A Phase 3, Open-label, Multicenter, Randomized Study of Xaluritamig vs Cabazitaxel or Second Androgen Receptor-Directed Therapy in Subjects With Metastatic Castration-Resistant Prostate Cancer Previously Treated With Chemotherapy

Bookmark
Investigational drug late phase More information Active drug More information Moderate burden on patient More information

Trial Details

Sponsor: Amgen (industry)

Phase: 3

Start date: Dec. 9, 2024

Planned enrollment: 675

Trial ID: NCT06691984
Copy trial ID
More trial details at ClinicalTrials.gov More info

chevron Show Summary from Sponsor

Investigational Drug AI Analysis

chevron Show for: Xaluritamig (AMG 509)

HealthScout AI Analysis

Goal: Compare overall survival of xaluritamig versus investigator’s choice of cabazitaxel or a second androgen receptor–directed therapy in post‑taxane metastatic castration‑resistant prostate cancer (mCRPC).

Patients: Adults with histologically confirmed prostate adenocarcinoma, metastatic castration‑resistant disease with at least one measurable or bone lesion, and evidence of progression per PCWG3. All must be castrate (testosterone <50 ng/dL), have ECOG 0–1, prior progression on at least one AR‑directed agent (enzalutamide, abiraterone, apalutamide, or darolutamide), and have received exactly one taxane in the mCRPC setting; docetaxel in mHSPC is allowed. Key exclusions include prior STEAP1‑targeted therapy, recent anticancer therapy, recent or extensive PSMA radioligand therapy, recent radionuclide therapy, active CNS metastases (stable treated dural metastases allowed), and unresolved >grade 1 toxicities.

Design: Phase 3, open‑label, multicenter, randomized study (allocation 1:1) enrolling approximately 675 participants after chemotherapy in the mCRPC setting. Primary intent is superiority on overall survival. Stratification factors are expected to include prior therapies and disease characteristics; imaging assessments will be centrally reviewed for key efficacy endpoints.

Treatments: Experimental: Xaluritamig administered as intravenous infusion. Xaluritamig (AMG 509) is a first‑in‑class bispecific T‑cell–engaging antibody that binds STEAP1 on prostate cancer cells and CD3 on T cells, using an XmAb 2+1 format to enhance STEAP1 avidity with reduced Fc effector function. Early phase 1 studies in heavily pretreated mCRPC reported PSA50 responses around 49% overall and higher at target doses, with objective responses by RECIST in patients with measurable disease; cytokine release syndrome, typically early and manageable with step‑up dosing and premedication, is the most common adverse event. The 1.5 mg target regimen showed improved activity and an acceptable safety profile and was advanced to phase 3. Control: Investigator’s choice of cabazitaxel IV, or a second AR‑directed therapy (abiraterone or enzalutamide) per standard dosing and labeling.

Outcomes: Primary endpoint: overall survival. Key secondary endpoints include radiographic progression‑free survival by BICR using PCWG3‑modified RECIST v1.1, objective response rate, duration of response, disease control rate, time to response, time to first symptomatic skeletal event, safety and tolerability (TEAEs), patient‑reported outcomes (BPI‑SF pain measures, EQ‑5D‑5L, FACT‑P including time to worsening and improvement), PSA50 and PSA90 response rates, and xaluritamig pharmacokinetics and immunogenicity (Cmax, Tmax, Cmin, AUC, accumulation, half‑life, anti‑drug antibodies). Follow‑up for efficacy and safety is planned for up to approximately 43 months.

Burden on patient: Moderate. Participants will require regular clinic visits for IV infusions, especially in the xaluritamig arm where step‑up dosing and early‑cycle monitoring for cytokine release syndrome may necessitate longer or more frequent visits during initial cycles. Imaging for rPFS by BICR will involve periodic CT/MRI and bone scans at standard mCRPC intervals, comparable to usual care. Safety assessments, laboratory monitoring, and comprehensive PRO instruments add time but are routine for phase 3 mCRPC trials. The xaluritamig arm includes pharmacokinetic and immunogenicity blood draws that increase visit duration and blood sampling, mainly in early cycles; control‑arm burden varies by choice of cabazitaxel IV (higher infusion‑visit burden) versus oral ARDT (lower visit burden). Overall travel and testing are greater than standard oral therapy alone but similar to other phase 3 IV‑based mCRPC studies.

