In this study, we investigated the prevalence of pathogenic DICER1 germline variation in The Cancer Genome Atlas (TCGA; 32 adult cancer types; 9,173 exomes) and the Therapeutically Applicable Research to Generate Effective Treatment (TARGET; two pediatric cancer types; 175 exomes) cohorts. METHODS All datasets were annotated and binned into four categories: pathogenic, likely pathogenic, variant of unknown significance, or likely benign. RESULTS The prevalence of DICER1 pathogenic variants was 1:4,600 in TCGA. A single participant with a uterine corpus endometrial carcinoma harbored two pathogenic germline DICER1 (hotspot and splice-donor) variants, and a single participant with a rectal adenocarcinoma harbored a germline DICER1 stop-gained variant. In the smaller TARGET dataset, we observed no pathogenic germline variants. CONCLUSION This is the largest comprehensive analysis of DICER1 pathogenic variation in adult and pediatric cancer populations using publicly available data. The observation of germline DICER1 variation with uterine corpus endometrial carcinoma merits additional investigation.
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Affiliation(s)
- Jung Kim
- Clinical Genetics Branch, Division of Cancer Epidemiology and GeneticsNational Cancer Institute, NIHRockvilleMaryland
| | - Kris Ann P. Schultz
- Cancer and Blood DisordersChildren's MinnesotaMinneapolisMinnesota
- International Pleuropulmonary Blastoma/DICER1 RegistryMinneapolisMinnesota
- International Ovarian and Testicular Stromal Tumor RegistryMinneapolisMinnesota
| | - Dana Ashley Hill
- Division of Pathology and Center for Cancer and Immunology ResearchChildren’s National Health SystemWashingtonDistrict of Columbia
| | - Douglas R. Stewart
- Clinical Genetics Branch, Division of Cancer Epidemiology and GeneticsNational Cancer Institute, NIHRockvilleMaryland
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