Erschienen in:
01.07.2007 | Original Paper
Non-Hodgkin lymphoma with t(14;18): clonal evolution patterns and cytogenetic–pathologic–clinical correlations
verfasst von:
Hege Vangstein Aamot, Emina Emilia Torlakovic, Marianne Brodtkorb Eide, Harald Holte, Sverre Heim
Erschienen in:
Journal of Cancer Research and Clinical Oncology
|
Ausgabe 7/2007
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Abstract
Purpose
The pattern and frequency of secondary chromosome abnormalities in t(14;18)-carrying non-Hodgkin lymphomas (NHL) were evaluated for differences in relation to histologic NHL subtype and patients’ outcome.
Methods
One hundred and forty-nine NHL patients with t(14;18) and complete cytogenetic, morphologic, and clinical information were selected.
Results
One hundred and twelve cases were follicular lymphoma (FL) and 37 were diffuse large B-cell lymphoma (DLBCL). One hundred and forty cases showed secondary aberrations (94%, median = 6.0). The most frequent were losses from chromosome arms 1p and 6q and +7 (26%). Loss from 1q, +7, and +12 were more frequent in DLBCL than in FL. Loss from 1p, Xp, and −16 were more frequent in FL grade 3 than in FL grades 1 and 2. Patients with <6.0 secondary cytogenetic aberrations had better prognosis than did those with a higher number of aberrations. Trisomy 21 was associated with shorter patient survival. FLIPI score, the number of secondary chromosomal aberrations, and +21 were all of independent prognostic value in Cox multivariate analysis. FL grade 1-3a patients that had received chemotherapy, showed a higher frequency of i(6p) and loss from 6q.
Conclusion
Secondary chromosomal aberrations showed some correlation with the morphologic subgroups of t(14;18)-NHL. Trisomy 21 and the presence of >6.0 secondary cytogenetic aberrations both correlated with shorter overall survival.