Identification of ETV6-RUNX1-like and DUX4-rearranged subtypes in paediatric B-cell precursor acute lymphoblastic leukaemia

Fusion genes are potent driver mutations in cancer. In this study, we delineate the fusion gene landscape in a consecutive series of 195 paediatric B-cell precursor acute lymphoblastic leukaemia (BCP ALL). Using RNA sequencing, we find in-frame fusion genes in 127 (65%) cases, including 27 novel fus...

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Detalles Bibliográficos
Autores principales: Lilljebjörn, Henrik, Henningsson, Rasmus, Hyrenius-Wittsten, Axel, Olsson, Linda, Orsmark-Pietras, Christina, von Palffy, Sofia, Askmyr, Maria, Rissler, Marianne, Schrappe, Martin, Cario, Gunnar, Castor, Anders, Pronk, Cornelis J. H., Behrendtz, Mikael, Mitelman, Felix, Johansson, Bertil, Paulsson, Kajsa, Andersson, Anna K., Fontes, Magnus, Fioretos, Thoas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4897744/
https://www.ncbi.nlm.nih.gov/pubmed/27265895
http://dx.doi.org/10.1038/ncomms11790
Descripción
Sumario:Fusion genes are potent driver mutations in cancer. In this study, we delineate the fusion gene landscape in a consecutive series of 195 paediatric B-cell precursor acute lymphoblastic leukaemia (BCP ALL). Using RNA sequencing, we find in-frame fusion genes in 127 (65%) cases, including 27 novel fusions. We describe a subtype characterized by recurrent IGH-DUX4 or ERG-DUX4 fusions, representing 4% of cases, leading to overexpression of DUX4 and frequently co-occurring with intragenic ERG deletions. Furthermore, we identify a subtype characterized by an ETV6-RUNX1-like gene-expression profile and coexisting ETV6 and IKZF1 alterations. Thus, this study provides a detailed overview of fusion genes in paediatric BCP ALL and adds new pathogenetic insights, which may improve risk stratification and provide therapeutic options for this disease.

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