Abstract
Background and aims
Whether statin treatment is effective in retarding the progression of radiation-induced carotid stenosis (RICS) in head and neck cancer (HNC) survivors has not been well studied. The purpose of this study was to assess the association of statin treatment with RICS progression rate in HNC survivors after radiotherapy.
Methods
We conducted a retrospective cohort study at Sun Yat-sen Memorial Hospital, Sun Yat-sen University in Guangzhou, China. Between January 2010 and December 2021, we screened HNC survivors whose carotid ultrasound scans had shown stenosis of the common and/or internal carotid arteries. The primary outcome was the RICS progression rate. We compared eligible patients treated with statins with those who did not in multivariable Cox regression models.
Results
A total of 200 patients were included in this study, of whom 108 received statin treatment and 92 did not. Over a mean follow-up time of 1.5 years, 56 (28.0%) patients showed RICS progression, 24 (42.9%) and 32 (57.1%) in the statin and control groups, respectively. The statin group showed less RICS progression than the control group (adjusted-HR 0.49, 95% CI 0.30–0.80, P = 0.005). In the subgroup analysis, there was no significant interaction in the effect of statins on lowering RICS progression rate in the subgroups stratified by baseline low-density lipoprotein cholesterol (LDL-C) levels (P for interaction = 0.53) or baseline degrees of stenosis (P for interaction = 0.50).
Conclusions
Statin treatment was associated with a lower risk of RICS progression in patients with HNC after radiotherapy, regardless of baseline LDL-C level and baseline stenosis degrees.
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Availability of data and materials
Data supporting the findings of the study are available on reasonable request after approval of a proposal from the corresponding author (YT, tangym@mail.sysu.edu.cn).
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Acknowledgements
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Funding
YT is supported by the National Natural Science Foundation of China (81925031 and 81820108026) and the Science and Technology Program of Guangzhou (202007030001). YL is supported by the National Natural Science Foundation of China (81872549) and the Key-Area Research and Development Program of Guangdong Province (2018B030340001). HL is supported by The National Natural Science Foundation of China (82003389). YX is supported by the Youth Program of the National Natural Science Foundation of China (81801229). The funder of the study had no role in study design, data collection, data analysis, data interpretation, or writing of the report.
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Conceptualization: YC, YL, QS and YT. Data curation: YC, YX, DP, HL and JC. Analysis and interpretation of data: YC, DP, YL, QS and YT. Writing—original draft: YC, YL, QS and YT. Writing, review and/or revision of the manuscript: All authors. Study supervision: YL, QS and YT.
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This study was approved by the Ethics Committee of Sun Yat-sen Memorial Hospital, Sun Yat-sen University, and the requirement for informed consent was waived due to the retrospective design.
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Chen, Y., Xu, Y., Pan, D. et al. Progression rate of radiation-induced carotid stenosis in head and neck cancer survivors after statin treatment: a retrospective cohort study. J Neurol 271, 2573–2581 (2024). https://doi.org/10.1007/s00415-024-12197-4
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DOI: https://doi.org/10.1007/s00415-024-12197-4