Last updated: Oct 2025

Eligibility More information

chevron Show Criteria

Sites (144)

Sort by distance to:
Clear

Chris OBrien Lifehouse

Camperdown, New South Wales, 2050, Australia

No email / No phone

Status: Recruiting

Macquarie University

North Ryde, New South Wales, 2109, Australia

No email / No phone

Status: Recruiting

Princess Alexandra Hospital

Woolloongabba, Queensland, 4102, Australia

No email / No phone

Status: Recruiting

Monash Medical Centre

Clayton, Victoria, 3168, Australia

No email / No phone

Status: Recruiting

The Alfred Hospital

Melbourne, Victoria, 3004, Australia

No email / No phone

Status: Recruiting

Fiona Stanley Hospital

Murdoch, Western Australia, 6150, Australia

No email / No phone

Status: Recruiting

Krankenhaus der Barmherzigen Brueder Wien

Vienna, 1020, Austria

No email / No phone

Status: Recruiting

Landeskrankenhaus Salzburg

Salzburg, 5020, Austria

No email / No phone

Status: Recruiting

Medizinische Universitaet Graz

Graz, 8036, Austria

No email / No phone

Status: Recruiting

Medizinische Universitaet Innsbruck

Innsbruck, 6020, Austria

No email / No phone

Status: Recruiting

Ordensklinikum Linz Elisabethinen

Linz, 4020, Austria

No email / No phone

Status: Recruiting

Universitaetsklinikum Allgemeines Krankenhaus Wien

Vienna, 1090, Austria

No email / No phone

Status: Recruiting

Universitaetsklinikum Sankt Poelten

Sankt Pölten, 3100, Austria

No email / No phone

Status: Recruiting

Algemeen Ziekenhuis Groeninge - Campus Kennedylaan

Kortrijk, 8500, Belgium

No email / No phone

Status: Recruiting

Centre Hospitalier Universitaire de Liege - Sart Tilman

Liège, 4000, Belgium

No email / No phone

Status: Recruiting

Universitair Ziekenhuis Gent

Ghent, 9000, Belgium

No email / No phone

Status: Recruiting

Universite Catholique de Louvain Cliniques Universitaires Saint Luc

Brussels, 1200, Belgium

No email / No phone

Status: Recruiting

BC Cancer Vancouver

Vancouver, British Columbia, V5Z 4E6, Canada

No email / No phone

Status: Recruiting

Princess Margaret Cancer Centre

Toronto, Ontario, M5G 1Z5, Canada

No email / No phone

Status: Recruiting

CHU de Quebec-Universite Laval

Québec, Quebec, G1R 2J6, Canada

No email / No phone

Status: Recruiting

Sir Mortimer B Davis - Jewish General Hospital

Montreal, Quebec, H3T 1E2, Canada

No email / No phone

Status: Recruiting

Aarhus University Hospital

Aarhus N, 8200, Denmark

No email / No phone

Status: Recruiting

Vejle Sygehus

Vejle, 7100, Denmark

No email / No phone

Status: Recruiting

Centre Antoine Lacassagne

Nice, 06189, France

No email / No phone

Status: Recruiting

Centre Hospitalier Universitaire de Bordeaux - Hopital Saint Andre

Bordeaux, 33075, France

No email / No phone

Status: Recruiting

Centre Hospitalier Universitaire de Grenoble - Hopital Nord Michallon

La Tronche, 38700, France

No email / No phone

Status: Recruiting

Clinique Victor Hugo - Centre Jean Bernard

Le Mans, 72000, France

No email / No phone

Status: Recruiting

Gustave Roussy

Villejuif, 94805, France

No email / No phone

Status: Recruiting

Hopital d Instruction des Armees - Hopital Begin

Saint-Mandé, 94163, France

No email / No phone

Status: Recruiting

Institut Paoli Calmettes

Marseille, 13009, France

No email / No phone

Status: Recruiting

Institut Universitaire du Cancer Toulouse Oncopole

Toulouse, 31059, France

No email / No phone

Status: Recruiting

Charite - Universitaetsmedizin Berlin, Campus Mitte

Berlin, 10117, Germany

No email / No phone

Status: Recruiting

Klinikum rechts der Isar der TUM

München, 81675, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Dresden

Dresden, 01307, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Essen

Essen, 45147, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Hamburg Eppendorf

Hamburg, 20246, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Heidelberg

Heidelberg, 69120, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Jena

Jena, 07747, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Muenster

Münster, 48149, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Schleswig-Holstein - Luebeck

