A workshop held by the "Groupe Frangais de Cytogenetique Hematologique" has identified a t ( I 0 I I)(p I 3-1 4;q 14-2 I) in four acute lyrnphoblastic leukemias of T-cell lineage. The immunophenotypes were consistent with immature thymocytes. This translocation is therefore a new candidate for a rec
t(14;19)(q32;q13): A recurrent translocation in B-cell precursor acute lymphoblastic leukemia
β Scribed by Hazel M. Robinson; Kerry E. Taylor; G. Reza Jalali; Kan Luk Cheung; Christine J. Harrison; Anthony V. Moorman
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 746 KB
- Volume
- 39
- Category
- Article
- ISSN
- 1045-2257
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β¦ Synopsis
The recurrent t(14;19)(q32;q13) translocation associated with chronic B-cell lymphoproliferative disorders, such as atypical chronic lymphocytic leukemia, results in the juxtaposition of the IGH@ and BCL3 genes and subsequent overexpression of BCL3. We report six patients with B-cell precursor acute lymphoblastic leukemia who have a cytogenetically identical translocation with different breakpoints at the molecular level. Fluorescence in situ hybridization with locus-specific probes confirmed the involvement of the IGH@ gene but showed that the breakpoint on 19q13 lay outside the region documented in t(14;19)(q32;q13)-positive chronic lymphocytic leukemia. This newly described translocation constitutes a distinct cytogenetic subgroup that is confined to older children and younger adults with B-cell precursor acute lymphoblastic leukemia.
π SIMILAR VOLUMES
The inv( I4)(q I lq32) is a non-random chromosomal aberration which has been associated with a variety of T-cell malignancies. W e have studied a case of inv( I4)(q I I q32) that is unique in several respects. First, the inversion, which is expressed at the rnRNA level, occurred in the context of a
## Abstract The t(14;19)(q32;q13) is a recurrent chromosomal translocation reported in a variety of Bβcell leukemias and lymphomas, including chronic lymphocytic leukemia (CLL). CLL cases associated with t(14;19) often have atypical morphologic and immunophenotypic features and unmutated immunoglob
The t( 1014)(q24;ql I) is observed in the leukemia cells of 5-10% of cases of T-cell acute lymphoblastic leukemia (T-ALL). Recently, molecular analyses of a number of these translocations revealed simple reciprocal translocations between the T-cell receptor delta chain gene (TCRD) and a region of IO