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Muniz TP, Sorotsky H, Kanjanapan Y, Rose AAN, Araujo DV, Fortuna A, Ghazarian D, Kamil ZS, Pugh T, Mah M, Thiagarajah M, Torti D, Spreafico A, Hogg D. Genomic Landscape of Malignant Peripheral Nerve Sheath Tumor‒Like Melanoma. J Invest Dermatol 2021; 141:2470-2479. [PMID: 33831431 DOI: 10.1016/j.jid.2021.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 10/21/2022]
Abstract
Malignant peripheral nerve sheath tumor (MPNST)-like melanoma is a rare malignancy with overlapping characteristics of both neural sarcoma and melanoma. Although the genomics of cutaneous melanoma has been extensively studied, those of MPNST-like melanoma have not. To characterize the genomic landscape of MPNST-like melanoma, we performed a single-center, retrospective cohort study at a tertiary academic cancer center. Consecutive patients with a confirmed histologic diagnosis of MPNST-like melanoma were screened, and those whose tissues were locally available were included in this analysis. Archival tissue from six patients (eight samples) was submitted for whole-exome and transcriptome sequencing analysis. We compared these data with available genomic studies of cutaneous melanoma and MPNST. NF1 was altered (mutated, deleted, or amplified) in 67% of patients. Genes related to cell cycle regulation were frequently altered, with frequent deletion of ZNF331, which, to the best of our knowledge, has not been previously described in cutaneous melanoma. The serine protease inhibitor SERPINB4 was deleted in 100% of the patients. We show that MPNST-like melanoma presents overlapping genomic features with cutaneous melanoma and MPNST, but it is unique by the frequency of loss of function of ZNF331 and SERPINB4.
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Affiliation(s)
- Thiago P Muniz
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada.
| | - Hadas Sorotsky
- Institute of Oncology, Chaim Sheba Medical Center at Tel-Hashomer, Ramant Gan, Israel
| | - Yada Kanjanapan
- Department of Medical Oncology, Canberra Region Cancer Centre, Canberra, Australia
| | - April A N Rose
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada; Gerald Bronfman Department of Oncology, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada; Segal Cancer Centre, Jewish General Hospital, Montreal, Quebec, Canada
| | - Daniel V Araujo
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada; Department of Medical Oncology, Hospital de Base, Sao Jose do Rio Preto, Brazil
| | - Alexander Fortuna
- Translational Genomics Laboratory, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Danny Ghazarian
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada; Department of Laboratory Medicine & Pathobiology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Zaid Saeed Kamil
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada; Department of Laboratory Medicine & Pathobiology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Trevor Pugh
- Translational Genomics Laboratory, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Michelle Mah
- Translational Genomics Laboratory, Ontario Institute for Cancer Research, Toronto, Ontario, Canada; Trillium Health Partners, Genetics Laboratory, Mississauga, Ontario, Canada
| | - Madhuran Thiagarajah
- Translational Genomics Laboratory, Ontario Institute for Cancer Research, Toronto, Ontario, Canada; Department of Laboratory Medicine, Unity Health Toronto, Toronto, Ontario, Canada
| | - Dax Torti
- Translational Genomics Laboratory, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Anna Spreafico
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada; Phase 1 Drug Development Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - David Hogg
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada
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