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GI-6207

Vaccine (Peptide vaccine) · Immune activation, directed at carcinoembryonic antigen (CEA) peptide 610D (CEACAM5) · developed by ImmunityBio

Phase 1/2 Most advanced trial (none active)

IBRX Developer

1 Registered trials

What is GI-6207?

GI-6207 is a heat-killed, recombinant Saccharomyces cerevisiae yeast-based vaccine expressing a modified carcinoembryonic antigen (CEA) peptide. It stimulates cytotoxic T-lymphocyte responses against CEA-expressing tumor cells. The vaccine is studied in head and neck squamous cell carcinoma and other CEA-expressing cancers including colorectal, gastric, lung, breast, and pancreatic cancers.

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

At a glance

Drug type: Vaccine (Peptide vaccine)
Targets: carcinoembryonic antigen (CEA) peptide 610D (CEACAM5) (antigen)
Mechanism: Immune activation, directed at carcinoembryonic antigen (CEA) peptide 610D (CEACAM5)
Pathways: immune_activation, cytotoxic T-lymphocyte response
Therapy area: Oncology
Developer: ImmunityBio, Inc. (IBRX)
FDA status: Investigational, not approved in the US. Most advanced trial: Phase 1/2
UNII: FIJ3OLQ3N8

🧪 Clinical trials

Trial	Phase	Condition	Status	Sponsor
NCT03169764	Phase 1/2	Head and Neck Squamous Cell Carcinoma	Withdrawn	IBRX

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

Conditions studied

Head and Neck Squamous Cell Carcinoma

Other drugs acting on CEACAM5

AN4035 Phase 1

More from ImmunityBio

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Sources

NCI Thesaurus

Updated Oct 3, 2026. Something wrong or missing? Report it on the IBRX 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