NCT07225946 · Janssen Research & Development, LLC
A Study of Pasritamig With Docetaxel Versus Docetaxel in Participants With Metastatic Castration-Resistant Prostate Cancer
(KLK2-PASenger)
What this study is about
The purpose of this study is to find out whether treatment with pasritamig and docetaxel prolongs radiographic time without the disease getting worse (rPFS) (the length of time from start of treatment until disease worsens as determined by scans) when compared to treatment with docetaxel in participants with metastatic castrate-resistant prostate cancer (mCRPC; a cancer of prostate, a male reproductive gland found below the bladder, that grows despite low levels of male hormones).
View original scientific description
The purpose of this study is to find out whether treatment with pasritamig and docetaxel prolongs radiographic progression free survival (rPFS) (the length of time from start of treatment until disease worsens as determined by scans) when compared to treatment with docetaxel in participants with metastatic castrate-resistant prostate cancer (mCRPC; a cancer of prostate, a male reproductive gland found below the bladder, that grows despite low levels of male hormones).
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Have histologically confirmed adenocarcinoma of the prostate
- Have disease that is metastatic at the time of the screening as determined by the investigator
- Participants must receive ongoing androgen deprivation therapy (ADT) with a gonadotropin releasing hormone (GnRH) analog throughout the treatment or have had prior bilateral orchiectomy, and have serum testosterone less than or equal to (\<=) 50 nanogram per milliliter (ng/dL) (\<= 1.73 nanomoles per Liter \[nmol/L\]) at screening
- Have progressed on at least 1 novel androgen receptor pathway inhibition (ARPI) but received no more than 2 different ARPI for any stage of disease. Must have discontinued ARPI before randomization into the study
- Have an eastern cooperative oncology group (ECOG) performance status of 0 to 1
Exclusion criteria
- Known history of either brain or leptomeningeal prostate cancer metastases
- Participants with known breast cancer gene 1/2 (BRCA 1/2) mutations (germline or somatic) who have not received treatment with a poly (ADP-ribose) polymerase (PARP) inhibitor, unless not available or contraindicated
- Prior or concurrent second malignancy (other than the disease under study) because the natural history or treatment could interfere with study endpoints
- Received cytotoxic chemotherapy for prostate cancer in any setting
- Received prior treatment with human kallikrein 2 (KLK-2) directed therapies
Where
- Chandler, Arizona
- Little Rock, Arkansas
- Fountain Valley, California
- La Jolla, California
- Los Angeles, California
- Riverside, California
- San Diego, California
- Santa Monica, California
- Aurora, Colorado
- Grand Junction, Colorado
- Lakewood, Colorado
- Sarasota, Florida
And 33 more locations — see the full list below.
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 5, 2026 · Source of record for eligibility and locations