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Interferon-γ predicts the treatment efficiency of immune checkpoint inhibitors in cancer patients

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Abstract

Purpose

Immune checkpoint inhibitors (ICIs) have improved the prognosis of cancer patients significantly with few predictive makers for treatment efficiency. Since interferon-gamma (IFN-γ) displayed its association with immunotherapy, we explored the correlation between IFN-γ and the efficacy of ICIs in tumor treatment.

Methods

We retrospectively examined cancer patients who received immune checkpoint inhibitors as first-line therapy at the Fourth Hospital of Hebei Medical University. The patients were divided into a low concentration group of IFN-γ (≤ 1.2 pg/mL) and a high concentration group (≥ 1.3 pg/mL) to evaluate the efficacy, which was indicated by the objective response rate (ORR), disease control rate (DCR), progression-free survival (PFS) and overall survival (OS).

Results

Thirty-five patients with low IFN-γ and 56 patients with high IFN-γ were involved in the evaluation, and the DCR was significantly different between these two groups (p = 0.009) with a high group of 81.4% (95% CI 69–94%) and a low group of 51.9% (95% CI 32–72%). The subsequent Kaplan–Meier survival analysis showed that the high IFN-γ patients displayed longer median OS than that of the low IFN-γ patients (p = 0.049), while no statistical difference existed for PFS (p = 0.971). The multivariate analysis also confirmed that the high IFN-γ level was independently associated with a better prognosis (HR: 0.318 95% CI 0.113–0.894, p = 0.030).

Conclusions

Basal serum IFN-γ levels were associated with the DCR and OS of cancer patients with higher IFN-γ exhibiting beneficial efficiency for ICIs treatment.

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Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author upon reasonable request.

References

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Acknowledgements

We thank Iren Guo (Emma Willard School, New York) for editing the English of our manuscripts.

Funding

This work was supported by the Foundation of Hebei Provincial Department of Science and Technology & Hebei Medical University (Grant No. 2020TXZH03).

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Authors and Affiliations

Authors

Contributions

JL contributed to study concepts, study design, data acquisition, quality control of data and algorithms, data analysis and interpretation, manuscript preparation, manuscript editing, and manuscript review. JM and NX contributed to study concepts, study design, manuscript editing, and manuscript review. ZJ, JL, and SZ contributed to data analysis and interpretation, and statistical analysis. ZG contributed to study concepts, study design, data acquisition, quality control of data and algorithms, data analysis and interpretation, manuscript editing, and manuscript review.

Corresponding author

Correspondence to Zhanjun Guo.

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Competing interests

The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript.

Ethical conduct of research

The authors state that they have obtained appropriate institutional review board approval or have followed the principles outlined in the Declaration of Helsinki for all human experimental investigations. Due to the retrospective nature of this study, a waiver of informed consent was applied for these analyses.

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Liu, J., Ma, J., Xing, N. et al. Interferon-γ predicts the treatment efficiency of immune checkpoint inhibitors in cancer patients. J Cancer Res Clin Oncol 149, 3043–3050 (2023). https://doi.org/10.1007/s00432-022-04201-z

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  • DOI: https://doi.org/10.1007/s00432-022-04201-z

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