Article (Scientific journals)
PRDM16 (1p36) translocations define a distinct entity of myeloid malignancies with poor prognosis but may also occur in lymphoid malignancies.
Duhoux, Francois P; Ameye, Genevieve; Montano-Almendras, Carmen P et al.
2012In British Journal of Haematology, 156 (1), p. 76-88
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Abstract :
[en] The PRDM16 (1p36) gene is rearranged in acute myeloid leukaemia (AML) and myelodysplastic syndrome (MDS) with t(1;3)(p36;q21), sharing characteristics with AML and MDS with MECOM (3q26.2) translocations. We used fluorescence in situ hybridization to study 39 haematological malignancies with translocations involving PRDM16 to assess the precise breakpoint on 1p36 and the identity of the partner locus. Reverse-transcription polymerase chain reaction (PCR) was performed in selected cases in order to confirm the partner locus. PRDM16 expression studies were performed on bone marrow samples of patients, normal controls and CD34(+) cells using TaqMan real-time quantitative PCR. PRDM16 was rearranged with the RPN1 (3q21) locus in 30 cases and with other loci in nine cases. The diagnosis was AML or MDS in most cases, except for two cases of lymphoid proliferation. We identified novel translocation partners of PRDM16, including the transcription factors ETV6 and IKZF1. Translocations involving PRDM16 lead to its overexpression irrespective of the consequence of the rearrangement (fusion gene or promoter swap). Survival data suggest that patients with AML/MDS and PRDM16 translocations have a poor prognosis despite a simple karyotype and a median age of 65 years. There seems to be an over-representation of late-onset therapy-related myeloid malignancies.
Disciplines :
Genetics & genetic processes
Author, co-author :
Duhoux, Francois P
Ameye, Genevieve
Montano-Almendras, Carmen P
Bahloula, Khadija
Mozziconacci, Marie J
Laibe, Sophy
Wlodarska, Iwona
Michaux, Lucienne
Talmant, Pascaline
Richebourg, Steven
Lippert, Eric
Speleman, Frank
HERENS, Christian ;  Centre Hospitalier Universitaire de Liège - CHU > Génétique
Struski, Stephanie
Raynaud, Sophie
Auger, Nathalie
Nadal, Nathalie
Rack, Katrina
Mugneret, Francine
Tigaud, Isabelle
Lafage, Marina
Taviaux, Sylvie
Roche-Lestienne, Catherine
Latinne, Dominique ;  Université de Liège - ULiège > Département des sciences cliniques > Département des sciences cliniques
Libouton, Jeanne M
Demoulin, Jean*-Baptiste
Poirel, Helene A
More authors (17 more) Less
Language :
English
Title :
PRDM16 (1p36) translocations define a distinct entity of myeloid malignancies with poor prognosis but may also occur in lymphoid malignancies.
Publication date :
2012
Journal title :
British Journal of Haematology
ISSN :
0007-1048
eISSN :
1365-2141
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
156
Issue :
1
Pages :
76-88
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
(c) 2011 Blackwell Publishing Ltd.
Available on ORBi :
since 22 February 2012

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