Abstract
Few data are available regarding the nephrotoxicity of immune checkpoint inhibitor (ICI) combination therapy in advanced renal cell carcinoma (RCC). This study aimed to investigate the nephrotoxicity of ICI-based combination therapy versus standard of care sunitinib in patients with advanced RCC. We searched Embase/PubMed/Cochrane Library for relevant randomized controlled trials (RCTs). Treatment-related nephrotoxicities including increase of creatinine and proteinuria were analyzed by Review Manager 5.4 software. Seven RCTs involving 5239 patients were included. The analysis showed that ICI combination therapy had similar risks of any grade (RR = 1.03, 95% CI: 0.77-1.37, P = 0.87) and grade 3-5 (RR = 1.48, 95% CI: 0.19-11.66, P = 0.71) increased creatinine compared with sunitinib monotherapy. However, ICI combination therapy was associated with significantly higher risks of any grade (RR = 2.33, 95% CI: 1.54-3.51, P < 0.0001) and grade 3-5 proteinuria (RR = 2.25, 95% CI: 1.21-4.17, P = 0.01). This meta-analysis suggests that ICI combination therapy shows more nephrotoxicity of proteinuria than sunitinib in advanced RCC, which deservesahighattention in the clinic.
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