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Study of JANX014 in Subjects With Metastatic Castration-Resistant Prostate Cancer

A Phase 1 Open-Label, Multicenter Study of JANX014 in Participants With Prostate Cancer

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07545811
Enrollment
43
Registered
2026-04-22
Start date
2026-04-15
Completion date
2029-03-01
Last updated
2026-09-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Castration-resistant Prostate Cancer, Metastatic Castration-resistant Prostate Cancer, Prostate Cancer

Brief summary

This study is a first-in-human, Phase 1, open-label, multicenter study to assess the safety, tolerability, pharmacokinetic (PK), pharmacodynamic (PD), and the preliminary efficacy of JANX014 in adults with metastatic castration-resistant prostate cancer (mCRPC).

Interventions

BIOLOGICALJANX014

JANX014 will be administered via IV dosing

Sponsors

Janux Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male ≥18 years of age at the time of signing informed consent * Histologically or cytologically confirmed adenocarcinoma of the prostate * For Dose Escalation: Having mCRPC that progressed after at least one novel anti-androgen therapy and at least one taxane containing regimen. Participants who have actively refused a taxane containing regimen or are medically unsuitable to receive taxane are eligible. * Adequate organ function * For Dose Expansion Part: Have received ≤ 2 anti-androgen therapies in either the HSPC or CRPC setting and no more than 1 prior taxane regimen in the HSPC setting. Participants who have actively refused a taxane regimen or are medically unsuitable to receive taxane are eligible.

Exclusion criteria

* Prior solid organ transplant * Prior treatment with any CAR-T cell therapy, approved or investigational T-cell engager therapy, and prior receipt of radioligand therapy * Clinically significant cardiovascular disease

Design outcomes

Primary

MeasureTime frame
Incidence of Dose Limiting Toxicities (DLTs)2 years
Incidence of adverse events (AE) and Serious Adverse Events (SAE)2 years

Secondary

MeasureTime frame
Area under the curve from time 0 to t of JANX014 (AUC0-t)up to 2 years
Maximum observed concentration of JANX014 (Cmax)up to 2 years
Number of participants who develop anti-drug antibodies against JANX014up to 2 years
Prostate Specific Antigen (PSA) responseup to 2 years
Overall Response Rateup to 2 years
Duration of Responseup to 2 years
Radiographic Progression Free Survival (rPFS)up to 2 years

Countries

United States

Contacts

CONTACTJanux Therapeutics, MD
PRCA-014-001_ct.gov@januxrx.com+1 858-206-8471

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 4, 2026