Aggressive NK-cell leukemia other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Molecular Findings
Immunophenotype
The immunophenotype of this disease is the same as extranodal NK/T-cell lymphoma, nasal type and is shown in the table below. CD11b and CD16 show variable expression.
| Status | Antigens |
| Positive | CD2, CD3ε, CD56, perforin, granzyme B, TIA-1 |
| Negative | CD57 |
Genetic Findings
Due to the myeloid lineage, clonal rearrangements of lymphoid (T cell receptor; B cell receptor) genes are not seen. The genome of the Epstein Barr virus (EBV) is detected in many cases, along with a variety of chromosomal abnormalities.[2] Wong KF, Zhang YM, Chan JK. "Cytogenetic abnormalities in natural killer cell lymphoma/leukaemia--is there a consistent pattern?" Leuk Lymphoma. 1999 Jul;34(3-4):241-50.