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Genomic abnormalities of TP53 define distinct risk groups of paediatric B-cell non-Hodgkin lymphoma

AM. Newman, M. Zaka, P. Zhou, AE. Blain, A. Erhorn, A. Barnard, RE. Crossland, S. Wilkinson, A. Enshaei, J. De Zordi, F. Harding, M. Taj, KM. Wood, D. Televantou, SD. Turner, GAA. Burke, CJ. Harrison, S. Bomken, CM. Bacon, V. Rand

. 2022 ; 36 (3) : 781-789. [pub] 20211021

Jazyk angličtina Země Velká Británie

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc22010892

Grantová podpora
MR/S021590/1 Medical Research Council - United Kingdom
Department of Health - United Kingdom

E-zdroje Online Plný text

NLK ProQuest Central od 2000-01-01 do Před 1 rokem
Open Access Digital Library od 1997-01-01
Nursing & Allied Health Database (ProQuest) od 2000-01-01 do Před 1 rokem
Health & Medicine (ProQuest) od 2000-01-01 do Před 1 rokem
Public Health Database (ProQuest) od 2000-01-01 do Před 1 rokem

Children with B-cell non-Hodgkin lymphoma (B-NHL) have an excellent chance of survival, however, current clinical risk stratification places as many as half of patients in a high-risk group receiving very intensive chemo-immunotherapy. TP53 alterations are associated with adverse outcome in many malignancies; however, whilst common in paediatric B-NHL, their utility as a risk classifier is unknown. We evaluated the clinical significance of TP53 abnormalities (mutations, deletion and/or copy number neutral loss of heterozygosity) in a large UK paediatric B-NHL cohort and determined their impact on survival. TP53 abnormalities were present in 54.7% of cases and were independently associated with a significantly inferior survival compared to those without a TP53 abnormality (PFS 70.0% vs 100%, p < 0.001, OS 78.0% vs 100%, p = 0.002). Moreover, amongst patients clinically defined as high-risk (stage III with high LDH or stage IV), those without a TP53 abnormality have superior survival compared to those with TP53 abnormalities (PFS 100% vs 55.6%, p = 0.005, OS 100% vs 66.7%, p = 0.019). Biallelic TP53 abnormalities were either maintained from the presentation or acquired at progression in all paired diagnosis/progression Burkitt lymphoma cases. TP53 abnormalities thus define clinical risk groups within paediatric B-NHL and offer a novel molecular risk stratifier, allowing more personalised treatment protocols.

Citace poskytuje Crossref.org

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