Recent Advances in Aggressive Large B-cell Lymphomas: A Comprehensive Review

Area of Science:

• Hematology
• Oncology
• Genetics

Background:

• Diffuse Large B-cell Lymphoma (DLBCL) exhibits significant heterogeneity, challenging its classification.
• Recent genome-wide studies reveal distinct molecular subsets in DLBCL linked to specific gene/pathway dysregulation.

Purpose of the Study:

• To provide an updated review of DLBCL, incorporating recent clinical, pathologic, and molecular findings.
• To highlight emerging DLBCL variants and challenging diagnostic entities.
• To discuss advances in genomic characterization for prognostication and targeted therapy.

Main Methods:

• Literature review of English-language publications in PubMed up to December 2015.
• Synthesis of information on DLBCL pathobiology, prognosis, and emerging variants.
• Focus on genomic characterization and its therapeutic implications.

Main Results:

• Identification of distinct molecular subsets within DLBCL.
• Emergence of new DLBCL variants (e.g., CD30 DLBCL, HIV-related, EBV DLBCL).
• Advances in understanding challenging entities like T-cell/histiocyte-rich large B-cell lymphoma.

Conclusions:

• DLBCL molecular complexity is increasingly understood through genetic and epigenetic studies.
• New variants and diagnostic challenges require updated clinical and pathologic insights.
• Genomic insights are crucial for improving DLBCL prognostication and developing tailored therapies.