A Study to Evaluate the Optimal Dose, Adverse Events and Change in Disease Activity of Intravenous ABBV-706 in Combination With Atezolizumab Versus Standard of Care as First-Line Treatment in Adult Participants With Previously Untreated Extensive Stage Small Cell Lung Cancer

Yale University School of Medicine /ID# 278181, New Haven, Connecticut, United States

Ocala Oncology Center /ID# 278269, Ocala, Florida, United States

Moffitt Cancer Center /ID# 277573, Tampa, Florida, United States

Fort Wayne Medical Oncology And Hematology /ID# 277336, Fort Wayne, Indiana, United States

Baptist Health Lexington /ID# 277729, Lexington, Kentucky, United States

Dana-Farber Cancer Institute /ID# 277732, Boston, Massachusetts, United States

University Hospitals Cleveland Medical Center /ID# 277556, Cleveland, Ohio, United States

The University of Texas MD Anderson Cancer Center /ID# 277929, Houston, Texas, United States

Virginia Cancer Specialists - Fairfax /ID# 278298, Fairfax, Virginia, United States

Grand Hôpital de Charleroi - Les Viviers /ID# 276897, Charleroi, Hainaut, Belgium

Groupe Sante CHC - Clinique du MontLegia /ID# 276783, Liège, Liege, Belgium

Jessa Ziekenhuis - Campus Virga Jesse /ID# 276781, Hasselt, Limburg, Belgium

AZ Maria Middelares /ID# 277027, Ghent, Oost-Vlaanderen, Belgium

Lungenfachklinik Immenhausen /ID# 278005, Immenhausen, Hesse, Germany

Universitaetsklinikum Giessen und Marburg GmbH /ID# 277466, Marburg, Hesse, Germany

Evangelische Lungenklinik Berlin /ID# 277094, Berlin, Germany

Meir Medical Center /ID# 277292, Kefar Sava, Central District, Israel

Assuta Ashdod Medical Center /ID# 276661, Ashdod, Southern District, Israel

The Chaim Sheba Medical Center /ID# 276660, Ramat Gan, Tel Aviv, Israel

Rambam Health Care Campus- Haifa /ID# 276663, Haifa, Israel

Hadassah Medical Center-Hebrew University /ID# 276662, Jerusalem, Israel

National Cancer Center Hospital East /ID# 277239, Kashiwa-shi, Chiba, Japan

Shizuoka Cancer Center /ID# 277243, Sunto-gun, Shizuoka, Japan

Tokyo Metropolitan Komagome Hospital /ID# 277335, Bunkyo Ku, Tokyo, Japan

National Cancer Center Hospital /ID# 277237, Chuo-Ku, Tokyo, Japan

Wakayama Medical University Hospital /ID# 277260, Wakayama, Wakayama, Japan

Wielkopolskie Centrum Pulmonologii i Torakochirurgii im. Eugenii i Janusza Zeyla /ID# 276907, Poznan, Greater Poland Voivodeship, Poland

Uniwersytecki Szpital Kliniczny Nr 4 w Lublinie /ID# 276910, Lublin, Lublin Voivodeship, Poland

Narodowy Instytut Onkologii Im. Marii Sklodowskiej-Curie Panstwowy Instytut Bada /ID# 277112, Warsaw, Masovian Voivodeship, Poland

University Clinical Center Serbia /ID# 277007, Belgrade, Beograd, Serbia

Clinical Hospital Center - Bežanijska Kosa /ID# 277013, Belgrade, Beograd, Serbia

Institute For Pulmonary Diseases Of Vojvodina /ID# 277003, Kamenitz, Sremski Okrug, Serbia

University Clinical Center Kragujevac /ID# 277179, Kragujevac, Sumadijski Okrug, Serbia

National Cancer Center /ID# 277434, Goyang-si, Gyeonggido, South Korea

Chungbuk National University Hospital /ID# 277429, Cheongju-si, North Chungcheong, South Korea

Seoul National University Hospital /ID# 277271, Seoul, Seoul Teugbyeolsi, South Korea

Yonsei University Health System Severance Hospital /ID# 277597, Seoul, Seoul Teugbyeolsi, South Korea

Asan Medical Center /ID# 277603, Seoul, Seoul Teugbyeolsi, South Korea

Samsung Medical Center /ID# 277615, Seoul, Seoul Teugbyeolsi, South Korea

Complejo Hospitalario Universitario A Coruña /ID# 276922, A Coruña, A Coruna, Spain

Hospital Regional Universitario de Malaga /ID# 276927, Málaga, Andalusia, Spain

Hospital Clinic de Barcelona /ID# 276878, Barcelona, Spain

Hospital Universitario 12 de Octubre /ID# 277251, Madrid, Spain

Kaohsiung Medical University Chung-Ho Memorial Hospital /ID# 277267, Kaohsiung City, Taiwan

Kaohsiung Chang Gung Memorial Hospital /ID# 277725, Kaohsiung City, Taiwan

Chung Shan Medical University Hospital /ID# 277660, Taichung, Taiwan

Taipei Veterans General Hospital /ID# 277263, Taipei, Taiwan

Linkou Chang Gung Memorial Hospital /ID# 277264, Taoyuan City, Taiwan

Ankara Universitesi Tip Fakultesi Cebeci Hastanesi /ID# 277076, Ankara, Turkey (Türkiye)