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Significance of VH genes mutation status for prognosis of CLL patients
N Bilous1, I Abramenko, I Kryachok
1Scientific Research Centre for Radiation Medicine, AMS of Ukraine, Kyiv, Ukraine. nbilous@yahoo.com
Insights
Determining VH mutation status and CD38 expression in B-cell chronic lymphocytic leukemia (B-CLL) patients aids prognosis. Unmutated VH status correlates with poorer outcomes, while CD38 expression predicts treatment response.
Area of Science:
- Hematology
- Oncology
- Molecular Biology
Background:
- B-cell chronic lymphocytic leukemia (B-CLL) prognosis is complex.
- Identifying reliable prognostic markers is crucial for patient management.
Purpose of the Study:
- To evaluate the prognostic significance of VH mutation status in B-CLL.
- To compare VH mutation status with other prognostic markers, including CD38 expression.
Main Methods:
- VH mutation status assessed via RT-PCR and nucleotide sequencing in 43 B-CLL patients.
- CD38 expression analyzed using two-color FACS analysis.
- Statistical methods employed to test the prognostic influence of VH mutation rate and CD38 expression.
Main Results:
- Unmutated VH status in B-CLL patients correlated with more advanced disease, shorter time to second-line therapy, poorer fludarabine response, and worse survival.
- CD38 expression predicted fludarabine treatment response and time to progression in advanced stages.
- No correlation was found between CD38 expression and VH mutation status.
Conclusions:
- Simultaneous assessment of VH mutation status and CD38 expression can improve B-CLL prognosis prediction.
- These markers offer valuable insights for tailoring patient treatment strategies.
Aim:
The aim of this study was to evaluate significance of VH mutation status for prognosis of B-cell chronic lymphocytic leukemia (B-CLL) patients in comparison with other prognostic markers.
Materials And Methods:
The VH mutation status was evaluated in 43 B-CLL patients by RT-PCR amplification and nucleotide sequencing, and CD38 expression - by two-color FACS analysis. The prognostic influence of VH mutation rate and CD38 expression level was tested by different statistical methods.
Results:
The increasing number of advanced cases over the follow-up period, shorter median time from diagnosis to start of second line therapy, worse response to fludarabine treatment, poor survival for early stages B-CLL were found in unmutated versus mutated CLL patients. The significance of CD38 expression for CLL prognosis was revealed as predictor for response for fludarabine treatment and time of progression in advanced stages. The correlation between CD38 expression and VH mutation status was not found.
Conclusion:
Simultaneous determination of VH mutation status and CD38 expression may be helpful for prediction of CLL prognosis.
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