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Dudez O, Dalstein V, Kanagaratnam L, Nasri S, Coquelet C, Fichel C, Bouland N, Lemaire E, Diebold MD, Marchal-Bressenot A, Boulagnon-Rombi C. Is the Mirror Image Method Really Useful in Tumor Tissue Bank Quality Control? Biopreserv Biobank 2019; 17:539-545. [PMID: 31233333 DOI: 10.1089/bio.2018.0123] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Oncology research projects are highly dependent on the quality of tumor samples stored in the biobank. Microscopic control is important to ensure the quality of the frozen sample (Does the sample correspond to tumor tissue? Does the sample contain a sufficient number of tumor cells for molecular analysis?). The aim of this study was to evaluate the value of the mirror image method in quality control of colonic adenocarcinoma samples stored in a tumor bank. Microscopic concordance for the differentiation grade, malignant and normal cell percentages, necrosis, mucinous component, and ulceration was assessed on 82 colon adenocarcinoma banked samples and their paired, formalin-fixed, paraffin-embedded mirror controls. Molecular concordance for KRAS status was evaluated in 76 of these 82 cases. Morphological correspondence between frozen and mirror samples was good for the mucinous component (intraclass correlation coefficient [ICC] = 0.81), moderate for differentiation (Cohen's kappa coefficient [k] = 0.67), fair for malignant cells (ICC = 0.44), and poor for ulceration (k = 0.08), normal tissue (ICC = 0.36), and necrosis (ICC = 0.13) percentages. Molecular correspondence for KRAS status was almost perfect (95% correspondence, k = 0.88) between frozen and mirror samples. In conclusion, the mirror sample method is not a good alternative for microscopic and molecular control of frozen colonic adenocarcinoma samples.
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Affiliation(s)
- Oriane Dudez
- Pathology Department, Academic Hospital, Reims, France
| | - Véronique Dalstein
- Pathology Department, Academic Hospital, Reims, France.,Champagne Ardenne Cancers' Molecular Genetic Platform, Reims, France.,Inserm UMR-S 903, Université de Reims Champagne Ardenne, Reims, France
| | | | - Saviz Nasri
- Champagne Ardenne Biobank, Academic Hospital, Reims, France
| | | | | | - Nicole Bouland
- Pathology Department, Medicine University, Reims, France
| | - Emeric Lemaire
- Pathology Department, Academic Hospital, Reims, France.,Inserm UMR-S 903, Université de Reims Champagne Ardenne, Reims, France
| | - Marie-Danièle Diebold
- Pathology Department, Academic Hospital, Reims, France.,Champagne Ardenne Biobank, Academic Hospital, Reims, France.,Pathology Department, Medicine University, Reims, France
| | - Aude Marchal-Bressenot
- Pathology Department, Academic Hospital, Reims, France.,Pathology Department, Medicine University, Reims, France
| | - Camille Boulagnon-Rombi
- Pathology Department, Academic Hospital, Reims, France.,Pathology Department, Medicine University, Reims, France.,UMR CNRS 7369, Reims University, Reims, France
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Huguenin A, Lorot A, Zachar D, Dudez O, Mzabi A, Dupuis E, Lehrter V, Merol JC, Villena I, Depaquit J, Toubas D. Matrix-assisted laser desorption ionization-time of flight identification of Schizophyllum commune: perspectives on the review by Chowdhary et al. Med Mycol 2015; 53:896-7. [PMID: 26472778 DOI: 10.1093/mmy/myv031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Antoine Huguenin
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France
| | - Aurélie Lorot
- Service d'ORL et de Chirurgie Cervico-Faciale, CHU de Reims, Hopital Robert Debré, 45 rue Cognacq Jay, 51092 Reims cedex, France
| | - Dominique Zachar
- Laboratoire central d'Anatomie et de Cytologie pathologiques, CHU de Reims, Hôpital Robert-Debré, Université Reims Champagne-Ardenne, rue du Général-Koenig, 51100 Reims cedex, France
| | - Oriane Dudez
- Laboratoire central d'Anatomie et de Cytologie pathologiques, CHU de Reims, Hôpital Robert-Debré, Université Reims Champagne-Ardenne, rue du Général-Koenig, 51100 Reims cedex, France
| | - Alexandre Mzabi
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France EA 3800, Université Reims Champagne-Ardenne, France
| | - Emilie Dupuis
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France EA 3800, Université Reims Champagne-Ardenne, France
| | - Véronique Lehrter
- Université Reims Champagne-Ardenne, ANSES, EA4688 - USC 'transmission vectorielle et épidémiosurveillance de maladies parasitaires (VECPAR)', SFR Cap Santé, Faculté de Pharmacie, 51 rue Cognacq-Jay, 51096 Reims, France
