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Xaluritamig

Phase 3

Metastatic Castration-resistant Prostate Cancer | Small molecule | Oncology |Amgen Inc.|Last Updated: Sep 4, 2026

Success Probability

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Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials2
Total Enrollment1,457

FDA Designations

No designations recorded

Clinical trial landscape

Xaluritamig · 7 trials · 8 indications

Phase 3 2Phase 1 5
NCT07213674A Study of Xaluritamig Plus Abiraterone Versus Investigator's Choice in Participants With Chemotherapy-naïve Metastatic Castration-resistant Prostate CancerMetastatic Castration-resistant Prostate Cancer
RECRUITING750 Analytics
NCT06691984Phase 3 Study of Xaluritamig vs Cabazitaxel or Second Androgen Receptor-Directed Therapy in Participants With Progressive Metastatic Castration-Resistant Prostate Cancer (XALute)Metastatic Castration-resistant Prostate Cancer
ACTIVE NOT_RECRUITING707 Analytics
PHASE3RECRUITING
A Study of Xaluritamig Plus Abiraterone Versus Investigator's Choice in Participants With Chemotherapy-naïve Metastatic Castration-resistant Prostate Cancer
Metastatic Castration-resistant Prostate CancerUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Phase 3 Study of Xaluritamig vs Cabazitaxel or Second Androgen Receptor-Directed Therapy in Participants With Progressive Metastatic Castration-Resistant Prostate Cancer (XALute)
Metastatic Castration-resistant Prostate CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

OS
Up to approximately 51 months
Overall Survival (OS)
Up to approximately 53 months
Number of Participants with Treatment-emergent Adverse Events
Up to 3.6 Year

This will include treatment-emergent adverse events, serious adverse events, treatment-related adverse events, and fatal adverse events.

Number of Participants Experiencing a Dose-limiting Toxicity (DLT) (Part 1 Only)
Up to 42 days
Number of Participants with Treatment-related Adverse Events
Up to approximately 2.5 years
Number of Participants with Clinically Significant Changes in Vital Signs
Up to approximately 2.5 years
Number of Participants with Clinically Significant Changes in Clinical Laboratory Tests
Up to approximately 2.5 years
Number of Participants who Experienced Treatment-emergent Adverse Events
Up to 45 months

Inclusive of adverse events, serious adverse events, and changes in vital signs and clinical laboratory tests.

Number of Participants who Experienced Treatment-related Adverse Events
Up to 28 months
Number of Participants who Received Radical Prostatectomy After Completing Xaluritamig Treatment
Up to 25 months
Number of Participants who Experienced Complications of Radical Prostatectomy According to Clavien-Dindo Classification
Up to 28 months
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)
Up to approximately 2 years

Events categorized as adverse events (AEs) starting on or after first dose of investigational product (xaluritamig) as determined by the flag indicating if the AE started prior to the first dose on the Events Electronic Case Report Form (eCRF) and including 30 days after the last dose of investigational product (xaluritamig) or end of study date, whichever is earlier.

Number of Participants Experiencing Treatment-related Adverse Events (TRAEs)
Up to approximately 2 years

A TRAE is any TEAE that per investigators' review has a reasonable possibility of being caused by the investigational product (xaluritamig) determined by the flag indicating an event may have been caused by the investigational product (xaluritamig) on the Events eCRF. In the unlikely event that the flag is missing, the TEAE will be considered related.

Secondary Endpoints

Radiographic Progression-free Survival (rPFS) Per Prostate Cancer Working Group 3 (PCWG3)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1), Per Investigator Assessment
Up to approximately 51 months
Objective Response per Modified RECIST 1.1, Per Investigator Assessment
Up to approximately 51 months
Duration of Response (DOR) Per Modified RECIST 1.1, Per Investigator Assessment
Up to approximately 51 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Xaluritamig Plus AbirateroneEXPERIMENTALParticipants will be randomized to receive xaluritamig in combination with abiraterone acetate.
Investigator's ChoiceACTIVE_COMPARATORParticipants will receive investigator's choice of: * Abiraterone acetate orally, once daily or * Docetaxel IV Q3W or * Cabazitaxel IV Q3W.
XaluritamigEXPERIMENTALParticipants with metastatic castration-resistant prostate cancer (mCRPC) will be randomized to receive Xaluritamig as an intravenous (IV) infusion.
Cabazitaxel/Abiraterone/EnzalutamideACTIVE_COMPARATORParticipants with mCRPC will be randomized to receive cabazitaxel as an IV infusion, or a second androgen receptor-directed therapy of either abiraterone as oral tablets, or enzalutamide as oral tablets at the investigator's discretion.
Xaluritamig Proposed RegimenEXPERIMENTALParticipants will be dosed at the proposed regimen until disease progression or discontinuation of study treatment.
Part 1 (Dose Confirmation)EXPERIMENTALPart 1 will begin with a pre-specified xaluritamig target dose and frequency. Multiple dose levels and/or alternative dose regimens may be explored in parallel to determine 1 or more recommended doses for expansion, which is/are considered safe, based on emerging data.
Part 2 (Dose Expansion)EXPERIMENTALParticipants will be treated in Part 2 after the recommended doses for expansion for xaluritamig are determined in Part 1 to further characterize preliminary antitumor activity and safety.
Xaluritamig with DarolutamideEXPERIMENTALParticipants will receive xaluritamig in combination with darolutamide. Participants will enter long-term follow-up for up to 3 years from the first dose of study treatment, or until withdrawal of consent, lost to follow-up, or participant death, whichever occurs first.
Xaluritamig with AbirateroneEXPERIMENTALParticipants will receive xaluritamig in combination with abiraterone. Participants will enter long-term follow-up for up to 3 years from the first dose of study treatment, or until withdrawal of consent, lost to follow-up, or participant death, whichever occurs first.
Cohort A - XaluritamigEXPERIMENTALXaluritamig will be administered prior to radical prostatectomy.
Cohort B - Xaluritamig with an Oral GnRH AntagonistEXPERIMENTALXaluritamig will be administered prior to radical prostatectomy. Participants will also receive an oral GnRH antagonist continuously up to the time of planned radical prostatectomy.

