Predictive value of TP53 RNAscope ® in situ hybridization and p53 immunohistochemistry for TP53 mutational status in canine diffuse large B-cell lymphoma
mutations are associated with short survival and poor treatment response in canine diffuse large B-cell lymphoma (cDLBCL). The expression of by RNAscope hybridization and p53 by immunohistochemistry (IHC) was investigated in 37 formalin-fixed paraffin-embedded cDLBCL, to assess their correlation wit...
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Published in | The Veterinary quarterly Vol. 44; no. 1; pp. 1 - 9 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Taylor & Francis
01.12.2024
Taylor & Francis Group |
Subjects | |
Online Access | Get full text |
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Summary: | mutations are associated with short survival and poor treatment response in canine diffuse large B-cell lymphoma (cDLBCL). The expression of
by RNAscope
hybridization and p53 by immunohistochemistry (IHC) was investigated in 37 formalin-fixed paraffin-embedded cDLBCL, to assess their correlation with
mutational status and to evaluate their prognostic value.
was detected in all samples by RNAscope
. Ten of 37 (27%) cases expressed p53 by IHC, with highly variable percentage of positive cells.
RNAscope
scores and p53 IHC results were not correlated. The expression of
by RNAscope
was not influenced by its mutational status. Conversely, p53 IHC and
mutations were significantly associated. p53 IHC predicted
genetic mutations with high accuracy (97.3%). All
mutated samples carrying missense mutations exhibited p53 expression by IHC, while all wild-type cases and a single case with frameshift insertion were negative. In univariable analysis, p53 IHC was associated with shorter time to progression (TTP) and lymphoma-specific survival (LSS). Nevertheless, in multivariable analysis, only treatment significantly affected TTP and LSS. These findings suggest p53 IHC is an accurate, cost-effective tool for predicting
mutations in cDLBCL, unlike
RNAscope
, though its prognostic value requires further validation. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 These authors contributed equally to this work and share senior authorship. These authors contributed equally to this work and share first authorship. Supplemental data for this article can be accessed online at https://doi.org/10.1080/01652176.2024.2403453. |
ISSN: | 0165-2176 1875-5941 1875-5941 |
DOI: | 10.1080/01652176.2024.2403453 |