Abstract
Purpose of review Renal cell carcinoma (RCC) is resistant to chemotherapy. Adjuvant interferon and tyrosine kinase inhibitors were ineffective. Immune checkpoint inhibitors (ICIs), however, have shed new hope in this setting. In the current review, updated evidence of adjuvant therapy in RCC is summarized. Recent findings KEYNOTE-564 demonstrated survival benefits of adjuvant Pembrolizumab in RCC. EAU guidelines now recommend adjuvant pembrolizumab to ccRCC patients at an increased risk of recurrence, as defined in the study. At a median follow-up of 24 months, the disease-free survival (DFS) was significantly longer for the Pembrolizumab group than placebo group [DFS 77.3 vs. 68.1%; hazard ratio for recurrence or death, 0.68; 95% confidence interval (95% CI), 0.53–0.87; P = 0.002]. From its updated analysis, at median follow up of 57.2 months, overall survival (OS) benefit of Pembrolizumab was demonstrated (hazard ratio for death, 0.62; 95% CI, 0.44–0.87; P = 0.005). A number of other adjuvant ICI trials have though been negative. Summary Pembrolizumab is currently the only adjuvant therapy for RCC showing survival benefits, amid a number of negative trials on adjuvant immunotherapy. Currently, there is no role for adjuvant tyrosine-kinase inhibitors and radiotherapy for RCC. Meanwhile, a multidisciplinary approach and shared decision-making should be adopted.
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