Interventions

NameTypeDescription
XaluritamigDRUGXaluritamig will be administered IV.
Abiraterone acetateDRUGAbiraterone acetate will be administered orally.
DocetaxelDRUGDocetaxel will be administered IV.
CabazitaxelDRUGCabazitaxel will be administered IV.
AbirateroneDRUGOral tablets
EnzalutamideDRUGOral tablets
DarolutamideDRUGParticipants will receive darolutamide orally.
GnRH AntagonistDRUGOral administration
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Eligibility Criteria

Age Range18 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites151

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, patholo...

Countries:United StatesAustraliaAustriaBelgiumCanadaFranceGermanyGreeceItalyJapanNetherlandsPortugalSingaporeSouth KoreaSpainSwitzerlandTaiwanUnited KingdomDenmarkHong KongPolandSwedenTurkey (Türkiye)
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Recent Changes (Last 90 Days)

MEDIUMSep 4, 2026NCT06555796primaryCompletionDate: changed
MEDIUMSep 4, 2026NCT06555796primaryCompletionDate: changed
LOWAug 27, 2026NCT07213674lastUpdatePostDate: changed
LOWAug 27, 2026NCT07213674lastUpdatePostDate: changed
LOWAug 21, 2026NCT07297979lastUpdatePostDate: changed
LOWAug 21, 2026NCT07213674lastUpdatePostDate: changed
LOWAug 21, 2026NCT07297979lastUpdatePostDate: changed
LOWAug 21, 2026NCT07213674lastUpdatePostDate: changed
LOWAug 14, 2026NCT07213674lastUpdatePostDate: changed
LOWAug 14, 2026NCT07213674lastUpdatePostDate: changed
LOWAug 14, 2026NCT07213674lastUpdatePostDate: changed
LOWAug 7, 2026NCT07493512lastUpdatePostDate: changed
LOWAug 7, 2026NCT07493512lastUpdatePostDate: changed
LOWJul 31, 2026NCT06613100primaryCompletionDate: changed
LOWJul 31, 2026NCT06613100primaryCompletionDate: changed
LOWJul 24, 2026NCT07493512lastUpdatePostDate: changed
LOWJul 24, 2026NCT07213674lastUpdatePostDate: changed
LOWJul 24, 2026NCT07493512lastUpdatePostDate: changed
LOWJul 24, 2026NCT07213674lastUpdatePostDate: changed
LOWJul 17, 2026NCT07297979lastUpdatePostDate: changed

Frequently asked questions about Xaluritamig

What is Xaluritamig used for?

Xaluritamig is an investigational oncology therapy being studied for several prostate cancer indications, including metastatic castration-resistant prostate cancer (mCRPC) and metastatic hormone-sensitive prostate cancer (mHSPC). It is also being evaluated in relapsed or refractory Ewing sarcoma. The drug is in clinical development and is not yet approved.

Who makes Xaluritamig?

Xaluritamig is being developed by Amgen Inc., a biopharmaceutical company traded on NASDAQ under the ticker symbol AMGN. Amgen is conducting multiple clinical trials to evaluate the safety and efficacy of Xaluritamig across different cancer types.

What phase is Xaluritamig in?

Xaluritamig is in Phase 1 and Phase 3 clinical trials. It is an investigational drug, meaning it has not received regulatory approval and is still being studied for safety and effectiveness in patients with prostate cancer and Ewing sarcoma.

What clinical trials is Xaluritamig in?

Xaluritamig is being studied in several trials, including NCT06691984, a Phase 3 study comparing it to cabazitaxel or second androgen receptor-directed therapy in progressive mCRPC. NCT07213674 is a Phase 3 trial combining Xaluritamig with abiraterone. NCT07140900 is a Phase 1 combination study in mHSPC, and NCT07297979 evaluates it in Ewing sarcoma.

Is Xaluritamig being studied in combination with other drugs?

Yes, Xaluritamig is being evaluated in combination with androgen receptor pathway inhibitors in metastatic hormone-sensitive prostate cancer. A Phase 3 trial is also studying Xaluritamig plus abiraterone versus investigator's choice in chemotherapy-naïve metastatic castration-resistant prostate cancer.

What is the enrollment and design of Xaluritamig trials?

The Xaluritamig clinical program includes trials with total enrollment of 1,457 participants. The studies are controlled but not randomized or double-blinded. They are open-label trials enrolling male patients aged 18 years and older for prostate cancer studies, and one trial includes children as young as 2 years for Ewing sarcoma.