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Active, not recruitingNCT05783622Updated Jun 1, 2026

Study of JANX008 in Subjects With Advanced or Metastatic Solid Tumor Malignancies

A Phase 1 interventional study of JANX008 in Non-Small Cell Lung Cancer, Renal Cell Carcinoma and Squamous Cell Carcinoma of the Head and Neck, sponsored by Janux Therapeutics. Active, not recruiting at 18 sites in United States. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2026-06-01.

Sponsored by Janux Therapeutics · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
130
Allocation
Non-randomized
Ages
18 Years to 100 Years
Sex
All
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Study summary

This study is a first-in-human (FIH), Phase 1/1b, open-label, multicenter dose escalation and dose expansion study to assess the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary anti-tumor activity of JANX008 in adult subjects with advanced or metastatic carcinoma expressing EGFR.

02

Conditions studied

  • 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
03

In context

Carcinoma, Non-Small-Cell Lung

6,488 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,632 are open to participants now.

This study's planned enrollment of 130 is above the median of 62 across 5,213 interventional studies indexed under Carcinoma, Non-Small-Cell Lung.

Browse Carcinoma, Non-Small-Cell Lung studies →

Lead sponsor

Janux Therapeutics is the lead sponsor of 5 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

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
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Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
130 participants (estimated)

Study arms

  • Experimental
    Dose Escalation

    Subjects will be dosed weekly during each 21-day cycle. Dosage per cohort will increase to determine the maximum tolerable dose.

    Drug: JANX008

  • Experimental
    Backfill Expansion

    Subjects will be dosed weekly during each 21-day cycle. Subjects will be dosed at levels previously declared tolerable.

    Drug: JANX008

  • Experimental
    Expansion

    Subjects will be dosed weekly during each 21-day cycle. Subjects will be dosed at the preliminary recommended Phase 2 dose (RP2D).

    Drug: JANX008

Interventions

  • DrugJANX008

    JANX008 is dosed via IV weekly in a 21-day cycle

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What researchers measure

Primary outcomes

  1. Incidence of Dose Limiting Toxicities (DLT)

    Time frame: 21 days

  2. Incidence of Adverse Events (AE) and Serious Adverse Events (SAE)

    Time frame: Up to 4 years

  3. Incidence of Clinically Significant Laboratory Abnormalities

    Time frame: Up to 4 years

Secondary outcomes

  1. Area under the concentration time curve from time 0 to last timepoint prior to next dose JANX008 (AUC last)

    Time frame: Pre-dose and at multiple timepoints post-dose on Days 1, 2, 4, 8, 9, 15, 16, 18 up to end of treatment (Up to 4 years)

  2. Maximum observed concentration of JANX008 (Cmax)

    Time frame: Pre-dose and at multiple timepoints post-dose on Days 1, 2, 4, 8, 9, 15, 16, 18 up to end of treatment (Up to 4 years)

  3. Number of participants who develop anti-drug antibodies against JANX008

    Time frame: Up to 4 years

  4. Overall Response Rate

    Proportion of participants who achieve a complete response or partial response per RECIST v1.1

    Time frame: Up to 4 years

  5. Duration of Response

    Time from documentation of CR or PR to disease progression per RECIST v1.1

    Time frame: Up to 4 years

  6. Progression Free Survival

    Time from treatment initiation to disease progression per RECIST v1.1

    Time frame: Up to 4 years

  7. Correlation of EGFR expression level with anti-tumor activity and safety

    Time frame: Up to 4 years

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Study locations

18 sites
  • City of Hope Medical Center
    Duarte, California 91010, United States
  • University of California, Davis Comprehensive Cancer Center
    Sacramento, California 95817, United States
  • University of California San Diego Moores Cancer Center
    San Diego, California 92093, United States
  • Winship Cancer Institute, Emory University
    Atlanta, Georgia 30308, United States
  • University of Chicago Medical Center
    Chicago, Illinois 60637, United States
  • University of Michigan
    Ann Arbor, Michigan 48109, United States
  • Henry Ford Health System
    Detroit, Michigan 48202, United States
  • Washington University
    St Louis, Missouri 63110, United States
  • Laura and Isaac Perlmutter Cancer Center NYU Langone Health
    New York, New York 10016, United States
  • University of North Carolina at Chapel Hill
    Chapel Hill, North Carolina 27599, United States
  • The Christ Hospital Cancer Center
    Cincinnati, Ohio 45219, United States
  • Ohio State University Hospital
    Columbus, Ohio 43210, United States
  • University of Pennsylvania, Abramson Cancer Center
    Philadelphia, Pennsylvania 19104, United States
  • UPMC Hillman Cancer Center
    Pittsburgh, Pennsylvania 15232, United States
  • Rhode Island Hospital
    Providence, Rhode Island 02903, United States
  • Sarah Cannon Research Institute
    Nashville, Tennessee 37203, United States
  • University of Texas Southwestern Medical Center
    Dallas, Texas 75390, United States
  • The University of Texas, MD Anderson Cancer Center
    Houston, Texas 77030, United States
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 1, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05783622
Lead sponsor
Janux Therapeutics
Responsible party
Sponsor
First posted
Mar 24, 2023
Start date
Apr 19, 2023
Primary completion
Jul 31, 2026 (estimated)
Completion
Oct 31, 2026 (estimated)
Last update
Jun 1, 2026

Study contacts

Janux Therapeutics, MD
study director · Janux Therapeutics

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in May 2026. You cannot join it, but the record below documents what was studied.

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