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NCT06095089PHASE1RECRUITING

A Study of JNJ-87189401 Combined With JNJ-78278343 for Advanced Prostate Cancer

A Phase 1 Study of JNJ-87189401 (PSMA-CD28 Bispecific Antibody) Combined With JNJ-78278343 (KLK2-CD3 Bispecific Antibody) for Advanced Prostate Cancer

Sponsor: Janssen Research & Development, LLC

No open prediction endpoints

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Key Facts

Study type
INTERVENTIONAL
Conditions
Prostatic Neoplasms
Interventions
JNJ-78278343, JNJ-87189401, Apalutamide, Lutetium Lu-177 Vipivotide Tetraxetan
Enrollment
355 participants
Primary completion
Jun 2027
Study completion
Jun 2028
First posted
Oct 2023
Last updated
May 2026

Primary Endpoints (CT.gov)

Parts 1, 2C, 3 and 4: Number of Participants With Dose Limiting Toxicity (DLT)

Time frame: Up to 21 days after first combination dose of study drugs

Number of Participants with Adverse Events (AEs) by Severity

Time frame: Up to 4 years 8 months

Secondary Endpoints

Serum Concentrations of JNJ-87189401 and JNJ-78278343

Plasma Concentration of JNJ-101556143

Number of Participants With Antibodies to JNJ-87189401 and JNJ-78278343

Eligibility Criteria

Inclusion Criteria: * Histologically confirmed adenocarcinoma of the prostate. Adenocarcinoma with small cell or neuroendocrine (NE) features is permitted. However, small cell carcinoma, carcinoid tumor, mixed NE carcinoma, or large cell NE carcinoma is disallowed * Measurable or evaluable disease per PCWG3 criteria * Part 1, Parts 2A, 2B, 3 and 4: Prior orchiectomy or medical castration; participants who have not undergone orchiectomy, 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 * Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 Exclusion Criteria: * History of an autoimmune disease within the 12 months prior to signing consent * Any of the following within 6 months prior to signature of informed consent: a. myocardial infarction, b. severe or unstable angina, c. clin

Read full criteria on CT.gov →

✦ Analyst Commentary

Expert commentary on why this trial matters and what to watch for.

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Source

Open on ClinicalTrials.gov