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A new diagnostic algorithm using biopsy specimens in adult T-cell leukemia/lymphoma: combination of RNA in situ hybridization and quantitative PCR for HTLV-1. Mod Pathol 2021; 34:51-58. [PMID: 32801340 PMCID: PMC7806504 DOI: 10.1038/s41379-020-0635-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/15/2020] [Accepted: 07/15/2020] [Indexed: 11/13/2022]
Abstract
Histopathological distinction between adult T-cell leukemia/lymphoma (ATLL) and other T-cell neoplasms is often challenging. The current gold standard for the accurate diagnosis of ATLL is the Southern blot hybridization (SBH) assay, which detects clonal integration of human T-cell leukemia virus type I (HTLV-1) provirus. However, SBH cannot be performed with small biopsy or formalin-fixed paraffin-embedded (FFPE) tissue samples because this assay requires a large amount of DNA without degradation. Here we developed a new diagnostic algorithm for the accurate diagnosis of ATLL using FFPE samples. This method combines two HTLV-1 detection assays, namely, ultrasensitive RNA in situ hybridization using RNAscope for HTLV-1 bZIP factor (HBZ-RNAscope), and quantitative PCR targeting the tax gene (tax-qPCR). We analyzed 119 FFPE tissue specimens (62 ATLL, and 57 non-ATLL, including 41 HTLV-1 carriers) and compared them with the SBH results using the corresponding fresh-frozen samples. As a result, tax-qPCR had a higher ATLL identification rate than HBZ-RNAscope (88% [52/59], and 63% [39/62], respectively). However, HBZ-RNAscope clearly visualized the localization of HTLV-1-infected tumor cells and its identification rate increased to 94% (17/18) when the analysis was limited to samples up to 2 years old, indicating its usefulness in the daily diagnosis. The diagnostic algorithm combining these two assays successfully evaluated 94% (112/119) of samples and distinguished ATLL from non-ATLL cases including HTLV-1 carriers with 100% sensitivity and specificity. This method is expected to replace SBH and increase the accuracy of the diagnosis of ATLL.
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Robson A, Assaf C, Bagot M, Burg G, Calonje E, Castillo C, Cerroni L, Chimenti N, Dechelotte P, Franck F, Geerts M, Gellrich S, Goodlad J, Kempf W, Knobler R, Massone C, Meijer C, Ortiz P, Petrella T, Pimpinelli N, Roewert J, Russell-Jones R, Santucci M, Steinhoff M, Sterry W, Wechsler J, Whittaker S, Willemze R, Berti E. Aggressive epidermotropic cutaneous CD8+ lymphoma: a cutaneous lymphoma with distinct clinical and pathological features. Report of an EORTC Cutaneous Lymphoma Task Force Workshop. Histopathology 2015; 67:425-41. [PMID: 24438036 DOI: 10.1111/his.12371] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 01/12/2014] [Indexed: 12/11/2022]
Abstract
AIMS Aggressive epidermotropic cutaneous CD8(+) lymphoma is currently afforded provisional status in the WHO classification of lymphomas. An EORTC Workshop was convened to describe in detail the features of this putative neoplasm and evaluate its nosological status with respect to other cutaneous CD8(+) lymphomas. METHODS AND RESULTS Sixty-one CD8(+) cases were analysed at the workshop; clinical details, often with photographs, histological sections, immunohistochemical results, treatment and patient outcome were discussed and recorded. Eighteen cases had distinct features and conformed to the diagnosis of aggressive epidermotropic cutaneous CD8(+) lymphoma. The patients typically present with widespread plaques and tumours, often ulcerated and haemorrhagic, and histologically have striking pagetoid epidermotrophism. A CD8(+) /CD45RA(+) /CD45RO(-) /CD2(-) /CD5(-) /CD56(-) phenotype, with one or more cytotoxic markers, was found in seven of 18 patients, with a very similar phenotype in the remainder. The tumours seldom involve lymph nodes, but mucosal and central nervous system involvement are not uncommon. The prognosis is poor, with a median survival of 12 months. Examples of CD8(+) mycosis fungoides, lymphomatoid papulosis and Woringer-Kolopp disease presented the typical features well documented in the CD4(+) forms of those diseases. CONCLUSIONS Aggressive epidermotropic cutaneous CD8(+) lymphoma is a distinct lymphoma that warrants inclusion as a distinct entity in future revisions of lymphoma classifications.
