Bristol-Myers Squibb CompanyPositive Phase 3 data for izalontamab brengitecan in two cancers shows significant survival and response improvements.

Bristol-Myers Squibb and SystImmune announced that interim Phase 3 data showed izalontamab brengitecan achieved statistically significant improvements in overall survival and progression-free survival in advanced triple-negative breast cancer and esophageal squamous cell carcinoma. In triple-negative breast cancer, the drug delivered a median overall survival of 15.9 months versus 12.5 months and progression-free survival of 8.5 months versus 3.1 months, with a confirmed objective response rate of 51.7% compared to 20.5% for physician's choice chemotherapy. In esophageal cancer, median overall survival was 9.8 months versus 7.2 months, progression-free survival was 4.2 months versus 2.0 months, and the objective response rate rose to 35.3% from 13.1%. Safety was manageable, with predominantly hematologic adverse events and low rates of interstitial lung disease. The results were presented at the 2026 American Society of Clinical Oncology meeting.
Bristol-Myers Squibb CompanyPositive Phase 3 data for izalontamab brengitecan in two cancers shows significant survival and response improvements.
Positive Phase 3 data for izalontamab brengitecan in two cancers shows significant survival and response improvements.