| | - Jean-Claude Merol
- Service d'ORL et de Chirurgie Cervico-Faciale, CHU de Reims, Hopital Robert Debré, 45 rue Cognacq Jay, 51092 Reims cedex, France
| | - Isabelle Villena
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France EA 3800, Université Reims Champagne-Ardenne, France
| | - Jérôme Depaquit
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France Université Reims Champagne-Ardenne, ANSES, EA4688 - USC 'transmission vectorielle et épidémiosurveillance de maladies parasitaires (VECPAR)', SFR Cap Santé, Faculté de Pharmacie, 51 rue Cognacq-Jay, 51096 Reims, France
| | - Dominique Toubas
- Laboratoire de Parasitologie Mycologie, CHU de Reims, Université Reims Champagne Ardenne, Hôpital Maison Blanche, 45 rue Cognacq Jay, 51092 Reims cedex, France Equipe MéDIAN, Unité MEDyC CNRS UMR 7369, Université de Reims Champagne-Ardenne, France
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Huguenin A, Lorot A, Zachar D, Dudez O, Mérol JC, Dupuis E, Mzabi A, Fernandes M, Depaquit J, Toubas D. À propos d’un cas de sinusite à Schizophyllum commune : intérêt de la spectrométrie MALDI-TOF pour l’identification. J Mycol Med 2015. [DOI: 10.1016/j.mycmed.2015.02.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Leroux-Kozal V, Lévêque N, Brodard V, Lesage C, Dudez O, Makeieff M, Kanagaratnam L, Diebold MD. Merkel cell carcinoma: histopathologic and prognostic features according to the immunohistochemical expression of Merkel cell polyomavirus large T antigen correlated with viral load. Hum Pathol 2014; 46:443-53. [PMID: 25623078 DOI: 10.1016/j.humpath.2014.12.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/29/2014] [Accepted: 12/03/2014] [Indexed: 12/19/2022]
Abstract
Merkel cell carcinoma (MCC) is a neuroendocrine skin malignancy frequently associated with Merkel cell polyomavirus (MCPyV), which is suspected to be oncogenic. In a series of MCC patients, we compared clinical, histopathologic, and prognostic features according to the expression of viral large T antigen (LTA) correlated with viral load. We evaluated the LTA expression by immunohistochemistry using CM2B4 antibody and quantified viral load by real-time polymerase chain reaction. We analyzed formalin-fixed, paraffin-embedded (FFPE) tissue samples (n = 36) and corresponding fresh-frozen biopsies when available (n = 12), of the primary tumor and/or metastasis from 24 patients. MCPyV was detected in 88% and 58% of MCC patients by real-time polymerase chain reaction and immunohistochemistry, respectively. The relevance of viral load measurements was demonstrated by the strong consistency of viral load level between FFPE and corresponding frozen tissues as well as between primary tumor and metastases. From FFPE samples, 2 MCC subgroups were distinguished based on a viral load threshold defined by the positivity of CM2B4 immunostaining. In the LTA-negative subgroup with no or low viral load (nonsignificant), tumor cells showed more anisokaryosis (P = .01), and a solar elastosis around the tumor was more frequently observed (P = .03). LTA-positive MCCs with significant viral load had a lower proliferation index (P = .03) and a longer survival of corresponding patients (P = .008). Depending on MCPyV involvement, 2 MCC subgroups can be distinguished on histopathologic criteria, and the CM2B4 antibody is able to differentiate them reliably. Furthermore, the presence of a significant viral load in tumors is predictive of better prognosis.
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Affiliation(s)
- Valérie Leroux-Kozal
- Department of Pathology, Faculty of Medicine, Robert Debré University Hospital, 51092 Reims, France.
| | - Nicolas Lévêque
- Clinical and Molecular Virology Unit, University Hospital, 51092 Reims, France; Faculty of Medicine, EA-4684 Cardiovir SFR-CAP Santé, 51092 Reims, France
| | - Véronique Brodard
- Clinical and Molecular Virology Unit, University Hospital, 51092 Reims, France
| | - Candice Lesage
- Department of Dermatology, Robert Debré University Hospital, 51092 Reims, France
| | - Oriane Dudez
- Department of Pathology, Faculty of Medicine, Robert Debré University Hospital, 51092 Reims, France
| | - Marc Makeieff
- Department of Otolaryngology-Head and Neck Surgery, Robert Debré University Hospital, 51092 Reims, France
| | - Lukshe Kanagaratnam
- Department of Research and Innovation, Robert Debré University Hospital, 51092 Reims, France
| | - Marie-Danièle Diebold
- Department of Pathology, Faculty of Medicine, Robert Debré University Hospital, 51092 Reims, France
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