Summit Therapeutics announces Phase III HARMONi-2 trial results showing ivonescimab's superior PFS (11.14 months vs. 5.82 months for pembrolizumab) in advanced NSCLC, with comparable safety profiles. The company plans to initiate HARMONi-7 in early 2025, a multi-regional Phase III trial for first-line PD-L1 high metastatic NSCLC.