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J Cancer Res Clin Oncol. 2007 Jul;133(7):455-70. Epub 2007 Jan 18.

Non-Hodgkin lymphoma with t(14;18): clonal evolution patterns and cytogenetic-pathologic-clinical correlations.

Author information

1
Department of Medical Genetics, Rikshospitalet-Radiumhospitalet Medical Centre, Montebello, 0310 Oslo, Norway.

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.

PMID:
17235551
DOI:
10.1007/s00432-006-0188-3
[Indexed for MEDLINE]

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