Concomitant Statin Use and Survival in Patients With Cancer on Immune Checkpoint Inhibitors: A Meta-Analysis

PURPOSE The prognostic significance of concomitant statin use in cancer treatment with immune checkpoint inhibitors (ICIs) remains a subject of ongoing investigation. This study aims to clarify the prognostic value of statin use in this patient population and to provide a robust, evidence-based foundation to guide therapeutic decisions. METHODS A systematic search strategy was used across a multitude of digital archives to exhaustively identify all relevant academic literature published up until June 20, 2024. Studies published in English that reported hazard ratios (HRs) for overall survival (OS) and/or progression-free survival (PFS), along with corresponding 95% CIs, were considered eligible for inclusion. Meta-analyses were conducted to calculate combined HRs with 95% CIs. RESULTS A total of 25 studies, involving 46,154 patients with cancer, were included in the meta-analysis. The pooled results indicated that concomitant statin use was linked to better OS (HR, 0.80 [95% CI, 0.71 to 0.92]) and PFS (HR, 0.80 [95% CI, 0.69 to 0.92]) in patients with cancer under ICI therapy. Sensitivity analyses further validated the consistency and robustness of the combined results. CONCLUSION On the basis of the available clinical evidence, the concomitant use of statin is linked to an improved prognosis in oncology patients on ICI-based therapy. These observations underscore the potential of statin as an important adjunctive therapy in the treatment paradigm for ICI-treated patients with cancer, thereby establishing their significance as a key consideration in clinical management strategies. Further randomized controlled trials are imperative to validate the effect of statin use within the realm of ICI therapy.