NCT05818683 · Janssen Research & Development, LLC
A Study of Pasritamig (JNJ-78278343) in Combination With Other Agents for Metastatic Prostate Cancer
What this study is about
The purpose of this study is to identify the recommended phase 2 regimen(s) RP2R(s) of pasritamig and combination regimens in Part 1 (gradually increasing doses) and to determine safety at the putative RP2R(s) of pasritamig with the combination regimens in Part 2 (dose expansion).
View original scientific description
The purpose of this study is to identify the recommended phase 2 regimen(s) RP2R(s) of pasritamig and combination regimens in Part 1 (dose escalation) and to determine safety at the putative RP2R(s) of pasritamig with the combination regimens in Part 2 (dose expansion).
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
- Part 1 A-G, 1I, 1J, and 1K (all combination treatments) and Parts 2B-C (cabazitaxel, docetaxel): Metastatic castration-resistant prostate cancer (mCRPC) with confirmed adenocarcinoma of the prostate as defined by prostate cancer working group 3 (PCWG3); Parts 2D-G, 2I, 2J, and 2K (apalutamide, enzalutamide, darolutamide, abiraterone acetate + prednisone \[AAP\], lutetium Lu-177 vipivotide tetraxetan, JNJ-101556143): mCRPC: Histologically confirmed adenocarcinoma of the prostate as defined by PCWG3, with a minimum PSA of 2 nanogram \[ng\]/milliliter (mL); Part 2H (apalutamide): metastatic hormone-sensitive prostate cancer(mHSPC) with PSA greater than (\>) 0.2 ng/mL on 6 to 24 months of treatment with a next generation ARPI (apalutamide, enzalutamide, darolutamide, or abiraterone)
- Measurable or evaluable disease, except for Part 2H
- (a) Part 1A (cetrelimab) - Prior treatment for mCRPC with at least 1 prior androgen receptor pathway inhibitors (ARPI) (that is, abiraterone acetate, apalutamide, enzalutamide, darolutamide), or chemotherapy (example, docetaxel). (b) Part 1C and 2C (docetaxel), Part 1D (apalutamide), Part 1E and 2E (enzalutamide), Part 1F and 2F (darolutamide), and Part 1G, 2G (AAP), and Part 1K \& 2K (JNJ-101556143)- Prior treatment with at least 1 prior ARPI (that is, apalutamide, enzalutamide, darolutamide, or abiraterone acetate). (C) Part 1B and 2B (cabazitaxel) - Prior treatment with at least 1 prior ARPI (ie, abiraterone acetate, apalutamide, enzalutamide, darolutamide) and docetaxel. (d) Part 2D (apalutamide) - Prior treatment with at least 1 prior ARPI (e) Part 2H (apalutamide)- Participant may have received up to 6 cycles of docetaxel. The last dose of docetaxel must be administered at least 2 months prior to enrollment (f) Parts 1I, 1J, 2I \& 2J (lutetium Lu-177 vipivotide tetraxetan)- Prior treatment with at least 1 ARPI (abiraterone acetate, enzalutamide, darolutamide, or apalutamide). Participant must not have received prior cytotoxic chemotherapy or prior radioligand therapy (RLT) for mCRPC
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
- Adequate organ functions
Exclusion criteria
- Active autoimmune disease within the 12 months prior to signing consent that requires systemic immunosuppressive medications
- Toxicity related to prior anticancer therapy that has not returned to Grade less than or equal to (\<=) 1 or baseline levels (except for alopecia, vitiligo, Grade \<=2 peripheral neuropathy)
- Solid organ or bone marrow transplantation
- Known allergies, or intolerance to any of the components (example, excipients) of pasritamig, cetrelimab (Part 1A), cabazitaxel, Part 1B and 2B , docetaxel Part 1C and 2C , apalutamide (Part 1D and 2D and Part 2H), enzalutamide (Part 1E and 2E), darolutamide (Part 1F and 2F), or AAP (Part 1G and 2G), lutetium Lu-177 vipivotide tetraxetan (Parts 1I, 1J, 2I, and 2J), or JNJ-101556143 (Parts 1K \& 2K)
- Significant infections or serious lung, heart or other medical conditions
Where
- Sarasota, Florida
- Grand Rapids, Michigan
- St Louis, Missouri
- Brooklyn, New York
- Mineola, New York
- New York, New York
- Philadelphia, Pennsylvania
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 Jul 6, 2026 · Source of record for eligibility and locations