PMID- 36849712 OWN - NLM STAT- MEDLINE DCOM- 20230517 LR - 20230517 IS - 1365-2559 (Electronic) IS - 0309-0167 (Linking) VI - 82 IP - 7 DP - 2023 Jun TI - Lack of reproducibility of histopathological features in MYC-rearranged large B cell lymphoma using digital whole slide images: a study from the Lunenburg lymphoma biomarker consortium. PG - 1105-1111 LID - 10.1111/his.14896 [doi] AB - AIMS: Subclassification of large B cell lymphoma (LBCL) is challenging due to the overlap in histopathological, immunophenotypical and genetic data. In particular, the criteria to separate diffuse large B cell lymphoma (DLBCL) and high-grade B cell lymphoma (HGBL) are difficult to apply in practice. The Lunenburg Lymphoma Biomarker Consortium previously reported a cohort of over 5000 LBCL that included fluorescence in-situ hybridisation (FISH) data. This cohort contained 209 cases with MYC rearrangement that were available for a validation study by a panel of eight expert haematopathologists of how various histopathological features are used. METHODS AND RESULTS: Digital whole slide images of haematoxylin and eosin-stained sections allowed the pathologists to visually score cases independently as well as participate in virtual joint review conferences. Standardised consensus guidelines were formulated for scoring histopathological features and included overall architecture/growth pattern, presence or absence of a starry-sky pattern, cell size, nuclear pleomorphism, nucleolar prominence and a range of cytological characteristics. Despite the use of consensus guidelines, the results show a high degree of discordance among the eight expert pathologists. Approximately 50% of the cases lacked a majority score, and this discordance spanned all six histopathological features. Moreover, none of the histological variables aided in prediction of MYC single versus double/triple-hit or immunoglobulin-partner FISH-based designations or clinical outcome measures. CONCLUSIONS: Our findings indicate that there are no specific conventional morphological parameters that help to subclassify MYC-rearranged LBCL or select cases for FISH analysis, and that incorporation of FISH data is essential for accurate classification and prognostication. CI - (c) 2023 The Authors. Histopathology published by John Wiley & Sons Ltd. FAU - Natkunam, Yasodha AU - Natkunam Y AUID- ORCID: 0000-0002-9816-1018 AD - Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA. FAU - de Jong, Daphne AU - de Jong D AD - Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands. FAU - Farinha, Pedro AU - Farinha P AD - BC Cancer Centre for Lymphoid Cancer, University of British Columbia, Vancouver, Canada. FAU - Gaulard, Philippe AU - Gaulard P AD - Department of Pathology, Henri Mondor University Hospital, APHP, INSERM U955, Universite Paris-Est, Creteil, France. FAU - Klapper, Wolfram AU - Klapper W AUID- ORCID: 0000-0001-7208-4117 AD - Institute of Pathology, University of Schleswig-Holstein Kiel, Kiel, Germany. FAU - Rosenwald, Andreas AU - Rosenwald A AD - Comprehensive Cancer Center Mainfranken, Institute of Pathology, University of Wurzburg, Wurzburg, Germany. FAU - Sander, Birgitta AU - Sander B AD - Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden. FAU - Tooze, Reuben AU - Tooze R AD - Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds, UK. FAU - Advani, Ranjana AU - Advani R AD - Department of Medicine, Division of Oncology, Stanford University School of Medicine, Stanford, CA, USA. FAU - Burton, Catherine AU - Burton C AD - Haematological Malignancy Diagnostic Service, St James's University Hospital, Leeds, UK. FAU - Gribben, John G AU - Gribben JG AD - Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary, University of London, London, UK. FAU - Kersten, Marie-Jose AU - Kersten MJ AD - Department of Haematology, Cancer Center Amsterdam, Amsterdam UMC, Location University of Amsterdam, Amsterdam, the Netherlands. FAU - Kimby, Eva AU - Kimby E AD - Department of Medicine, Division of Hematology, Karolinska Institute, Stockholm, Sweden. FAU - Lenz, Georg AU - Lenz G AD - Medical Department A for Haematology, Oncology, and Pneumology, University Hospital Munster, Munster, Germany. FAU - Molina, Thierry AU - Molina T AD - Department of Pathology, Universite Paris Cite, AP-HP, Necker and Robert Debre Hospitals, Paris, France. FAU - Morschhauser, Franck AU - Morschhauser F AD - Department of Hematology, CHU Lille, Univ. Lille, ULR 7365 - GRITA - Groupe de Recherche sur les formes Injectables et les Technologies Associees, Lille, France. FAU - Scott, David AU - Scott D AD - BC Cancer Centre for Lymphoid Cancer, University of British Columbia, Vancouver, Canada. FAU - Sehn, Laurie AU - Sehn L AD - BC Cancer Centre for Lymphoid Cancer, University of British Columbia, Vancouver, Canada. FAU - Stevens, Wendy AU - Stevens W AD - Department of Hematology, Radboud UMC Nijmegen, Nijmegen, the Netherlands. FAU - Clear, Andrew AU - Clear A AD - Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary, University of London, London, UK. FAU - Baia, Maryse AU - Baia M AD - Department of Pathology, Henri Mondor University Hospital, APHP, INSERM U955, Universite Paris-Est, Creteil, France. FAU - Habi, Abdelmalek AU - Habi A AD - Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA. FAU - Elsensohn, Mad-Helenie AU - Elsensohn MH AD - Service de Biostatistique et Bioinformatique, Hospices Civils de Lyon, Pole Sante Publique, Lyon, France. FAU - Langlois-Jacques, Carole AU - Langlois-Jacques C AD - Service de Biostatistique et Bioinformatique, Hospices Civils de Lyon, Pole Sante Publique, Lyon, France. FAU - Maucort-Boulch, Delphine AU - Maucort-Boulch D AD - Service de Biostatistique et Bioinformatique, Hospices Civils de Lyon, Pole Sante Publique, Lyon, France. FAU - Calaminici, Maria AU - Calaminici M AD - Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary, University of London, London, UK. LA - eng PT - Journal Article DEP - 20230320 PL - England TA - Histopathology JT - Histopathology JID - 7704136 RN - 0 (Biomarkers) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (Proto-Oncogene Proteins c-bcl-6) SB - IM MH - Humans MH - Reproducibility of Results MH - *Lymphoma, Large B-Cell, Diffuse/diagnosis/genetics/pathology MH - Biomarkers MH - Proto-Oncogene Proteins c-myc/genetics MH - Proto-Oncogene Proteins c-bcl-2/genetics MH - Proto-Oncogene Proteins c-bcl-6/genetics MH - Gene Rearrangement OTO - NOTNLM OT - FISH OT - MYC-rearrangement OT - diffuse large B cell lymphoma OT - digital whole slide image OT - high-grade B cell lymphoma EDAT- 2023/03/01 06:00 MHDA- 2023/05/17 06:42 CRDT- 2023/02/28 00:11 PHST- 2023/01/16 00:00 [revised] PHST- 2022/08/09 00:00 [received] PHST- 2023/02/22 00:00 [accepted] PHST- 2023/05/17 06:42 [medline] PHST- 2023/03/01 06:00 [pubmed] PHST- 2023/02/28 00:11 [entrez] AID - 10.1111/his.14896 [doi] PST - ppublish SO - Histopathology. 2023 Jun;82(7):1105-1111. doi: 10.1111/his.14896. Epub 2023 Mar 20.