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78278343PCR1003 Prostate cancer
A Phase 1b, open-label study of pasritamig (JNJ-78278343; KLK2 × CD3 bispecific Ab) in combination with other agents in participants with metastatic prostate cancer
Phase
b
Compound
Pasritamig (JNJ-78278343; KLK2 × CD3 bispecific Ab) + other agents
NCT identifier
NCT05818683
Enrollment

N=~300

For more information, including
contact details, please visit
the J&J Clinical Trial Finder
Study overview & design

Key eligibility criteria*:

  • Parts 1A–G, 1I–1K, and 2B–C: mCRPC with confirmed adenocarcinoma of the prostate as defined by PCWG3
  • Parts 2D–G and 2I–K: mCRPC: histologically confirmed adenocarcinoma of the prostate as defined by PCWG3, with a minimum PSA of 2 ng/mL
  • Part 2H: mHSPC with PSA >0.2 ng/mL on 6–24 months of next generation ARPI treatment
  • Measurable or evaluable disease, except for Part 2H
  • Part 1A: prior treatment for mCRPC with ≥1 prior ARPI, or chemotherapy
  • Parts 1B and 2B: prior treatment with ≥1 prior ARPI and docetaxel
  • Parts 1C–G, 1I–K, 2C–G, 2I–K: prior treatment with ≥1 prior ARPI
  • Parts 1I, 1J, 2I, and 2J: must not have received prior cytotoxic chemotherapy or prior RLT for mCRPC
  • Part 2H: may have received up to 6 cycles of docetaxel
  • ECOG PS 0 or 1
  • Adequate organ functions
  • No solid organ or bone marrow transplantation
Study design
Study design

Primary outcomes:

  • DLTs (Part 1)
  • AEs (Parts 1 and 2)

Secondary outcomes:

  • ORR
  • rPFS
  • TTR
  • PSA response rate
  • DOR
  • Part 2H: composite PFS

*Not a complete list of inclusion and exclusion criteria. The dose of pasritamig will be escalated sequentially until a RP2R. Cetrelimab, cabazitaxel, docetaxel, apalutamide, enzalutamide, darolutamide, abiraterone acetate plus prednisone, lutetium Lu-177 vipivotide tetraxetan and JNJ-101556143.
Ab, antibody; AE, adverse event; ARPI, androgen receptor pathway inhibitor; CD, cluster of differentiation; DLT, dose-limiting toxicity; DOR, duration of response; ECOG PS, Eastern Cooperative Oncology Group performance status; KLK2, human kallikrein-2; mCRPC, metastatic castration-resistant prostate cancer; mHSPC, metastatic hormone-sensitive prostate cancer; ORR, overall response rate; PCWG3, Prostate Cancer Working Group 3; PFS, progression-free survival; PSA, prostate-specific antigen; RLT, radioligand therapy; RP2D, recommended Phase 2 dose; rPFS, radiographic progression-free survival; TTR, time to response.

Recruiting site locations
World Map
Australia, Spain, United States
Study design
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KLK2 mechanism of action
The safety and efficacy of these investigational agents have not been determined. There is no guarantee that the investigational agents listed will be filed with and/or approved for marketing by the FDA or local regulatory agencies.

For additional information you may visit www.clinicaltrials.gov.

KLK2 mechanism of action
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