Abstract
To evaluate the impact of statin use on overall survival and lung cancer-specific survival in patients with unresectable stage III lung squamous cell carcinoma (LSCC) undergoing standard concurrent chemoradiotherapy (CCRT). Using data from the Taiwan Cancer Registry Database and National Health Insurance Research Database, this propensity score matching cohort study analyzed the influence of statin use during CCRT on overall survival and lung cancer-specific survival. Statin use during CCRT was independently associated with significant improvements in overall survival and lung cancer-specific survival. The adjusted hazard ratio (95% CI) for all-cause mortality in the statin group versus the non-statin group was 0.60 (0.53-0.68, P < 0.0001). Similarly, the adjusted hazard ratio for lung cancer-specific mortality in the statin group versus the non-statin group was 0.61 (95% CI, 0.54-0.70, P < 0.0001). Pravastatin and fluvastatin exhibited the greatest potential in reducing lung cancer-specific mortality among statins, with rosuvastatin following closely behind. Atorvastatin demonstrated comparable effectiveness, while simvastatin and lovastatin displayed lower efficacy in this regard. Furthermore, a dose-response relationship was observed, with higher cumulative defined daily doses and greater daily intensity of statin use associated with reduced mortality. Our study provides evidence that statin use during CCRT for unresectable stage III LSCC is associated with significant improvements in overall survival and lung cancer-specific survival. Pravastatin showed the highest potential for reducing lung cancer-specific mortality among statins, followed by rosuvastatin. Atorvastatin and fluvastatin exhibited similar effectiveness, while simvastatin and lovastatin demonstrated lower efficacy. The dose-response relationship showed higher statin utilization in reducing lung cancer-specific mortality.
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