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Published in: International Journal of Clinical Oncology 11/2019

01-11-2019 | Endometrial Cancer | Original Article

The impact of programmed cell death-ligand 1 (PD-L1) and CD8 expression in grade 3 endometrial carcinomas

Authors: Stylianos Vagios, Petros Yiannou, Elpida Giannikaki, Triada Doulgeraki, Christos Papadimitriou, Alexandros Rodolakis, Afroditi Nonni, Athanassios Vlachos, Kitty Pavlakis

Published in: International Journal of Clinical Oncology | Issue 11/2019

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Abstract

Background

To evaluate the expression of programmed cell death-ligand 1 (PD-L1) and CD8 in high-grade endometrial carcinomas and relate it to several clinicopathological parameters.

Methods

One hundred and one (101) patients with high-grade endometrial carcinomas who were completely surgically staged were included in this study. PD-L1 and CD8 + expression was evaluated by immunohistochemistry.

Results

In our cohort, 47 women (46.5%) had endometrioid carcinomas and 54 patients (53.5%) were diagnosed with non-endometrioid cancers. In endometrioid carcinomas, there was a significantly higher rate of positivity for PD-L1 expression (p = 0.042) and of intraepithelial CD8 + cell counts (p = 0.004) as opposed to non-endometrioid cancers. There were no significant relationships with any of the other clinicopathological features under study. Univariate and multivariate analysis revealed that only high intraepithelial CD8 + counts (p = 0.01) was associated with longer progression-free survival. Tumors positive for PD-L1 and high intraepithelial CD8 expression were mainly of endometrioid histology, whilst PD-L1-positive/CD8 low and PD-L1-negative/CD8 low tumors were mostly non-endometrioid carcinomas (p = 0.01). PD-L1 negative/CD8 high tumors had the longest progression-free survival (p = 0.032).

Conclusions

In grade 3 endometrial carcinomas, both of endometrioid and non-endometrioid type, high intraepithelial CD8 + counts represent an independent favorable prognostic factor and when related to PD-L1-negative tumors, a longer progression-free survival can be predicted. Immunotherapy could probably be considered for PD-L1-positive/CD8 + high tumors, which were mostly of endometrioid histology.
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Metadata
Title
The impact of programmed cell death-ligand 1 (PD-L1) and CD8 expression in grade 3 endometrial carcinomas
Authors
Stylianos Vagios
Petros Yiannou
Elpida Giannikaki
Triada Doulgeraki
Christos Papadimitriou
Alexandros Rodolakis
Afroditi Nonni
Athanassios Vlachos
Kitty Pavlakis
Publication date
01-11-2019
Publisher
Springer Singapore
Published in
International Journal of Clinical Oncology / Issue 11/2019
Print ISSN: 1341-9625
Electronic ISSN: 1437-7772
DOI
https://doi.org/10.1007/s10147-019-01484-0

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