Abstract
Background
This study examined (1) associations between sociodemographic and clinical variables with low muscle mass and radiodensity and their loss relative to treatment commencement in patients with lung cancer; and (2) the magnitude of change in muscle mass and association with treatment outcomes and survival.
Methods
Prospective study in patients planned for curative (chemo)radiotherapy for lung cancer. Low skeletal muscle mass and radiodensity and muscle loss were determined from pre- and post-treatment computed tomography images. Sociodemographic, clinical, functional, nutritional, physical activity and alternate body composition were assessed pre-treatment. Logistic and linear regression and Fisher’s exact tests were used to assess associations between variables and study outcomes. Cox proportional hazards models were fitted to examine associations with survival.
Results
Overall, 53 patients (62.3% male) with a mean age of 69 ± 9.3 years and 54.8% with stage III disease were included. Pre-treatment low calf circumference was associated with pre-treatment low muscle mass (p = 0.006). Higher comorbidity scores pre-treatment were associated with normal muscle radiodensity pre- and post-treatment (p = 0.015, p = 0.027, respectively). Pre-treatment low energy and protein intake were associated with low muscle radiodensity post-treatment. Muscle mass and radiodensity were not associated with survival or treatment outcomes.
Conclusions
In patients with lung cancer, there is some evidence anthropometric measures of muscle mass are suggestive of low muscle mass pre-radiotherapy, while low energy intake pre-treatment may indicate low muscle radiodensity after treatment. However, these findings are limited by the small sample size and further prospective studies with larger samples are required.
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Data availability
The data generated and analysed during this study can be found within the published article and its supplementary files.
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Acknowledgements
The authors acknowledge the research assistants and clinicians who supported the recruitment of participants to the PREDICT study and access to the CT images.
Funding
NK and this study are supported by a Victorian Cancer Agency Nursing and Allied Health Clinical Research Fellowship (grant no: CRFNAH18001).
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Contributions
Conceptualisation: NK, GA, CMP, RMD, LD, DB, LE, SS, SFF, AU, NH, AW, GW. Data curation: ARC, NK, NH, AW, GW, AL, AC. Formal analysis: NK, GA, ARC. Writing—original draft preparation: NK. Writing—reviewing and editing: all authors.
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Competing interests
NK reports honoraria from Abbott Nutrition Australasia. CP reports honoraria or consulting fees from Abbott Nutrition, Nestle Health Sciences, Nutricia and Pfizer. RD reports honoraria from Abbott Nutrition Australasia and Fresenius Kabi. GA, ARC, LD, LE, DB, SS, SFF, AU, NH, AW, GW, AL and AC have no conflict of interest to declare.
Ethical approval and consent to participate
This study received ethics approval from the Human Research Ethics Committee at Peter MacCallum Cancer Centre (HREC/53147/PMCC-2019) and Deakin University (2019-320). All methods were performed in accordance with the Declaration of Helsinki and relevant ethical guidelines at Peter MacCallum Cancer Centre and Deakin University and written informed consent was obtained from all participants.
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Kiss, N., Prado, C.M., Abbott, G. et al. Sociodemographic and clinical factors associated with low muscle mass and composition in people treated with (chemo)radiotherapy for lung cancer. Eur J Clin Nutr 79, 369–378 (2025). https://doi.org/10.1038/s41430-024-01552-3
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DOI: https://doi.org/10.1038/s41430-024-01552-3