A Study of Xaluritamig Plus Abiraterone Versus Investigator's Choice in Participants With Chemotherapy-naïve Metastatic Castration-resistant Prostate Cancer

NCT ID: NCT07213674

Last Updated: 2026-01-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

750 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-11-28

Study Completion Date

2032-08-30

Brief Summary

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The primary objective of this study is to compare overall survival (OS) in participants receiving xaluritamig plus abiraterone against investigator's choice (docetaxel, cabazitaxel, or abiraterone).

Detailed Description

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Conditions

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Metastatic Castration-resistant Prostate Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Xaluritamig Plus Abiraterone

Participants will be randomized to receive xaluritamig in combination with abiraterone acetate.

Group Type EXPERIMENTAL

Xaluritamig

Intervention Type DRUG

Xaluritamig will be administered IV.

Abiraterone acetate

Intervention Type DRUG

Abiraterone acetate will be administered orally.

Investigator's Choice

Participants will receive investigator's choice of:

* Abiraterone acetate orally, once daily or
* Docetaxel IV Q3W or
* Cabazitaxel IV Q3W.

Group Type ACTIVE_COMPARATOR

Abiraterone acetate

Intervention Type DRUG

Abiraterone acetate will be administered orally.

Docetaxel

Intervention Type DRUG

Docetaxel will be administered IV.

Cabazitaxel

Intervention Type DRUG

Cabazitaxel will be administered IV.

Interventions

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Xaluritamig

Xaluritamig will be administered IV.

Intervention Type DRUG

Abiraterone acetate

Abiraterone acetate will be administered orally.

Intervention Type DRUG

Docetaxel

Docetaxel will be administered IV.

Intervention Type DRUG

Cabazitaxel

Cabazitaxel will be administered IV.

Intervention Type DRUG

Other Intervention Names

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AMG 509

Eligibility Criteria

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Inclusion Criteria

* Participant has provided informed consent before initiation of any study-specific activities/procedures.
* Age ≥ 18 years (or ≥ legal age within the country if it is older than 18 years) at the time of signing the informed consent.
* Participant must have histological, pathological, and/or cytological confirmation of adenocarcinoma of the prostate. Mixed histologies (eg, adenocarcinoma with neuroendocrine component) are not permitted.
* Metastatic castration-resistant prostate cancer (mCRPC) with ≥ 1 metastatic lesion that is present on baseline computed tomography (CT), magnetic resonance imaging (MRI), or bone scan imaging obtained within 28 days before enrollment.
* Evidence of progressive disease (PD), defined as 1 or more PCWG3-modified RECIST 1.1 criteria:

* Serum PSA progression is defined as 2 consecutive increases in PSA over a previous reference value measured at least 1 week prior. The minimum start value is 2.0 ng/mL.
* Soft-tissue progression defined as an increase ≥ 20% in the sum of the diameter (SOD) (short axis for nodal lesions and long axis for non-nodal lesions) of all target lesions based on the smallest SOD since treatment started or the appearance of 1 or more new lesions or unequivocal progression of existing non-target lesions.
* Progression of bone disease defined by the appearance of at least 2 new bone lesions(s) by bone scan (as per the 2+2 PCWG3-modified RECIST 1.1 criteria).
* Participants must have had prior orchiectomy and/or ongoing androgen-deprivation therapy (ADT) and a castrate level of serum testosterone (\< 50 ng/dL or \< 1.7 nmol/L).
* Prior disease progression on 1, and only 1, androgen receptor pathway inhibitor (ARPI) (either enzalutamide, apalutamide, or darolutamide) is required.
* Participants intended to receive cabazitaxel must have previously received ≤ 6 cycles of docetaxel in the metastatic hormone-sensitive prostate cancer (mHSPC) setting.
* Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1.
* Adequate organ function.

Exclusion Criteria

Disease Related:

* Participants with a history of central nervous system (CNS) metastases.
* Unresolved toxicities from prior antitumor therapy not having resolved to CTCAE version 5.0 grade 1 or baseline, with the exception of alopecia or toxicities that are stable and well-controlled AND there is an agreement to allow inclusion by both the investigator and the sponsor.

