Merck and Daiichi Sankyo announced interim Phase 2 trial results for lung cancer treatment ifinatamab deruxtecan (I-DXd), showing objective response rates of ~55% and ~26% at 12 mg/kg and 8 mg/kg doses, respectively. The 12 mg/kg dose led to 23 partial responses, while the 8 mg/kg dose resulted in one complete and 11 partial responses. Median overall survival was 11.8 months and 9.4 months for the respective doses. Preliminary intracranial ORRs were 50.0% and 66.7% across the two dose groups. Adverse events led to 17% and 6.5% dropouts for the respective doses. The 12 mg/kg dose is selected for the trial's expansion part, with data to be presented at the World Conference on Lung Cancer in San Diego.