Related Experiment Video
Updated: Aug 8, 2026
VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma
Published on: December 28, 2015
A single clonal origin of neoplastic B cells in a patient with CD5+B-intermediate lymphocytic lymphoma terminating in
Insights
This study investigated a rare lymphoma case, finding both tumors originated from a single B cell clone. This offers insights into CD5+ B-lymphocyte differentiation pathways.
Area of Science:
- Hematology
- Oncology
- Immunology
Background:
- Investigating the clonal origin of CD5+ B-cell lymphomas is crucial for understanding their pathogenesis.
- Plasmacytoid differentiation in intermediate lymphocytic lymphoma is a rare but significant event.
Observation:
- Analyzed immunophenotype and immunoglobulin gene rearrangements in lymph node biopsies.
- Both neoplasms exhibited the same kappa-light chain immunoglobulin type.
- Identical immunoglobulin heavy and kappa-light chain gene rearrangements were detected in both neoplasms.
Findings:
- The study suggests that both CD5+ B-intermediate lymphocytic lymphoma and its plasmacytoid differentiation derive from a single clonal B cell.
- Demonstrated shared molecular markers confirming a uniclonal origin.
Implications:
- This case provides valuable insights into the B-cell differentiation pathway, particularly in CD5+ lymphomas.
- Understanding clonal evolution in lymphomas can inform diagnostic and therapeutic strategies.
- Highlights the potential for B-cell lymphomas to undergo divergent differentiation from a common progenitor.
Abstract:
To investigate the clonal origin of a case of CD5+B-intermediate lymphocytic lymphoma terminating in plasmacytoid differentiation, we analyzed the immunophenotype and immunoglobulin gene rearrangements in the first and second lymph nodes from which biopsy specimens were taken. Immunohistochemical study revealed that both neoplasms have the same immunoglobulin light chain type (kappa-light chain). Immunoglobulin gene analysis using the Southern blot method revealed the identical immunoglobulin heavy chain and kappa-light chain gene rearrangements in both neoplasms. These findings suggest that both neoplasms are derived from a single clonal B cell. The present case may help a further understanding of CD5+B-lymphocyte differentiation pathway.
