A Phase 3, Multicenter, Randomized, Open-label Study of Ifinatamab Deruxtecan (I-DXd), a B7-H3 Antibody Drug Conjugate (ADC), Versus Treatment of Physician's Choice (TPC) in Subjects With Relapsed Small Cell Lung Cancer (SCLC) (IDeate-Lung02)

Inclusion Criteria Participants must meet all the following criteria to be eligible for randomization into the study: 1. Sign and date the informed consent form prior to the start of any study-specific qualification procedures. 2. Adults ≥18 years or the minimum legal adult age (whichever is greater) at the time the informed consent form is signed. 3. Has histologically or cytologically documented extensive-stage small cell lung cancer (ES-SCLC). 4. The participant must provide adequate baseline tumor samples with sufficient quantity and quality of tumor tissue content. 5. Has received prior…