Lübeck, 23538, Germany

No email / No phone

Status: Recruiting

Universitaetsklinikum Wuerzburg

Würzburg, 97078, Germany

No email / No phone

Status: Recruiting

Alexandra Hospital

Athens, 11528, Greece

No email / No phone

Status: Recruiting

Athens Medical Center S.A - Iatriko Amarousiou

Athens, 15125, Greece

No email / No phone

Status: Recruiting

European Interbalkan Medical Center

Thessaloniki, 57001, Greece

No email / No phone

Status: Recruiting

Metropolitan General

Athens, 15562, Greece

No email / No phone

Status: Recruiting

Metropolitan Hospital

Athens, 18547, Greece

No email / No phone

Status: Recruiting

Saint Luke Hospital

Thessaloniki, 55236, Greece

No email / No phone

Status: Recruiting

Queen Mary Hospital, The University of Hong Kong

Hong Kong, Hong Kong

No email / No phone

Status: Recruiting

Azienda Ospedaliera Universitaria San Luigi Gonzaga

Orbassano, 10043, Italy

No email / No phone

Status: Recruiting

Azienda Ospedaliero Universitaria Ospedali Riuniti di Foggia

Foggia, 71122, Italy

No email / No phone

Status: Recruiting

Fondazione IRCCS Istituto Nazionale dei Tumori

Milan, 20133, Italy

No email / No phone

Status: Recruiting

IRCCS Ospedale San Raffaele

Milan, 20132, Italy

No email / No phone

Status: Recruiting

Ospedale Policlinico San Martino IRCCS

Genova, 16132, Italy

No email / No phone

Status: Recruiting

Ospedale Sacro Cuore di Gesù Azienda Sanitaria Locale di Lecce

Gallipoli, 73014, Italy

No email / No phone

Status: Recruiting

Ospedale Santa Chiara "Azienda Provinciale per i Servizi Sanitari Provincia Autonoma di Trento"

