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Updated: Jun 24, 2026
09:02
Immunoglobulin Gene Sequence Analysis In Chronic Lymphocytic Leukemia: From Patient Material To Sequence Interpretation
Published on: November 26, 2018
BCL6: somatic mutations and expression in early-stage chronic lymphocytic leukemia
Eloisa Jantus Lewintre1, Cristina Reinoso Martín, Carlos García Ballesteros
1Molecular Haematology Laboratory, Prince Felipe Research Centre, Valencia, Spain. jantus_elo@gva.es
Leukemia & Lymphoma
|April 16, 2009
Summary
High BCL6 gene expression in early-stage chronic lymphocytic leukemia (CLL) patients correlates with a shorter time to treatment. BCL6 mutations did not impact this prognosis in CLL.
Area of Science:
- Hematology
- Molecular Biology
- Oncology
Background:
- The BCL6 gene plays a role in normal and cancerous B-lymphocytes.
- Understanding BCL6 in chronic lymphocytic leukemia (CLL) may reveal prognostic markers.
Purpose of the Study:
- To analyze BCL6 gene expression, mutations, and polymorphisms in early-stage CLL.
- To correlate these BCL6 variables with clinical outcomes, specifically treatment-free intervals.
Main Methods:
- Analysis of BCL6 and immunoglobulin heavy chain (IGHV) mutational status in 68 CLL samples.
- Quantification of BCL6 expression using real-time PCR and immunoblotting.
Main Results:
- 29% of CLL cases exhibited BCL6 somatic mutations, exclusively in IGHV-mutated cases.
- BCL6 expression levels varied among patients, independent of mutation status or polymorphisms.
- High BCL6 expression was significantly associated with a shorter treatment-free interval.
Conclusions:
- No correlation was found between BCL6 expression and its mutations or polymorphisms in early-stage CLL.
- Elevated BCL6 expression serves as a significant prognosticator for a worse clinical outcome in early-stage CLL patients.
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