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Copy Number Alteration and Mutational Profile of High-Grade B-Cell Lymphoma with and And/or Rearrangements, Diffuse Large B-Cell Lymphoma with -Rearrangement, and Diffuse Large B-Cell Lymphoma with -Cluster Amplification

Overview
Journal Cancers (Basel)
Publisher MDPI
Specialty Oncology
Date 2022 Dec 11
PMID 36497332
Authors
Affiliations
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Abstract

Diffuse large B-cell lymphoma (DLBCL) with alteration is classified as high-grade B-cell lymphoma with and and/or rearrangements (double/triple-hit lymphoma; DHL/THL), DLBCL with rearrangement (single-hit lymphoma; SHL) and DLBCL with -cluster amplification (MCAD). To elucidate the genetic features of DHL/THL, SHL, and MCAD, 23 lymphoma cases from Tokai University Hospital were analyzed. The series included 10 cases of DHL/THL, 10 cases of SHL and 3 cases of MCAD. The analysis used whole-genome copy number microarray analysis (OncoScan) and a custom-made next-generation sequencing (NGS) panel of 115 genes associated with aggressive B-cell lymphomas. The copy number alteration (CNA) profiles were similar between DHL/THL and SHL. MCAD had fewer CNAs than those of DHL/THL and SHL, except for +8q24. The NGS profile characterized DHL/THL with a higher "mutation burden" than SHL (17 vs. 10, = 0.010), and the most relevant genes for DHL/THL were and , and for SHL was . MCAD was characterized by mutations of , , , and , whereas was unmutated. In conclusion, DHL/THL, SHL, and MCAD have different profiles.

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