Abstract
Background
Small cell lung cancer (SCLC) is an extremely malignant subtype of lung cancer because of its high potential for metastases. Cardiac invasion of SCLC is a serious concern that may lead to systemic embolism or tract obstruction. It has aroused much concern that cardiovascular comorbidities may significantly affect the survival of SCLC patients and their treatment decisions.
Methods
We consecutively recruited 772 small cell lung cancer (SCLC) patients between January 2011 and December 2018 from 4 cancer specialty hospitals in China. Only newly diagnosed primary cancer inpatients were included. Univariable and multivariable adjusted Cox proportional hazard models were conducted to evaluate the risk factors associated with mortality. Hazard ratios (HRs) for mortality and corresponding 95% confidence intervals (95% CIs) were calculated.
Results
The prevalence of cardiovascular diseases (CVDs) was 34.6% in all SCLC patients. Log-rank analysis presented statistically significant differences in median survival time (MST) between patients with CVD and without CVD in all SCLC patients (9.0 months vs. 15.0 months, P = 0.005) and patients with chemotherapy only (12.0 months vs. 18.0 months, P = 0.048). Pericardial effusion (HR 1.671, 95% CI 1.082–2.580, P = 0.021) and heart failure (HR 1.752, 95% CI 1.290–2.379, P < 0.001) were independent risk factors associated with mortality in all SCLC patients. VTE is related to poorer prognosis in patients with chemotherapy only (HR 5.558, 95% CI 1.335–23.135, P = 0.018) and chemoradiotherapy (HR 3.057, 95% CI 1.270–7.539, P = 0.013).
Conclusions
Comprehensive management of CVD comorbidities is of vital importance for the long-term prognosis of SCLC patients.
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Data availability
The datasets used and/or analyzed during the current study are available from the corresponding author upon reasonable request.
Abbreviations
- CT:
-
Computed tomography
- CVD:
-
Cardiovascular diseases
- EGFR:
-
Epidermal growth factor receptor
- MST:
-
Median survival time
- NSCLC:
-
Non-small cell lung cancer
- SCLC:
-
Small cell lung cancer
- VEGF:
-
Vascular endothelial growth factor
- VHD:
-
Valvular heart disease
- VTE:
-
Venous thrombus embolism
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Acknowledgements
We thank Yunnan Cancer Hospital, Jiangxi Cancer Hospital, Chongqing Cancer Hospital, and Yuncheng Central Hospital for their support in data collection.
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(I) Conception and design: J Y and W Y. (II) Administrative support: H W, Z B, Y X, and Y L. (III) Provision of study materials or patients: D L. (IV) Collection and assembly of data: H L and T W. (V) Data analysis and interpretation: H L and T W. (VI) Manuscript writing: All authors. (VII) Final approval of manuscript: all authors.
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Ethics approval was granted from the ethics committee of Yuncheng Central Hospital (YXLL2022004). The study conformed to the provisions of the Declaration of Helsinki (as revised in 2013).
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Liang, H., Wang, T., Liu, D. et al. Cardiovascular comorbidities and their prognostic value in small cell lung cancer patients with chemoradiotherapy. Clin Transl Oncol 26, 1348–1356 (2024). https://doi.org/10.1007/s12094-023-03359-3
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DOI: https://doi.org/10.1007/s12094-023-03359-3