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Updated: Aug 14, 2026

Immunoglobulin Gene Sequence Analysis In Chronic Lymphocytic Leukemia: From Patient Material To Sequence Interpretation
Published on: November 26, 2018
Chronic lymphocytic leukaemia: a review of the immuno-architecture
1Department of Pathology and Laboratory Medicine, Groningen University Medical Centre, The Netherlands. s.rosati@acggn.umcg.nl
Insights
Immunohistochemistry offers insights into B-cell chronic lymphocytic leukemia (B-CLL) by examining tissue architecture and specific markers like ZAP-70 kinase. This approach complements flow cytometry for a deeper understanding of the disease biology.
Area of Science:
- Hematology
- Oncology
- Immunology
Background:
- B-cell chronic lymphocytic leukemia (B-CLL) immunophenotyping typically uses flow cytometry on cell suspensions.
- Immunohistochemistry on tissue sections is less common but reveals tissue immuno-architecture and disease biology insights.
Purpose of the Study:
- To review the utility of immunohistochemical analysis in B-cell chronic lymphocytic leukemia.
- To focus on specific markers and cellular events relevant to B-CLL pathogenesis.
Main Methods:
- Review of existing literature on immunohistochemical findings in B-CLL.
- Focus on immuno-architecture, CD23, MUM1/IRF-4, cyclin D1, tyrosine phosphorylation, and ZAP-70 kinase detection.
Main Results:
- Immunohistochemistry provides a spatial understanding of B-CLL proliferation centers.
- Expression patterns of CD23, MUM1/IRF-4, cyclin D1, and ZAP-70 kinase offer functional insights.
- Tyrosine phosphorylation status can be assessed via immunohistochemistry.
Conclusions:
- Immunohistochemistry is a valuable tool for understanding B-CLL immuno-architecture and disease mechanisms.
- Interpreting immunohistochemical findings functionally enhances our knowledge of B-CLL biology.
- This approach complements flow cytometry for comprehensive B-CLL analysis.
Abstract:
Immunophenotyping of B cell chronic lymphocytic leukaemia (B-CLL) is usually performed by flow cytometry on cell suspensions obtained from peripheral blood, bone marrow or biopsied tissue. Immunohistochemical analysis on routine sections is less commonly performed; however, this approach allows the pathologist and the researcher to appreciate the immuno-architecture of the involved tissues and to gain insight into some of the events that influence the biology of the disease. In this review the authors focus on the following issues: immuno-architecture of the proliferation centres, expression of CD23, MUM1/IRF-4 and cyclin D1, tyrosine phosphorylation and detection of the ZAP-70 kinase. Whenever possible, an attempt is made to interpret the immunohistochemical findings from a functional point of view.
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