A Phase 1b Study of JNJ-78278343, a T-cell Redirecting Agent Targeting Human Kallikrein 2 (KLK2), in Combination With Either JNJ-63723283 (Cetrelimab), Taxane Chemotherapy, or Androgen Receptor Pathway Inhibitors for Metastatic Castration-Resistant Prostate Cancer

CR109321

The purpose of this study is to identify the recommended phase 2 regimen(s) RP2R(s) of JNJ-78278343 and combination agent in Part 1 (dose escalation) and to determine safety at the putative RP2R(s) of JNJ-78278343 with the combination agent in Part 2 (dose expansion).

2023-04-26

2025-06-30

2026-03-16

Recruiting

Early phase I

345

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. * (a) Part 1A: JNJ-78278343 + cetrelimab - Prior treatment for mCRPC with at least 1 prior androgen receptor pathway inhibitors (ARPI) (that is, abiraterone acetate, apalutamide, enzalutamide, darolutamide), or chemotherapy (eg, docetaxel). (b) Part 1C: JNJ-78278343 + docetaxel, Part 1D: JNJ-78278343 + apalutamide, Part 1E: JNJ-78278343 + enzalutamide, Part 1F: JNJ-78278343 + darolutamide, and Part 1G: JNJ-78278343 + abiraterone acetate + prednisone - Prior treatment with at least 1 prior ARPI (that is, apalutamide, enzalutamide, darolutamide, or abiraterone acetate,). (C) Part 1B: JNJ-78278343 + cabazitaxel - Prior treatment with at least 1 prior ARPI (ie, abiraterone acetate, apalutamide, enzalutamide, darolutamide) and docetaxel. * 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 JNJ-78278343, cetrelimab (Part 1A), cabazitaxel, (Part 1B), docetaxel (Part 1C), apalutamide (Part 1D), enzalutamide (Part 1E), darolutamide (Part 1F), or abiraterone acetate + prednisone (AAP) (Part 1G) * Significant infections or serious lung, heart or other medical conditions

{'studyType': 'INTERVENTIONAL', 'phases': ['PHASE1'], 'designInfo': {'allocation': 'NA', 'interventionModel': 'SEQUENTIAL', 'primaryPurpose': 'TREATMENT', 'maskingInfo': {'masking': 'NONE'}}, 'enrollmentInfo': {'count': 345, 'type': 'ESTIMATED'}}

2024-05-08