Two is company, is three a crowd? Triplet therapy, novel molecular targets, and updates on the management of advanced renal cell carcinoma

Abstract

Purpose of review The purpose of this review is to highlight the most recent changes in the management of advanced renal cell carcinoma, a complicated and ever-changing field of research. Recent findings A recent meta-analysis examining combination therapy favors nivolumab plus cabozantinib as the overall survival leader in doublet therapy. Initial results on the first ever trial of triplet therapy have demonstrated improved progression-free survival over current standard of care. The hypoxia-inducible factor-2α (HIF-2α) inhibitor belzutifan is FDA approved for patients with von Hippel-Lindau disease and is currently being investigated in patients with nonhereditary renal cell carcinoma. The new glutamate synthesis inhibitor, telaglenastat, perhaps confers synergistic benefit when combined with everolimus, but combination with cabozantinib was not so effective. Dual mammalian target of rapamycin (mTOR) inhibition with sapanisertib does not appear to be an effective therapeutic option. New biomarkers and targets are actively being investigated. Four recent trials examining alternative agents to pembrolizumab in the adjuvant setting did not demonstrate an improvement in recurrence-free survival. Cytoreductive nephrectomy in the combination therapy era is supported by retrospective data; clinical trials are recruiting patients. Summary The last year ushered in novel approaches of varying success for managing advanced renal cell carcinoma, including triplet therapy, HIF-2α inhibitors, metabolic pathway inhibitors, and dual mTOR inhibitors. Pembrolizumab remains the only modern therapy available in the adjuvant setting, and the waters surrounding cytoreductive nephrectomy are still murky.