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JNJ-69086420

Phase 1

Prostatic Neoplasms | Small molecule | Oncology |Johnson & Johnson|Last Updated: Aug 28, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment144

FDA Designations

No designations recorded

Clinical trial landscape

JNJ-69086420 · 1 trial · 2 indications

Phase 1 1
NCT04644770A Study of JNJ-69086420, an Actinium-225-Labeled Antibody Targeting Human Kallikrein-2 (hK2) for Advanced Prostate CancerProstatic Neoplasms
ACTIVE NOT_RECRUITING144 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study of JNJ-69086420, an Actinium-225-Labeled Antibody Targeting Human Kallikrein-2 (hK2) for Advanced Prostate Cancer
Prostatic NeoplasmsUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants with Adverse Events (AEs) as a Measure of Safety and Tolerability
Up to 2 years and 4 months

An 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.

Part 1: Number of Participants with Dose-Limiting Toxicity (DLT)
Up to 2 years and 4 months

Number of participants with DLT will be assessed. The DLTs are specific adverse events and are defined as any of the following: high grade non-hematologic toxicity, or hematologic toxicity.

Number of Participants with AEs by Severity
Up to 2 years and 4 months

Severity 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.

Secondary Endpoints

Percentage of Participants with Prostate Specific Antigen (PSA) Response
Up to 2 years and 4 months
Overall Response Rate (ORR)
Up to 2 years and 4 months
Maximum Observed Serum Concentration/Radioactivity (Cmax) of JNJ-69086420
Up to 2 years and 4 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part 1: Dose EscalationEXPERIMENTALParticipants will receive 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.
Part 2: Dose ExpansionEXPERIMENTALParticipants in one or more cohorts will receive JNJ-69086420 at the RP2D(s) determined in Part 1.
Part 3: Combination TherapyEXPERIMENTALParticipants will receive JNJ-69086420 at the determined RP2D(s) and fixed dose of JNJ-78278343.
Part 4: HSPC ExpansionEXPERIMENTALParticipants with HSPC will receive JNJ-69086420 at the RP2D(s) in Part 4(a), and JNJ-69086420 following stereotactic body radiation therapy in Part 4(b).

Interventions

NameTypeDescription
JNJ-69086420DRUGParticipants will receive JNJ-69086420.
JNJ-78278343DRUGParticipants will receive JNJ-78278343.
Stereotactic body radiation therapyRADIATIONParticipants will receive stereotactic body radiaition therapy.
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Eligibility Criteria

Age Range18 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites11

Inclusion Criteria: * For Part 1, Part 2, Part 3: 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...

Countries:United States
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Recent Changes (Last 90 Days)

LOWAug 28, 2026NCT04644770Completion: 2026-12-08 → 2026-12-30
LOWAug 28, 2026NCT04644770Completion: 2026-12-08 → 2026-12-30
LOWJul 6, 2026NCT04644770lastUpdatePostDate: changed
LOWJul 6, 2026NCT04644770lastUpdatePostDate: changed

Frequently asked questions about JNJ-69086420

What is JNJ-69086420 used for in prostatic neoplasms?

JNJ-69086420 is an investigational small molecule being developed for the treatment of prostatic neoplasms, specifically advanced prostate cancer. It is currently in Phase 1 clinical development and is not yet approved by regulatory authorities.

What does JNJ-69086420 target?

JNJ-69086420 is an Actinium-225-labeled antibody that targets human Kallikrein-2 (hK2), a protein associated with prostate cancer cells. By binding to hK2, the drug delivers a radioactive payload to cancer cells, potentially causing targeted cell death.

Who makes JNJ-69086420?

JNJ-69086420 is being developed by Johnson & Johnson, a multinational pharmaceutical company listed on the New York Stock Exchange under the ticker symbol JNJ.

What phase is JNJ-69086420 in?

JNJ-69086420 is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA or any other regulatory agency. The ongoing Phase 1 trial is active but not recruiting participants.

What clinical trials is JNJ-69086420 in?

JNJ-69086420 is being studied in a single Phase 1 clinical trial with the identifier NCT04644770. This trial is investigating the drug in patients with advanced prostate cancer and has an enrollment of 144 participants. The study is being conducted in the United States.

Is JNJ-69086420 the same as an Actinium-225-labeled antibody?

Yes, JNJ-69086420 is an Actinium-225-labeled antibody targeting human Kallikrein-2 (hK2). This means the drug combines a monoclonal antibody with the radioactive isotope Actinium-225 to deliver targeted radiation therapy to prostate cancer cells.