1903008-80-9

Biological Activity: Lazertinib (YH25448; GNS-1480) is an orally active, blood-brain barrier permeable third-generation EGFR tyrosine kinase inhibitor, as well as an ABCB1/ABCG2 inhibitor and a TRPA1 activator. Lazertinib exhibits IC₅₀ values of 0.4 mM and 0.2 mM against human ABCB1 and ABCG2, respectively. By inhibiting mutant EGFR signaling, EGFR phosphorylation and the downstream ERK/AKT pathway, as well as upregulating surface expression of EGFR/MET, Lazertinib induces cell cycle arrest, apoptosis, spontaneous calcium responses, hyperexcitability of dorsal root ganglion (DRG) neurons, and TRPA1-dependent pain-like behaviors. Lazertinib competitively binds to the substrate-binding sites of ABCB1/ABCG2, stimulates their ATPase activity without altering their expression or plasma membrane localization, thereby enhancing ADCC activity, acting as a chemosensitizer, and reversing ABCB1-mediated multidrug resistance. It exerts antitumor activity as a single agent or in combination with other drugs. Lazertinib is applicable to research related to non-small cell lung cancer, multidrug-resistant cancers, and paresthesia^[1][2][3][4].