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CGT4859

Small molecule · Inhibitor of FGFR2 and FGFR3 · developed by Cogent Biosciences

Phase 1/2 Most advanced trial
COGT Developer
1 Registered trials

What is CGT4859?

CGT4859 is an orally bioavailable reversible inhibitor of fibroblast growth factor receptors 2 and 3 (FGFR2/3). It selectively binds to and inhibits FGFR2/3, including molecular brake and gatekeeper resistance mutations, blocking FGFR-mediated signaling and tumor cell proliferation. It is being studied in intrahepatic cholangiocarcinoma and other solid tumors with FGFR2/3 alterations.

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

At a glance

Drug type
Small molecule
Targets
FGFR2, FGFR3
Mechanism
Inhibitor of FGFR2 and FGFR3
Pathways
FGFR signaling, cell proliferation, cell survival, angiogenesis
Therapy area
Oncology
Developer
Cogent Biosciences, Inc. (COGT)
FDA status
Investigational, not approved in the US. Most advanced trial: Phase 1/2

🧪 Clinical trials

TrialPhaseConditionStatusSponsor
NCT06777316 Phase 1/2 Intrahepatic Cholangiocarcinoma (Icc) Active not recruiting COGT

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

Conditions studied

Advanced Solid TumorsCholangiocarcinomaFGFR2 Gene AmplificationFGFR2 Gene Fusion/RearrangementFGFR2 Gene Short VariantsFGFR2 Genetic AlterationsFGFR3 Gene AmplificationFGFR3 Gene Fusion/RearrangementFGFR3 Gene Short VariantsFGFR3 Genetic AlterationsIntrahepatic Cholangiocarcinoma (Icc)Other Solid Tumors, Adult

Other drugs acting on FGFR2 / FGFR3

More from Cogent Biosciences

Sources

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

Follow COGT, the company behind CGT4859

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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.