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

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

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05783622
Enrollment
130
Registered
2023-03-24
Start date
2023-04-19
Completion date
2026-10-31
Last updated
2026-06-01

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

Conditions

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

Brief 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.

Interventions

DRUGJANX008

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

Sponsors

Janux Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
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

* 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

Design outcomes

Primary

MeasureTime frame
Incidence of Dose Limiting Toxicities (DLT)21 days
Incidence of Adverse Events (AE) and Serious Adverse Events (SAE)Up to 4 years
Incidence of Clinically Significant Laboratory AbnormalitiesUp to 4 years

Secondary

MeasureTime frameDescription
Area under the concentration time curve from time 0 to last timepoint prior to next dose JANX008 (AUC last)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)
Maximum observed concentration of JANX008 (Cmax)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)
Number of participants who develop anti-drug antibodies against JANX008Up to 4 years
Overall Response RateUp to 4 yearsProportion of participants who achieve a complete response or partial response per RECIST v1.1
Duration of ResponseUp to 4 yearsTime from documentation of CR or PR to disease progression per RECIST v1.1
Progression Free SurvivalUp to 4 yearsTime from treatment initiation to disease progression per RECIST v1.1
Correlation of EGFR expression level with anti-tumor activity and safetyUp to 4 years

Countries

United States

Contacts

STUDY_DIRECTORJanux Therapeutics, MD

Janux Therapeutics

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 2, 2026