JANX014 for metastatic castration-resistant prostate cancer
Official title: A Phase 1 Open-Label, Multicenter Study of JANX014 in Participants With Prostate Cancer
Run by Janux Therapeutics · NCT07545811 · Data updated 2026-11-12
This trial will test whether JANX014 is safe, how your body handles it, and whether it shows signs of benefit in adults with metastatic castration-resistant prostate cancer who have already had anti-androgen therapy and typically a taxane.
Quick facts
| Phase | Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | Men only |
| Enrollment | 43 (estimated) |
| Sponsor | Janux Therapeutics Industry-sponsored |
| Drugs / interventions | CAR-T |
| Locations | 6 sites (La Jolla, California and 5 other locations) |
| Status | Recruiting |
| Started | April 15, 2026 |
| Main results expected | May 2028 |
| Study ends | March 2029 |
| Registry record updated | September 3, 2026 |
| Trial ID | NCT07545811 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Men aged 18 or older with histologically confirmed metastatic castration-resistant prostate cancer who progressed after at least one novel anti-androgen and typically one taxane regimen (or who refused/are ineligible for taxane) with adequate organ function are the intended candidates.
✕Probably not a fit
Patients with prior CAR-T or approved/investigational T-cell engager therapy, prior radioligand therapy, prior solid organ transplant, or clinically significant cardiovascular disease are excluded and therefore unlikely to benefit from participating.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This first-in-human, open-label Phase 1 study gives JANX014 to adults with metastatic castration-resistant prostate cancer to define safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary signs of anti-tumor activity. The study uses a dose-escalation phase to identify a tolerable dose and a dose-expansion phase to further characterize safety and early efficacy signals. Eligible participants generally must have progressed after at least one novel anti-androgen and typically a prior taxane regimen, although those who refused or cannot receive taxane may qualify. The trial excludes patients with prior CAR-T or T-cell engager therapy, prior radioligand therapy, prior solid organ transplant, or significant cardiovascular disease and is conducted at a research site in Nashville, Tennessee.
Why it matters
Potential benefit: If successful, JANX014 could offer a new treatment option that slows disease progression for some men with advanced castration-resistant prostate cancer who have limited options.
How similar studies have gone: This is a first-in-human trial of JANX014, and while other immune- or cell-based approaches in prostate cancer have shown limited early signals, there is no established precedent of a broadly effective immune cure in mCRPC.
Who can join: the full rules
Show full inclusion / exclusion criteria
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
Where it's running
-
UC San Diego Moores Cancer Center
La Jolla, California, United States Recruiting -
Washington University School of Medicine
St Louis, Missouri, United States Recruiting -
Medical University of South Carolina - Hollings Cancer Center
Charleston, South Carolina, United States Recruiting -
Prisma Health Cancer Institute
Greenville, South Carolina, United States Recruiting -
SCRI Oncology Partners
Nashville, Tennessee, United States Recruiting -
SCRI at Mary Crowley
Dallas, Texas, United States Recruiting
Study contacts
- Study coordinator: Janux Therapeutics, MD
- Email: PRCA-014-001_ct.gov@januxrx.com
- Phone: +1 858-206-8471
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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MRT-2359 plus apalutamide in advanced prostate cancer
This Phase 2 trial tests whether taking MRT-2359 with apalutamide can lower PSA in men with castration-resistant prostate cancer.
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Docetaxel and SX-682 in head and neck cancers and prostate cancer
This trial tests a new drug SX-682 together with docetaxel in adults whose head and neck cancers or prostate cancer have returned or spread.
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Actinium (225Ac) PSMA therapy for castration‑resistant prostate cancer after Lutetium
This trial will test whether an injectable Actinium-225 PSMA treatment can control advanced prostate cancer in men whose disease progressed after Lutetium‑PSMA therapy.
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A-CAR032 CAR-T therapy for metastatic castration-resistant prostate cancer
This early-phase treatment will try A-CAR032, a CAR-T cell therapy, in adults with metastatic castration‑resistant prostate cancer who progressed after ARPI and are not eligible for standard treatment.
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ASP5541 with prednisone and ADT for Chinese men with prostate cancer
This study tests whether giving ASP5541 together with prednisone and ongoing androgen-deprivation therapy is safe and how the medicine behaves in Chinese men with metastatic prostate cancer.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.