A Study of HER3-DXd in Subjects With Locally Advanced or Metastatic Solid Tumors — StellaPhase 2 — Testing in a larger group (up to a few hundred people) to further evaluate safety and begin to assess effectiveness.
Trial locations(84 sites)
United States
City of Hope, Duarte, California Yale Cancer Center, New Haven, Connecticut AdventHealth Medical Group Oncology Research at Celebration, Kissimmee, Florida University of Illinois Cancer Center, Chicago, Illinois Johns Hopkins University, Baltimore, Maryland Health Partners Frauenshuh Cancer Center, Saint Louis Park, Minnesota Health Partners Cancer Center at Regions Hospital, Saint Paul, Minnesota Washington University, School of Medicine, St Louis, Missouri Roswell Park Cancer Institute IDS, Buffalo, New York Memorial Sloan Kettering Hospital, New York, New York SCRI Oncology Partners, Nashville, Tennessee The University of Texas MD Anderson Cancer Center, Houston, Texas Fred Hutchinson Cancer Center, Seattle, Washington Australia
Chris O'Brien Lifehouse, Camperdown Icon Cancer Centre Chermside, Chermside Monash Medical Centre Clayton, Clayton Icon Cancer Centre Hobart, Hobart Icon Cancer Centre Townsville, Hyde Park Belgium
Cliniques Universitaires Saint-Luc, Brussels Universitair Ziekenhuis Gent, Ghent Universitair Ziekenhuis Brussel, Jette Canada
Cross Cancer Institute, Edmonton, Alberta Sunnybrook Research Institute, Toronto Princess Margaret Cancer Centre, Toronto BC Cancer - Vancouver, Vancouver China
Sun Yat-sen University Cancer Center, Guangzhou France
Centre Georges Franăois Leclerc, Dijon Hopital Claude Huriez - Chu Lille, Lille Hăpital de La Timone, Marseille Chu Nantes - Hătel Dieu, Nantes Institut Claudius Regaud, Toulouse ICL - Alexis Vautrin, Vandœuvre-lès-Nancy Institut Gustave Roussy, Villejuif Germany
Krankenhaus Nordwest GmbH, Frankfurt Hungary
Bacs-Kiskun Varmegyei Oktatokorhaz, Kecskemét Italy
Humanitas Gavazzeni, Bergamo IRCCS Ospedale Policlinico San Martino, Genova AOU Federico II - Oncologia Clinica, Naples Centro Ricerche Cliniche di Verona s.r.l., Verona Japan
Saitama Medical University International Medical Center, Hidaka National Cancer Center Hospital East, Kashiwa-shi NHO Shikoku Cancer Center, Matsuyama Shizuoka Cancer Center, Nagaizumi-cho Aichi Cancer Center Hospital, Nagoya Kindai University Hospital, Osakasayama-shi National Cancer Center Hospital, Tokyo Cancer Institute Hospital of JFCR, Tokyo Yokohama City University Medical Center, Yokohama Netherlands
Amsterdam UMC locatie Vumc, Amsterdam Universitair Medisch Centrum Groningen, Groningen Leids Universitair Medisch Centrum, Leiden Maastricht University Medical Center, Maastricht Radboud University Medical Center, Nijmegen Norway
Akershus universitetssykehus, Lørenskog Haukeland universitetssjukehus, Lørenskog Oslo Universitetssykehus HF, Radiumhospitalet, Oslo South Korea
Cha Bundang Medical Center, Cha University, Seongnam Seoul National University Bundang Hospital, Seongnam Seoul National University Hospital, Seoul Severance Hospital, Yonsei University Health System, Seoul Asan Medical Center, Seoul Samsung Medical Center, Seoul Spain
Hospital Universitari Vall D'Hebron, Barcelona Hospital Clinic de Barcelona, Barcelona Hospital de La Santa Creu I Sant Pau, Barcelona Hospital General Universitario Gregorio Marañon, Madrid Hospital Universitario Ramon Y Cajal, Madrid Hospital Universitario 12 de Octubre, Madrid HOSPITAL REGIONAL UNIVERSITARIO de MALAGA AVDA., Málaga Hospital Universitario Virgen Macarena, Seville Hospital Clinico Universitario de Valencia, Valencia Taiwan
Kaohsiung Chang Gung Memorial Hospital, Kaohsiung City National Cheng Kung University Hospital, Tainan National Taiwan University Hospital, Taipei Taipei Veterans General Hospital, Taipei Chang Gung Memorial Hospital, Taoyuan District United Kingdom
University Hospital Coventry, Coventry Royal Free Hospital, London Nottingham City Hospital Campus, Nottingham Last updated January 2026