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BCL3 rearrangement and t(14;19)(q32;q13) in lymphoproliferative disorders
Author(s) -
Michaux Lucienne,
Mecucci Cristina,
Stul Michel,
Wlodarska Iwona,
Hernandez Jesus Maria,
Meeus Peter,
Michaux JeanLouis,
Scheiff JeanMarie,
Noël Henri,
Lodwagie Andries,
Criel Arnold,
Boogaerts Marc,
Orshoven Angeline Van,
Cassiman JeanJacques,
Van den Berghe Herman
Publication year - 1996
Publication title -
genes, chromosomes and cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.754
H-Index - 119
eISSN - 1098-2264
pISSN - 1045-2257
DOI - 10.1002/(sici)1098-2264(199601)15:1<38::aid-gcc6>3.0.co;2-5
Subject(s) - chromosomal translocation , locus (genetics) , biology , breakpoint , genetics , lymphoproliferative disorders , gene , trisomy , microbiology and biotechnology , chromosomal rearrangement , immunoglobulin heavy chain , chromosome , karyotype , lymphoma , immunology
Abstract Translocation t(14;19)(q32;q13) is a rare but recurrent abnormality in chronic lymphocytic leukemia and small cell lymphoma. It has been associated with rearrangements of the BCL3 gene, which is located at the breakpoint on chromosome 19 and is juxtaposed to the immunoglobulin heavy chain locus on chromosome 14 as a result of the translocation. This results in transcriptional up‐regulation of the BCL3 gene, which encodes a transcription coactivator, an 1‐κB protein, probably contributing to disease progression. We found, among 4,487 cytogenetic analyses of lymphoproliferative disorders, six cases with a t(14;19)(q32;q13), five of which showed the classical t(14;19)(q32;q13) and one of which showed a three‐way translocation t(7;19;14)(q21;q13;q32). The 14;19 translocation never occurred as a single abnormality; additional aberrations included trisomy 12 and several structural abnormalities. The cytogenetic examination was supplemented by molecular analysis using available probes for the BCL3 locus (pα1.4P and pα5B) in 1,150 of the 4,487 patients. Rearrangements of BCL3 involvement could only be confirmed using long‐range restriction mapping, indicating that, with the usually available BCL3 probes, rearrangements of this locus may be missed. Genes Chromosom Cancer 14:00–00 (1995). © 1996 Wiley‐Liss, Inc.