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. 2025 Oct 13;43(10):1815-1832.e10.
doi: 10.1016/j.ccell.2025.05.016. Epub 2025 Jun 19.

A first-in-class EGFR-directed KRAS G12V selective inhibitor

Affiliations

A first-in-class EGFR-directed KRAS G12V selective inhibitor

Lyla J Stanland et al. Cancer Cell. .

Abstract

Despite KRASG12V being the second most common KRAS mutation in cancer, no direct inhibitors targeting KRASG12V have been approved. RNA interference (RNAi) has faced numerous obstacles as cancer therapeutic, including the lack of cancer-specific tissue targeting, rapid oligonucleotide nuclease degradation, and clearance from circulation. Recently, the use of targetable ligands conjugated to chemically modified siRNAs have shown remarkable promise in circumventing these barriers. In this study, we demonstrate that an EGFR-directed RNAi molecule (EFTX-G12V) is highly selective for KRASG12V and exhibits improved therapeutic activity over pan-KRAS targeting, including enhanced inhibition of several cancer hallmarks. Using a targeted RNAi delivery platform, we achieve effective tumor silencing of KRASG12V and significant anti-tumor activity across several cancer models. Our findings represent a technological advance in oncogene targeting using RNAi and provide new biologic insights in KRAS targeting with potential implications for safety and efficacy.

Keywords: EGFR; KRAS; RNA interference; angiogenesis; cancer; ligand conjugation; lung cancer; mutant-selective; siRNA; siRNA delivery.

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Conflict of interest statement

Declaration of interests C.V.P., S.H.A., Y.S.C., M.C.F., A.A.B., and C.V.P. hold intellectual property interests on this work. C.V.P. is founder of EnFuego Therapeutics, Inc. and holds equity in the company. L.J.S., H.P.H., V.J., and J.I. were employees of EnFuego Therapeutics at the time of this work. S.S.S., A.P., J.L.P., P.S.P., K.W., L.E., W.D.G., C.G-F., I.S., A.D., K.I.Z., R.S.S., G.D.L.C., A.W., J.M., and M.E. declare no competing interests.

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