Summit Therapeutics posts HARMONi-6 ASCO 2026 plenary slides on ivonescimab in squamous NSCLC

Summit Therapeutics

Summit Therapeutics

SMMT

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  • Summit Therapeutics published Phase 3 HARMONi-6 overall survival results for ivonescimab with chemotherapy in first-line advanced squamous NSCLC.
  • Ivonescimab, a PD-1/VEGF bispecific antibody, showed a significant overall survival benefit versus tislelizumab with chemotherapy.
  • Earlier interim data showed median PFS of 11.1 months versus 6.9 months; HR 0.60; p<0.0001.
  • The double-blind trial enrolled 532 patients, testing ivonescimab 20 mg/kg every three weeks versus tislelizumab 200 mg every three weeks.


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