Abstract
Purpose
Immune checkpoint inhibitors (ICIs) with anti-PD-1/PD-L1 antibody are promising treatments for hepatocellular carcinoma (HCC), but lack reliable biomarkers of response. In the present study, we aimed to investigate the correlation between pre-treatment body composition measures (muscle, adipose, etc.) and the prognosis of patients with HCC treated with ICIs.
Methods
We measured the total area of all skeletal muscles, total adipose tissue area, subcutaneous adipose tissue area, and visceral adipose tissue area at the level of the third lumbar vertebra using quantitative CT. Then, we calculated the skeletal muscle index, visceral adipose tissue index, subcutaneous adipose tissue index (SATI), and total adipose tissue index. The Cox regression model was used to determine the independent factors of the patient prognosis and construct a nomogram to predict survival. The consistency index (C-index) and calibration curve were used to determine the predictive accuracy and discrimination ability of the nomogram.
Results
Multivariate analysis revealed that the SATI (high- vs. low SATI; HR 0.251; 95% CI 0.109–0.577; P = 0.001), sarcopenia (sarcopenia vs. no sarcopenia; HR 2.171; 95% CI 1.100–4.284; P = 0.026), and portal vein tumor thrombus (PVTT) (PVTT vs. No PVTT; HR 2.429; 95% CI 1. 197–4. 929; P = 0.014) were indicated as independent prognostic factors for OS in multivariate analysis. Multivariate analysis indicated that Child–Pugh class (HR 0.477, 95% CI 0.257–0.885, P = 0.019) and sarcopenia (HR 2.376, 95% CI 1.335–4.230, P = 0.003) were independent prognostic factors of PFS. We established a nomogram using SATI, SA, and PVTT to predict the 12-month and 18-month survival probability of HCC patients treated with ICIs. The C-index of the nomogram was 0.754 (95% CI 0.686–0.823), and the calibration curve confirmed that the predicted results were in good agreement with the actual observations.
Conclusion
Subcutaneous adipose and sarcopenia are significant prognostic factors of patients with HCC receiving ICIs. A nomogram based on body composition parameters and clinical factors could well predict survival in HCC patients treated with ICIs.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This study was completed with the support of the Department of Medical Imaging and Interventional Oncology of the First Affiliated Hospital of the University of Science and Technology of China. We thank Professor Jiangning Dong from the Department of Medical Imaging, Changlong Hou from the Department of Interventional Oncology, and the doctors involved in the diagnosis and treatment.
Funding
This work was supported by National Cancer Center Climbing Foundation (No. NCC 201912B01); Wu Jieping Medical Foundation (No. 320.6750.2020-11-27); and China International Medical Foundation (No. Z-2014-06-2103).
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CH, FG, BX, and BF designed the study; YW, FG, BX, and BF recruited the patients; FG, BX, and BF performed assessment of body composition; BX performed statistical analysis and generated figures and tables; CH and FG provided intellectual input; CH, FG, BX, and BF drafted the manuscript; all authors approved the paper.
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The Declaration of Helsinki and the International Conference on Good Clinical Practice Standards were both followed during the conduct of this investigation. Due to the non-interventional nature of this investigation, ethical review and approval were waived. This waiver was granted by the First Affiliated Hospital of University of Science and Technology of China Ethics Committee. The data in this article are anonymous, and the requirement for informed consent was therefore waived.
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Xiong, B., Fu, B., Wu, Y. et al. Body composition predicts prognosis of hepatocellular carcinoma patients undergoing immune checkpoint inhibitors. J Cancer Res Clin Oncol 149, 11607–11617 (2023). https://doi.org/10.1007/s00432-023-05051-z
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DOI: https://doi.org/10.1007/s00432-023-05051-z