Pembrolizumab plus axitinib versus sunitinib for advanced clear cell renal cell carcinoma: 5-year survival and biomarker analyses of the phase 3 KEYNOTE-426 trial

Brian I. Rini, Elizabeth R. Plimack, Viktor Stus, Rustem Gafanov, Tom Waddell, Dmitry Nosov, Frédéric Pouliot, Boris Alekseev, Denis Soulières, Bohuslav Melichar, Ihor Vynnychenko, Sergio Jobim de Azevedo, Delphine Borchiellini, Raymond S. McDermott, Jens Bedke, Satoshi Tamada, Sterling Wu, Julia Markensohn, Yiwei Zhang, Andrey LobodaAmir Vajdi, Rodolfo F. Perini, Joseph Burgents, Thomas Powles

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

At the first interim analysis of the phase 3 KEYNOTE-426 trial, first-line pembrolizumab plus axitinib showed superior overall survival (OS), progression-free survival (PFS) and objective response rate (ORR) over sunitinib for advanced renal cell carcinoma (RCC). To assess long-term durability of clinical outcomes and elucidate predictive biomarkers for RCC, we performed efficacy and prespecified exploratory biomarker analyses from KEYNOTE-426 with ≥5 years of follow-up. Pembrolizumab plus axitinib showed sustained benefits in OS (hazard ratio: 0.84; 95% confidence interval: 0.71–0.99), PFS (hazard ratio: 0.69; 95% confidence interval: 0.59–0.81) and ORR (60.6% versus 39.6%) compared to sunitinib. An 18-gene T-cell-inflamed gene expression profile (TcellinfGEP) was positively associated with OS (P = 0.002), PFS (P < 0.0001) and ORR (P < 0.0001) within the pembrolizumab plus axitinib arm. An angiogenesis signature was positively associated with OS (P = 0.004) within the pembrolizumab plus axitinib arm and with OS (P < 0.0001), PFS (P < 0.001) and ORR (P = 0.002) within the sunitinib arm. Across arms, programmed cell death ligand 1 combined positive score was only associated (negatively) with OS within the sunitinib arm (P = 0.025). Additionally, PBRM1 (polybromo-1) mutation had a positive association with ORR (P = 0.002) within the pembrolizumab plus axitinib arm. Within the sunitinib arm, OS was positively associated with VHL (von Hippel–Lindau tumor suppressor gene) (P = 0.040) and PBRM1 (P = 0.010) mutations and was negatively associated with BAP1 (BRCA1-associated protein 1) mutation (P = 0.019). Results showed a sustained clinical benefit with pembrolizumab plus axitinib over sunitinib and provide valuable information on biomarkers for immunotherapy-based treatment combinations in advanced RCC. Prospective clinical investigations are needed for biomarker-directed treatment for advanced RCC. ClinicalTrials.gov identifier: NCT02853331.

Original languageEnglish
Pages (from-to)3475-3484
Number of pages10
JournalNature Medicine
Volume31
Issue number10
Early online dateAug 1 2025
DOIs
StatePublished - Oct 2025

Keywords

  • Adult
  • Aged
  • Antibodies, Monoclonal, Humanized/administration & dosage
  • Antineoplastic Combined Chemotherapy Protocols/therapeutic use
  • Axitinib/administration & dosage
  • B7-H1 Antigen/genetics
  • Biomarkers, Tumor/genetics
  • Carcinoma, Renal Cell/drug therapy
  • Female
  • Humans
  • Kidney Neoplasms/drug therapy
  • Male
  • Middle Aged
  • Progression-Free Survival
  • Sunitinib/therapeutic use

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