A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Antitumor Activity of ADCT-901 in Participants With Selected Advanced Solid Tumors

(START) Madrid - Hospital Universitario Fundación Jiménez Díaz Location, Madrid

Universidad Complutense de Madrid - Hospital Universitario 12 de Octubre, Madrid

Emory University, Winship Cancer Institute, Atlanta

University Hospitals of Cleveland Medical Center (UHCMC), Cleveland

Northwestern University, Chicago

Sarah Cannon at University of Oklahoma Health Sciences Center, Oklahoma City

NEXT Oncology, San Antonio

Sarah Cannon at HealthONE, Denver

Yale Cancer Center, New Haven

Institut Catala D'oncologia (ICO) - Hospital Duran I Reynals Location, Badalona

Hospital Universitari Vall D'hebron - Vall D'hebron Institut D'oncologia (VHIO), Barcelona

Imperial College Healthcare NHS Trust - St Mary's Hospital, London

Sarah Cannon Research Institute (SCRI) - London (SCRI-UK), London