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CDX-3379 · KTN-3379

Monoclonal antibody · Antagonist of ErbB3 (HER3) receptor (ERBB3) · developed by Celldex Therapeutics

Phase 2 Most advanced trial (none active)
CLDX Developer
3 Registered trials

What is CDX-3379?

CDX-3379 is a human monoclonal antibody that binds a unique epitope on the ErbB3 (HER3) receptor, a member of the EGFR family of receptor tyrosine kinases. It prevents ErbB3 phosphorylation and both ligand-dependent and ligand-independent signaling, inhibiting proliferation and survival of ErbB3-expressing tumor cells. It is studied in head and neck squamous cell carcinoma and melanoma.

Summary written with AI from the sources listed at the end of this page.

At a glance

Also known as
KTN-3379
Drug type
Monoclonal antibody
Targets
ErbB3 (HER3) receptor (ERBB3)
Mechanism
Antagonist of ErbB3 (HER3) receptor (ERBB3)
Pathways
ErbB3 phosphorylation, ligand-dependent and ligand-independent ErbB3 signaling, cellular proliferation and survival
Therapy area
Oncology
Developer
Celldex Therapeutics (CLDX)
FDA status
Investigational, not approved in the US. Most advanced trial: Phase 2
UNII
00X6I56YXR

🧪 Clinical trials

TrialPhaseConditionStatusSponsor
NCT03580382 Phase 1/2 Melanoma Terminated CLDX
NCT03254927 Phase 2 Advanced Head and Neck Squamous Cell Carcinoma Terminated CLDX
NCT02473731 Phase 1 Squamous Cell Carcinoma of the Head and Neck Completed CLDX

Trials of the companies BioRadar tracks, from ClinicalTrials.gov, most advanced phase first.

Conditions studied

Advanced Head and Neck Squamous Cell CarcinomaMelanomaSquamous Cell Carcinoma of the Head and Neck

Other drugs acting on ERBB3

More from Celldex Therapeutics

Sources

Updated Oct 11, 2026. Something wrong or missing? Report it on the CLDX page.

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Data: FDA (Drugs@FDA, Purple Book, DailyMed), NIH (NCI Thesaurus, GSRS, RxNorm), ClinicalTrials.gov • Informational purposes only, not medical or investment advice. • All drugs A–Z

This data is for informational purposes only, not investment advice. BioRadar does not provide buy/sell recommendations. Past performance does not guarantee future results. Always do your own due diligence.