SEZ6 x DNA

This is a multicenter, open-label, Phase 1 study of ABBV-011 given as a single agent and in combination with budigalimab (ABBV-181) in participants with relapsed or refractory small cell lung cancer (SCLC). The study consists of 4 parts: Part A is a single-agent ABBV-011 dose regimen finding cohort; followed by Part B, a single-agent ABBV-011 dose expansion cohort; and then Part C, an ABBV-011 and budigalimab (ABBV-181) combination escalation and expansion cohort; Part D, single-agent ABBV-011 dose-evaluating cohort for Japan.