Trastuzumab Deruxtecan in Participants With HER2-mutated Metastatic Non-small Cell Lung Cancer (NSCLC)

This randomized, two-arm, phase 2, multicenter study will evaluate the safety and efficacy of 5.4 mg/kg and 6.4 mg/kg trastuzumab deruxtecan administered every 3 weeks (Q3W) in participants with HER2-mutated metastatic NSCLC. Each participant is expected to receive approximately 14 months of trastuzumab deruxtecan treatment. The primary endpoint of the study will be confirmed objective response rate (blinded independent central review). Secondary endpoints will include, but not limited to, disease control rate, duration of response, progression-free survival, objective response rate (investigator), overall survival, and safety.