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Affiliation(s)
| | - Chalid Assaf
- Department of Dermatology, Charité-University Medicine, Berlin, Germany
| | - Martine Bagot
- Department of Pathology, Universite Paris, Paris, France
| | - Gunter Burg
- Department of Dermatology and Venereology, University of Zurich, Zurich, Switzerland
| | | | | | - Lorenzo Cerroni
- Department of Dermatology Medical, University of Graz, Graz, Austria
| | - Nicola Chimenti
- Department of Dermatology, University of L'Aquila, Rome, Italy
| | - Pierre Dechelotte
- Department of Pathology, University of Clermont-Ferrand, Clermont-Ferrand, France
| | - Frederic Franck
- Department of Pathology, University of Clermont-Ferrand, Clermont-Ferrand, France
| | - Maria Geerts
- Department of Dermatology, Ghent University Hospital, Gent, Belgium
| | - Sylke Gellrich
- Department of Dermatology, Charité-University Medicine, Berlin, Germany
| | - John Goodlad
- Department of Pathology, Western General Hospital, Edinburgh, UK
| | - Werner Kempf
- Department of Dermatology and Venereology, University of Zurich, Zurich, Switzerland
| | - Robert Knobler
- Department of Dermatology, University of Vienna, Vienna, Austria
| | - Cesare Massone
- Department of Dermatology Medical, University of Graz, Graz, Austria
| | - Chris Meijer
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands
| | - Pablo Ortiz
- Hospital Universitario, Universidad Complutense, Madrid, Spain
| | - Tony Petrella
- Departmentof Pathology, Dijon's University Hospital, Dijon, France
| | - Nicola Pimpinelli
- Division of Dermatology, University of Florence Medical School, Florence, Italy
| | - Joclim Roewert
- Department of Dermatology, Charité-University Medicine, Berlin, Germany
| | | | - Marco Santucci
- Division of Pathological Anatomy, University of Florence, Florence, Italy
| | - Mattias Steinhoff
- Department of Dermatology, Charité-University Medicine, Berlin, Germany
| | - Wolfram Sterry
- Department of Dermatology, Charité-University Medicine, Berlin, Germany
| | - Janine Wechsler
- Department of Pathology Henri-Mondor Hospital, University Paris-Val-de-Marne, Paris, France
| | | | - Rein Willemze
- Department of Dermatology, Leiden University, Leiden, the Netherlands
| | - Emilio Berti
- Department of Dermatology, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico and Università degli Studi di Milano-Bicocca, Milan, Italy
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Ishigaki T, Isobe M, Kobayashi S, Yuji K, Ohno N, Watanabe N, Tojo A, Uchimaru K. Development of peripheral T-cell lymphoma not otherwise specified in an HTLV-1 carrier. Int J Hematol 2013; 97:667-72. [PMID: 23568283 DOI: 10.1007/s12185-013-1314-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 11/29/2022]
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) causes adult T-cell leukemia (ATL) after a long latency period of about 60 years. As the mature T-cell neoplasms that emerge in patients infected with HTLV-1 are often ATL, T-cell neoplasms developing in such patients tend to be diagnosed simply as ATL without further investigation. However, not all T-cell neoplasms that develop in HTLV-1-infected cases are ATL. Mature T-cell malignancies other than ATL should be carefully excluded in patients infected with HTLV-1, as these sometimes closely resemble ATL in their clinical, morphological, and histological features. Here, we present a case of peripheral T-cell lymphoma not otherwise specified (PTCL-NOS) in an HTLV-1 carrier. Confirmation of monoclonal integration of the virus with Southern blotting leads to a definite diagnosis of ATL. Although we did not detect the monoclonal integration band of HTLV-1 in this case, the high HTLV-1 proviral load complicated the diagnosis. Multicolor flow cytometric analysis clearly showed that HTLV-1 was not integrated in the tumor cells, and facilitated discrimination of PTCL-NOS from ATL.
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Affiliation(s)
- Tomohiro Ishigaki
- Department of Hematology and Oncology, Research Hospital, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Tokyo 108-8639, Japan.
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