ESMO 2023 | RATIONALE-305: tislelizumab + chemo vs placebo +chemo in advanced GC/GEJC

Tania C. Fleitas, MD, PhD, from the University of Valencia, discusses the Phase III RATIONALE-305 (NCT03777657) study at ESMO 2023. The study evaluates the efficacy of tislelizumab plus chemotherapy compared to placebo (PBO) plus chemotherapy as first-line treatment for advanced gastric or gastroesophageal junction cancer. The primary analysis in the intent-to-treat (ITT) population reveals significantly improved overall survival (OS) with tislelizumab plus chemotherapy (15.0 months) compared to PBO plus chemotherapy (12.9 months), with a hazard ratio of 0.80. Grade ≥3 treatment-related adverse events occurred in 53.8% of patients treated with tislelizumab. These results support tislelizumab as a promising therapeutic option for advanced gastric cancer. This interview took place at the European Society for Medical Oncology (ESMO) 2023 Congress in Madrid, Spain.

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