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See detailAcute myeloid leukaemia with 8p11 (MYST3) rearrangement : an integrated cytologic, cytogenetic and molecular study by the groupe francophone de cytogénétique hématologique
Gervais, C.; Murati, A.; Helias, C. et al

in Leukemia : Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K (2008), 22(8), 1567-1575

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See detailPAX5/IGH rearrangement is a recurrent finding in a subset of aggressive B-NHL with complex chromosomal rearrangements
Poppe, B.; De Paepe, P.; Michaux, L. et al

in Genes Chromosomes & Cancer (2005), 44(2), 218-223

We present an extensive characterization of 10 B-cell lymphomas with a t(9; 14)(p I 3;q32). The presence of the PAX5/IGH gene rearrangement was demonstrated by fluorescence in situ hybridization (FISH ... [more ▼]

We present an extensive characterization of 10 B-cell lymphomas with a t(9; 14)(p I 3;q32). The presence of the PAX5/IGH gene rearrangement was demonstrated by fluorescence in situ hybridization (FISH) using a validated probe set, whereas complex karyotypic changes were reassessed by multiplex-FISH (M-FISH). Pathologic and clinical review revealed the presence of this rearrangement in 4 histiocyte-rich, T-cell-rich B-cell lymphomas (HRTR-BCLs) and 2 posttransplantation diffuse large B-cell lymphomas (PTLD-DLBCLs). In contrast to initial observations describing this translocation in lymphoplasmacytic lymphoma (LPL) and LPL-derived large B-cell lymphoma, our data showed a wide morphologic and clinical spectrum associated with the PAX5/IGH rearrangement, pointing to an association between this aberration and a subset of de novo DLBCLs presenting with advanced disease and adverse prognosis. In addition, the recurrent incidence of this rearrangement in both HRTR-BCL (4 cases) and PTLD-DLBCL (2 cases) was previously unrecognized and is intriguing. (c) 2005 Wiley-Liss, Inc. [less ▲]

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See detailt(5;14)/HOX11L2-positive T-cell acute lymphoblastic leukemia. A collaborative study of the Groupe Francais de Cytogenetique Hematologique (GFCH)
Berger, R.; Dastugue, N.; Busson, M. et al

in Leukemia (2003), 17(9), 1851-1857

To accurately estimate the incidence of HOX11L2 expression, and determine the associated cytogenetic features, in T-cell acute lymphoblastic leukemia (T-ALL), the Groupe Francais de Cytogenetique ... [more ▼]

To accurately estimate the incidence of HOX11L2 expression, and determine the associated cytogenetic features, in T-cell acute lymphoblastic leukemia (T-ALL), the Groupe Francais de Cytogenetique Hematologique (GFCH) carried out a retrospective study of both childhood and adult patients. In total, 364 patients were included ( 211 children less than or equal to15 years and 153 adults), and 67 ( 18.5%) [ 47 children ( 22.4%) and 20 adults (13.1%)] were shown to either harbor the t(5; 14) q35; q32) translocation or express the HOX11L2 gene or both. Most of the common hematological parameters did not show significant differences within positive and negative populations, whereas the incidence of CD1a+/CD10+ and cytoplasmic CD3+ patients was significantly higher in positive than in negative children. Out of the 63 positive patients investigated by conventional cytogenetics, 32 exhibited normal karyotype, whereas the others 31 showed clonal chromosome abnormalities, which did not include classical T-ALL specific translocations. Involvement of the RANBP17/HOX11L2 locus was ascertained by fluorescence in situ hybridization in six variant or alternative (three-way translocation or cytogenetic partner other than 14q32) translocations out of the 223 patients. Our results also show that HOX11L2 expression essentially occurs as a result of a 5q35 rearrangement, but is not associated with another identified T-ALL specific recurrent genetic abnormality, such as SIL-TAL fusion or HOX11 expression. [less ▲]

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