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KIN-3248 is a small molecule that targets and inhibits oncogenic fibroblast growth factor receptors (FGFRs). It was designed to mainly target FGFR2 and FGFR3 alterations, which act as oncogenic drivers in 10-20% of cholangiocarcinoma and 20-35% of urothelial cancers, respectively. While effective, disease progression may occur 6 to 8 months after treatment with currently approved FGFR inhibitors is started, and this effect is usually associated with on-target resistance mutations in the kinase domain of FGFR. Therefore, the broad inhibition of FGFR isoforms may be effective against different types of tumors. The safety, tolerability, pharmacokinetics, and preliminary efficacy of KIN-3248 are currently being evaluated in adults with advanced tumors harboring FGFR2 and/or FGFR3 gene alterations. In February 2023, Kinnate Biopharma received Fast Track designation from the FDA for KIN-3248 to treat unresectable, locally advanced or metastatic cholangiocarcinoma (CCA).
KIN-3248 is a small molecule that targets and inhibits oncogenic fibroblast growth factor receptors (FGFRs). It was designed to mainly target FGFR2 and FGFR3 alterations, which act as oncogenic drivers in 10-20% of cholangiocarcinoma and 20-35% of urothelial cancers, respectively. While effective, disease progression may occur 6 to 8 months after treatment with currently approved FGFR inhibitors is started, and this effect is usually associated with on-target resistance mutations in the kinase domain of FGFR. Therefore, the broad inhibition of FGFR isoforms may be effective against different types of tumors. The safety, tolerability, pharmacokinetics, and preliminary efficacy of KIN-3248 are currently being evaluated in adults with advanced tumors harboring FGFR2 and/or FGFR3 gene alterations. In February 2023, Kinnate Biopharma received Fast Track designation from the FDA for KIN-3248 to treat unresectable, locally advanced or metastatic cholangiocarcinoma (CCA).
Fibroblast growth factor receptors (FGFRs) are a subfamily of receptor tyrosine kinases that participate in processes such as embryogenesis, angiogenesis, tissue homeostasis, and wound repair. FGFR signaling is aberrantly activated in different types of cancer. The use of inhibitors that target FGFR represents a therapeutic opportunity; however, mutations on FGFR are the most common mechanism of FGFR-tyrosine kinase inhibitor resistance in targeted therapy. KIN-3248 is a pan-FGFR kinase inhibitor that binds to and inhibits the activity of FGFR2 and FGFR3.
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