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Immunological and nutritional predictive factors in patients receiving pembrolizumab for the first-line treatment of non-small cell lung cancer

  • Original Article – Cancer Research
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Abstract

Purpose

Immune checkpoint inhibitors (ICIs) have prolonged the survival of patients with various carcinomas, including non-small cell lung cancer (NSCLC), and have caused a paradigm shift in cancer treatment. Although programmed death-ligand 1 (PD-L1) expression in tumor cells is a predictive marker of therapeutic efficacy, additional predictive markers are required. This study aimed to explore the role of immunological and nutritional parameters in the prediction of treatment response.

Methods

Patients diagnosed with NSCLC and treated with pembrolizumab were examined retrospectively. Body weight was measured 4–6 weeks before the start of the first treatment, immediately before treatment, and 4–6 weeks after the start of the first treatment. Progression-free survival (PFS) was defined as the time from the start of pembrolizumab treatment to the last follow-up date or until disease progression. Statistical analyses were performed to confirm the association between various factors and association between these factors and PFS.

Results

Thirty-eight patients with advanced NSCLC were included. We observed a significant association of weight loss and PD-L1 expression with PFS in the multivariate analysis. A significant correlation was found between the advanced lung cancer inflammation index and neutrophil-to-lymphocyte ratio. A weight loss of > 5% after the start of treatment was significantly associated with worse PFS.

Conclusions

Weight loss is an important negative prognostic factor in patients with NSCLC receiving immunotherapy. Weight maintenance may be important for good ICI treatment efficacy, and future interventions in cancer cachexia are expected to further enhance the treatment efficacy of ICIs.

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Availability of data

The data sets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

References

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Acknowledgements

We would like to thank Editage (www.editage.com) for English language editing.

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

Authors

Contributions

NS: conception and design, treatment of patients, analysis and interpretation of the data, writing, review and/or revision of the manuscript; TS: conception and design, treatment of patients, analysis and interpretation of the data, writing, review and/or revision of the manuscript; YY: treatment of patients, writing, review and/or revision of the manuscript. HN: writing, review and/or revision of the manuscript; YM: writing, review and/or revision of the manuscript; HC: writing, review and/or revision of the manuscript. All authors participated in manuscript preparation and approved the final version of the manuscript.

Corresponding author

Correspondence to Naoki Shijubou.

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Conflict of interest

The authors declare that they have no conflict of interest.

Code availability

Not applicable.

Ethics approval

This study was conducted with the approval of the Institutional Review Board (IRB) of Hakodate Goryokaku Hospital (No. 2021–015), and was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.

Consent to participate

As this was a retrospective study, the IRB waived the requirement for informed consent, but patient confidentiality was protected.

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Not applicable.

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Shijubou, N., Sumi, T., Yamada, Y. et al. Immunological and nutritional predictive factors in patients receiving pembrolizumab for the first-line treatment of non-small cell lung cancer. J Cancer Res Clin Oncol 148, 1893–1901 (2022). https://doi.org/10.1007/s00432-022-03941-2

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  • DOI: https://doi.org/10.1007/s00432-022-03941-2

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