Cell-of-origin classification using the Hans and Lymph2Cx algorithms in primary cutaneous large B-cell lymphomas.

Cell-of-origin Hans algorithm Leg type Lymph2Cx algorithm Primary cutaneous diffuse large B-cell lymphoma Primary cutaneous follicle center lymphoma

Journal

Virchows Archiv : an international journal of pathology
ISSN: 1432-2307
Titre abrégé: Virchows Arch
Pays: Germany
ID NLM: 9423843

Informations de publication

Date de publication:
Mar 2022
Historique:
received: 24 08 2021
accepted: 28 12 2021
revised: 15 12 2021
pubmed: 15 1 2022
medline: 12 4 2022
entrez: 14 1 2022
Statut: ppublish

Résumé

Primary cutaneous diffuse large B-cell lymphoma, leg type (PCDLBCL-LT) and primary cutaneous follicle center lymphoma with a diffuse population of large cells (PCFCL-LC) are both primary cutaneous B-cell lymphomas with large-cell morphology (CLBCL) but with different clinical characteristics and behavior. In systemic diffuse large B-cell lymphoma, not otherwise specified (DLBCL-NOS), gene-expression profiling (GEP) revealed two molecular subgroups based on their cell-of-origin (COO) with prognostic significance: the germinal center B-cell-like (GCB) subtype and the activated B-cell-like (ABC) subtype. This study investigated whether COO classification is a useful tool for classification of CLBCL. For this retrospective study, 51 patients with PCDLBCL-LT and 15 patients with PCFCL-LC were analyzed for their COO according to the immunohistochemistry-based Hans algorithm and the NanoString GEP-based Lymph2Cx algorithm. In PCFCL-LC, all cases (100%) classified as GCB by both Hans and Lymph2Cx. In contrast, COO classification in PCDLBCL-LT was heterogeneous. Using Hans, 75% of the PCDLBCL-LT patients classified as non-GCB and 25% as GCB, while Lymph2Cx classified only 18% as ABC, 43% as unclassified/intermediate, and 39% as GCB. These COO subgroups did not differ in the expression of BCL2 and IgM, mutations in MYD88 and/or CD79B, loss of CDKN2A, or survival. In conclusion, PCFCL-LC uniformly classified as GCB, while PCDLBCL-LT classified along the COO spectrum of DLBCL-NOS using the Hans and Lymph2Cx algorithms. In contrast to DLBCL-NOS, the clinical relevance of COO classification in CLBCL using these algorithms has limitations and cannot be used as an alternative for the current multiparameter approach in differentiation of PCDLBCL-LT and PCFCL-LC.

Identifiants

pubmed: 35028710
doi: 10.1007/s00428-021-03265-5
pii: 10.1007/s00428-021-03265-5
pmc: PMC8990933
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

667-675

Informations de copyright

© 2022. The Author(s).

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Auteurs

Anne M R Schrader (AMR)

Department of Pathology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands. a.m.r.schrader@lumc.nl.

Ruben A L de Groen (RAL)

Department of Hematology, Leiden University Medical Center, Leiden, The Netherlands.

Rein Willemze (R)

Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands.

Patty M Jansen (PM)

Department of Pathology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands.

Koen D Quint (KD)

Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands.

Tom van Wezel (T)

Department of Pathology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands.

Ronald van Eijk (R)

Department of Pathology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands.

Dina Ruano (D)

Department of Pathology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands.

Cornelis P Tensen (CP)

Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands.

Esther Hauben (E)

Department of Pathology, University Hospitals Leuven, Leuven, Belgium.

F J S H Woei-A-Jin (FJSH)

Department of General Medical Oncology, University Hospitals Leuven, Leuven, Belgium.

Anne M Busschots (AM)

Department of Dermatology, University Hospitals Leuven, Leuven, Belgium.

Anke van den Berg (A)

Department of Pathology, University Medical Center Groningen, Groningen, The Netherlands.

Arjan Diepstra (A)

Department of Pathology, University Medical Center Groningen, Groningen, The Netherlands.

Maarten H Vermeer (MH)

Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands.

Joost S P Vermaat (JSP)

Department of Hematology, Leiden University Medical Center, Leiden, The Netherlands.

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