RecruitingPhase 3Drug trialBL-M14D1 Plus Atezolizumab vs Standard of Care in First-Line Extensive-Stage Small Cell Lung Cancer (BrenDeLL-Lung01)The objective of the study is to evaluate the efficacy and safety of BL-M14D1 in combination with Atezolizumab compared to Standard-of-Care Therapy in adult participants with previously untreated extensive-stage small cell lung cancer (ES-SCLC).