Trento, 38122, Italy

No email / No phone

Status: Recruiting

Nagoya University Hospital

Nagoya, Aichi-ken, 466-8560, Japan

No email / No phone

Status: Recruiting

National Hospital Organization Shikoku Cancer Center

Matsuyama, Ehime, 791-0280, Japan

No email / No phone

Status: Recruiting

Gunma University Hospital

Maebashi, Gunma, 371-8511, Japan

No email / No phone

Status: Recruiting

National Hospital Organization Hokkaido Cancer Center

Sapporo, Hokkaido, 003-0804, Japan

No email / No phone

Status: Recruiting

Kanazawa University Hospital

Kanazawa, Ishikawa-ken, 920-8641, Japan

No email / No phone

Status: Recruiting

Yokohama City University Medical Center

Yokohama, Kanagawa, 232-0024, Japan

No email / No phone

Status: Recruiting

Osaka International Cancer Institute

Osaka, Osaka, 541-8567, Japan

No email / No phone

Status: Recruiting

The University of Osaka Hospital

Suita-shi, Osaka, 565-0871, Japan

No email / No phone

Status: Recruiting

Dokkyo Medical University Saitama Medical Center

Koshigaya-shi, Saitama, 343-8555, Japan

No email / No phone

Status: Recruiting

Keio University Hospital

Shinjuku-ku, Tokyo, 160-8582, Japan

No email / No phone

Status: Recruiting

Nippon Medical School Hospital

Bunkyo-ku, Tokyo, 113-8603, Japan

No email / No phone

Status: Recruiting

The Cancer institute Hospital of Japanese Foundation for Cancer Research

Koto-ku, Tokyo, 135-8550, Japan

No email / No phone

Status: Recruiting

Erasmus Medisch Centrum

Rotterdam, 3015 GD, Netherlands

No email / No phone

Status: Recruiting

Radboud Universitair Medisch Centrum

Nijmegen, 6525 GA, Netherlands

No email / No phone

Status: Recruiting

Reinier de Graaf Gasthuis

Delft, 2625 AD, Netherlands

No email / No phone

Status: Recruiting

Universitair Medisch Centrum Groningen

Groningen, 9713 GZ, Netherlands

No email / No phone

Status: Recruiting

SPZOZ Szpital Uniwersytecki w Krakowie

Krakow, 31-501, Poland

No email / No phone

Status: Recruiting

Uniwersyteckie Centrum Kliniczne

Gdansk, 80-214, Poland

No email / No phone

Status: Recruiting

National Cancer Centre Singapore

Singapore, 168583, Singapore

No email / No phone

Status: Recruiting

National University Hospital

Singapore, 119074, Singapore

No email / No phone

Status: Recruiting

Tan Tock Seng Hospital

Singapore, 308433, Singapore

No email / No phone

Status: Recruiting

Asan Medical Center

Seoul, 05505, South Korea

No email / No phone

Status: Recruiting

Chungnam National University Hospital

Daejeon, 35015, South Korea

No email / No phone

Status: Recruiting

National Cancer Center

Goyang-si, Gyeonggi-do, 10408, South Korea

No email / No phone

Status: Recruiting

Seoul National University Bundang Hospital

Seongnam-si, Gyeonggi-do, 13620, South Korea

No email / No phone

Status: Recruiting

Seoul National University Hospital

Seoul, 03080, South Korea

No email / No phone

Status: Recruiting

Severance Hospital Yonsei University Health System

Seoul, 03722, South Korea

No email / No phone

Status: Recruiting

Hospital Clinico San Carlos

Madrid, 28040, Spain

No email / No phone

Status: Recruiting

Hospital Universitario 12 de Octubre

Madrid, 28041, Spain

No email / No phone

Status: Recruiting

Institut Catala d Oncologia Hospitalet Hospital Duran i Reynals

Barcelona, 08908, Spain

No email / No phone

Status: Recruiting

Hospital Regional Universitario de Malaga

Málaga, Andalusia, 29011, Spain

No email / No phone

Status: Recruiting

Hospital Universitario Virgen del Rocio

Seville, Andalusia, 41013, Spain

No email / No phone

Status: Recruiting

Hospital Clinic i Provincial de Barcelona

Barcelona, Catalonia, 08036, Spain

No email / No phone

Status: Recruiting

Hospital Universitari Vall d Hebron

Barcelona, Catalonia, 08035, Spain

No email / No phone

Status: Recruiting

Hospital de la Santa Creu i Sant Pau

Barcelona, Catalonia, 08041, Spain

No email / No phone

Status: Recruiting

Clinica Universidad de Navarra

Pamplona, Navarre, 31008, Spain

No email / No phone

Status: Recruiting

Instituto Valenciano de Oncologia

Castellon, Valencia, 12002, Spain

No email / No phone

Status: Recruiting

Karolinska Universitetssjukhuset

Stockholm, 171 76, Sweden

No email / No phone

Status: Recruiting

Norrlands Universitetssjukhus

Umeå, 901 85, Sweden

No email / No phone

Status: Recruiting

Sahlgrenska Universitetssjukhuset

Gothenburg, 413 45, Sweden

No email / No phone

Status: Recruiting

Skanes Universitetssjukhus

Lund, 221 85, Sweden

No email / No phone

Status: Recruiting

Centre Hospitalier Universitaire Vaudois

Lausanne, 1011, Switzerland

No email / No phone

Status: Recruiting

Inselspital Bern

Bern, 3010, Switzerland

No email / No phone

Status: Recruiting

Istituto Oncologico della Svizzera Italiana

Bellinzona, 6500, Switzerland

No email / No phone

Status: Recruiting

Kantonsspital Graubuenden

Chur, 7000, Switzerland

No email / No phone

Status: Recruiting

Kantonsspital Sankt Gallen

Sankt Gallen, 9007, Switzerland

No email / No phone

Status: Recruiting

Kaohsiung Medical University Chung-Ho Memorial Hospital

Kaohsiung City, 80756, Taiwan

No email / No phone

Status: Recruiting

Linkou Chang Gung Memorial Hospital of Chang Gung Medical Foundation

Taoyuan District, 33305, Taiwan

No email / No phone

Status: Recruiting

National Cheng Kung University Hospital

Tainan City, 70403, Taiwan

No email / No phone

Status: Recruiting

National Taiwan University Hospital

Taipei, 10002, Taiwan

No email / No phone

Status: Recruiting

Taichung Veterans General Hospital

Taichung, 40705, Taiwan

No email / No phone

Status: Recruiting

Bagcilar Medipol Mega Universite Hastanesi

Istanbul, 34214, Turkey (Türkiye)

