Burkitt-like lymphoma with 11q aberration: A germinal center derived lymphoma genetically unrelated to Burkitt lymphoma

Burkitt-like lymphoma with 11q aberration is characterized by pathological features and gene expression profile resembling Burkitt lymphoma but lack MYC rearrangement and carries an 11q-arm aberration with proximal gains and telomeric losses. Whether these lymphomas are a distinct category or a part...

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Bibliographic Details
Authors: González Farré, Blanca, Ramis Zaldívar, Joan Enric, Salmerón Villalobos, Julia, Balagué Ponz, Olga, Celis, Verónica, Verdú Amorós, Jaime, Nadeu Prat, Ferran, Sábado, Constantino, Ferrández, Antonio, Garrido, Marta, García Bragado, Federico, Maya, María Dolores de la, Vagace, José Manuel, Panizo, Carlos Manuel, Astigarraga, Itziar, Andrés, Mara, Jaffe, Elaine S., Campo Güerri, Elias, Salaverria Frigola, Itziar
Format: article
Status:Published version
Publication Date:2019
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/147224
Online Access:https://hdl.handle.net/2445/147224
Access Level:Open access
Keyword:Limfomes
Oncologia pediàtrica
Lymphomas
Tumors in children
Description
Summary:Burkitt-like lymphoma with 11q aberration is characterized by pathological features and gene expression profile resembling Burkitt lymphoma but lack MYC rearrangement and carries an 11q-arm aberration with proximal gains and telomeric losses. Whether these lymphomas are a distinct category or a particular variant of other recognized entities is controversial. To improve the understanding of Burkitt-like lymphoma with 11q aberration we have performed an analysis of copy number alterations and targeted sequencing of a large panel of B-cell lymphoma related genes in 11 cases. Most patients had localized nodal disease and a favourable outcome after therapy. Histologically, they were high grade B-cell lymphoma, not otherwise specified (8 cases), diffuse large B-cell lymphoma (2 cases) and only one was considered as atypical Burkitt lymphoma. All cases had a germinal center B-cell signature and phenotype with frequent LMO2 expression. Burkitt-like lymphoma with 11q aberration had frequent gains of 12q12-q21.1 and losses of 6q12.1-q21, and lacked common Burkitt lymphoma or diffuse large B-cell lymphoma alterations. Potential driver mutations were found in 27 genes, particularly involving BTG2, DDX3X, ETS1, EP300, and GNA13. However, ID3, TCF3, or CCND3 mutations were absent in all cases. These results suggest that Burkitt-like lymphoma with 11q aberration is a germinal center derived lymphoma closer to high grade B-cell lymphoma or diffuse large B-cell lymphoma rather than Burkitt lymphoma.Copyright © 2019, Ferrata Storti Foundation.

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