RecruitingPhase 3Drug trialSafety and Efficacy of BNT327, an Investigational Therapy in Combination With Chemotherapy for Patients With Untreated Small-cell Lung CancerThis is a Phase III, multisite, randomized, double-blinded study to investigate pumitamig (BNT327) combined with chemotherapy (etoposide/carboplatin) compared to atezolizumab combined with chemotherapy (etoposide/carboplatin) for the treatment of participants with previously untreated extensive-stage small-cell lung cancer (ES-SCLC).