Purpose

The purpose of this study is to determine the recommended Phase 2 dose(s) (RP2D[s]) of JNJ-69086420 in Part 1 (Dose Escalation) and to determine safety and preliminary signs of clinical activity at the RP2D(s) in Part 2 (Dose Expansion).

Conditions

Eligibility

Eligible Ages
Over 18 Years
Eligible Genders
Male
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Metastatic castration resistant prostate cancer (mCRPC) with histologic confirmation of adenocarcinoma (adenocarcinoma with small-cell or neuroendocrine features is allowed) with prior exposure to at least one androgen receptor (AR) targeted therapy (example, abiraterone acetate, enzalutamide, apalutamide, darolutamide). In addition: Part 1: prior taxane or other chemotherapy is acceptable but not required. Part 2a: prior taxane or other chemotherapy required, Part 2b: no prior taxane or other chemotherapy, Part 2c: mCRPC that has progressed after prior treatment with lutetium Lu-177 vipivotide tetraxetan - Prior orchiectomy or medical castration; or, for 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 - Palliative radiotherapy (for example [eg], soft tissue lesions) must be completed greater than (>) 2 weeks prior to start of study drug except for palliative radiotherapy for pain (eg, bone pain), which may be used any time prior to first dose - Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 - Adequate organ functions as reflected in laboratory parameters

Exclusion Criteria

  • Prior treatment with radium Xofigo (Ra 223 dichloride), strontium, samarium, or other radioconjugate therapy. In addition: Part 2b: Prior treatment with chemotherapy (eg, docetaxel) or poly ADP ribose polymerase (PARP) inhibitors. Part 2c: Prior treatment with lutetium Lu-177 vipivotide tetraxetan is permitted - Known history of myelodysplastic syndrome, leukemia, or hematological malignancy with features suggestive of myelodysplastic syndrome/acute myeloid leukemia at any timepoint - Toxicity from prior anticancer therapy has not resolved to baseline levels or to Grade less than or equal to (<=) 1 (except alopecia, radiation tissue fibrosis, or peripheral neuropathy) - Known allergies, hypersensitivity, or intolerance to JNJ-69086420 or its excipients and protein therapeutics - Active or chronic hepatitis B or hepatitis C infection

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 Escalation
Participants will receive intravenous (IV) injection of JNJ-69086420 with one or multiple doses. The dose levels will be escalated based on the dose limiting toxicities (DLT) evaluation by Study Evaluation Team (SET) until the recommended Phase 2 Dose (RP2D) has been identified.
  • Drug: JNJ-69086420
    Participants will receive IV injection of JNJ-69086420.
    Other names:
    • Actinium-225-DOTA-h11B6
Experimental
Part 2: Dose Expansion
Participants in one or more cohorts will receive intravenous (IV) injection of JNJ-69086420 at the RP2D(s) determined in Part 1.
  • Drug: JNJ-69086420
    Participants will receive IV injection of JNJ-69086420.
    Other names:
    • Actinium-225-DOTA-h11B6

Recruiting Locations

Tulane School Of Medicine
New Orleans, Louisiana 70112

More Details

Status
Recruiting
Sponsor
Janssen Research & Development, LLC

Study Contact

Study Contact
844-434-4210
Participate-In-This-Study@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.