Prior/Concomitant Therapy:

* Prior six transmembrane epithelial antigen of the prostate 1 (STEAP1)-targeted therapy.
* Prior disease progression on or intolerance to abiraterone.
* Prior treatment with any chemotherapy regimen in the mCRPC setting and/or \> 6 cycles of docetaxel treatment in the mHSPC setting.
* Any anticancer therapy, immunotherapy, or investigational agent within 4 weeks before first dose of study treatment, not including androgen suppression therapy (eg, luteinizing hormone-releasing hormone/gonadotropin releasing hormone \[LHRH/GnRH\] analogue \[agonist/antagonist\]).
* Prior Prostate-Specific Membrane Antigen (PSMA) radioligand therapy (RLT) within 3 months of first dose of study treatment. Participants who received \< 2 cycles of PSMA RLT within 6 weeks of first dose of study treatment are also excluded.
* Prior radionuclide therapy (radium-223) within 2 months of first dose of study treatment.
* Prior palliative radiotherapy within 2 weeks before first dose of study treatment. Participants must have recovered from all radiation-related toxicities.
* Concurrent cytotoxic chemotherapy, ARPI, immunotherapy, RLT, poly adenosine diphosphate ribose polymerase (PARP) inhibitor, biological therapy, investigational therapy.
* Treatment with live and live-attenuated vaccines within 4 weeks before the first dose of study treatment.
Minimum Eligible Age

18 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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Amgen

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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MD

Role: STUDY_DIRECTOR

Amgen

Locations

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City of Hope National Medical Center

Duarte, California, United States

Site Status RECRUITING

City of Hope Orange County Lennar Foundation Cancer Center

Duarte, California, United States

Site Status RECRUITING

University of Illinois Chicago

Chicago, Illinois, United States

Site Status RECRUITING

Norton Cancer Institute

Louisville, Kentucky, United States

Site Status RECRUITING

Hightower Clinical

Oklahoma City, Oklahoma, United States

Site Status RECRUITING

Calvary Mater Newcastle Hospital

Waratah, New South Wales, Australia

Site Status RECRUITING

Icon Cancer Care Wesley

Herston, Queensland, Australia

Site Status RECRUITING

Monash Medical Centre

Clayton, Victoria, Australia

Site Status RECRUITING

Universitaetsklinikum Sankt Poelten

Sankt Pölten, , Austria

Site Status RECRUITING

Krankenhaus der Barmherzigen Brueder Wien

Vienna, , Austria

Site Status RECRUITING

Universitatsklinikum Jena

Jena, , Germany

Site Status RECRUITING

Athens Medical Center S.A - Iatriko Amarousiou

Marousi, , Greece

Site Status RECRUITING

European Interbalkan Medical Center

Thessaloniki, , Greece

Site Status RECRUITING

Fondazione IRCCS Istituto Nazionale dei Tumori

Milan, , Italy

Site Status RECRUITING

Nippon Medical School Hospital

Bunkyo-ku, Tokyo, Japan

Site Status RECRUITING

The Cancer institute Hospital of Japanese Foundation for Cancer Research

Koto-ku, Tokyo, Japan

Site Status RECRUITING

Unidade Local de Saude de Santa Maria, EPE - Hospital de Santa Maria

Lisbon, , Portugal

Site Status RECRUITING

Unidade Local de Saude de Sao Joao, EPE - Hospital de Sao Joao

Porto, , Portugal

Site Status RECRUITING

National University Hospital

Singapore, , Singapore

Site Status RECRUITING

National Cancer Centre Singapore

Singapore, , Singapore

Site Status RECRUITING

Seoul National University Hospital

Seoul, , South Korea

Site Status RECRUITING

Severance Hospital Yonsei University Health System

Seoul, , South Korea

Site Status RECRUITING

Asan Medical Center

Seoul, , South Korea

Site Status RECRUITING

Hospital de la Santa Creu i Sant Pau

Barcelona, Catalonia, Spain

Site Status RECRUITING

Hospital Clinico San Carlos

Madrid, , Spain

Site Status RECRUITING

Centre Hospitalier Universitaire Vaudois

Lausanne, , Switzerland

Site Status RECRUITING

Kantonsspital Sankt Gallen

Sankt Gallen, , Switzerland

Site Status RECRUITING

Hirslanden Zurich

Zurich, , Switzerland

Site Status RECRUITING

Taichung Veterans General Hospital

Taichung, , Taiwan

Site Status RECRUITING

Sarah Cannon Research Institute UK

London, , United Kingdom

Site Status RECRUITING

Royal Marsden Hospital

Sutton, , United Kingdom

Site Status RECRUITING

Countries

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United States Australia Austria Germany Greece Italy Japan Portugal Singapore South Korea Spain Switzerland Taiwan United Kingdom

Central Contacts

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Amgen Call Center

Role: CONTACT

866-572-6436

Related Links

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http://www.amgentrials.com

AmgenTrials clinical trials website

Other Identifiers

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20230239

Identifier Type: -

Identifier Source: org_study_id

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