학술논문
Spectrum of mutational signatures in T-cell lymphoma reveals a key role for UV radiation in cutaneous T-cell lymphoma.
Document Type
Article
Author
Jones, Christine L.; Degasperi, Andrea; Grandi, Vieri; Amarante, Tauanne D.; Genomics England Research Consortium; Ambrose, John C.; Arumugam, Prabhu; Baple, Emma L.; Bleda, Marta; Boardman-Pretty, Freya; Boissiere, Jeanne M.; Boustred, Christopher R.; Brittain, Helen; Caulfield, Mark J.; Chan, Georgia C.; Craig, Clare E. H.; Daugherty, Louise C.; de Burca, Anna; Devereau, Andrew; Elgar, Greg
Source
Subject
*GENETIC mutation
*LYMPHOMAS
*ULTRAVIOLET radiation
*T cells
*MYCOSES
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Language
ISSN
2045-2322
Abstract
T-cell non-Hodgkin's lymphomas develop following transformation of tissue resident T-cells. We performed a meta-analysis of whole exome sequencing data from 403 patients with eight subtypes of T-cell non-Hodgkin's lymphoma to identify mutational signatures and associated recurrent gene mutations. Signature 1, indicative of age-related deamination, was prevalent across all T-cell lymphomas, reflecting the derivation of these malignancies from memory T-cells. Adult T-cell leukemia-lymphoma was specifically associated with signature 17, which was found to correlate with the IRF4 K59R mutation that is exclusive to Adult T-cell leukemia-lymphoma. Signature 7, implicating UV exposure was uniquely identified in cutaneous T-cell lymphoma (CTCL), contributing 52% of the mutational burden in mycosis fungoides and 23% in Sezary syndrome. Importantly this UV signature was observed in CD4 + T-cells isolated from the blood of Sezary syndrome patients suggesting extensive re-circulation of these T-cells through skin and blood. Analysis of non-Hodgkin's T-cell lymphoma cases submitted to the national 100,000 WGS project confirmed that signature 7 was only identified in CTCL strongly implicating UV radiation in the pathogenesis of cutaneous T-cell lymphoma. [ABSTRACT FROM AUTHOR]