Summit Therapeutics partners with GSK for cancer drug combination trial

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Summit Therapeutics Announces Clinical Trial Collaboration with GSK to Evaluate Ivonescimab in Combination with GSK’s B7-H3 Antibody Drug Conjugate (ADC)

January 12, 2026 6:15 AM EST

Summit to Advance Development Opportunities of Ivonescimab with GSKs Novel B7-H3 risvutatug rezetecan

Multiple Solid Tumor Settings to Be Pursued with Clinical Trials Expected to Start in Mid-2026

MIAMI--(BUSINESS WIRE)-- Summit Therapeutics Inc. (NASDAQ: SMMT) today announced it has entered into a clinical trial collaboration with GSK plc (GSK, LSE/NYSE: GSK) to evaluate ivonescimab, a novel, investigational PD-1 / VEGF bispecific antibody, in combination with risvutatug rezetecan (also known as GSK227), GSKs novel investigational B7-H3 targeting antibody... More