Purpose

The purpose of this study is to identify the recommended phase 2 combination dose (RP2CD) of Pasritamig in combination with JNJ-86974680 in Part 1 (Dose finding) of the study and to determine how safe and tolerable the RP2CD is for treatment of participants with advanced prostate cancer in Part 2 (Dose expansion) of study.

Condition

Eligibility

Eligible Ages
Over 18 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Histologically confirmed adenocarcinoma of the prostate. Primary small cell carcinoma, carcinoid tumor, neuroendocrine (NE) carcinoma, or large cell NE carcinoma arising in the prostate are not allowed; however, adenocarcinomas with NE features (for example [e.g.], immunohistochemistry [IHC] with both androgen receptor [AR]- and NE-marker positivity) are allowed - Metastatic castration-resistant prostate cancer (mCRPC) that is metastatic either to bone, any lymph node, or both without clear evidence of metastasis to visceral organs. Local-regional invasion (rectum, bladder) and bone disease with soft tissue component can be included - Prior orchiectomy or medical castration (for example, must be receiving ongoing androgen deprivation therapy with a gonadotropin-releasing hormone [GnRH] analog [agonist or antagonist] prior to the first dose of study drug and must continue this therapy throughout the treatment phase) - Prostate-specific antigen (PSA) greater than or equal to (>=) 2 nanograms per milliliters (ng/mL) at screening - Measurable or evaluable disease - Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1

Exclusion Criteria

  • Toxicity related to prior anticancer therapy that has not returned to grade less than or equal to (<=) 1 or baseline levels (except for alopecia, neuropathy [Grade 2] and vitiligo) - Known allergies, hypersensitivity, or intolerance to any of the components (for example, excipients) of pasritamig or JNJ-86974680 - Active infection or condition that requires treatment with systemic antibiotics within 7 days prior to the first dose of study treatment. Antibiotic or antiviral prophylaxis is allowed - Have leptomeningeal disease or brain metastases, except participants with definitively, locally treated brain metastases that are clinically stable and asymptomatic >2 weeks, and who are off corticosteroid treatment for at least 2 weeks prior to first dose of study treatment - Any serious underlying medical conditions or other issue that would impair the ability of the participant to receive or tolerate the planned treatment at the investigational site to understand the informed consent, or any condition for which, in the opinion of the investigator, participation would not be in the best interest of the participant or that could prevent, limit, or confound the protocol-specified assessments

Study Design

Phase
Phase 1
Study Type
Interventional
Allocation
Non-Randomized
Intervention Model
Sequential Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Part 1: Dose Finding
Participants will receive pasritamig in combination with JNJ-86974680 to determine the recommended phase 2 combination dose (RP2CD) regimen.
  • Drug: Pasritamig
    Pasritamig will be administered intravenously.
    Other names:
    • JNJ-78278343
  • Drug: JNJ-86974680
    JNJ-86974680 will be administered orally.
Experimental
Part 2: Dose Expansion
Participants will receive pasritamig in combination with JNJ-86974680 at the RP2CD as determined in Part 1 of the study to confirm the safety and anti-tumor activity.
  • Drug: Pasritamig
    Pasritamig will be administered intravenously.
    Other names:
    • JNJ-78278343
  • Drug: JNJ-86974680
    JNJ-86974680 will be administered orally.

Recruiting Locations

Florida Cancer Specialists
Sarasota, Florida 34232

Columbia University Medical Center
New York, New York 10032

University Hospitals Cleveland Medical Center
Cleveland, Ohio 44106

More Details

Status
Recruiting
Sponsor
Janssen Research & Development, LLC

Study Contact

Study Contact
844-434-4210
Participate-In-This-Study1@its.jnj.com

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.