1. CD70 and PD‐L1 (CD274) co‐expression predicts poor clinical outcomes in patients with pleural mesothelioma
- Author
-
Shingo Inaguma, Akane Ueki, Jerzy Lasota, Masayuki Komura, Asraful Nahar Sheema, Piotr Czapiewski, Renata Langfort, Janusz Rys, Joanna Szpor, Piotr Waloszczyk, Krzysztof Okoń, Wojciech Biernat, David S Schrump, Raffit Hassan, Markku Miettinen, and Satoru Takahashi
- Subjects
pleural mesothelioma ,immunohistochemistry ,CD70 ,PD‐L1 (CD274) ,migration ,invasion ,Pathology ,RB1-214 - Abstract
Abstract Diffuse pleural mesothelioma (PM) is a highly aggressive tumour typically associated with short survival. Recently, the effectiveness of first‐line immune checkpoint inhibitors in patients with unresectable PM was reported. CD70–CD27 signalling plays a co‐stimulatory role in promoting T cell expansion and differentiation through the nuclear factor κB (NF‐κB) pathway. Conversely, the PD‐L1 (CD274)–PD‐1 (PDCD1) pathway is crucial for the modulation of immune responses in normal conditions. Nevertheless, pathological activation of both the CD70–CD27 and PD‐L1–PD‐1 pathways by aberrantly expressed CD70 and PD‐L1 participates in the immune evasion of tumour cells. In this study, 171 well‐characterised PMs including epithelioid (n = 144), biphasic (n = 15), and sarcomatoid (n = 12) histotypes were evaluated immunohistochemically for CD70, PD‐L1, and immune cell markers such as CD3, CD4, CD8, CD56, PD‐1, FOXP3, CD68, and CD163. Eight percent (14/171) of mesotheliomas simultaneously expressed CD70 and PD‐L1 on the tumour cell membrane. PMs co‐expressing CD70 and PD‐L1 contained significantly higher numbers of CD8+ (p = 0.0016), FOXP3+ (p = 0.00075), and CD163+ (p = 0.0011) immune cells within their microenvironments. Overall survival was significantly decreased in the cohort of patients with PM co‐expressing CD70 and PD‐L1 (p
- Published
- 2023
- Full Text
- View/download PDF