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CDX-301

Recombinant protein · Agonist of Flt3 receptor tyrosine kinase (FLT3) · developed by Celldex Therapeutics

Phase 2 Most advanced trial
CLDX Developer
6 Registered trials

What is CDX-301?

CDX-301 is a truncated, soluble, recombinant human Flt3 ligand produced in Chinese hamster ovary cells. It binds the Flt3 tyrosine kinase receptor and, with other growth factors, stimulates proliferation and mobilization of bone marrow precursor cells and dendritic cells. It is studied in breast cancer, lung cancer, non-Hodgkin's lymphoma, head and neck squamous cell carcinoma and prostate cancer.

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

At a glance

Also known as
Flt3 Ligand, Flt3L
Drug type
Recombinant protein
Targets
Flt3 receptor tyrosine kinase (FLT3)
Mechanism
Agonist of Flt3 receptor tyrosine kinase (FLT3)
Pathways
stimulation of bone marrow precursor cell proliferation, mobilization of CD34+ cells, dendritic cell proliferation
Therapy area
Oncology
Developer
Celldex Therapeutics (CLDX)
Also in trials of
INO
FDA status
Investigational, not approved in the US. Most advanced trial: Phase 2
UNII
SP24YIT5YZ

🧪 Clinical trials

TrialPhaseConditionStatusSponsor
NCT04491084 Phase 1/2 Non Small Cell Lung Cancer Terminated CLDX
NCT03804944 Phase 2 Breast Cancer Recruiting CLDX
NCT03789097 Phase 1/2 Non-Hodgkin's Lymphoma Completed CLDX
NCT02839265 Phase 2 Non-small Cell Lung Cancer (NSCLC) Completed CLDX
NCT01976585 Phase 1/2 Low-Grade B-cell Lymphoma Completed CLDX
NCT03835533 Phase 1 Metastatic Castration-resistant Prostate Cancer Completed CLDX

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

Conditions studied

Breast CancerHead and Neck Squamous Cell CarcinomaLow-Grade B-cell LymphomaLung CancerMetastatic Breast CancerMetastatic Castration-resistant Prostate CancerNon Small Cell Lung CancerNon-Hodgkin's LymphomaNon-small Cell Lung Cancer (NSCLC)

Other drugs acting on FLT3

More from Celldex Therapeutics

Sources

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

Follow CLDX, the company behind CDX-301

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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.