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A Study of JNJ-80038114 in Participants With Advanced Stage Prostate Cancer

A Phase 1 Study of JNJ-80038114, a T-Cell Redirecting Agent Targeting Prostate Specific Membrane Antigen (PSMA), for Advanced Stage Prostate Cancer

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05441501
Enrollment
39
Registered
2022-07-01
Start date
2022-11-15
Completion date
2024-03-31
Last updated
2025-03-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prostatic Neoplasms

Keywords

Prostate cancer

Brief summary

The purpose of this study is to determine recommended phase 2 dose(s) (RP2Ds) of JNJ-80038114 in Part 1 (dose escalation) and to determine the safety at the RP2D(s) in Part 2 (dose expansion).

Interventions

DRUGJNJ-80038114

JNJ-80038114 will be administered.

Sponsors

Janssen Research & Development, LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Metastatic castration-resistant prostate cancer (mCRPC) with confirmed adenocarcinoma of the prostate as defined by Prostate Cancer Working Group 3 (PCWG3) * Measurable or evaluable disease * At least 1 prior treatment for mCRPC * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Adequate organ functions as defined by certain laboratory values * Must sign an informed consent form (ICF) * Participants must agree to use a highly effective form of birth control as guided by the study doctor

Exclusion criteria

* Concurrent anticancer therapy * Severe or long-lasting side effects related to prior anticancer therapy * Known allergies to JNJ-80038114 or its excipients * Brain metastasis or known seizure history * Significant infections or lung, heart or other medical conditions

Design outcomes

Primary

MeasureTime frameDescription
Parts 1 and 2: Number of Participants With Adverse Events (AEs)Up to 2 Years 6 MonthsAn AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/ biological agent under study.
Parts 1 and 2: Number of Participants With AEs by SeverityUp to 2 Years 6 MonthsSeverity will be graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0. Severity scale ranges from Grade 1 (Mild) to Grade 5 (Death). Grade 1= Mild, Grade 2= Moderate, Grade 3= Severe, Grade 4= Life-threatening and Grade 5= Death related to adverse event. Cytokine release syndrome (CRS) and associated neurologic toxicity events will be graded according to the American Society for Transplantation and Cellular Therapy (ASTCT) guidelines.
Part 1: Number of Participants With Dose-Limiting Toxicity (DLT)Up to 2 Years 6 MonthsNumber of participants with DLT will be reported. The DLTs are specific adverse events and are defined as any of the following: high grade non-hematologic toxicity, or hematologic toxicity.

Secondary

MeasureTime frameDescription
Serum Prostate Specific Antigen (PSA) ConcentrationUp to 2 Years 6 MonthsSerum PSA concentration will be determined.
Objective Response Rate (ORR)Up to 2 Years 6 MonthsORR is defined as the percentage of participants who have a partial response (PR) or better according to Prostate Cancer Working Group 3 (PCWG3) response criteria.
Number of Participants With Antibodies to JNJ-80038114Up to 2 Years 6 MonthsSerum samples will be analyzed for the detection of antibodies to JNJ-80038114 using a validated assay method.
Duration of Response (DOR)Up to 2 Years 6 MonthsDOR is defined as the duration from the date of initial documentation of a response (PR or better) to the date of first documented evidence of progressive disease, as defined in the PCWG3 response criteria, or death due to any cause, whichever occurs first.
PSA Response RateUp to 2 Years 6 MonthsPSA response rate is defined as the percentage of participants with a confirmed decline in PSA of 50 percent (%) or more from baseline.
Serum Concentration of JNJ-80038114Up to 2 Years 6 MonthsSerum concentration of JNJ-80038114 will be determined.
Systemic Cytokine ConcentrationsUp to 2 Years 6 MonthsCytokine concentrations will be determined for biomarker assessment.

Countries

United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026