REVIEW article

Front. Immunol.

Sec. Cancer Immunity and Immunotherapy

Volume 16 - 2025 | doi: 10.3389/fimmu.2025.1599908

This article is part of the Research TopicCommunity Series in Novel Reliable Approaches for Prediction and Clinical Decision-making in Cancer: Volume IIView all 4 articles

Predictive Biomarkers in the Era of Immunotherapy for Gastric Cancer: Current Achievements and Future Perspectives Author

Provisionally accepted
  • 1Liaoning Cancer Hospital, China Medical University, Shenyang, China
  • 2Dalian Medical University, Dalian, Liaoning, China

The final, formatted version of the article will be published soon.

Gastric cancer (GC) is one of the primary contributors to cancer-related mortality on a global scale. It holds a position within the top five most prevalent malignancies both in terms of occurrence and fatality rates. Immunotherapy, as a breakthrough cancer treatment, brings new hope for GC patients. Various biomarkers, such as the expression of programmed death ligand-1 (PD-L1), the microsatellite instability (MSI) status, tumor mutational burden (TMB), and Epstein-Barr virus (EBV) infection, demonstrate potential to predict the effectiveness of immunotherapy in treating GC.Nevertheless, each biomarker has its own limitations, which leads to a significant portion of patients continue to be unresponsive to immunotherapy. With the understanding of the tumor immune microenvironment (TIME), genome sequencing technology, and recent advances in molecular biology, new molecular markers, such as POLE/POLD1mutations, circulating tumor DNA, intestinal flora, lymphocyte activation gene 3 (LAG-3), and lipid metabolism have emerged. This review aims to consolidate clinical evidence to offer a thorough comprehension of the existing and emerging biomarkers. We discuss the mechanisms, prospects of application, and limitations of each biomarker. We anticipate that this review will open avenues for fresh perspectives in the investigation of GC immunotherapy biomarkers and promote the precise choice of treatment modalities for gastric cancer patients, thereby advancing precision immuno-oncology endeavors.

Keywords: biomarker, gastric cancer, Immune checkpoint inhibitor, Immunotherapy, Predictive Value

Received: 25 Mar 2025; Accepted: 24 Apr 2025.

Copyright: © 2025 Sun, Zhu, Gao, Wang, Zhao and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
Yanmei Zhu, Liaoning Cancer Hospital, China Medical University, Shenyang, China
Jingdong Zhang, Liaoning Cancer Hospital, China Medical University, Shenyang, China

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