Non-coding recurrent mutations in chronic lymphocytic leukaemia

Xose S. Puente, Silvia Beà, Rafael Valdés-Mas, Neus Villamor, Jesús Gutiérrez-Abril, José I. Martín-Subero, Marta Munar, Carlota Rubio-Pérez, Pedro Jares, Marta Aymerich, Tycho Baumann, Renée Beekman, Elías Campo and Carlos López-Otín
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Elías Campo: Unitat de Hematología, Hospital Clínic, IDIBAPS, Universitat de Barcelona
Carlos López-Otín: Instituto Universitario de Oncología (IUOPA), Universidad de Oviedo

Nature, 2016, vol. 534, issue 7607, S11-S12

Abstract: Abstract Chronic lymphocytic leukaemia (CLL) is a frequent disease in which the genetic alterations determining the clinicobiological behaviour are not fully understood. Here we describe a comprehensive evaluation of the genomic landscape of 452 CLL cases and 54 patients with monoclonal B-lymphocytosis, a precursor disorder. We extend the number of CLL driver alterations, including changes in ZNF292, ZMYM3, ARID1A and PTPN11. We also identify novel recurrent mutations in non-coding regions, including the 3′ region of NOTCH1, which cause aberrant splicing events, increase NOTCH1 activity and result in a more aggressive disease. In addition, mutations in an enhancer located on chromosome 9p13 result in reduced expression of the B-cell-specific transcription factor PAX5. The accumulative number of driver alterations (0 to ≥4) discriminated between patients with differences in clinical behaviour. This study provides an integrated portrait of the CLL genomic landscape, identifies new recurrent driver mutations of the disease, and suggests clinical interventions that may improve the management of this neoplasia.

Date: 2016
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DOI: 10.1038/nature18910

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