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Trisomy 8 in B-cell chronic lymphocytic leukemia
Olga Pozdnyakova1, Dariusz Stachurski, Lloyd Hutchinson
1Department of Pathology, UMASS Memorial Medical Center, Biotech Three, One Innovation Drive, Worcester, MA 01605, USA.
Cancer Genetics and Cytogenetics
|May 14, 2008
Summary
Trisomy 8 in patients with B-cell chronic lymphocytic leukemia (B-CLL) may indicate myelodysplastic syndrome, not B-CLL progression. This finding is crucial for accurate diagnosis and treatment of myeloid malignancies in CLL patients.
Area of Science:
- Hematology
- Oncology
- Cytogenetics
Background:
- The association between trisomy 8 and myeloid malignancies is established.
- B-cell chronic lymphocytic leukemia (B-CLL) is a common lymphoid malignancy.
- Distinguishing between B-CLL progression and secondary myeloid disorders is clinically important.
Observation:
- Two patients with a history of B-CLL and bone marrow involvement were studied.
- Both patients exhibited a trisomy 8 clone in their bone marrow.
- Advanced imaging combining histology and fluorescence in situ hybridization (FISH) was utilized.
Findings:
- The trisomy 8 clone was confirmed to be restricted to the myeloid lineage in both patients.
- This myeloid-specific trisomy 8 clone was observed alongside classic B-CLL cytogenetic abnormalities in one patient.
- The findings suggest the emergence of a distinct myeloid clone.
Implications:
- The presence of trisomy 8 in B-CLL patients may signify the development of myelodysplastic syndrome (MDS).
- This could be de novo MDS or therapy-related MDS.
- Accurate identification of the clone's lineage is critical for appropriate patient management and treatment strategies.
