Journal
CURRENT OPINION IN HEMATOLOGY
Volume 20, Issue 4, Pages 336-344Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MOH.0b013e3283623d7f
Keywords
diffuse large B-cell lymphoma; epigenetic modifiers; genomic analysis; germinal center; immune escape
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Funding
- NCI [RO1 CA172492, CA164152]
- Lymphoma Research Foundation
- Leukemia and Lymphoma Society
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Purpose of reviewDiffuse large B-cell lymphoma (DLBCL) is an aggressive disease featuring heterogeneous genetic, phenotypic, and clinical characteristics. Understanding the basis for this heterogeneity represents a critical step toward further progress in the management of this disease, which remains a clinical challenge in approximately one-third of patients. This review summarizes current knowledge about the molecular pathogenesis of DLBCL, and describes how recent advances in the genomic characterization of this cancer have provided new insights into its biology, revealing several potential targets for improved diagnosis and therapy.Recent findingsIn the past few years, the development of high-resolution technologies has provided significant help in identifying genetic lesions and/or disrupted signaling pathways that are required for DLBCL initiation and progression. These studies uncovered the involvement of cellular programs that had not been previously appreciated, including histone/chromatin remodeling and immune recognition. Alterations in these pathways could favor epigenetic reprogramming and escape from cellular immunity.SummaryThe identification of genetic alterations that contribute to the malignant transformation of a B cell into a DLBCL is helping to better understand the biology of this disease and to identify critical nodes driving tumor progression or resistance to therapy. The rapid pace at which these discoveries are taking place is poised to have significant impact for patient stratification based on molecular predictors and for the development of rational targeted therapies.
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