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Disease-specific U1 spliceosomal RNA mutations in mature B-cell neoplasms

Recurrent mutations in the third base of U1 spliceosomal RNA responsible for marked splicing and expression abnormalities have been described in chronic lymphocytic leukemia (CLL) and some solid tumors. However, the clinical significance of these mutations in large and independent CLL cohorts as wel...

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Main Authors: Nadeu, Ferran (Author) , Shuai, Shimin (Author) , Clot, Guillem (Author) , Hilton, Laura K. (Author) , Diaz-Navarro, Ander (Author) , Martín, Silvia (Author) , Royo, Romina (Author) , Baumann, Tycho (Author) , Kulis, Marta (Author) , López-Oreja, Irene (Author) , Cossio, Manuel (Author) , Lu, Junyan (Author) , Ljungström, Viktor (Author) , Young, Emma (Author) , Plevova, Karla (Author) , Knisbacher, Binyamin A. (Author) , Lin, Ziao (Author) , Hahn, Cynthia K. (Author) , Bousquets, Pablo (Author) , Alcoceba, Miguel (Author) , González, Marcos (Author) , Colado, Enrique (Author) , Payer, Ángel R. (Author) , Aymerich, Marta (Author) , Terol, María J. (Author) , Rivas-Delgado, Alfredo (Author) , Enjuanes, Anna (Author) , Ruiz-Gaspà, Sílvia (Author) , Chatzikonstantinou, Thomas (Author) , Hägerstrand, Daniel (Author) , Jylhä, Cecilia (Author) , Skaftason, Aron (Author) , Mansouri, Larry (Author) , Stranska, Kamila (Author) , Doubek, Michael (Author) , van Gastel-Mol, Ellen J. (Author) , Davis, Zadie (Author) , Walewska, Renata (Author) , Scarfò, Lydia (Author) , Trentin, Livio (Author) , Visentin, Andrea (Author) , Parikh, Sameer A. (Author) , Rabe, Kari G. (Author) , Moia, Riccardo (Author) , Armand, Marine (Author) , Rossi, Davide (Author) , Davi, Frederic (Author) , Gaidano, Gianluca (Author) , Kay, Neil E. (Author) , Shanafelt, Tait D. (Author) , Ghia, Paolo (Author) , Oscier, David (Author) , Langerak, Anton W. (Author) , Beà, Sílvia (Author) , López-Guillermo, Armando (Author) , Neuberg, Donna (Author) , Wu, Catherine J. (Author) , Getz, Gad (Author) , Pospisilova, Sarka (Author) , Stamatopoulos, Kostas (Author) , Rosenquist, Richard (Author) , Huber, Wolfgang (Author) , Zenz, Thorsten (Author) , Colomer, Dolors (Author) , Martín-Subero, José I. (Author) , Delgado, Julio (Author) , Morin, Ryan D. (Author) , Stein, Lincoln D. (Author) , Puente, Xose S. (Author) , Campo, Elías (Author)
Format: Article (Journal)
Language:English
Published: 30 June 2025
In: Leukemia
Year: 2025, Volume: 39, Issue: 9, Pages: 2076-2086
ISSN:1476-5551
DOI:10.1038/s41375-025-02667-7
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1038/s41375-025-02667-7
Verlag, kostenfrei, Volltext: https://www.nature.com/articles/s41375-025-02667-7
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Author Notes:Ferran Nadeu, Shimin Shuai, Guillem Clot, Laura K. Hilton, Ander Diaz-Navarro, Silvia Martín, Romina Royo, Tycho Baumann, Marta Kulis, Irene López-Oreja, Manuel Cossio, Junyan Lu, Viktor Ljungström, Emma Young, Karla Plevova, Binyamin A. Knisbacher, Ziao Lin, Cynthia K. Hahn, Pablo Bousquets, Miguel Alcoceba, Marcos González, Enrique Colado, Ángel R. Payer, Marta Aymerich, María J. Terol, Alfredo Rivas-Delgado, Anna Enjuanes, Sílvia Ruiz-Gaspà, Thomas Chatzikonstantinou, Daniel Hägerstrand, Cecilia Jylhä, Aron Skaftason, Larry Mansouri, Kamila Stranska, Michael Doubek, Ellen J. van Gastel-Mol, Zadie Davis, Renata Walewska, Lydia Scarfò, Livio Trentin, Andrea Visentin, Sameer A. Parikh, Kari G. Rabe, Riccardo Moia, Marine Armand, Davide Rossi, Frederic Davi, Gianluca Gaidano, Neil E. Kay, Tait D. Shanafelt, Paolo Ghia, David Oscier, Anton W. Langerak, Sílvia Beà, Armando López-Guillermo, Donna Neuberg, Catherine J. Wu, Gad Getz, Sarka Pospisilova, Kostas Stamatopoulos, Richard Rosenquist, Wolfgang Huber, Thorsten Zenz, Dolors Colomer, José I. Martín-Subero, Julio Delgado, Ryan D. Morin, Lincoln D. Stein, Xose S. Puente and Elías Campo
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Summary:Recurrent mutations in the third base of U1 spliceosomal RNA responsible for marked splicing and expression abnormalities have been described in chronic lymphocytic leukemia (CLL) and some solid tumors. However, the clinical significance of these mutations in large and independent CLL cohorts as well as their presence in other B-cell neoplasms is unknown. Here we characterized U1 mutations in 1670 CLL and 363 mature B-cell lymphomas. We confirmed that the g.3A>C U1 mutation is found in 3.5% of CLL, which conferred rapid disease progression independently of the main biological and clinical prognostic markers of the disease. Additionally, a recurrent g.9C>T mutation was found in 1.5% of CLL causing downstream splicing alterations and associated with adverse prognosis. We also identified a g.4C>T mutation in 10% of diffuse large B-cell lymphomas of the germinal center subtype and a g.7A>G mutation in 30% of EBV-negative Burkitt lymphomas, both of which altered the splicing pattern of multiple genes. This study reveals novel, recurrent, and tumor-specific U1 mutations in mature B-cell neoplasms with biological and prognostic implications, thus establishing U1 as a novel pan-B-cell malignancy driver gene.
Item Description:Veröffentlicht: 30. June 2025
Gesehen am 13.11.2025
Physical Description:Online Resource
ISSN:1476-5551
DOI:10.1038/s41375-025-02667-7

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