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Published in: Gastric Cancer 2/2021

01-03-2021 | Gastric Cancer | Original Article

Expression of the immune checkpoint molecule V-set immunoglobulin domain-containing 4 is associated with poor prognosis in patients with advanced gastric cancer

Authors: So-Woon Kim, Jin Roh, Hye Seung Lee, Min-Hee Ryu, Young-Soo Park, Chan-Sik Park

Published in: Gastric Cancer | Issue 2/2021

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Abstract

Background

Recent clinical studies on immune checkpoint (IC) inhibitors in the context of advanced gastric cancer (AGC) have failed to show significant survival benefits but have suggested the possible role of IC inhibitors in anti-AGC immunity. Considering the low efficacy of targeted drugs in AGC, there is an urgent need for the discovery of new targets for the development of immunotherapeutics and prognostic markers for patient selection. This study aimed to investigate the expression of a new IC molecule, V-set Ig domain-containing 4 (VSIG4), and its clinical significance in AGC and other major cancers.

Methods

We analyzed the expression of VSIG4 and its correlation with survival in various carcinomas, including 882 surgically resected samples from patients with stage II–III AGC (two academic hospitals).

Results

VSIG4 positivity in AGC was significantly associated with overall survival (OS; Hazard ratio (HR) = 2.661, 95% confidence interval [CI] = 2.012–3.519, P < 0.001) and event-free survival (HR = 2.8, 95% CI = 2.18–3.72, P < 0.001). These findings were successfully validated in independent cohorts. VSIG4 expression was also significantly correlated with low intratumoral CD8 + T-cell infiltration (CD8i) (P = 0.029) and high Foxp3 + /CD8i ratio (P = 0.026), which is consistent with the previously reported immunological function of VSIG4. However, VSIG4 expression was not associated with survival in other cancers (colon, P = 0.459; lung, P = 0.275; kidney, P = 0.121; breast, P = 0.147).

Conclusion

Our results suggest that VSIG4 is an independent prognostic factor in AGC and also implies that VSIG4 is a second-tier IC molecule in AGC, thus, providing an important basis for the development of gastric cancer-specific immunotherapeutics.
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Metadata
Title
Expression of the immune checkpoint molecule V-set immunoglobulin domain-containing 4 is associated with poor prognosis in patients with advanced gastric cancer
Authors
So-Woon Kim
Jin Roh
Hye Seung Lee
Min-Hee Ryu
Young-Soo Park
Chan-Sik Park
Publication date
01-03-2021
Publisher
Springer Singapore
Published in
Gastric Cancer / Issue 2/2021
Print ISSN: 1436-3291
Electronic ISSN: 1436-3305
DOI
https://doi.org/10.1007/s10120-020-01120-1

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