No email / No phone

Status: Recruiting

Izmir Ekonomi Universitesi Medical Point Hastanesi

Izmir, 35575, Turkey (Türkiye)

No email / No phone

Status: Recruiting

Beatson West of Scotland Cancer Centre

Glasgow, G12 0YN, United Kingdom

No email / No phone

Status: Recruiting

Guys Hospital

London, SE1 9RY, United Kingdom

No email / No phone

Status: Recruiting

Royal Marsden Hospital

Sutton, SM2 5PT, United Kingdom

No email / No phone

Status: Recruiting

Sarah Cannon Research Institute UK

London, W1G 6AD, United Kingdom

No email / No phone

Status: Recruiting

University College London Hospital

London, NW1 2PG, United Kingdom

No email / No phone

Status: Recruiting

City of Hope National Medical Center

Duarte, California, 91010, United States

No email / No phone

Status: Recruiting

Providence Saint Jude Medical Center

Fullerton, California, 92835, United States

No email / No phone

Status: Recruiting

University of California Irvine

Irvine, California, 92697, United States

No email / No phone

Status: Recruiting

AdventHealth Orlando

Orlando, Florida, 32804, United States

No email / No phone

Status: Recruiting

University of Florida, College of Medicine

Gainesville, Florida, 32610, United States

No email / No phone

Status: Recruiting

University of Chicago

Chicago, Illinois, 60637, United States

No email / No phone

Status: Recruiting

Indiana University

Indianapolis, Indiana, 46202, United States

No email / No phone

Status: Recruiting

Norton Cancer Institute

Louisville, Kentucky, 40207, United States

No email / No phone

Status: Recruiting

University of Louisville Health - James Graham Brown Cancer Center

Louisville, Kentucky, 40202, United States

No email / No phone

Status: Recruiting

Beth Israel Deaconess Medical Center

Boston, Massachusetts, 02215, United States

No email / No phone

Status: Recruiting

Dana-Farber Cancer Institute

Boston, Massachusetts, 02215, United States

No email / No phone

Status: Recruiting

Massachusetts General Hospital

Boston, Massachusetts, 02114, United States

No email / No phone

Status: Recruiting

Henry Ford Hospital, Henry Ford Health Systems

Detroit, Michigan, 48202, United States

No email / No phone

Status: Recruiting

University of Minnesota

Minneapolis, Minnesota, 55455, United States

No email / No phone

Status: Recruiting

Washington University

St Louis, Missouri, 63110, United States

No email / No phone

Status: Recruiting

Montefiore Medical Center

The Bronx, New York, 10467, United States

No email / No phone

Status: Recruiting

Duke University

Durham, North Carolina, 27710, United States

No email / No phone

Status: Recruiting

Levine Cancer Institute

Charlotte, North Carolina, 28204, United States

No email / No phone

Status: Recruiting

Sanford Roger Maris Cancer Center

Fargo, North Dakota, 58122, United States

No email / No phone

Status: Recruiting

Cleveland Clinic Foundation

Cleveland, Ohio, 44195, United States

No email / No phone

Status: Recruiting

The Ohio State University

Columbus, Ohio, 43210, United States

No email / No phone

Status: Recruiting

Fox Chase Cancer Center

Philadelphia, Pennsylvania, 19111, United States

No email / No phone

Status: Recruiting

Thomas Jefferson University Hospital

Philadelphia, Pennsylvania, 19107, United States

No email / No phone

Status: Recruiting

University of Pittsburgh Medical Center

Pittsburgh, Pennsylvania, 15232, United States

No email / No phone

Status: Recruiting

Sanford Oncology Clinic and Pharmacy

Sioux Falls, South Dakota, 57104, United States

No email / No phone

Status: Recruiting

Sarah Cannon Research Institute

Nashville, Tennessee, 37203, United States

No email / No phone

Status: Recruiting

Tennessee Oncology PLLC

Nashville, Tennessee, 37203, United States

No email / No phone

Status: Recruiting

University of Texas MD Anderson Cancer Center

Houston, Texas, 77030, United States

No email / No phone

Status: Recruiting

Virginia Oncology Associates

Norfolk, Virginia, 23502, United States

No email / No phone

Status: Recruiting

Swedish Medical Center

Seattle, Washington, 98104, United States

No email / No phone

Status: Recruiting

University of Wisconsin Carbone Cancer Center

Madison, Wisconsin, 53705, United States

No email / No phone

Status: Recruiting

Back to trials list