An Open-label, Multicenter Study of ZL-1310 to Evaluate the Safety, Efficacy, and Pharmacokinetics in Participants With Small Cell Lung Cancer

Inclusion Criteria: * Signed informed consent * Participant with metastatic or extensive-stage small cell lung cancer (de novo, not transformed) and for Part 1A and 1B must have documented disease progression during or following a platinum-based chemotherapy regimen. For Part 1C and Part 4, no prior systemic treatment for SCLC (including chemoradiotherapy for limited-stage SCLC). For Part 1B backfill and Part 3, first-line setting: no prior systemic treatment for SCLC (including chemoradiotherapy for limited-stage SCLC); or, first-line maintenance setting: participants have received at least…