Tislelizumab plus chemotherapy as first-line treatment for recurrent or metastatic nasopharyngeal cancer: A multicenter phase 3 trial (RATIONALE-309)

Cancer Cell. 2023 Jun 12;41(6):1061-1072.e4. doi: 10.1016/j.ccell.2023.04.014. Epub 2023 May 18.

Abstract

Checkpoint inhibitors are effective in recurrent/metastatic nasopharyngeal cancer (R/M NPC). RATIONALE-309 (NCT03924986) randomized 263 treatment-naive R/M NPC patients to tislelizumab or placebo every 3 weeks (Q3W), plus chemotherapy (Q3W for 4-6 cycles). At interim analysis, progression-free survival (PFS) was significantly longer with tislelizumab-chemotherapy versus placebo-chemotherapy (hazard ratio: 0.52; 95% confidence interval: 0.38, 0.73; p < 0.0001). PFS benefit for tislelizumab-chemotherapy versus placebo-chemotherapy was observed regardless of programmed death-ligand 1 expression. PFS after next line of treatment and overall survival showed favorable trends for tislelizumab-chemotherapy versus placebo-chemotherapy. The safety profile was similar between arms. Gene expression profiling (GEP) identified immunologically "hot" tumors, and showed an activated dendritic cell (DC) signature was associated with tislelizumab-chemotherapy PFS benefit. Our results support that tislelizumab-chemotherapy should be considered as first-line treatment for R/M NPC, and GEP and activated DC signature results may help identify patients who might benefit most from immunochemotherapy treatment. VIDEO ABSTRACT.

Keywords: PD-1 inhibitor; biomarker; clinical trial; double-blinded; gene expression profiling; immunotherapy; nasopharyngeal carcinoma; randomized; tislelizumab.

Publication types

  • Video-Audio Media
  • Multicenter Study
  • Clinical Trial, Phase III
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antibodies, Monoclonal, Humanized / therapeutic use
  • Antineoplastic Combined Chemotherapy Protocols / adverse effects
  • Humans
  • Nasopharyngeal Neoplasms* / drug therapy
  • Nasopharyngeal Neoplasms* / genetics
  • Nasopharyngeal Neoplasms* / pathology
  • Neoplasm Recurrence, Local / drug therapy
  • Neoplasm Recurrence, Local / pathology
  • Progression-Free Survival

Substances

  • tislelizumab
  • Antibodies, Monoclonal, Humanized

Associated data

  • ClinicalTrials.gov/NCT03924986