Testing JANX008 in patients with advanced solid tumors

An Open-Label, Multicenter, Phase 1/1b Study of JANX008 in Subjects With Advanced or Metastatic Solid Tumor Malignancies

PHASE1 · Janux Therapeutics · NCT05783622

This study is testing a new drug called JANX008 to see if it can help adults with advanced solid tumors that keep getting worse, despite other treatments.

Quick facts

PhasePHASE1
Study typeInterventional
Enrollment130 (estimated)
Ages18 Years to 100 Years
SexAll
SponsorJanux Therapeutics (industry)
Drugs / interventionsCAR-T
Locations18 sites (Duarte, California and 17 other locations)
Trial IDNCT05783622 on ClinicalTrials.gov

What this trial studies

This is a first-in-human, Phase 1/1b, open-label, multicenter study designed to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary anti-tumor activity of JANX008 in adult patients with advanced or metastatic solid tumors that express EGFR. The study involves dose escalation and expansion phases to determine the optimal dosing regimen. Eligible participants must have tumors that have progressed despite prior therapies and must have adequate organ function.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with advanced or metastatic non-small cell lung cancer, renal cell carcinoma, squamous cell carcinoma of the head and neck, colorectal carcinoma, or small cell lung cancer who have not responded to existing therapies.

Not a fit: Patients with significant cardiovascular diseases, active infections, or those who have received certain prior treatments may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with advanced solid tumors that are difficult to treat.

How similar studies have performed: Other studies targeting EGFR in advanced solid tumors have shown promise, indicating potential for success with this novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects ≥18 years of age at the time of signing informed consent
* Histologically or cytologically documented locally advanced or metastatic NSCLC, SCCHN, CRC, RCC, SCLC, PDAC, TNBC
* Progressed or was intolerant to all available therapies known to confer clinical benefit appropriate for the tumor type
* Adequate organ function
* At least 1 measurable lesion per RECIST 1.1

Exclusion Criteria:

* Treatment with anti-cancer therapy within 28 days or ≤5 elimination half-lives, whichever is earlier, before enrollment
* Prior treatment with EGFR-targeted bispecific T cell engager or CAR-T cell therapy
* Prior treatment with CD3 engaging bispecific antibodies
* Clinically significant cardiovascular diseases
* Active clinically significant infection (bacterial, viral, fungal, mycobacteria, or other)
* On supplemental oxygen
* Any medical condition or clinical laboratory abnormality likely to interfere with assessment of safety or efficacy of study treatment

Where this trial is running

Duarte, California and 17 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Non-Small Cell Lung Cancer, Renal Cell Carcinoma, Squamous Cell Carcinoma of the Head and Neck, Colorectal Carcinoma, Small Cell Lung Cancer, Pancreatic Ductal Adenocarcinoma, Triple-negative Breast Cancer

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.