Tislelizumab Versus Chemotherapy as Second-Line Treatment for Advanced or Metastatic Esophageal Squamous Cell Carcinoma (RATIONALE-302): A Randomized Phase III Study

Lin Shen, Ken Kato, Sung Bae Kim, Jaffer A. Ajani, Kuaile Zhao, Zhiyong He, Xinmin Yu, Yongqian Shu, Qi Luo, Jufeng Wang, Zhendong Chen, Zuoxing Niu, Longzhen Zhang, Tienan Yi, Jong Mu Sun, Jianhua Chen, Guohua Yu, Chen Yuan Lin, Hiroki Hara, Qing BiTaroh Satoh, Roberto Pazo-Cid, Hendrick Tobias Arkenau, Christophe Borg, Florian Lordick, Liyun Li, Ningning Ding, Aiyang Tao, Jingwen Shi, Eric Van Cutsem

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

PURPOSEPatients with advanced or metastatic esophageal squamous cell carcinoma (ESCC) have poor prognosis. For these patients, treatment options are limited after first-line systemic therapy.PATIENTS AND METHODSIn this open-label phase III clinical study, patients with advanced or metastatic ESCC, whose tumor progressed after first-line systemic treatment, were randomly assigned (1:1) to receive intravenous tislelizumab, an anti-programmed cell death protein 1 antibody, 200 mg every 3 weeks or chemotherapy (investigator's choice of paclitaxel, docetaxel, or irinotecan). The primary end point was overall survival (OS) in all patients. The key secondary end point was OS in patients with programmed death-ligand 1 tumor area positivity (TAP) score ≥ 10%.RESULTSIn total, 512 patients across 11 countries/regions were randomly assigned. At final analysis, conducted after 410 death events occurred, OS was significantly longer with tislelizumab versus chemotherapy in all patients (median, 8.6 v 6.3 months; hazard ratio [HR], 0.70 [95% CI, 0.57 to 0.85]; one-sided P =.0001), and in patients with TAP ≥ 10% (median, 10.3 months v 6.8 months; HR, 0.54 [95% CI, 0.36 to 0.79]; one-sided P =.0006). Survival benefit was consistently observed across all predefined subgroups, including those defined by baseline TAP score, region, and race. Treatment with tislelizumab was associated with higher objective response rate (20.3% v 9.8%) and a more durable antitumor response (median, 7.1 months v 4.0 months) versus chemotherapy in all patients. Fewer patients experienced ≥ grade 3 treatment-related adverse events (18.8% v 55.8%) with tislelizumab versus chemotherapy.CONCLUSIONTislelizumab significantly improved OS compared with chemotherapy as second-line therapy in patients with advanced or metastatic ESCC, with a tolerable safety profile. Patients with programmed death-ligand 1 TAP ≥ 10% also demonstrated statistically significant survival benefit with tislelizumab versus chemotherapy.

Original languageEnglish (US)
Article numberJCO.21.01926
JournalJournal of Clinical Oncology
Volume71
DOIs
StatePublished - Apr 1 2022

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

MD Anderson CCSG core facilities

  • Clinical and Translational Research Center

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