More than three months ago, investors first learned that ivonescimab, a PD-1/VEGF-targeting bispecific antibody from Summit Therapeutics and Akeso Pharmaceuticals Inc., bested Keytruda (pembrolizumab) in PD-L1-positive non-small-cell lung cancer (NSCLC). At the 2024 World Conference on Lung Cancer over the weekend, Summit rolled out detailed data from the phase III Harmoni-2 trial, which included a nearly doubling of progression-free survival for ivonescimab compared to Merck & Co. Inc.’s established blockbuster drug.