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BMS, BioNTech Small-Cell Lung Cancer Drug Posts 76% Tumor Reduction, Advances to Phase III

The readout highlights BMS’s partnership-led oncology strategy supported by cash-generating brands Eliquis and Opdivo.

Overview

  • Bristol-Myers Squibb and BioNTech reported that BNT327, also known as pumitamig, achieved a 76% tumor reduction rate in a Phase II study in small cell lung cancer and has progressed to Phase III in a collaboration valued at up to $11.1 billion.
  • Updated Phase I results for BMS-986504, a PRMT5 inhibitor, showed a 29% response rate in MTAP-deleted non-small cell lung cancer, reinforcing a biomarker-driven development approach.
  • In July 2025, BMS launched an autoimmune-focused spinout with Bain Capital funded with $300 million, retaining a 20% ownership stake and potential milestone and royalty upside.
  • Legacy products continued to deliver in Q2 2025, with Eliquis sales rising 8% to $3.7 billion and Opdivo revenue up 7% to $2.6 billion.
  • Analysts at BMO Capital and William Blair maintained Hold ratings in early September, citing modest uptake for Cobenfy and questions about VEGF-based strategies achieving broad survival gains in NSCLC.