HS-20093, a B7-H3-targeted antibody-drug conjugate in lung cancer: Results from the ARTEMIS-001 phase 1a/b trial

This phase 1a/b study (NCT05276609) evaluated the safety, pharmacokinetics, and efficacy of B7-H3-targeted antibody-drug conjugate HS-20093 (GSK5764227) in 306 patients with previously treated advanced solid tumors. In phase 1a, 12.0 mg/kg was established as the maximum tolerated dose. Among 236 lung cancer patients who received 8.0 or 10.0 mg/kg HS-20093, the most frequent grade ≥3 treatment-related adverse events (AEs) included decreased neutrophil (25.5% vs. 50.5%) and white blood cell counts (19.7% vs. 42.4%), and anemia (16.8% vs. 34.3%), respectively. Treatment-related interstitial lung disease and AEs leading to death occurred in 3.4% and 3.8% of patients, respectively. Among response-evaluable…