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JNJ-101556143

Phase 2

Prostatic Neoplasms | Small molecule | Oncology |Johnson & Johnson|Trials Updated: Sep 25, 2026

JNJ-101556143 development status

Highest phase Phase 2
Registered trials 3 across 1 sponsor since Apr 2023

JNJ-101556143 target and mechanism

ModalitySmall molecule

Also known as JNJ-101556143 Formulation 1, JNJ-101556143 Formulation 2, JNJ-101556143 Formulation 3

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials2
Total Enrollment290

FDA Designations

No designations recorded

JNJ-101556143 clinical trials

JNJ-101556143 · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT07832292A Study of JNJ-101556143 in Participants With Metastatic Prostate CancerProstatic Neoplasms
RECRUITING100 Analytics
PHASE2RECRUITING
A Study of JNJ-101556143 in Participants With Metastatic Prostate Cancer
Prostatic NeoplasmsUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall Response Rate (ORR)
Up to 2 years and 8 months

Confirmed overall response, is defined as having either confirmed complete response (CR) or partial response (PR) per response evaluation criteria in solid tumors version 1.1 (RECIST v1.1) by blinded independent central review (BICR) prior to any subsequent anti-cancer therapy.

Frequency of dose-limiting toxicities (DLTs)
21 days
Frequency and severity of AEs and abnormal ECG, laboratory and clinical changes since baseline
21 days
Phase 1 Part 2 (formulation exploration) relative bioavailability
22 days

Secondary Endpoints

Duration of Response (DoR)
Up to 2 years and 8 months
Radiographic Progression-Free Survival (rPFS)
Up to 2 years and 8 months
Time to Symptomatic Progression (TSP)
Up to 2 years and 8 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
JNJ-101556143EXPERIMENTALParticipants will receive JNJ-101556143 orally once daily in a 28-day treatment cycle until confirmed radiographic progression by blinded independent central review (BICR) or unequivocal clinical progression, or any other protocol-defined discontinuation criteria is met.
JNJ-101556143 Phase 1 Part 1 - Dose EscalationEXPERIMENTALTreatment cycle consists of 21 days. Treatment may continue until disease progression or study discontinuation (withdrawal of consent, intercurrent illness, unacceptable adverse event or any other changes unacceptable for further treatment, etc.)
JNJ-101556143 Phase 1 Part 2 - Formulation ExplorationEXPERIMENTALTreatment cycle consists of 21 days. Treatment may continue until disease progression or study discontinuation (withdrawal of consent, intercurrent illness, unacceptable adverse event or any other changes unacceptable for further treatment, etc.)
JNJ-101556143 Phase 2 Part 1 - Dose OptimizationEXPERIMENTALTreatment cycle consists of 21 days. Treatment may continue until disease progression or study discontinuation (withdrawal of consent, intercurrent illness, unacceptable adverse event or any other changes unacceptable for further treatment, etc.)
Phase 2 Part 2A - SOAREXPERIMENTALTreatment cycle consists of 21 days. Treatment may continue until disease progression or study discontinuation (withdrawal of consent, intercurrent illness, unacceptable adverse event or any other changes unacceptable for further treatment, etc.)
Phase 2 Part 2B - HSPC ExpansionEXPERIMENTALTreatment cycle consists of 21 days. Treatment may continue until disease progression or study discontinuation (withdrawal of consent, intercurrent illness, unacceptable adverse event or any other changes unacceptable for further treatment, etc.)
Phase 2 Part 2C - HSPC ExpansionEXPERIMENTALTreatment cycle consists of 21 days. Treatment may continue until disease progression or study discontinuation (withdrawal of consent, intercurrent illness, unacceptable adverse event or any other changes unacceptable for further treatment, etc.)
Phase 2 Part 2D - HSPC ExpansionEXPERIMENTALTreatment cycle consists of 21 days. Treatment may continue until disease progression or study discontinuation (withdrawal of consent, intercurrent illness, unacceptable adverse event or any other changes unacceptable for further treatment, etc.)

Interventions

NameTypeDescription
JNJ-101556143DRUGParticipants will receive JNJ-101556143 orally.
JNJ-101556143 Formulation 1DRUGExperimental: Oral JNJ-101556143
JNJ-101556143 Formulation 2DRUGExperimental: Oral JNJ-101556143
JNJ-101556143 Formulation 3DRUGExperimental: Oral JNJ-101556143
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Eligibility Criteria

Age Range18 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: * Have histologically confirmed adenocarcinoma of the prostate. Primary (or pathologic evidence of conversion to) small cell carcinoma, carcinoid tumor, mixed neuroendocrine carcinoma, large cell neuroendocrine carcinoma, or sarcoma of the prostate is disallowed * Progressive me...

Countries:United StatesChinaUnited Kingdom
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Recent Changes (Last 90 Days)

LOWSep 25, 2026NCT06800313primaryCompletionDate: changed
LOWSep 25, 2026NCT07832292Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 25, 2026NCT06800313primaryCompletionDate: changed
LOWSep 25, 2026NCT07832292Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 21, 2026NCT07832292NEW_TRIAL: changed
LOWSep 21, 2026NCT07832292NEW_TRIAL: changed
LOWAug 31, 2026NCT06800313lastUpdatePostDate: changed
LOWAug 31, 2026NCT06800313lastUpdatePostDate: changed
MEDIUMAug 20, 2026NCT06800313primaryCompletionDate: changed
MEDIUMAug 20, 2026NCT06800313primaryCompletionDate: changed

Frequently asked questions about JNJ-101556143

What is JNJ-101556143?

JNJ-101556143 is an investigational small molecule developed by Johnson & Johnson for the treatment of metastatic prostate cancer and prostatic neoplasms. It is in Phase 1 clinical development and is being evaluated in clinical trials for patients with advanced prostate cancer.

What is JNJ-101556143 used for in metastatic prostate cancer?

JNJ-101556143 is being studied for use in metastatic prostate cancer and prostatic neoplasms. It is an investigational therapy, meaning it has not been approved by regulatory authorities for any indication and is available only through clinical trials.

Who makes JNJ-101556143?

JNJ-101556143 is developed by Johnson & Johnson, which trades on the New York Stock Exchange under the ticker symbol JNJ. The company is responsible for the clinical development program of this small molecule in oncology.

What phase is JNJ-101556143 in?

JNJ-101556143 is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA or any other regulatory agency for commercial use. It is currently being evaluated in clinical trials for metastatic prostate cancer.

What clinical trials is JNJ-101556143 in?

JNJ-101556143 is being evaluated in two recruiting clinical trials: NCT07832292, a Phase 2 study in participants with metastatic prostate cancer, and NCT06800313, a Phase 1 study in patients with metastatic prostate cancer. Both trials are currently active and enrolling male participants aged 18 years and older.

Is JNJ-101556143 the same as HLD-0915?

JNJ-101556143 is also known as HLD-0915, as referenced in the Phase 1 trial NCT06800313. Additionally, the drug has been described in three formulations: JNJ-101556143 Formulation 1, Formulation 2, and Formulation 3. These names refer to the same investigational compound.