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Published in: BMC Cancer 1/2024

Open Access 01-12-2024 | Gastric Cancer | Research

Alpha-fetoprotein predicts the treatment efficacy of immune checkpoint inhibitors for gastric cancer patients

Authors: Jingjing Zhang, Lei Wang, Shasha Zhang, Ruijie Cao, Yufei Zhao, Yue Zhao, Yanrong Song, Zhanjun Guo

Published in: BMC Cancer | Issue 1/2024

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Abstract

Background

Immune checkpoint inhibitors (ICIs) are commonly used in conjunction with chemotherapy to improve treatment outcomes for patients with gastric cancer. Since AFP could influence immunity by both inhibiting natural killer (NK) cells and regulating negatively the function of dendritic cells, we evaluated the influence of baseline serum alpha-fetoprotein (AFP) levels on the curative effect of ICIs in advanced gastric cancer (AGC) patients.

Methods

A retrospective analysis was conducted on 158 AGC patients who underwent ICI treatment. The patients were divided into high and low groups based on the AFP threshold of 20 ng/ml. The efficacy of ICI treatment was assessed using objective response rate (ORR), disease control rate (DCR), progression-free survival (PFS), and overall survival (OS).

Results

The higher levels of baseline AFP were found to be associated with a decrease in the effectiveness of ICIs, as evidenced by a DCR of 50.0% in the group with high AFP levels compared to 87.7% in the group with low AFP levels (P < 0.001). Further analysis using Kaplan-Meier survival techniques indicated that a high AFP level was linked to shorter progression-free survival (PFS) (P < 0.001) and overall survival (OS) (P = 0.001) in AGC individuals receiving ICIs. After propensity score matching, a log rank test revealed that the high AFP group had a decrease in median PFS (P = 0.011) and median OS (P = 0.036) compared to the low AFP group. The high AFP levels also showed its association with shorter PFS and OS in the subgroup analysis of ICI plus chemotherapy patients.

Conclusions

Baseline AFP levels may predict immune checkpoint inhibitor treatment efficacy in AGC patients.
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Metadata
Title
Alpha-fetoprotein predicts the treatment efficacy of immune checkpoint inhibitors for gastric cancer patients
Authors
Jingjing Zhang
Lei Wang
Shasha Zhang
Ruijie Cao
Yufei Zhao
Yue Zhao
Yanrong Song
Zhanjun Guo
Publication date
01-12-2024
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2024
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-024-11999-z

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